/// shuffles.
FunctionPass *createExpandReductionsPass();
+ // This pass expands memcmp() to load/stores.
+ FunctionPass *createExpandMemCmpPass();
+
/// Creates Break False Dependencies pass. \see BreakFalseDeps.cpp
FunctionPass *createBreakFalseDeps();
void addPGOInstrPasses(legacy::PassManagerBase &MPM, bool IsCS);
void addFunctionSimplificationPasses(legacy::PassManagerBase &MPM);
void addInstructionCombiningPass(legacy::PassManagerBase &MPM) const;
- void addMemcmpPasses(legacy::PassManagerBase &MPM) const;
public:
/// populateFunctionPassManager - This fills in the function pass manager,
//===----------------------------------------------------------------------===//
//
-// ExpandMemCmp - This pass expands memcmp() to load/stores.
-//
-Pass *createExpandMemCmpPass();
-
-//===----------------------------------------------------------------------===//
-//
// ValuePropagation - Propagate CFG-derived value information
//
Pass *createCorrelatedValuePropagationPass();
EarlyIfConversion.cpp
EdgeBundles.cpp
ExecutionDomainFix.cpp
+ ExpandMemCmp.cpp
ExpandPostRAPseudos.cpp
ExpandReductions.cpp
FaultMaps.cpp
initializeEarlyIfPredicatorPass(Registry);
initializeEarlyMachineLICMPass(Registry);
initializeEarlyTailDuplicatePass(Registry);
+ initializeExpandMemCmpPassPass(Registry);
initializeExpandPostRAPass(Registry);
initializeFEntryInserterPass(Registry);
initializeFinalizeISelPass(Registry);
#include "llvm/ADT/Statistic.h"
#include "llvm/Analysis/ConstantFolding.h"
-#include "llvm/Analysis/DomTreeUpdater.h"
-#include "llvm/Analysis/GlobalsModRef.h"
#include "llvm/Analysis/TargetLibraryInfo.h"
#include "llvm/Analysis/TargetTransformInfo.h"
#include "llvm/Analysis/ValueTracking.h"
+#include "llvm/CodeGen/TargetLowering.h"
+#include "llvm/CodeGen/TargetPassConfig.h"
#include "llvm/CodeGen/TargetSubtargetInfo.h"
-#include "llvm/IR/Dominators.h"
#include "llvm/IR/IRBuilder.h"
-#include "llvm/Transforms/Scalar.h"
using namespace llvm;
namespace {
+
// This class provides helper functions to expand a memcmp library call into an
// inline expansion.
class MemCmpExpansion {
uint64_t NumLoadsNonOneByte;
const uint64_t NumLoadsPerBlockForZeroCmp;
std::vector<BasicBlock *> LoadCmpBlocks;
- BasicBlock *EndBlock = nullptr;
+ BasicBlock *EndBlock;
PHINode *PhiRes;
const bool IsUsedForZeroCmp;
const DataLayout &DL;
IRBuilder<> Builder;
- DomTreeUpdater DTU;
// Represents the decomposition in blocks of the expansion. For example,
// comparing 33 bytes on X86+sse can be done with 2x16-byte loads and
// 1x1-byte load, which would be represented as [{16, 0}, {16, 16}, {32, 1}.
struct LoadEntry {
LoadEntry(unsigned LoadSize, uint64_t Offset)
- : LoadSize(LoadSize), Offset(Offset) {}
+ : LoadSize(LoadSize), Offset(Offset) {
+ }
// The size of the load for this block, in bytes.
unsigned LoadSize;
public:
MemCmpExpansion(CallInst *CI, uint64_t Size,
const TargetTransformInfo::MemCmpExpansionOptions &Options,
- const bool IsUsedForZeroCmp, const DataLayout &TheDataLayout,
- DominatorTree *DT);
+ const bool IsUsedForZeroCmp, const DataLayout &TheDataLayout);
unsigned getNumBlocks();
uint64_t getNumLoads() const { return LoadSequence.size(); }
MemCmpExpansion::MemCmpExpansion(
CallInst *const CI, uint64_t Size,
const TargetTransformInfo::MemCmpExpansionOptions &Options,
- const bool IsUsedForZeroCmp, const DataLayout &TheDataLayout,
- DominatorTree *DT)
+ const bool IsUsedForZeroCmp, const DataLayout &TheDataLayout)
: CI(CI), Size(Size), MaxLoadSize(0), NumLoadsNonOneByte(0),
NumLoadsPerBlockForZeroCmp(Options.NumLoadsPerBlock),
- IsUsedForZeroCmp(IsUsedForZeroCmp), DL(TheDataLayout), Builder(CI),
- DTU(DT, /*PostDominator*/ nullptr,
- DomTreeUpdater::UpdateStrategy::Eager) {
+ IsUsedForZeroCmp(IsUsedForZeroCmp), DL(TheDataLayout), Builder(CI) {
assert(Size > 0 && "zero blocks");
// Scale the max size down if the target can load more bytes than we need.
llvm::ArrayRef<unsigned> LoadSizes(Options.LoadSizes);
}
void MemCmpExpansion::createLoadCmpBlocks() {
- assert(ResBlock.BB && "ResBlock must be created before LoadCmpBlocks");
for (unsigned i = 0; i < getNumBlocks(); i++) {
BasicBlock *BB = BasicBlock::Create(CI->getContext(), "loadbb",
EndBlock->getParent(), EndBlock);
}
void MemCmpExpansion::createResultBlock() {
- assert(EndBlock && "EndBlock must be created before ResultBlock");
ResBlock.BB = BasicBlock::Create(CI->getContext(), "res_block",
EndBlock->getParent(), EndBlock);
}
// final phi node for selecting the memcmp result.
void MemCmpExpansion::emitLoadCompareByteBlock(unsigned BlockIndex,
unsigned OffsetBytes) {
- BasicBlock *const BB = LoadCmpBlocks[BlockIndex];
- Builder.SetInsertPoint(BB);
+ Builder.SetInsertPoint(LoadCmpBlocks[BlockIndex]);
Type *LoadSizeType = Type::getInt8Ty(CI->getContext());
Value *Source1 =
getPtrToElementAtOffset(CI->getArgOperand(0), LoadSizeType, OffsetBytes);
// next LoadCmpBlock,
Value *Cmp = Builder.CreateICmp(ICmpInst::ICMP_NE, Diff,
ConstantInt::get(Diff->getType(), 0));
- BasicBlock *const NextBB = LoadCmpBlocks[BlockIndex + 1];
- BranchInst *CmpBr = BranchInst::Create(EndBlock, NextBB, Cmp);
+ BranchInst *CmpBr =
+ BranchInst::Create(EndBlock, LoadCmpBlocks[BlockIndex + 1], Cmp);
Builder.Insert(CmpBr);
- DTU.applyUpdates({{DominatorTree::Insert, BB, EndBlock},
- {DominatorTree::Insert, BB, NextBB}});
} else {
// The last block has an unconditional branch to EndBlock.
BranchInst *CmpBr = BranchInst::Create(EndBlock);
Builder.Insert(CmpBr);
- DTU.applyUpdates({{DominatorTree::Insert, BB, EndBlock}});
}
}
// continue to next LoadCmpBlock or EndBlock.
BranchInst *CmpBr = BranchInst::Create(ResBlock.BB, NextBB, Cmp);
Builder.Insert(CmpBr);
- BasicBlock *const BB = LoadCmpBlocks[BlockIndex];
// Add a phi edge for the last LoadCmpBlock to Endblock with a value of 0
// since early exit to ResultBlock was not taken (no difference was found in
// any of the bytes).
if (BlockIndex == LoadCmpBlocks.size() - 1) {
Value *Zero = ConstantInt::get(Type::getInt32Ty(CI->getContext()), 0);
- PhiRes->addIncoming(Zero, BB);
+ PhiRes->addIncoming(Zero, LoadCmpBlocks[BlockIndex]);
}
- DTU.applyUpdates({{DominatorTree::Insert, BB, ResBlock.BB},
- {DominatorTree::Insert, BB, NextBB}});
}
// This function creates the IR intructions for loading and comparing using the
Type *MaxLoadType = IntegerType::get(CI->getContext(), MaxLoadSize * 8);
assert(CurLoadEntry.LoadSize <= MaxLoadSize && "Unexpected load type");
- BasicBlock *const BB = LoadCmpBlocks[BlockIndex];
- Builder.SetInsertPoint(BB);
+ Builder.SetInsertPoint(LoadCmpBlocks[BlockIndex]);
Value *Source1 = getPtrToElementAtOffset(CI->getArgOperand(0), LoadSizeType,
CurLoadEntry.Offset);
// any of the bytes).
if (BlockIndex == LoadCmpBlocks.size() - 1) {
Value *Zero = ConstantInt::get(Type::getInt32Ty(CI->getContext()), 0);
- PhiRes->addIncoming(Zero, BB);
+ PhiRes->addIncoming(Zero, LoadCmpBlocks[BlockIndex]);
}
- DTU.applyUpdates({{DominatorTree::Insert, BB, ResBlock.BB},
- {DominatorTree::Insert, BB, NextBB}});
}
// This function populates the ResultBlock with a sequence to calculate the
PhiRes->addIncoming(Res, ResBlock.BB);
BranchInst *NewBr = BranchInst::Create(EndBlock);
Builder.Insert(NewBr);
- DTU.applyUpdates({{DominatorTree::Insert, ResBlock.BB, EndBlock}});
return;
}
BasicBlock::iterator InsertPt = ResBlock.BB->getFirstInsertionPt();
BranchInst *NewBr = BranchInst::Create(EndBlock);
Builder.Insert(NewBr);
PhiRes->addIncoming(Res, ResBlock.BB);
- DTU.applyUpdates({{DominatorTree::Insert, ResBlock.BB, EndBlock}});
}
void MemCmpExpansion::setupResultBlockPHINodes() {
if (getNumBlocks() != 1) {
BasicBlock *StartBlock = CI->getParent();
EndBlock = StartBlock->splitBasicBlock(CI, "endblock");
- DTU.applyUpdates({{DominatorTree::Insert, StartBlock, EndBlock}});
setupEndBlockPHINodes();
createResultBlock();
// calculate which source was larger. The calculation requires the
// two loaded source values of each load compare block.
// These will be saved in the phi nodes created by setupResultBlockPHINodes.
- if (!IsUsedForZeroCmp)
- setupResultBlockPHINodes();
+ if (!IsUsedForZeroCmp) setupResultBlockPHINodes();
// Create the number of required load compare basic blocks.
createLoadCmpBlocks();
// Update the terminator added by splitBasicBlock to branch to the first
// LoadCmpBlock.
- BasicBlock *const FirstLoadBB = LoadCmpBlocks[0];
- StartBlock->getTerminator()->setSuccessor(0, FirstLoadBB);
- DTU.applyUpdates({{DominatorTree::Delete, StartBlock, EndBlock},
- {DominatorTree::Insert, StartBlock, FirstLoadBB}});
+ StartBlock->getTerminator()->setSuccessor(0, LoadCmpBlocks[0]);
}
Builder.SetCurrentDebugLocation(CI->getDebugLoc());
/// %phi.res = phi i32 [ %48, %loadbb3 ], [ %11, %res_block ]
/// ret i32 %phi.res
static bool expandMemCmp(CallInst *CI, const TargetTransformInfo *TTI,
- const DataLayout *DL, DominatorTree *DT) {
+ const TargetLowering *TLI, const DataLayout *DL) {
NumMemCmpCalls++;
// Early exit from expansion if -Oz.
const bool IsUsedForZeroCmp = isOnlyUsedInZeroEqualityComparison(CI);
auto Options = TTI->enableMemCmpExpansion(CI->getFunction()->hasOptSize(),
IsUsedForZeroCmp);
- if (!Options)
- return false;
+ if (!Options) return false;
if (MemCmpEqZeroNumLoadsPerBlock.getNumOccurrences())
Options.NumLoadsPerBlock = MemCmpEqZeroNumLoadsPerBlock;
if (!CI->getFunction()->hasOptSize() && MaxLoadsPerMemcmp.getNumOccurrences())
Options.MaxNumLoads = MaxLoadsPerMemcmp;
- MemCmpExpansion Expansion(CI, SizeVal, Options, IsUsedForZeroCmp, *DL, DT);
+ MemCmpExpansion Expansion(CI, SizeVal, Options, IsUsedForZeroCmp, *DL);
// Don't expand if this will require more loads than desired by the target.
if (Expansion.getNumLoads() == 0) {
return true;
}
+
+
class ExpandMemCmpPass : public FunctionPass {
public:
static char ID;
}
bool runOnFunction(Function &F) override {
- if (skipFunction(F))
+ if (skipFunction(F)) return false;
+
+ auto *TPC = getAnalysisIfAvailable<TargetPassConfig>();
+ if (!TPC) {
return false;
+ }
+ const TargetLowering* TL =
+ TPC->getTM<TargetMachine>().getSubtargetImpl(F)->getTargetLowering();
const TargetLibraryInfo *TLI =
&getAnalysis<TargetLibraryInfoWrapperPass>().getTLI(F);
const TargetTransformInfo *TTI =
&getAnalysis<TargetTransformInfoWrapperPass>().getTTI(F);
- // ExpandMemCmp does not need the DominatorTree, but we update it if it's
- // already available.
- auto *DTWP = getAnalysisIfAvailable<DominatorTreeWrapperPass>();
- auto PA = runImpl(F, TLI, TTI, DTWP ? &DTWP->getDomTree() : nullptr);
+ auto PA = runImpl(F, TLI, TTI, TL);
return !PA.areAllPreserved();
}
void getAnalysisUsage(AnalysisUsage &AU) const override {
AU.addRequired<TargetLibraryInfoWrapperPass>();
AU.addRequired<TargetTransformInfoWrapperPass>();
- AU.addUsedIfAvailable<DominatorTreeWrapperPass>();
- AU.addPreserved<GlobalsAAWrapperPass>();
- AU.addPreserved<DominatorTreeWrapperPass>();
FunctionPass::getAnalysisUsage(AU);
}
PreservedAnalyses runImpl(Function &F, const TargetLibraryInfo *TLI,
- const TargetTransformInfo *TTI, DominatorTree *DT);
+ const TargetTransformInfo *TTI,
+ const TargetLowering* TL);
// Returns true if a change was made.
bool runOnBlock(BasicBlock &BB, const TargetLibraryInfo *TLI,
- const TargetTransformInfo *TTI, const DataLayout &DL,
- DominatorTree *DT);
+ const TargetTransformInfo *TTI, const TargetLowering* TL,
+ const DataLayout& DL);
};
-bool ExpandMemCmpPass::runOnBlock(BasicBlock &BB, const TargetLibraryInfo *TLI,
- const TargetTransformInfo *TTI,
- const DataLayout &DL, DominatorTree *DT) {
- for (Instruction &I : BB) {
+bool ExpandMemCmpPass::runOnBlock(
+ BasicBlock &BB, const TargetLibraryInfo *TLI,
+ const TargetTransformInfo *TTI, const TargetLowering* TL,
+ const DataLayout& DL) {
+ for (Instruction& I : BB) {
CallInst *CI = dyn_cast<CallInst>(&I);
if (!CI) {
continue;
LibFunc Func;
if (TLI->getLibFunc(ImmutableCallSite(CI), Func) &&
(Func == LibFunc_memcmp || Func == LibFunc_bcmp) &&
- expandMemCmp(CI, TTI, &DL, DT)) {
+ expandMemCmp(CI, TTI, TL, &DL)) {
return true;
}
}
return false;
}
-PreservedAnalyses ExpandMemCmpPass::runImpl(Function &F,
- const TargetLibraryInfo *TLI,
- const TargetTransformInfo *TTI,
- DominatorTree *DT) {
- const DataLayout &DL = F.getParent()->getDataLayout();
+
+PreservedAnalyses ExpandMemCmpPass::runImpl(
+ Function &F, const TargetLibraryInfo *TLI, const TargetTransformInfo *TTI,
+ const TargetLowering* TL) {
+ const DataLayout& DL = F.getParent()->getDataLayout();
bool MadeChanges = false;
for (auto BBIt = F.begin(); BBIt != F.end();) {
- if (runOnBlock(*BBIt, TLI, TTI, DL, DT)) {
+ if (runOnBlock(*BBIt, TLI, TTI, TL, DL)) {
MadeChanges = true;
// If changes were made, restart the function from the beginning, since
// the structure of the function was changed.
++BBIt;
}
}
- if (!MadeChanges)
- return PreservedAnalyses::all();
- PreservedAnalyses PA;
- PA.preserve<GlobalsAA>();
- PA.preserve<DominatorTreeAnalysis>();
- return PA;
+ return MadeChanges ? PreservedAnalyses::none() : PreservedAnalyses::all();
}
} // namespace
INITIALIZE_PASS_END(ExpandMemCmpPass, "expandmemcmp",
"Expand memcmp() to load/stores", false, false)
-Pass *llvm::createExpandMemCmpPass() { return new ExpandMemCmpPass(); }
+FunctionPass *llvm::createExpandMemCmpPass() {
+ return new ExpandMemCmpPass();
+}
"enable-implicit-null-checks",
cl::desc("Fold null checks into faulting memory operations"),
cl::init(false), cl::Hidden);
+static cl::opt<bool> DisableMergeICmps("disable-mergeicmps",
+ cl::desc("Disable MergeICmps Pass"),
+ cl::init(false), cl::Hidden);
static cl::opt<bool> PrintLSR("print-lsr-output", cl::Hidden,
cl::desc("Print LLVM IR produced by the loop-reduce pass"));
static cl::opt<bool> PrintISelInput("print-isel-input", cl::Hidden,
addPass(createPrintFunctionPass(dbgs(), "\n\n*** Code after LSR ***\n"));
}
+ if (getOptLevel() != CodeGenOpt::None) {
+ // The MergeICmpsPass tries to create memcmp calls by grouping sequences of
+ // loads and compares. ExpandMemCmpPass then tries to expand those calls
+ // into optimally-sized loads and compares. The transforms are enabled by a
+ // target lowering hook.
+ if (!DisableMergeICmps)
+ addPass(createMergeICmpsLegacyPass());
+ addPass(createExpandMemCmpPass());
+ }
+
// Run GC lowering passes for builtin collectors
// TODO: add a pass insertion point here
addPass(createGCLoweringPass());
PM.add(createInstructionCombiningPass(ExpensiveCombines));
}
-void PassManagerBuilder::addMemcmpPasses(legacy::PassManagerBase &PM) const {
- if (OptLevel > 0) {
- // The MergeICmpsPass tries to create memcmp calls by grouping sequences of
- // loads and compares. ExpandMemCmpPass then tries to expand those calls
- // into optimally-sized loads and compares. The transforms are enabled by a
- // target transform info hook.
- PM.add(createMergeICmpsLegacyPass());
- PM.add(createExpandMemCmpPass());
- PM.add(createEarlyCSEPass());
- }
-}
-
void PassManagerBuilder::populateFunctionPassManager(
legacy::FunctionPassManager &FPM) {
addExtensionsToPM(EP_EarlyAsPossible, FPM);
addExtensionsToPM(EP_ScalarOptimizerLate, MPM);
- addMemcmpPasses(MPM); // Merge/Expand comparisons.
if (RerollLoops)
MPM.add(createLoopRerollPass());
PM.add(NewGVN ? createNewGVNPass()
: createGVNPass(DisableGVNLoadPRE)); // Remove redundancies.
PM.add(createMemCpyOptPass()); // Remove dead memcpys.
- addMemcmpPasses(PM); // Merge/Expand comparisons.
// Nuke dead stores.
PM.add(createDeadStoreEliminationPass());
DeadStoreElimination.cpp
DivRemPairs.cpp
EarlyCSE.cpp
- ExpandMemCmp.cpp
FlattenCFGPass.cpp
Float2Int.cpp
GuardWidening.cpp
// We only try merging comparisons if the target wants to expand memcmp later.
// The rationale is to avoid turning small chains into memcmp calls.
- if (!TTI.enableMemCmpExpansion(F.hasOptSize(), /*IsZeroCmp*/ true))
+ if (!TTI.enableMemCmpExpansion(F.hasOptSize(), true))
return false;
// If we don't have memcmp avaiable we can't emit calls to it.
initializeLowerWidenableConditionLegacyPassPass(Registry);
initializeMemCpyOptLegacyPassPass(Registry);
initializeMergeICmpsLegacyPassPass(Registry);
- initializeExpandMemCmpPassPass(Registry);
initializeMergedLoadStoreMotionLegacyPassPass(Registry);
initializeNaryReassociateLegacyPassPass(Registry);
initializePartiallyInlineLibCallsLegacyPassPass(Registry);
; CHECK-NEXT: Loop Pass Manager
; CHECK-NEXT: Induction Variable Users
; CHECK-NEXT: Loop Strength Reduction
+; CHECK-NEXT: Basic Alias Analysis (stateless AA impl)
+; CHECK-NEXT: Function Alias Analysis Results
+; CHECK-NEXT: Merge contiguous icmps into a memcmp
+; CHECK-NEXT: Expand memcmp() to load/stores
; CHECK-NEXT: Lower Garbage Collection Instructions
; CHECK-NEXT: Shadow Stack GC Lowering
; CHECK-NEXT: Remove unreachable blocks from the CFG
--- /dev/null
+; RUN: llc -O2 < %s -mtriple=aarch64-linux-gnu | FileCheck %s --check-prefixes=CHECK,CHECKN
+; RUN: llc -O2 < %s -mtriple=aarch64-linux-gnu -mattr=strict-align | FileCheck %s --check-prefixes=CHECK,CHECKS
+
+declare i32 @bcmp(i8*, i8*, i64) nounwind readonly
+declare i32 @memcmp(i8*, i8*, i64) nounwind readonly
+
+define i1 @bcmp_b2(i8* %s1, i8* %s2) {
+entry:
+ %bcmp = call i32 @bcmp(i8* %s1, i8* %s2, i64 15)
+ %ret = icmp eq i32 %bcmp, 0
+ ret i1 %ret
+
+; CHECK-LABEL: bcmp_b2:
+; CHECK-NOT: bl bcmp
+; CHECKN: ldr x
+; CHECKN-NEXT: ldr x
+; CHECKN-NEXT: ldur x
+; CHECKN-NEXT: ldur x
+; CHECKS: ldr x
+; CHECKS-NEXT: ldr x
+; CHECKS-NEXT: ldr w
+; CHECKS-NEXT: ldr w
+; CHECKS-NEXT: ldrh w
+; CHECKS-NEXT: ldrh w
+; CHECKS-NEXT: ldrb w
+; CHECKS-NEXT: ldrb w
+}
+
+define i1 @bcmp_bs(i8* %s1, i8* %s2) optsize {
+entry:
+ %memcmp = call i32 @memcmp(i8* %s1, i8* %s2, i64 31)
+ %ret = icmp eq i32 %memcmp, 0
+ ret i1 %ret
+
+; CHECK-LABEL: bcmp_bs:
+; CHECKN-NOT: bl memcmp
+; CHECKN: ldp x
+; CHECKN-NEXT: ldp x
+; CHECKN-NEXT: ldr x
+; CHECKN-NEXT: ldr x
+; CHECKN-NEXT: ldur x
+; CHECKN-NEXT: ldur x
+; CHECKS: bl memcmp
+}
; CHECK-NEXT: Loop Pass Manager
; CHECK-NEXT: Induction Variable Users
; CHECK-NEXT: Loop Strength Reduction
+; CHECK-NEXT: Basic Alias Analysis (stateless AA impl)
+; CHECK-NEXT: Function Alias Analysis Results
+; CHECK-NEXT: Merge contiguous icmps into a memcmp
+; CHECK-NEXT: Expand memcmp() to load/stores
; CHECK-NEXT: Lower Garbage Collection Instructions
; CHECK-NEXT: Shadow Stack GC Lowering
; CHECK-NEXT: Remove unreachable blocks from the CFG
; STOP-BEFORE-NOT: Loop Strength Reduction
; RUN: llc < %s -debug-pass=Structure -start-after=loop-reduce -o /dev/null 2>&1 | FileCheck %s -check-prefix=START-AFTER
-; START-AFTER: -gc-lowering
+; START-AFTER: -aa -mergeicmps
; START-AFTER: FunctionPass Manager
-; START-AFTER-NEXT: Lower Garbage Collection Instructions
+; START-AFTER-NEXT: Dominator Tree Construction
; RUN: llc < %s -debug-pass=Structure -start-before=loop-reduce -o /dev/null 2>&1 | FileCheck %s -check-prefix=START-BEFORE
; START-BEFORE: -machine-branch-prob -domtree
; START-BEFORE: FunctionPass Manager
; START-BEFORE: Loop Strength Reduction
-; START-BEFORE-NEXT: Lower Garbage Collection Instructions
+; START-BEFORE-NEXT: Basic Alias Analysis (stateless AA impl)
; RUN: not llc < %s -start-before=nonexistent -o /dev/null 2>&1 | FileCheck %s -check-prefix=NONEXISTENT-START-BEFORE
; RUN: not llc < %s -stop-before=nonexistent -o /dev/null 2>&1 | FileCheck %s -check-prefix=NONEXISTENT-STOP-BEFORE
--- /dev/null
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -ppc-gpr-icmps=all -verify-machineinstrs -mcpu=pwr8 < %s | FileCheck %s
+target datalayout = "e-m:e-i64:64-n32:64"
+target triple = "powerpc64le-unknown-linux-gnu"
+
+@zeroEqualityTest01.buffer1 = private unnamed_addr constant [3 x i32] [i32 1, i32 2, i32 4], align 4
+@zeroEqualityTest01.buffer2 = private unnamed_addr constant [3 x i32] [i32 1, i32 2, i32 3], align 4
+@zeroEqualityTest02.buffer1 = private unnamed_addr constant [4 x i32] [i32 4, i32 0, i32 0, i32 0], align 4
+@zeroEqualityTest02.buffer2 = private unnamed_addr constant [4 x i32] [i32 3, i32 0, i32 0, i32 0], align 4
+@zeroEqualityTest03.buffer1 = private unnamed_addr constant [4 x i32] [i32 0, i32 0, i32 0, i32 3], align 4
+@zeroEqualityTest03.buffer2 = private unnamed_addr constant [4 x i32] [i32 0, i32 0, i32 0, i32 4], align 4
+@zeroEqualityTest04.buffer1 = private unnamed_addr constant [15 x i32] [i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14], align 4
+@zeroEqualityTest04.buffer2 = private unnamed_addr constant [15 x i32] [i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 13], align 4
+
+declare signext i32 @memcmp(i8* nocapture, i8* nocapture, i64) local_unnamed_addr #1
+
+; Check 4 bytes - requires 1 load for each param.
+define signext i32 @zeroEqualityTest02(i8* %x, i8* %y) {
+; CHECK-LABEL: zeroEqualityTest02:
+; CHECK: # %bb.0:
+; CHECK-NEXT: lwz 3, 0(3)
+; CHECK-NEXT: lwz 4, 0(4)
+; CHECK-NEXT: xor 3, 3, 4
+; CHECK-NEXT: cntlzw 3, 3
+; CHECK-NEXT: srwi 3, 3, 5
+; CHECK-NEXT: xori 3, 3, 1
+; CHECK-NEXT: blr
+ %call = tail call signext i32 @memcmp(i8* %x, i8* %y, i64 4)
+ %not.cmp = icmp ne i32 %call, 0
+ %. = zext i1 %not.cmp to i32
+ ret i32 %.
+}
+
+; Check 16 bytes - requires 2 loads for each param (or use vectors?).
+define signext i32 @zeroEqualityTest01(i8* %x, i8* %y) {
+; CHECK-LABEL: zeroEqualityTest01:
+; CHECK: # %bb.0:
+; CHECK-NEXT: ld 5, 0(3)
+; CHECK-NEXT: ld 6, 0(4)
+; CHECK-NEXT: cmpld 5, 6
+; CHECK-NEXT: bne 0, .LBB1_2
+; CHECK-NEXT: # %bb.1: # %loadbb1
+; CHECK-NEXT: ld 3, 8(3)
+; CHECK-NEXT: ld 4, 8(4)
+; CHECK-NEXT: cmpld 3, 4
+; CHECK-NEXT: li 3, 0
+; CHECK-NEXT: beq 0, .LBB1_3
+; CHECK-NEXT: .LBB1_2: # %res_block
+; CHECK-NEXT: li 3, 1
+; CHECK-NEXT: .LBB1_3: # %endblock
+; CHECK-NEXT: clrldi 3, 3, 32
+; CHECK-NEXT: blr
+ %call = tail call signext i32 @memcmp(i8* %x, i8* %y, i64 16)
+ %not.tobool = icmp ne i32 %call, 0
+ %. = zext i1 %not.tobool to i32
+ ret i32 %.
+}
+
+; Check 7 bytes - requires 3 loads for each param.
+define signext i32 @zeroEqualityTest03(i8* %x, i8* %y) {
+; CHECK-LABEL: zeroEqualityTest03:
+; CHECK: # %bb.0:
+; CHECK-NEXT: lwz 5, 0(3)
+; CHECK-NEXT: lwz 6, 0(4)
+; CHECK-NEXT: cmplw 5, 6
+; CHECK-NEXT: bne 0, .LBB2_3
+; CHECK-NEXT: # %bb.1: # %loadbb1
+; CHECK-NEXT: lhz 5, 4(3)
+; CHECK-NEXT: lhz 6, 4(4)
+; CHECK-NEXT: cmplw 5, 6
+; CHECK-NEXT: bne 0, .LBB2_3
+; CHECK-NEXT: # %bb.2: # %loadbb2
+; CHECK-NEXT: lbz 3, 6(3)
+; CHECK-NEXT: lbz 4, 6(4)
+; CHECK-NEXT: cmplw 3, 4
+; CHECK-NEXT: li 3, 0
+; CHECK-NEXT: beq 0, .LBB2_4
+; CHECK-NEXT: .LBB2_3: # %res_block
+; CHECK-NEXT: li 3, 1
+; CHECK-NEXT: .LBB2_4: # %endblock
+; CHECK-NEXT: clrldi 3, 3, 32
+; CHECK-NEXT: blr
+ %call = tail call signext i32 @memcmp(i8* %x, i8* %y, i64 7)
+ %not.lnot = icmp ne i32 %call, 0
+ %cond = zext i1 %not.lnot to i32
+ ret i32 %cond
+}
+
+; Validate with > 0
+define signext i32 @zeroEqualityTest04() {
+; CHECK-LABEL: zeroEqualityTest04:
+; CHECK: # %bb.0:
+; CHECK-NEXT: addis 3, 2, .LzeroEqualityTest02.buffer1@toc@ha
+; CHECK-NEXT: addis 4, 2, .LzeroEqualityTest02.buffer2@toc@ha
+; CHECK-NEXT: addi 6, 3, .LzeroEqualityTest02.buffer1@toc@l
+; CHECK-NEXT: addi 5, 4, .LzeroEqualityTest02.buffer2@toc@l
+; CHECK-NEXT: ldbrx 3, 0, 6
+; CHECK-NEXT: ldbrx 4, 0, 5
+; CHECK-NEXT: cmpld 3, 4
+; CHECK-NEXT: bne 0, .LBB3_2
+; CHECK-NEXT: # %bb.1: # %loadbb1
+; CHECK-NEXT: li 4, 8
+; CHECK-NEXT: ldbrx 3, 6, 4
+; CHECK-NEXT: ldbrx 4, 5, 4
+; CHECK-NEXT: li 5, 0
+; CHECK-NEXT: cmpld 3, 4
+; CHECK-NEXT: beq 0, .LBB3_3
+; CHECK-NEXT: .LBB3_2: # %res_block
+; CHECK-NEXT: cmpld 3, 4
+; CHECK-NEXT: li 3, 1
+; CHECK-NEXT: li 4, -1
+; CHECK-NEXT: isel 5, 4, 3, 0
+; CHECK-NEXT: .LBB3_3: # %endblock
+; CHECK-NEXT: extsw 3, 5
+; CHECK-NEXT: neg 3, 3
+; CHECK-NEXT: rldicl 3, 3, 1, 63
+; CHECK-NEXT: xori 3, 3, 1
+; CHECK-NEXT: blr
+ %call = tail call signext i32 @memcmp(i8* bitcast ([4 x i32]* @zeroEqualityTest02.buffer1 to i8*), i8* bitcast ([4 x i32]* @zeroEqualityTest02.buffer2 to i8*), i64 16)
+ %not.cmp = icmp slt i32 %call, 1
+ %. = zext i1 %not.cmp to i32
+ ret i32 %.
+}
+
+; Validate with < 0
+define signext i32 @zeroEqualityTest05() {
+; CHECK-LABEL: zeroEqualityTest05:
+; CHECK: # %bb.0:
+; CHECK-NEXT: addis 3, 2, .LzeroEqualityTest03.buffer1@toc@ha
+; CHECK-NEXT: addis 4, 2, .LzeroEqualityTest03.buffer2@toc@ha
+; CHECK-NEXT: addi 6, 3, .LzeroEqualityTest03.buffer1@toc@l
+; CHECK-NEXT: addi 5, 4, .LzeroEqualityTest03.buffer2@toc@l
+; CHECK-NEXT: ldbrx 3, 0, 6
+; CHECK-NEXT: ldbrx 4, 0, 5
+; CHECK-NEXT: cmpld 3, 4
+; CHECK-NEXT: bne 0, .LBB4_2
+; CHECK-NEXT: # %bb.1: # %loadbb1
+; CHECK-NEXT: li 4, 8
+; CHECK-NEXT: ldbrx 3, 6, 4
+; CHECK-NEXT: ldbrx 4, 5, 4
+; CHECK-NEXT: li 5, 0
+; CHECK-NEXT: cmpld 3, 4
+; CHECK-NEXT: beq 0, .LBB4_3
+; CHECK-NEXT: .LBB4_2: # %res_block
+; CHECK-NEXT: cmpld 3, 4
+; CHECK-NEXT: li 3, 1
+; CHECK-NEXT: li 4, -1
+; CHECK-NEXT: isel 5, 4, 3, 0
+; CHECK-NEXT: .LBB4_3: # %endblock
+; CHECK-NEXT: nor 3, 5, 5
+; CHECK-NEXT: rlwinm 3, 3, 1, 31, 31
+; CHECK-NEXT: blr
+ %call = tail call signext i32 @memcmp(i8* bitcast ([4 x i32]* @zeroEqualityTest03.buffer1 to i8*), i8* bitcast ([4 x i32]* @zeroEqualityTest03.buffer2 to i8*), i64 16)
+ %call.lobit = lshr i32 %call, 31
+ %call.lobit.not = xor i32 %call.lobit, 1
+ ret i32 %call.lobit.not
+}
+
+; Validate with memcmp()?:
+define signext i32 @equalityFoldTwoConstants() {
+; CHECK-LABEL: equalityFoldTwoConstants:
+; CHECK: # %bb.0: # %loadbb
+; CHECK-NEXT: li 3, 1
+; CHECK-NEXT: blr
+ %call = tail call signext i32 @memcmp(i8* bitcast ([15 x i32]* @zeroEqualityTest04.buffer1 to i8*), i8* bitcast ([15 x i32]* @zeroEqualityTest04.buffer2 to i8*), i64 16)
+ %not.tobool = icmp eq i32 %call, 0
+ %cond = zext i1 %not.tobool to i32
+ ret i32 %cond
+}
+
+define signext i32 @equalityFoldOneConstant(i8* %X) {
+; CHECK-LABEL: equalityFoldOneConstant:
+; CHECK: # %bb.0:
+; CHECK-NEXT: ld 4, 0(3)
+; CHECK-NEXT: li 5, 1
+; CHECK-NEXT: sldi 5, 5, 32
+; CHECK-NEXT: cmpld 4, 5
+; CHECK-NEXT: bne 0, .LBB6_2
+; CHECK-NEXT: # %bb.1: # %loadbb1
+; CHECK-NEXT: li 4, 3
+; CHECK-NEXT: ld 3, 8(3)
+; CHECK-NEXT: sldi 4, 4, 32
+; CHECK-NEXT: ori 4, 4, 2
+; CHECK-NEXT: cmpld 3, 4
+; CHECK-NEXT: li 3, 0
+; CHECK-NEXT: beq 0, .LBB6_3
+; CHECK-NEXT: .LBB6_2: # %res_block
+; CHECK-NEXT: li 3, 1
+; CHECK-NEXT: .LBB6_3: # %endblock
+; CHECK-NEXT: cntlzw 3, 3
+; CHECK-NEXT: srwi 3, 3, 5
+; CHECK-NEXT: blr
+ %call = tail call signext i32 @memcmp(i8* bitcast ([15 x i32]* @zeroEqualityTest04.buffer1 to i8*), i8* %X, i64 16)
+ %not.tobool = icmp eq i32 %call, 0
+ %cond = zext i1 %not.tobool to i32
+ ret i32 %cond
+}
+
+define i1 @length2_eq_nobuiltin_attr(i8* %X, i8* %Y) nounwind {
+; CHECK-LABEL: length2_eq_nobuiltin_attr:
+; CHECK: # %bb.0:
+; CHECK-NEXT: mflr 0
+; CHECK-NEXT: std 0, 16(1)
+; CHECK-NEXT: stdu 1, -32(1)
+; CHECK-NEXT: li 5, 2
+; CHECK-NEXT: bl memcmp
+; CHECK-NEXT: nop
+; CHECK-NEXT: cntlzw 3, 3
+; CHECK-NEXT: rlwinm 3, 3, 27, 31, 31
+; CHECK-NEXT: addi 1, 1, 32
+; CHECK-NEXT: ld 0, 16(1)
+; CHECK-NEXT: mtlr 0
+; CHECK-NEXT: blr
+ %m = tail call signext i32 @memcmp(i8* %X, i8* %Y, i64 2) nobuiltin
+ %c = icmp eq i32 %m, 0
+ ret i1 %c
+}
+
--- /dev/null
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -verify-machineinstrs -mcpu=pwr8 -mtriple=powerpc64le-unknown-gnu-linux < %s | FileCheck %s -check-prefix=PPC64LE
+
+; This tests interaction between MergeICmp and ExpandMemCmp.
+
+%"struct.std::pair" = type { i32, i32 }
+
+define zeroext i1 @opeq1(
+; PPC64LE-LABEL: opeq1:
+; PPC64LE: # %bb.0: # %"entry+land.rhs.i"
+; PPC64LE-NEXT: ld 3, 0(3)
+; PPC64LE-NEXT: ld 4, 0(4)
+; PPC64LE-NEXT: xor 3, 3, 4
+; PPC64LE-NEXT: cntlzd 3, 3
+; PPC64LE-NEXT: rldicl 3, 3, 58, 63
+; PPC64LE-NEXT: blr
+ %"struct.std::pair"* nocapture readonly dereferenceable(8) %a,
+ %"struct.std::pair"* nocapture readonly dereferenceable(8) %b) local_unnamed_addr #0 {
+entry:
+ %first.i = getelementptr inbounds %"struct.std::pair", %"struct.std::pair"* %a, i64 0, i32 0
+ %0 = load i32, i32* %first.i, align 4
+ %first1.i = getelementptr inbounds %"struct.std::pair", %"struct.std::pair"* %b, i64 0, i32 0
+ %1 = load i32, i32* %first1.i, align 4
+ %cmp.i = icmp eq i32 %0, %1
+ br i1 %cmp.i, label %land.rhs.i, label %opeq1.exit
+
+land.rhs.i:
+ %second.i = getelementptr inbounds %"struct.std::pair", %"struct.std::pair"* %a, i64 0, i32 1
+ %2 = load i32, i32* %second.i, align 4
+ %second2.i = getelementptr inbounds %"struct.std::pair", %"struct.std::pair"* %b, i64 0, i32 1
+ %3 = load i32, i32* %second2.i, align 4
+ %cmp3.i = icmp eq i32 %2, %3
+ br label %opeq1.exit
+
+opeq1.exit:
+ %4 = phi i1 [ false, %entry ], [ %cmp3.i, %land.rhs.i ]
+ ret i1 %4
+}
+
+
--- /dev/null
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -verify-machineinstrs -mcpu=pwr8 -mtriple=powerpc64le-unknown-gnu-linux < %s | FileCheck %s -check-prefix=CHECK
+
+define signext i32 @memcmp8(i32* nocapture readonly %buffer1, i32* nocapture readonly %buffer2) {
+; CHECK-LABEL: memcmp8:
+; CHECK: # %bb.0:
+; CHECK-NEXT: ldbrx 3, 0, 3
+; CHECK-NEXT: ldbrx 4, 0, 4
+; CHECK-NEXT: subfc 5, 3, 4
+; CHECK-NEXT: subfe 5, 4, 4
+; CHECK-NEXT: subfc 4, 4, 3
+; CHECK-NEXT: subfe 3, 3, 3
+; CHECK-NEXT: neg 4, 5
+; CHECK-NEXT: neg 3, 3
+; CHECK-NEXT: subf 3, 3, 4
+; CHECK-NEXT: extsw 3, 3
+; CHECK-NEXT: blr
+ %t0 = bitcast i32* %buffer1 to i8*
+ %t1 = bitcast i32* %buffer2 to i8*
+ %call = tail call signext i32 @memcmp(i8* %t0, i8* %t1, i64 8)
+ ret i32 %call
+}
+
+define signext i32 @memcmp4(i32* nocapture readonly %buffer1, i32* nocapture readonly %buffer2) {
+; CHECK-LABEL: memcmp4:
+; CHECK: # %bb.0:
+; CHECK-NEXT: lwbrx 3, 0, 3
+; CHECK-NEXT: lwbrx 4, 0, 4
+; CHECK-NEXT: sub 5, 4, 3
+; CHECK-NEXT: sub 3, 3, 4
+; CHECK-NEXT: rldicl 4, 5, 1, 63
+; CHECK-NEXT: rldicl 3, 3, 1, 63
+; CHECK-NEXT: subf 3, 3, 4
+; CHECK-NEXT: extsw 3, 3
+; CHECK-NEXT: blr
+ %t0 = bitcast i32* %buffer1 to i8*
+ %t1 = bitcast i32* %buffer2 to i8*
+ %call = tail call signext i32 @memcmp(i8* %t0, i8* %t1, i64 4)
+ ret i32 %call
+}
+
+define signext i32 @memcmp2(i32* nocapture readonly %buffer1, i32* nocapture readonly %buffer2) {
+; CHECK-LABEL: memcmp2:
+; CHECK: # %bb.0:
+; CHECK-NEXT: lhbrx 3, 0, 3
+; CHECK-NEXT: lhbrx 4, 0, 4
+; CHECK-NEXT: subf 3, 4, 3
+; CHECK-NEXT: extsw 3, 3
+; CHECK-NEXT: blr
+ %t0 = bitcast i32* %buffer1 to i8*
+ %t1 = bitcast i32* %buffer2 to i8*
+ %call = tail call signext i32 @memcmp(i8* %t0, i8* %t1, i64 2)
+ ret i32 %call
+}
+
+define signext i32 @memcmp1(i32* nocapture readonly %buffer1, i32* nocapture readonly %buffer2) {
+; CHECK-LABEL: memcmp1:
+; CHECK: # %bb.0:
+; CHECK-NEXT: lbz 3, 0(3)
+; CHECK-NEXT: lbz 4, 0(4)
+; CHECK-NEXT: subf 3, 4, 3
+; CHECK-NEXT: extsw 3, 3
+; CHECK-NEXT: blr
+ %t0 = bitcast i32* %buffer1 to i8*
+ %t1 = bitcast i32* %buffer2 to i8*
+ %call = tail call signext i32 @memcmp(i8* %t0, i8* %t1, i64 1) #2
+ ret i32 %call
+}
+
+declare signext i32 @memcmp(i8*, i8*, i64)
--- /dev/null
+; RUN: llc -o - -mtriple=powerpc64le-unknown-gnu-linux -stop-after codegenprepare %s | FileCheck %s
+; RUN: llc -o - -mtriple=powerpc64-unknown-gnu-linux -stop-after codegenprepare %s | FileCheck %s --check-prefix=CHECK-BE
+
+define signext i32 @test1(i32* nocapture readonly %buffer1, i32* nocapture readonly %buffer2) {
+entry:
+ ; CHECK-LABEL: @test1(
+ ; CHECK: [[LOAD1:%[0-9]+]] = load i64, i64*
+ ; CHECK-NEXT: [[LOAD2:%[0-9]+]] = load i64, i64*
+ ; CHECK-NEXT: [[BSWAP1:%[0-9]+]] = call i64 @llvm.bswap.i64(i64 [[LOAD1]])
+ ; CHECK-NEXT: [[BSWAP2:%[0-9]+]] = call i64 @llvm.bswap.i64(i64 [[LOAD2]])
+ ; CHECK-NEXT: [[ICMP:%[0-9]+]] = icmp eq i64 [[BSWAP1]], [[BSWAP2]]
+ ; CHECK-NEXT: br i1 [[ICMP]], label %loadbb1, label %res_block
+
+ ; CHECK-LABEL: res_block:{{.*}}
+ ; CHECK: [[ICMP2:%[0-9]+]] = icmp ult i64
+ ; CHECK-NEXT: [[SELECT:%[0-9]+]] = select i1 [[ICMP2]], i32 -1, i32 1
+ ; CHECK-NEXT: br label %endblock
+
+ ; CHECK-LABEL: loadbb1:{{.*}}
+ ; CHECK: [[BCC1:%[0-9]+]] = bitcast i32* {{.*}} to i8*
+ ; CHECK-NEXT: [[BCC2:%[0-9]+]] = bitcast i32* {{.*}} to i8*
+ ; CHECK-NEXT: [[GEP1:%[0-9]+]] = getelementptr i8, i8* [[BCC2]], i8 8
+ ; CHECK-NEXT: [[BCL1:%[0-9]+]] = bitcast i8* [[GEP1]] to i64*
+ ; CHECK-NEXT: [[GEP2:%[0-9]+]] = getelementptr i8, i8* [[BCC1]], i8 8
+ ; CHECK-NEXT: [[BCL2:%[0-9]+]] = bitcast i8* [[GEP2]] to i64*
+ ; CHECK-NEXT: [[LOAD1:%[0-9]+]] = load i64, i64* [[BCL1]]
+ ; CHECK-NEXT: [[LOAD2:%[0-9]+]] = load i64, i64* [[BCL2]]
+ ; CHECK-NEXT: [[BSWAP1:%[0-9]+]] = call i64 @llvm.bswap.i64(i64 [[LOAD1]])
+ ; CHECK-NEXT: [[BSWAP2:%[0-9]+]] = call i64 @llvm.bswap.i64(i64 [[LOAD2]])
+ ; CHECK-NEXT: [[ICMP:%[0-9]+]] = icmp eq i64 [[BSWAP1]], [[BSWAP2]]
+ ; CHECK-NEXT: br i1 [[ICMP]], label %endblock, label %res_block
+
+ ; CHECK-BE-LABEL: @test1(
+ ; CHECK-BE: [[LOAD1:%[0-9]+]] = load i64, i64*
+ ; CHECK-BE-NEXT: [[LOAD2:%[0-9]+]] = load i64, i64*
+ ; CHECK-BE-NEXT: [[ICMP:%[0-9]+]] = icmp eq i64 [[LOAD1]], [[LOAD2]]
+ ; CHECK-BE-NEXT: br i1 [[ICMP]], label %loadbb1, label %res_block
+
+ ; CHECK-BE-LABEL: res_block:{{.*}}
+ ; CHECK-BE: [[ICMP2:%[0-9]+]] = icmp ult i64
+ ; CHECK-BE-NEXT: [[SELECT:%[0-9]+]] = select i1 [[ICMP2]], i32 -1, i32 1
+ ; CHECK-BE-NEXT: br label %endblock
+
+ ; CHECK-BE-LABEL: loadbb1:{{.*}}
+ ; CHECK-BE: [[BCC1:%[0-9]+]] = bitcast i32* {{.*}} to i8*
+ ; CHECK-BE-NEXT: [[BCC2:%[0-9]+]] = bitcast i32* {{.*}} to i8*
+ ; CHECK-BE-NEXT: [[GEP1:%[0-9]+]] = getelementptr i8, i8* [[BCC2]], i8 8
+ ; CHECK-BE-NEXT: [[BCL1:%[0-9]+]] = bitcast i8* [[GEP1]] to i64*
+ ; CHECK-BE-NEXT: [[GEP2:%[0-9]+]] = getelementptr i8, i8* [[BCC1]], i8 8
+ ; CHECK-BE-NEXT: [[BCL2:%[0-9]+]] = bitcast i8* [[GEP2]] to i64*
+ ; CHECK-BE-NEXT: [[LOAD1:%[0-9]+]] = load i64, i64* [[BCL1]]
+ ; CHECK-BE-NEXT: [[LOAD2:%[0-9]+]] = load i64, i64* [[BCL2]]
+ ; CHECK-BE-NEXT: [[ICMP:%[0-9]+]] = icmp eq i64 [[LOAD1]], [[LOAD2]]
+ ; CHECK-BE-NEXT: br i1 [[ICMP]], label %endblock, label %res_block
+
+ %0 = bitcast i32* %buffer1 to i8*
+ %1 = bitcast i32* %buffer2 to i8*
+ %call = tail call signext i32 @memcmp(i8* %0, i8* %1, i64 16)
+ ret i32 %call
+}
+
+declare signext i32 @memcmp(i8* nocapture, i8* nocapture, i64) local_unnamed_addr #1
+
+define signext i32 @test2(i32* nocapture readonly %buffer1, i32* nocapture readonly %buffer2) {
+ ; CHECK-LABEL: @test2(
+ ; CHECK: [[LOAD1:%[0-9]+]] = load i32, i32*
+ ; CHECK-NEXT: [[LOAD2:%[0-9]+]] = load i32, i32*
+ ; CHECK-NEXT: [[BSWAP1:%[0-9]+]] = call i32 @llvm.bswap.i32(i32 [[LOAD1]])
+ ; CHECK-NEXT: [[BSWAP2:%[0-9]+]] = call i32 @llvm.bswap.i32(i32 [[LOAD2]])
+ ; CHECK-NEXT: [[CMP1:%[0-9]+]] = icmp ugt i32 [[BSWAP1]], [[BSWAP2]]
+ ; CHECK-NEXT: [[CMP2:%[0-9]+]] = icmp ult i32 [[BSWAP1]], [[BSWAP2]]
+ ; CHECK-NEXT: [[Z1:%[0-9]+]] = zext i1 [[CMP1]] to i32
+ ; CHECK-NEXT: [[Z2:%[0-9]+]] = zext i1 [[CMP2]] to i32
+ ; CHECK-NEXT: [[SUB:%[0-9]+]] = sub i32 [[Z1]], [[Z2]]
+ ; CHECK-NEXT: ret i32 [[SUB]]
+
+ ; CHECK-BE-LABEL: @test2(
+ ; CHECK-BE: [[LOAD1:%[0-9]+]] = load i32, i32*
+ ; CHECK-BE-NEXT: [[LOAD2:%[0-9]+]] = load i32, i32*
+ ; CHECK-BE-NEXT: [[CMP1:%[0-9]+]] = icmp ugt i32 [[LOAD1]], [[LOAD2]]
+ ; CHECK-BE-NEXT: [[CMP2:%[0-9]+]] = icmp ult i32 [[LOAD1]], [[LOAD2]]
+ ; CHECK-BE-NEXT: [[Z1:%[0-9]+]] = zext i1 [[CMP1]] to i32
+ ; CHECK-BE-NEXT: [[Z2:%[0-9]+]] = zext i1 [[CMP2]] to i32
+ ; CHECK-BE-NEXT: [[SUB:%[0-9]+]] = sub i32 [[Z1]], [[Z2]]
+ ; CHECK-BE-NEXT: ret i32 [[SUB]]
+
+entry:
+ %0 = bitcast i32* %buffer1 to i8*
+ %1 = bitcast i32* %buffer2 to i8*
+ %call = tail call signext i32 @memcmp(i8* %0, i8* %1, i64 4)
+ ret i32 %call
+}
+
+define signext i32 @test3(i32* nocapture readonly %buffer1, i32* nocapture readonly %buffer2) {
+ ; CHECK: [[LOAD1:%[0-9]+]] = load i64, i64*
+ ; CHECK-NEXT: [[LOAD2:%[0-9]+]] = load i64, i64*
+ ; CHECK-NEXT: [[BSWAP1:%[0-9]+]] = call i64 @llvm.bswap.i64(i64 [[LOAD1]])
+ ; CHECK-NEXT: [[BSWAP2:%[0-9]+]] = call i64 @llvm.bswap.i64(i64 [[LOAD2]])
+ ; CHECK-NEXT: [[ICMP:%[0-9]+]] = icmp eq i64 [[BSWAP1]], [[BSWAP2]]
+ ; CHECK-NEXT: br i1 [[ICMP]], label %loadbb1, label %res_block
+
+ ; CHECK-LABEL: res_block:{{.*}}
+ ; CHECK: [[ICMP2:%[0-9]+]] = icmp ult i64
+ ; CHECK-NEXT: [[SELECT:%[0-9]+]] = select i1 [[ICMP2]], i32 -1, i32 1
+ ; CHECK-NEXT: br label %endblock
+
+ ; CHECK-LABEL: loadbb1:{{.*}}
+ ; CHECK: [[LOAD1:%[0-9]+]] = load i32, i32*
+ ; CHECK-NEXT: [[LOAD2:%[0-9]+]] = load i32, i32*
+ ; CHECK-NEXT: [[BSWAP1:%[0-9]+]] = call i32 @llvm.bswap.i32(i32 [[LOAD1]])
+ ; CHECK-NEXT: [[BSWAP2:%[0-9]+]] = call i32 @llvm.bswap.i32(i32 [[LOAD2]])
+ ; CHECK-NEXT: [[ZEXT1:%[0-9]+]] = zext i32 [[BSWAP1]] to i64
+ ; CHECK-NEXT: [[ZEXT2:%[0-9]+]] = zext i32 [[BSWAP2]] to i64
+ ; CHECK-NEXT: [[ICMP:%[0-9]+]] = icmp eq i64 [[ZEXT1]], [[ZEXT2]]
+ ; CHECK-NEXT: br i1 [[ICMP]], label %loadbb2, label %res_block
+
+ ; CHECK-LABEL: loadbb2:{{.*}}
+ ; CHECK: [[LOAD1:%[0-9]+]] = load i16, i16*
+ ; CHECK-NEXT: [[LOAD2:%[0-9]+]] = load i16, i16*
+ ; CHECK-NEXT: [[BSWAP1:%[0-9]+]] = call i16 @llvm.bswap.i16(i16 [[LOAD1]])
+ ; CHECK-NEXT: [[BSWAP2:%[0-9]+]] = call i16 @llvm.bswap.i16(i16 [[LOAD2]])
+ ; CHECK-NEXT: [[ZEXT1:%[0-9]+]] = zext i16 [[BSWAP1]] to i64
+ ; CHECK-NEXT: [[ZEXT2:%[0-9]+]] = zext i16 [[BSWAP2]] to i64
+ ; CHECK-NEXT: [[ICMP:%[0-9]+]] = icmp eq i64 [[ZEXT1]], [[ZEXT2]]
+ ; CHECK-NEXT: br i1 [[ICMP]], label %loadbb3, label %res_block
+
+ ; CHECK-LABEL: loadbb3:{{.*}}
+ ; CHECK: [[LOAD1:%[0-9]+]] = load i8, i8*
+ ; CHECK-NEXT: [[LOAD2:%[0-9]+]] = load i8, i8*
+ ; CHECK-NEXT: [[ZEXT1:%[0-9]+]] = zext i8 [[LOAD1]] to i32
+ ; CHECK-NEXT: [[ZEXT2:%[0-9]+]] = zext i8 [[LOAD2]] to i32
+ ; CHECK-NEXT: [[SUB:%[0-9]+]] = sub i32 [[ZEXT1]], [[ZEXT2]]
+ ; CHECK-NEXT: br label %endblock
+
+ ; CHECK-BE: [[LOAD1:%[0-9]+]] = load i64, i64*
+ ; CHECK-BE-NEXT: [[LOAD2:%[0-9]+]] = load i64, i64*
+ ; CHECK-BE-NEXT: [[ICMP:%[0-9]+]] = icmp eq i64 [[LOAD1]], [[LOAD2]]
+ ; CHECK-BE-NEXT: br i1 [[ICMP]], label %loadbb1, label %res_block
+
+ ; CHECK-BE-LABEL: res_block:{{.*}}
+ ; CHECK-BE: [[ICMP2:%[0-9]+]] = icmp ult i64
+ ; CHECK-BE-NEXT: [[SELECT:%[0-9]+]] = select i1 [[ICMP2]], i32 -1, i32 1
+ ; CHECK-BE-NEXT: br label %endblock
+
+ ; CHECK-BE: [[LOAD1:%[0-9]+]] = load i32, i32*
+ ; CHECK-BE-NEXT: [[LOAD2:%[0-9]+]] = load i32, i32*
+ ; CHECK-BE-NEXT: [[ZEXT1:%[0-9]+]] = zext i32 [[LOAD1]] to i64
+ ; CHECK-BE-NEXT: [[ZEXT2:%[0-9]+]] = zext i32 [[LOAD2]] to i64
+ ; CHECK-BE-NEXT: [[ICMP:%[0-9]+]] = icmp eq i64 [[ZEXT1]], [[ZEXT2]]
+ ; CHECK-BE-NEXT: br i1 [[ICMP]], label %loadbb2, label %res_block
+
+ ; CHECK-BE: [[LOAD1:%[0-9]+]] = load i16, i16*
+ ; CHECK-BE-NEXT: [[LOAD2:%[0-9]+]] = load i16, i16*
+ ; CHECK-BE-NEXT: [[ZEXT1:%[0-9]+]] = zext i16 [[LOAD1]] to i64
+ ; CHECK-BE-NEXT: [[ZEXT2:%[0-9]+]] = zext i16 [[LOAD2]] to i64
+ ; CHECK-BE-NEXT: [[ICMP:%[0-9]+]] = icmp eq i64 [[ZEXT1]], [[ZEXT2]]
+ ; CHECK-BE-NEXT: br i1 [[ICMP]], label %loadbb3, label %res_block
+
+ ; CHECK-BE: [[LOAD1:%[0-9]+]] = load i8, i8*
+ ; CHECK-BE-NEXT: [[LOAD2:%[0-9]+]] = load i8, i8*
+ ; CHECK-BE-NEXT: [[ZEXT1:%[0-9]+]] = zext i8 [[LOAD1]] to i32
+ ; CHECK-BE-NEXT: [[ZEXT2:%[0-9]+]] = zext i8 [[LOAD2]] to i32
+ ; CHECK-BE-NEXT: [[SUB:%[0-9]+]] = sub i32 [[ZEXT1]], [[ZEXT2]]
+ ; CHECK-BE-NEXT: br label %endblock
+
+entry:
+ %0 = bitcast i32* %buffer1 to i8*
+ %1 = bitcast i32* %buffer2 to i8*
+ %call = tail call signext i32 @memcmp(i8* %0, i8* %1, i64 15)
+ ret i32 %call
+}
+ ; CHECK: call = tail call signext i32 @memcmp
+ ; CHECK-BE: call = tail call signext i32 @memcmp
+define signext i32 @test4(i32* nocapture readonly %buffer1, i32* nocapture readonly %buffer2) {
+
+entry:
+ %0 = bitcast i32* %buffer1 to i8*
+ %1 = bitcast i32* %buffer2 to i8*
+ %call = tail call signext i32 @memcmp(i8* %0, i8* %1, i64 65)
+ ret i32 %call
+}
+
+define signext i32 @test5(i32* nocapture readonly %buffer1, i32* nocapture readonly %buffer2, i32 signext %SIZE) {
+ ; CHECK: call = tail call signext i32 @memcmp
+ ; CHECK-BE: call = tail call signext i32 @memcmp
+entry:
+ %0 = bitcast i32* %buffer1 to i8*
+ %1 = bitcast i32* %buffer2 to i8*
+ %conv = sext i32 %SIZE to i64
+ %call = tail call signext i32 @memcmp(i8* %0, i8* %1, i64 %conv)
+ ret i32 %call
+}
; CHECK-NEXT: Loop Pass Manager
; CHECK-NEXT: Induction Variable Users
; CHECK-NEXT: Loop Strength Reduction
+; CHECK-NEXT: Basic Alias Analysis (stateless AA impl)
+; CHECK-NEXT: Function Alias Analysis Results
+; CHECK-NEXT: Merge contiguous icmps into a memcmp
+; CHECK-NEXT: Expand memcmp() to load/stores
; CHECK-NEXT: Lower Garbage Collection Instructions
; CHECK-NEXT: Shadow Stack GC Lowering
; CHECK-NEXT: Remove unreachable blocks from the CFG
--- /dev/null
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc < %s -mtriple=i686-unknown-unknown | FileCheck %s --check-prefix=X86
+; RUN: llc < %s -mtriple=x86_64-unknown-unknown | FileCheck %s --check-prefix=X64
+
+; This tests interaction between MergeICmp and ExpandMemCmp.
+
+%"struct.std::pair" = type { i32, i32 }
+
+define zeroext i1 @opeq1(
+; X86-LABEL: opeq1:
+; X86: # %bb.0: # %"entry+land.rhs.i"
+; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT: movl {{[0-9]+}}(%esp), %ecx
+; X86-NEXT: movl (%ecx), %edx
+; X86-NEXT: movl 4(%ecx), %ecx
+; X86-NEXT: xorl (%eax), %edx
+; X86-NEXT: xorl 4(%eax), %ecx
+; X86-NEXT: orl %edx, %ecx
+; X86-NEXT: sete %al
+; X86-NEXT: retl
+;
+; X64-LABEL: opeq1:
+; X64: # %bb.0: # %"entry+land.rhs.i"
+; X64-NEXT: movq (%rdi), %rax
+; X64-NEXT: cmpq (%rsi), %rax
+; X64-NEXT: sete %al
+; X64-NEXT: retq
+ %"struct.std::pair"* nocapture readonly dereferenceable(8) %a,
+ %"struct.std::pair"* nocapture readonly dereferenceable(8) %b) local_unnamed_addr #0 {
+entry:
+ %first.i = getelementptr inbounds %"struct.std::pair", %"struct.std::pair"* %a, i64 0, i32 0
+ %0 = load i32, i32* %first.i, align 4
+ %first1.i = getelementptr inbounds %"struct.std::pair", %"struct.std::pair"* %b, i64 0, i32 0
+ %1 = load i32, i32* %first1.i, align 4
+ %cmp.i = icmp eq i32 %0, %1
+ br i1 %cmp.i, label %land.rhs.i, label %opeq1.exit
+
+land.rhs.i:
+ %second.i = getelementptr inbounds %"struct.std::pair", %"struct.std::pair"* %a, i64 0, i32 1
+ %2 = load i32, i32* %second.i, align 4
+ %second2.i = getelementptr inbounds %"struct.std::pair", %"struct.std::pair"* %b, i64 0, i32 1
+ %3 = load i32, i32* %second2.i, align 4
+ %cmp3.i = icmp eq i32 %2, %3
+ br label %opeq1.exit
+
+opeq1.exit:
+ %4 = phi i1 [ false, %entry ], [ %cmp3.i, %land.rhs.i ]
+ ret i1 %4
+}
+
+
--- /dev/null
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc < %s -mtriple=i686-unknown-unknown -mattr=cmov | FileCheck %s --check-prefix=X86 --check-prefix=X86-NOSSE
+; RUN: llc < %s -mtriple=i686-unknown-unknown -mattr=+sse2 | FileCheck %s --check-prefix=X86 --check-prefix=X86-SSE2
+; RUN: llc < %s -mtriple=x86_64-unknown-unknown | FileCheck %s --check-prefix=X64 --check-prefix=X64-SSE2
+; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=avx2 | FileCheck %s --check-prefix=X64 --check-prefix=X64-AVX2
+
+; This tests codegen time inlining/optimization of memcmp
+; rdar://6480398
+
+@.str = private constant [65 x i8] c"0123456789012345678901234567890123456789012345678901234567890123\00", align 1
+
+declare i32 @memcmp(i8*, i8*, i64)
+declare i32 @bcmp(i8*, i8*, i64)
+
+define i32 @length2(i8* %X, i8* %Y) nounwind optsize {
+; X86-LABEL: length2:
+; X86: # %bb.0:
+; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT: movl {{[0-9]+}}(%esp), %ecx
+; X86-NEXT: movzwl (%ecx), %ecx
+; X86-NEXT: movzwl (%eax), %edx
+; X86-NEXT: rolw $8, %cx
+; X86-NEXT: rolw $8, %dx
+; X86-NEXT: movzwl %cx, %eax
+; X86-NEXT: movzwl %dx, %ecx
+; X86-NEXT: subl %ecx, %eax
+; X86-NEXT: retl
+;
+; X64-LABEL: length2:
+; X64: # %bb.0:
+; X64-NEXT: movzwl (%rdi), %eax
+; X64-NEXT: movzwl (%rsi), %ecx
+; X64-NEXT: rolw $8, %ax
+; X64-NEXT: rolw $8, %cx
+; X64-NEXT: movzwl %ax, %eax
+; X64-NEXT: movzwl %cx, %ecx
+; X64-NEXT: subl %ecx, %eax
+; X64-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 2) nounwind
+ ret i32 %m
+}
+
+define i1 @length2_eq(i8* %X, i8* %Y) nounwind optsize {
+; X86-LABEL: length2_eq:
+; X86: # %bb.0:
+; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT: movl {{[0-9]+}}(%esp), %ecx
+; X86-NEXT: movzwl (%ecx), %ecx
+; X86-NEXT: cmpw (%eax), %cx
+; X86-NEXT: sete %al
+; X86-NEXT: retl
+;
+; X64-LABEL: length2_eq:
+; X64: # %bb.0:
+; X64-NEXT: movzwl (%rdi), %eax
+; X64-NEXT: cmpw (%rsi), %ax
+; X64-NEXT: sete %al
+; X64-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 2) nounwind
+ %c = icmp eq i32 %m, 0
+ ret i1 %c
+}
+
+define i1 @length2_eq_const(i8* %X) nounwind optsize {
+; X86-LABEL: length2_eq_const:
+; X86: # %bb.0:
+; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT: movzwl (%eax), %eax
+; X86-NEXT: cmpl $12849, %eax # imm = 0x3231
+; X86-NEXT: setne %al
+; X86-NEXT: retl
+;
+; X64-LABEL: length2_eq_const:
+; X64: # %bb.0:
+; X64-NEXT: movzwl (%rdi), %eax
+; X64-NEXT: cmpl $12849, %eax # imm = 0x3231
+; X64-NEXT: setne %al
+; X64-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* getelementptr inbounds ([65 x i8], [65 x i8]* @.str, i32 0, i32 1), i64 2) nounwind
+ %c = icmp ne i32 %m, 0
+ ret i1 %c
+}
+
+define i1 @length2_eq_nobuiltin_attr(i8* %X, i8* %Y) nounwind optsize {
+; X86-LABEL: length2_eq_nobuiltin_attr:
+; X86: # %bb.0:
+; X86-NEXT: pushl $0
+; X86-NEXT: pushl $2
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: calll memcmp
+; X86-NEXT: addl $16, %esp
+; X86-NEXT: testl %eax, %eax
+; X86-NEXT: sete %al
+; X86-NEXT: retl
+;
+; X64-LABEL: length2_eq_nobuiltin_attr:
+; X64: # %bb.0:
+; X64-NEXT: pushq %rax
+; X64-NEXT: movl $2, %edx
+; X64-NEXT: callq memcmp
+; X64-NEXT: testl %eax, %eax
+; X64-NEXT: sete %al
+; X64-NEXT: popq %rcx
+; X64-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 2) nounwind nobuiltin
+ %c = icmp eq i32 %m, 0
+ ret i1 %c
+}
+
+define i32 @length3(i8* %X, i8* %Y) nounwind optsize {
+; X86-LABEL: length3:
+; X86: # %bb.0: # %loadbb
+; X86-NEXT: pushl %esi
+; X86-NEXT: movl {{[0-9]+}}(%esp), %ecx
+; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT: movzwl (%eax), %edx
+; X86-NEXT: movzwl (%ecx), %esi
+; X86-NEXT: rolw $8, %dx
+; X86-NEXT: rolw $8, %si
+; X86-NEXT: cmpw %si, %dx
+; X86-NEXT: jne .LBB4_1
+; X86-NEXT: # %bb.2: # %loadbb1
+; X86-NEXT: movzbl 2(%eax), %eax
+; X86-NEXT: movzbl 2(%ecx), %ecx
+; X86-NEXT: subl %ecx, %eax
+; X86-NEXT: jmp .LBB4_3
+; X86-NEXT: .LBB4_1: # %res_block
+; X86-NEXT: setae %al
+; X86-NEXT: movzbl %al, %eax
+; X86-NEXT: leal -1(%eax,%eax), %eax
+; X86-NEXT: .LBB4_3: # %endblock
+; X86-NEXT: popl %esi
+; X86-NEXT: retl
+;
+; X64-LABEL: length3:
+; X64: # %bb.0: # %loadbb
+; X64-NEXT: movzwl (%rdi), %eax
+; X64-NEXT: movzwl (%rsi), %ecx
+; X64-NEXT: rolw $8, %ax
+; X64-NEXT: rolw $8, %cx
+; X64-NEXT: cmpw %cx, %ax
+; X64-NEXT: jne .LBB4_1
+; X64-NEXT: # %bb.2: # %loadbb1
+; X64-NEXT: movzbl 2(%rdi), %eax
+; X64-NEXT: movzbl 2(%rsi), %ecx
+; X64-NEXT: subl %ecx, %eax
+; X64-NEXT: retq
+; X64-NEXT: .LBB4_1: # %res_block
+; X64-NEXT: setae %al
+; X64-NEXT: movzbl %al, %eax
+; X64-NEXT: leal -1(%rax,%rax), %eax
+; X64-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 3) nounwind
+ ret i32 %m
+}
+
+define i1 @length3_eq(i8* %X, i8* %Y) nounwind optsize {
+; X86-LABEL: length3_eq:
+; X86: # %bb.0:
+; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT: movl {{[0-9]+}}(%esp), %ecx
+; X86-NEXT: movzwl (%ecx), %edx
+; X86-NEXT: xorw (%eax), %dx
+; X86-NEXT: movb 2(%ecx), %cl
+; X86-NEXT: xorb 2(%eax), %cl
+; X86-NEXT: movzbl %cl, %eax
+; X86-NEXT: orw %dx, %ax
+; X86-NEXT: setne %al
+; X86-NEXT: retl
+;
+; X64-LABEL: length3_eq:
+; X64: # %bb.0:
+; X64-NEXT: movzwl (%rdi), %eax
+; X64-NEXT: xorw (%rsi), %ax
+; X64-NEXT: movb 2(%rdi), %cl
+; X64-NEXT: xorb 2(%rsi), %cl
+; X64-NEXT: movzbl %cl, %ecx
+; X64-NEXT: orw %ax, %cx
+; X64-NEXT: setne %al
+; X64-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 3) nounwind
+ %c = icmp ne i32 %m, 0
+ ret i1 %c
+}
+
+define i32 @length4(i8* %X, i8* %Y) nounwind optsize {
+; X86-LABEL: length4:
+; X86: # %bb.0:
+; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT: movl {{[0-9]+}}(%esp), %ecx
+; X86-NEXT: movl (%ecx), %ecx
+; X86-NEXT: movl (%eax), %edx
+; X86-NEXT: bswapl %ecx
+; X86-NEXT: bswapl %edx
+; X86-NEXT: xorl %eax, %eax
+; X86-NEXT: cmpl %edx, %ecx
+; X86-NEXT: seta %al
+; X86-NEXT: sbbl $0, %eax
+; X86-NEXT: retl
+;
+; X64-LABEL: length4:
+; X64: # %bb.0:
+; X64-NEXT: movl (%rdi), %ecx
+; X64-NEXT: movl (%rsi), %edx
+; X64-NEXT: bswapl %ecx
+; X64-NEXT: bswapl %edx
+; X64-NEXT: xorl %eax, %eax
+; X64-NEXT: cmpl %edx, %ecx
+; X64-NEXT: seta %al
+; X64-NEXT: sbbl $0, %eax
+; X64-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 4) nounwind
+ ret i32 %m
+}
+
+define i1 @length4_eq(i8* %X, i8* %Y) nounwind optsize {
+; X86-LABEL: length4_eq:
+; X86: # %bb.0:
+; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT: movl {{[0-9]+}}(%esp), %ecx
+; X86-NEXT: movl (%ecx), %ecx
+; X86-NEXT: cmpl (%eax), %ecx
+; X86-NEXT: setne %al
+; X86-NEXT: retl
+;
+; X64-LABEL: length4_eq:
+; X64: # %bb.0:
+; X64-NEXT: movl (%rdi), %eax
+; X64-NEXT: cmpl (%rsi), %eax
+; X64-NEXT: setne %al
+; X64-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 4) nounwind
+ %c = icmp ne i32 %m, 0
+ ret i1 %c
+}
+
+define i1 @length4_eq_const(i8* %X) nounwind optsize {
+; X86-LABEL: length4_eq_const:
+; X86: # %bb.0:
+; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT: cmpl $875770417, (%eax) # imm = 0x34333231
+; X86-NEXT: sete %al
+; X86-NEXT: retl
+;
+; X64-LABEL: length4_eq_const:
+; X64: # %bb.0:
+; X64-NEXT: cmpl $875770417, (%rdi) # imm = 0x34333231
+; X64-NEXT: sete %al
+; X64-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* getelementptr inbounds ([65 x i8], [65 x i8]* @.str, i32 0, i32 1), i64 4) nounwind
+ %c = icmp eq i32 %m, 0
+ ret i1 %c
+}
+
+define i32 @length5(i8* %X, i8* %Y) nounwind optsize {
+; X86-LABEL: length5:
+; X86: # %bb.0: # %loadbb
+; X86-NEXT: pushl %esi
+; X86-NEXT: movl {{[0-9]+}}(%esp), %ecx
+; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT: movl (%eax), %edx
+; X86-NEXT: movl (%ecx), %esi
+; X86-NEXT: bswapl %edx
+; X86-NEXT: bswapl %esi
+; X86-NEXT: cmpl %esi, %edx
+; X86-NEXT: jne .LBB9_1
+; X86-NEXT: # %bb.2: # %loadbb1
+; X86-NEXT: movzbl 4(%eax), %eax
+; X86-NEXT: movzbl 4(%ecx), %ecx
+; X86-NEXT: subl %ecx, %eax
+; X86-NEXT: jmp .LBB9_3
+; X86-NEXT: .LBB9_1: # %res_block
+; X86-NEXT: setae %al
+; X86-NEXT: movzbl %al, %eax
+; X86-NEXT: leal -1(%eax,%eax), %eax
+; X86-NEXT: .LBB9_3: # %endblock
+; X86-NEXT: popl %esi
+; X86-NEXT: retl
+;
+; X64-LABEL: length5:
+; X64: # %bb.0: # %loadbb
+; X64-NEXT: movl (%rdi), %eax
+; X64-NEXT: movl (%rsi), %ecx
+; X64-NEXT: bswapl %eax
+; X64-NEXT: bswapl %ecx
+; X64-NEXT: cmpl %ecx, %eax
+; X64-NEXT: jne .LBB9_1
+; X64-NEXT: # %bb.2: # %loadbb1
+; X64-NEXT: movzbl 4(%rdi), %eax
+; X64-NEXT: movzbl 4(%rsi), %ecx
+; X64-NEXT: subl %ecx, %eax
+; X64-NEXT: retq
+; X64-NEXT: .LBB9_1: # %res_block
+; X64-NEXT: setae %al
+; X64-NEXT: movzbl %al, %eax
+; X64-NEXT: leal -1(%rax,%rax), %eax
+; X64-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 5) nounwind
+ ret i32 %m
+}
+
+define i1 @length5_eq(i8* %X, i8* %Y) nounwind optsize {
+; X86-LABEL: length5_eq:
+; X86: # %bb.0:
+; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT: movl {{[0-9]+}}(%esp), %ecx
+; X86-NEXT: movl (%ecx), %edx
+; X86-NEXT: xorl (%eax), %edx
+; X86-NEXT: movb 4(%ecx), %cl
+; X86-NEXT: xorb 4(%eax), %cl
+; X86-NEXT: movzbl %cl, %eax
+; X86-NEXT: orl %edx, %eax
+; X86-NEXT: setne %al
+; X86-NEXT: retl
+;
+; X64-LABEL: length5_eq:
+; X64: # %bb.0:
+; X64-NEXT: movl (%rdi), %eax
+; X64-NEXT: xorl (%rsi), %eax
+; X64-NEXT: movb 4(%rdi), %cl
+; X64-NEXT: xorb 4(%rsi), %cl
+; X64-NEXT: movzbl %cl, %ecx
+; X64-NEXT: orl %eax, %ecx
+; X64-NEXT: setne %al
+; X64-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 5) nounwind
+ %c = icmp ne i32 %m, 0
+ ret i1 %c
+}
+
+define i32 @length8(i8* %X, i8* %Y) nounwind optsize {
+; X86-LABEL: length8:
+; X86: # %bb.0:
+; X86-NEXT: pushl %esi
+; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT: movl {{[0-9]+}}(%esp), %esi
+; X86-NEXT: movl (%esi), %ecx
+; X86-NEXT: movl (%eax), %edx
+; X86-NEXT: bswapl %ecx
+; X86-NEXT: bswapl %edx
+; X86-NEXT: cmpl %edx, %ecx
+; X86-NEXT: jne .LBB11_2
+; X86-NEXT: # %bb.1: # %loadbb1
+; X86-NEXT: movl 4(%esi), %ecx
+; X86-NEXT: movl 4(%eax), %edx
+; X86-NEXT: bswapl %ecx
+; X86-NEXT: bswapl %edx
+; X86-NEXT: xorl %eax, %eax
+; X86-NEXT: cmpl %edx, %ecx
+; X86-NEXT: je .LBB11_3
+; X86-NEXT: .LBB11_2: # %res_block
+; X86-NEXT: xorl %eax, %eax
+; X86-NEXT: cmpl %edx, %ecx
+; X86-NEXT: setae %al
+; X86-NEXT: leal -1(%eax,%eax), %eax
+; X86-NEXT: .LBB11_3: # %endblock
+; X86-NEXT: popl %esi
+; X86-NEXT: retl
+;
+; X64-LABEL: length8:
+; X64: # %bb.0:
+; X64-NEXT: movq (%rdi), %rcx
+; X64-NEXT: movq (%rsi), %rdx
+; X64-NEXT: bswapq %rcx
+; X64-NEXT: bswapq %rdx
+; X64-NEXT: xorl %eax, %eax
+; X64-NEXT: cmpq %rdx, %rcx
+; X64-NEXT: seta %al
+; X64-NEXT: sbbl $0, %eax
+; X64-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 8) nounwind
+ ret i32 %m
+}
+
+define i1 @length8_eq(i8* %X, i8* %Y) nounwind optsize {
+; X86-LABEL: length8_eq:
+; X86: # %bb.0:
+; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT: movl {{[0-9]+}}(%esp), %ecx
+; X86-NEXT: movl (%ecx), %edx
+; X86-NEXT: movl 4(%ecx), %ecx
+; X86-NEXT: xorl (%eax), %edx
+; X86-NEXT: xorl 4(%eax), %ecx
+; X86-NEXT: orl %edx, %ecx
+; X86-NEXT: sete %al
+; X86-NEXT: retl
+;
+; X64-LABEL: length8_eq:
+; X64: # %bb.0:
+; X64-NEXT: movq (%rdi), %rax
+; X64-NEXT: cmpq (%rsi), %rax
+; X64-NEXT: sete %al
+; X64-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 8) nounwind
+ %c = icmp eq i32 %m, 0
+ ret i1 %c
+}
+
+define i1 @length8_eq_const(i8* %X) nounwind optsize {
+; X86-LABEL: length8_eq_const:
+; X86: # %bb.0:
+; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT: movl $858927408, %ecx # imm = 0x33323130
+; X86-NEXT: xorl (%eax), %ecx
+; X86-NEXT: movl $926299444, %edx # imm = 0x37363534
+; X86-NEXT: xorl 4(%eax), %edx
+; X86-NEXT: orl %ecx, %edx
+; X86-NEXT: setne %al
+; X86-NEXT: retl
+;
+; X64-LABEL: length8_eq_const:
+; X64: # %bb.0:
+; X64-NEXT: movabsq $3978425819141910832, %rax # imm = 0x3736353433323130
+; X64-NEXT: cmpq %rax, (%rdi)
+; X64-NEXT: setne %al
+; X64-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* getelementptr inbounds ([65 x i8], [65 x i8]* @.str, i32 0, i32 0), i64 8) nounwind
+ %c = icmp ne i32 %m, 0
+ ret i1 %c
+}
+
+define i1 @length12_eq(i8* %X, i8* %Y) nounwind optsize {
+; X86-LABEL: length12_eq:
+; X86: # %bb.0:
+; X86-NEXT: pushl $0
+; X86-NEXT: pushl $12
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: calll memcmp
+; X86-NEXT: addl $16, %esp
+; X86-NEXT: testl %eax, %eax
+; X86-NEXT: setne %al
+; X86-NEXT: retl
+;
+; X64-LABEL: length12_eq:
+; X64: # %bb.0:
+; X64-NEXT: movq (%rdi), %rax
+; X64-NEXT: xorq (%rsi), %rax
+; X64-NEXT: movl 8(%rdi), %ecx
+; X64-NEXT: xorl 8(%rsi), %ecx
+; X64-NEXT: orq %rax, %rcx
+; X64-NEXT: setne %al
+; X64-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 12) nounwind
+ %c = icmp ne i32 %m, 0
+ ret i1 %c
+}
+
+define i32 @length12(i8* %X, i8* %Y) nounwind optsize {
+; X86-LABEL: length12:
+; X86: # %bb.0:
+; X86-NEXT: pushl $0
+; X86-NEXT: pushl $12
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: calll memcmp
+; X86-NEXT: addl $16, %esp
+; X86-NEXT: retl
+;
+; X64-LABEL: length12:
+; X64: # %bb.0:
+; X64-NEXT: movq (%rdi), %rcx
+; X64-NEXT: movq (%rsi), %rdx
+; X64-NEXT: bswapq %rcx
+; X64-NEXT: bswapq %rdx
+; X64-NEXT: cmpq %rdx, %rcx
+; X64-NEXT: jne .LBB15_2
+; X64-NEXT: # %bb.1: # %loadbb1
+; X64-NEXT: movl 8(%rdi), %ecx
+; X64-NEXT: movl 8(%rsi), %edx
+; X64-NEXT: bswapl %ecx
+; X64-NEXT: bswapl %edx
+; X64-NEXT: xorl %eax, %eax
+; X64-NEXT: cmpq %rdx, %rcx
+; X64-NEXT: je .LBB15_3
+; X64-NEXT: .LBB15_2: # %res_block
+; X64-NEXT: xorl %eax, %eax
+; X64-NEXT: cmpq %rdx, %rcx
+; X64-NEXT: setae %al
+; X64-NEXT: leal -1(%rax,%rax), %eax
+; X64-NEXT: .LBB15_3: # %endblock
+; X64-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 12) nounwind
+ ret i32 %m
+}
+
+; PR33329 - https://bugs.llvm.org/show_bug.cgi?id=33329
+
+define i32 @length16(i8* %X, i8* %Y) nounwind optsize {
+; X86-LABEL: length16:
+; X86: # %bb.0:
+; X86-NEXT: pushl $0
+; X86-NEXT: pushl $16
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: calll memcmp
+; X86-NEXT: addl $16, %esp
+; X86-NEXT: retl
+;
+; X64-LABEL: length16:
+; X64: # %bb.0:
+; X64-NEXT: movq (%rdi), %rcx
+; X64-NEXT: movq (%rsi), %rdx
+; X64-NEXT: bswapq %rcx
+; X64-NEXT: bswapq %rdx
+; X64-NEXT: cmpq %rdx, %rcx
+; X64-NEXT: jne .LBB16_2
+; X64-NEXT: # %bb.1: # %loadbb1
+; X64-NEXT: movq 8(%rdi), %rcx
+; X64-NEXT: movq 8(%rsi), %rdx
+; X64-NEXT: bswapq %rcx
+; X64-NEXT: bswapq %rdx
+; X64-NEXT: xorl %eax, %eax
+; X64-NEXT: cmpq %rdx, %rcx
+; X64-NEXT: je .LBB16_3
+; X64-NEXT: .LBB16_2: # %res_block
+; X64-NEXT: xorl %eax, %eax
+; X64-NEXT: cmpq %rdx, %rcx
+; X64-NEXT: setae %al
+; X64-NEXT: leal -1(%rax,%rax), %eax
+; X64-NEXT: .LBB16_3: # %endblock
+; X64-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 16) nounwind
+ ret i32 %m
+}
+
+define i1 @length16_eq(i8* %x, i8* %y) nounwind optsize {
+; X86-NOSSE-LABEL: length16_eq:
+; X86-NOSSE: # %bb.0:
+; X86-NOSSE-NEXT: pushl $0
+; X86-NOSSE-NEXT: pushl $16
+; X86-NOSSE-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NOSSE-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NOSSE-NEXT: calll memcmp
+; X86-NOSSE-NEXT: addl $16, %esp
+; X86-NOSSE-NEXT: testl %eax, %eax
+; X86-NOSSE-NEXT: setne %al
+; X86-NOSSE-NEXT: retl
+;
+; X86-SSE2-LABEL: length16_eq:
+; X86-SSE2: # %bb.0:
+; X86-SSE2-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X86-SSE2-NEXT: movl {{[0-9]+}}(%esp), %ecx
+; X86-SSE2-NEXT: movdqu (%ecx), %xmm0
+; X86-SSE2-NEXT: movdqu (%eax), %xmm1
+; X86-SSE2-NEXT: pcmpeqb %xmm0, %xmm1
+; X86-SSE2-NEXT: pmovmskb %xmm1, %eax
+; X86-SSE2-NEXT: cmpl $65535, %eax # imm = 0xFFFF
+; X86-SSE2-NEXT: setne %al
+; X86-SSE2-NEXT: retl
+;
+; X64-SSE2-LABEL: length16_eq:
+; X64-SSE2: # %bb.0:
+; X64-SSE2-NEXT: movdqu (%rdi), %xmm0
+; X64-SSE2-NEXT: movdqu (%rsi), %xmm1
+; X64-SSE2-NEXT: pcmpeqb %xmm0, %xmm1
+; X64-SSE2-NEXT: pmovmskb %xmm1, %eax
+; X64-SSE2-NEXT: cmpl $65535, %eax # imm = 0xFFFF
+; X64-SSE2-NEXT: setne %al
+; X64-SSE2-NEXT: retq
+;
+; X64-AVX2-LABEL: length16_eq:
+; X64-AVX2: # %bb.0:
+; X64-AVX2-NEXT: vmovdqu (%rdi), %xmm0
+; X64-AVX2-NEXT: vpcmpeqb (%rsi), %xmm0, %xmm0
+; X64-AVX2-NEXT: vpmovmskb %xmm0, %eax
+; X64-AVX2-NEXT: cmpl $65535, %eax # imm = 0xFFFF
+; X64-AVX2-NEXT: setne %al
+; X64-AVX2-NEXT: retq
+ %call = tail call i32 @memcmp(i8* %x, i8* %y, i64 16) nounwind
+ %cmp = icmp ne i32 %call, 0
+ ret i1 %cmp
+}
+
+define i1 @length16_eq_const(i8* %X) nounwind optsize {
+; X86-NOSSE-LABEL: length16_eq_const:
+; X86-NOSSE: # %bb.0:
+; X86-NOSSE-NEXT: pushl $0
+; X86-NOSSE-NEXT: pushl $16
+; X86-NOSSE-NEXT: pushl $.L.str
+; X86-NOSSE-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NOSSE-NEXT: calll memcmp
+; X86-NOSSE-NEXT: addl $16, %esp
+; X86-NOSSE-NEXT: testl %eax, %eax
+; X86-NOSSE-NEXT: sete %al
+; X86-NOSSE-NEXT: retl
+;
+; X86-SSE2-LABEL: length16_eq_const:
+; X86-SSE2: # %bb.0:
+; X86-SSE2-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X86-SSE2-NEXT: movdqu (%eax), %xmm0
+; X86-SSE2-NEXT: pcmpeqb {{\.LCPI.*}}, %xmm0
+; X86-SSE2-NEXT: pmovmskb %xmm0, %eax
+; X86-SSE2-NEXT: cmpl $65535, %eax # imm = 0xFFFF
+; X86-SSE2-NEXT: sete %al
+; X86-SSE2-NEXT: retl
+;
+; X64-SSE2-LABEL: length16_eq_const:
+; X64-SSE2: # %bb.0:
+; X64-SSE2-NEXT: movdqu (%rdi), %xmm0
+; X64-SSE2-NEXT: pcmpeqb {{.*}}(%rip), %xmm0
+; X64-SSE2-NEXT: pmovmskb %xmm0, %eax
+; X64-SSE2-NEXT: cmpl $65535, %eax # imm = 0xFFFF
+; X64-SSE2-NEXT: sete %al
+; X64-SSE2-NEXT: retq
+;
+; X64-AVX2-LABEL: length16_eq_const:
+; X64-AVX2: # %bb.0:
+; X64-AVX2-NEXT: vmovdqu (%rdi), %xmm0
+; X64-AVX2-NEXT: vpcmpeqb {{.*}}(%rip), %xmm0, %xmm0
+; X64-AVX2-NEXT: vpmovmskb %xmm0, %eax
+; X64-AVX2-NEXT: cmpl $65535, %eax # imm = 0xFFFF
+; X64-AVX2-NEXT: sete %al
+; X64-AVX2-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* getelementptr inbounds ([65 x i8], [65 x i8]* @.str, i32 0, i32 0), i64 16) nounwind
+ %c = icmp eq i32 %m, 0
+ ret i1 %c
+}
+
+; PR33914 - https://bugs.llvm.org/show_bug.cgi?id=33914
+
+define i32 @length24(i8* %X, i8* %Y) nounwind optsize {
+; X86-LABEL: length24:
+; X86: # %bb.0:
+; X86-NEXT: pushl $0
+; X86-NEXT: pushl $24
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: calll memcmp
+; X86-NEXT: addl $16, %esp
+; X86-NEXT: retl
+;
+; X64-LABEL: length24:
+; X64: # %bb.0:
+; X64-NEXT: movl $24, %edx
+; X64-NEXT: jmp memcmp # TAILCALL
+ %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 24) nounwind
+ ret i32 %m
+}
+
+define i1 @length24_eq(i8* %x, i8* %y) nounwind optsize {
+; X86-NOSSE-LABEL: length24_eq:
+; X86-NOSSE: # %bb.0:
+; X86-NOSSE-NEXT: pushl $0
+; X86-NOSSE-NEXT: pushl $24
+; X86-NOSSE-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NOSSE-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NOSSE-NEXT: calll memcmp
+; X86-NOSSE-NEXT: addl $16, %esp
+; X86-NOSSE-NEXT: testl %eax, %eax
+; X86-NOSSE-NEXT: sete %al
+; X86-NOSSE-NEXT: retl
+;
+; X86-SSE2-LABEL: length24_eq:
+; X86-SSE2: # %bb.0:
+; X86-SSE2-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X86-SSE2-NEXT: movl {{[0-9]+}}(%esp), %ecx
+; X86-SSE2-NEXT: movdqu (%ecx), %xmm0
+; X86-SSE2-NEXT: movdqu 8(%ecx), %xmm1
+; X86-SSE2-NEXT: movdqu (%eax), %xmm2
+; X86-SSE2-NEXT: pcmpeqb %xmm0, %xmm2
+; X86-SSE2-NEXT: movdqu 8(%eax), %xmm0
+; X86-SSE2-NEXT: pcmpeqb %xmm1, %xmm0
+; X86-SSE2-NEXT: pand %xmm2, %xmm0
+; X86-SSE2-NEXT: pmovmskb %xmm0, %eax
+; X86-SSE2-NEXT: cmpl $65535, %eax # imm = 0xFFFF
+; X86-SSE2-NEXT: sete %al
+; X86-SSE2-NEXT: retl
+;
+; X64-SSE2-LABEL: length24_eq:
+; X64-SSE2: # %bb.0:
+; X64-SSE2-NEXT: movdqu (%rdi), %xmm0
+; X64-SSE2-NEXT: movdqu (%rsi), %xmm1
+; X64-SSE2-NEXT: pcmpeqb %xmm0, %xmm1
+; X64-SSE2-NEXT: movq {{.*#+}} xmm0 = mem[0],zero
+; X64-SSE2-NEXT: movq {{.*#+}} xmm2 = mem[0],zero
+; X64-SSE2-NEXT: pcmpeqb %xmm0, %xmm2
+; X64-SSE2-NEXT: pand %xmm1, %xmm2
+; X64-SSE2-NEXT: pmovmskb %xmm2, %eax
+; X64-SSE2-NEXT: cmpl $65535, %eax # imm = 0xFFFF
+; X64-SSE2-NEXT: sete %al
+; X64-SSE2-NEXT: retq
+;
+; X64-AVX2-LABEL: length24_eq:
+; X64-AVX2: # %bb.0:
+; X64-AVX2-NEXT: vmovdqu (%rdi), %xmm0
+; X64-AVX2-NEXT: vmovq {{.*#+}} xmm1 = mem[0],zero
+; X64-AVX2-NEXT: vmovq {{.*#+}} xmm2 = mem[0],zero
+; X64-AVX2-NEXT: vpcmpeqb %xmm2, %xmm1, %xmm1
+; X64-AVX2-NEXT: vpcmpeqb (%rsi), %xmm0, %xmm0
+; X64-AVX2-NEXT: vpand %xmm1, %xmm0, %xmm0
+; X64-AVX2-NEXT: vpmovmskb %xmm0, %eax
+; X64-AVX2-NEXT: cmpl $65535, %eax # imm = 0xFFFF
+; X64-AVX2-NEXT: sete %al
+; X64-AVX2-NEXT: retq
+ %call = tail call i32 @memcmp(i8* %x, i8* %y, i64 24) nounwind
+ %cmp = icmp eq i32 %call, 0
+ ret i1 %cmp
+}
+
+define i1 @length24_eq_const(i8* %X) nounwind optsize {
+; X86-NOSSE-LABEL: length24_eq_const:
+; X86-NOSSE: # %bb.0:
+; X86-NOSSE-NEXT: pushl $0
+; X86-NOSSE-NEXT: pushl $24
+; X86-NOSSE-NEXT: pushl $.L.str
+; X86-NOSSE-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NOSSE-NEXT: calll memcmp
+; X86-NOSSE-NEXT: addl $16, %esp
+; X86-NOSSE-NEXT: testl %eax, %eax
+; X86-NOSSE-NEXT: setne %al
+; X86-NOSSE-NEXT: retl
+;
+; X86-SSE2-LABEL: length24_eq_const:
+; X86-SSE2: # %bb.0:
+; X86-SSE2-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X86-SSE2-NEXT: movdqu (%eax), %xmm0
+; X86-SSE2-NEXT: movdqu 8(%eax), %xmm1
+; X86-SSE2-NEXT: pcmpeqb {{\.LCPI.*}}, %xmm1
+; X86-SSE2-NEXT: pcmpeqb {{\.LCPI.*}}, %xmm0
+; X86-SSE2-NEXT: pand %xmm1, %xmm0
+; X86-SSE2-NEXT: pmovmskb %xmm0, %eax
+; X86-SSE2-NEXT: cmpl $65535, %eax # imm = 0xFFFF
+; X86-SSE2-NEXT: setne %al
+; X86-SSE2-NEXT: retl
+;
+; X64-SSE2-LABEL: length24_eq_const:
+; X64-SSE2: # %bb.0:
+; X64-SSE2-NEXT: movdqu (%rdi), %xmm0
+; X64-SSE2-NEXT: movq {{.*#+}} xmm1 = mem[0],zero
+; X64-SSE2-NEXT: pcmpeqb {{.*}}(%rip), %xmm1
+; X64-SSE2-NEXT: pcmpeqb {{.*}}(%rip), %xmm0
+; X64-SSE2-NEXT: pand %xmm1, %xmm0
+; X64-SSE2-NEXT: pmovmskb %xmm0, %eax
+; X64-SSE2-NEXT: cmpl $65535, %eax # imm = 0xFFFF
+; X64-SSE2-NEXT: setne %al
+; X64-SSE2-NEXT: retq
+;
+; X64-AVX2-LABEL: length24_eq_const:
+; X64-AVX2: # %bb.0:
+; X64-AVX2-NEXT: vmovdqu (%rdi), %xmm0
+; X64-AVX2-NEXT: vmovq {{.*#+}} xmm1 = mem[0],zero
+; X64-AVX2-NEXT: vpcmpeqb {{.*}}(%rip), %xmm1, %xmm1
+; X64-AVX2-NEXT: vpcmpeqb {{.*}}(%rip), %xmm0, %xmm0
+; X64-AVX2-NEXT: vpand %xmm1, %xmm0, %xmm0
+; X64-AVX2-NEXT: vpmovmskb %xmm0, %eax
+; X64-AVX2-NEXT: cmpl $65535, %eax # imm = 0xFFFF
+; X64-AVX2-NEXT: setne %al
+; X64-AVX2-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* getelementptr inbounds ([65 x i8], [65 x i8]* @.str, i32 0, i32 0), i64 24) nounwind
+ %c = icmp ne i32 %m, 0
+ ret i1 %c
+}
+
+define i32 @length32(i8* %X, i8* %Y) nounwind optsize {
+; X86-LABEL: length32:
+; X86: # %bb.0:
+; X86-NEXT: pushl $0
+; X86-NEXT: pushl $32
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: calll memcmp
+; X86-NEXT: addl $16, %esp
+; X86-NEXT: retl
+;
+; X64-LABEL: length32:
+; X64: # %bb.0:
+; X64-NEXT: movl $32, %edx
+; X64-NEXT: jmp memcmp # TAILCALL
+ %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 32) nounwind
+ ret i32 %m
+}
+
+; PR33325 - https://bugs.llvm.org/show_bug.cgi?id=33325
+
+define i1 @length32_eq(i8* %x, i8* %y) nounwind optsize {
+; X86-NOSSE-LABEL: length32_eq:
+; X86-NOSSE: # %bb.0:
+; X86-NOSSE-NEXT: pushl $0
+; X86-NOSSE-NEXT: pushl $32
+; X86-NOSSE-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NOSSE-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NOSSE-NEXT: calll memcmp
+; X86-NOSSE-NEXT: addl $16, %esp
+; X86-NOSSE-NEXT: testl %eax, %eax
+; X86-NOSSE-NEXT: sete %al
+; X86-NOSSE-NEXT: retl
+;
+; X86-SSE2-LABEL: length32_eq:
+; X86-SSE2: # %bb.0:
+; X86-SSE2-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X86-SSE2-NEXT: movl {{[0-9]+}}(%esp), %ecx
+; X86-SSE2-NEXT: movdqu (%ecx), %xmm0
+; X86-SSE2-NEXT: movdqu 16(%ecx), %xmm1
+; X86-SSE2-NEXT: movdqu (%eax), %xmm2
+; X86-SSE2-NEXT: pcmpeqb %xmm0, %xmm2
+; X86-SSE2-NEXT: movdqu 16(%eax), %xmm0
+; X86-SSE2-NEXT: pcmpeqb %xmm1, %xmm0
+; X86-SSE2-NEXT: pand %xmm2, %xmm0
+; X86-SSE2-NEXT: pmovmskb %xmm0, %eax
+; X86-SSE2-NEXT: cmpl $65535, %eax # imm = 0xFFFF
+; X86-SSE2-NEXT: sete %al
+; X86-SSE2-NEXT: retl
+;
+; X64-SSE2-LABEL: length32_eq:
+; X64-SSE2: # %bb.0:
+; X64-SSE2-NEXT: movdqu (%rdi), %xmm0
+; X64-SSE2-NEXT: movdqu 16(%rdi), %xmm1
+; X64-SSE2-NEXT: movdqu (%rsi), %xmm2
+; X64-SSE2-NEXT: pcmpeqb %xmm0, %xmm2
+; X64-SSE2-NEXT: movdqu 16(%rsi), %xmm0
+; X64-SSE2-NEXT: pcmpeqb %xmm1, %xmm0
+; X64-SSE2-NEXT: pand %xmm2, %xmm0
+; X64-SSE2-NEXT: pmovmskb %xmm0, %eax
+; X64-SSE2-NEXT: cmpl $65535, %eax # imm = 0xFFFF
+; X64-SSE2-NEXT: sete %al
+; X64-SSE2-NEXT: retq
+;
+; X64-AVX2-LABEL: length32_eq:
+; X64-AVX2: # %bb.0:
+; X64-AVX2-NEXT: vmovdqu (%rdi), %ymm0
+; X64-AVX2-NEXT: vpcmpeqb (%rsi), %ymm0, %ymm0
+; X64-AVX2-NEXT: vpmovmskb %ymm0, %eax
+; X64-AVX2-NEXT: cmpl $-1, %eax
+; X64-AVX2-NEXT: sete %al
+; X64-AVX2-NEXT: vzeroupper
+; X64-AVX2-NEXT: retq
+ %call = tail call i32 @memcmp(i8* %x, i8* %y, i64 32) nounwind
+ %cmp = icmp eq i32 %call, 0
+ ret i1 %cmp
+}
+
+define i1 @length32_eq_const(i8* %X) nounwind optsize {
+; X86-NOSSE-LABEL: length32_eq_const:
+; X86-NOSSE: # %bb.0:
+; X86-NOSSE-NEXT: pushl $0
+; X86-NOSSE-NEXT: pushl $32
+; X86-NOSSE-NEXT: pushl $.L.str
+; X86-NOSSE-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NOSSE-NEXT: calll memcmp
+; X86-NOSSE-NEXT: addl $16, %esp
+; X86-NOSSE-NEXT: testl %eax, %eax
+; X86-NOSSE-NEXT: setne %al
+; X86-NOSSE-NEXT: retl
+;
+; X86-SSE2-LABEL: length32_eq_const:
+; X86-SSE2: # %bb.0:
+; X86-SSE2-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X86-SSE2-NEXT: movdqu (%eax), %xmm0
+; X86-SSE2-NEXT: movdqu 16(%eax), %xmm1
+; X86-SSE2-NEXT: pcmpeqb {{\.LCPI.*}}, %xmm1
+; X86-SSE2-NEXT: pcmpeqb {{\.LCPI.*}}, %xmm0
+; X86-SSE2-NEXT: pand %xmm1, %xmm0
+; X86-SSE2-NEXT: pmovmskb %xmm0, %eax
+; X86-SSE2-NEXT: cmpl $65535, %eax # imm = 0xFFFF
+; X86-SSE2-NEXT: setne %al
+; X86-SSE2-NEXT: retl
+;
+; X64-SSE2-LABEL: length32_eq_const:
+; X64-SSE2: # %bb.0:
+; X64-SSE2-NEXT: movdqu (%rdi), %xmm0
+; X64-SSE2-NEXT: movdqu 16(%rdi), %xmm1
+; X64-SSE2-NEXT: pcmpeqb {{.*}}(%rip), %xmm1
+; X64-SSE2-NEXT: pcmpeqb {{.*}}(%rip), %xmm0
+; X64-SSE2-NEXT: pand %xmm1, %xmm0
+; X64-SSE2-NEXT: pmovmskb %xmm0, %eax
+; X64-SSE2-NEXT: cmpl $65535, %eax # imm = 0xFFFF
+; X64-SSE2-NEXT: setne %al
+; X64-SSE2-NEXT: retq
+;
+; X64-AVX2-LABEL: length32_eq_const:
+; X64-AVX2: # %bb.0:
+; X64-AVX2-NEXT: vmovdqu (%rdi), %ymm0
+; X64-AVX2-NEXT: vpcmpeqb {{.*}}(%rip), %ymm0, %ymm0
+; X64-AVX2-NEXT: vpmovmskb %ymm0, %eax
+; X64-AVX2-NEXT: cmpl $-1, %eax
+; X64-AVX2-NEXT: setne %al
+; X64-AVX2-NEXT: vzeroupper
+; X64-AVX2-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* getelementptr inbounds ([65 x i8], [65 x i8]* @.str, i32 0, i32 0), i64 32) nounwind
+ %c = icmp ne i32 %m, 0
+ ret i1 %c
+}
+
+define i32 @length64(i8* %X, i8* %Y) nounwind optsize {
+; X86-LABEL: length64:
+; X86: # %bb.0:
+; X86-NEXT: pushl $0
+; X86-NEXT: pushl $64
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: calll memcmp
+; X86-NEXT: addl $16, %esp
+; X86-NEXT: retl
+;
+; X64-LABEL: length64:
+; X64: # %bb.0:
+; X64-NEXT: movl $64, %edx
+; X64-NEXT: jmp memcmp # TAILCALL
+ %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 64) nounwind
+ ret i32 %m
+}
+
+define i1 @length64_eq(i8* %x, i8* %y) nounwind optsize {
+; X86-LABEL: length64_eq:
+; X86: # %bb.0:
+; X86-NEXT: pushl $0
+; X86-NEXT: pushl $64
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: calll memcmp
+; X86-NEXT: addl $16, %esp
+; X86-NEXT: testl %eax, %eax
+; X86-NEXT: setne %al
+; X86-NEXT: retl
+;
+; X64-SSE2-LABEL: length64_eq:
+; X64-SSE2: # %bb.0:
+; X64-SSE2-NEXT: pushq %rax
+; X64-SSE2-NEXT: movl $64, %edx
+; X64-SSE2-NEXT: callq memcmp
+; X64-SSE2-NEXT: testl %eax, %eax
+; X64-SSE2-NEXT: setne %al
+; X64-SSE2-NEXT: popq %rcx
+; X64-SSE2-NEXT: retq
+;
+; X64-AVX2-LABEL: length64_eq:
+; X64-AVX2: # %bb.0:
+; X64-AVX2-NEXT: vmovdqu (%rdi), %ymm0
+; X64-AVX2-NEXT: vmovdqu 32(%rdi), %ymm1
+; X64-AVX2-NEXT: vpcmpeqb 32(%rsi), %ymm1, %ymm1
+; X64-AVX2-NEXT: vpcmpeqb (%rsi), %ymm0, %ymm0
+; X64-AVX2-NEXT: vpand %ymm1, %ymm0, %ymm0
+; X64-AVX2-NEXT: vpmovmskb %ymm0, %eax
+; X64-AVX2-NEXT: cmpl $-1, %eax
+; X64-AVX2-NEXT: setne %al
+; X64-AVX2-NEXT: vzeroupper
+; X64-AVX2-NEXT: retq
+ %call = tail call i32 @memcmp(i8* %x, i8* %y, i64 64) nounwind
+ %cmp = icmp ne i32 %call, 0
+ ret i1 %cmp
+}
+
+define i1 @length64_eq_const(i8* %X) nounwind optsize {
+; X86-LABEL: length64_eq_const:
+; X86: # %bb.0:
+; X86-NEXT: pushl $0
+; X86-NEXT: pushl $64
+; X86-NEXT: pushl $.L.str
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: calll memcmp
+; X86-NEXT: addl $16, %esp
+; X86-NEXT: testl %eax, %eax
+; X86-NEXT: sete %al
+; X86-NEXT: retl
+;
+; X64-SSE2-LABEL: length64_eq_const:
+; X64-SSE2: # %bb.0:
+; X64-SSE2-NEXT: pushq %rax
+; X64-SSE2-NEXT: movl $.L.str, %esi
+; X64-SSE2-NEXT: movl $64, %edx
+; X64-SSE2-NEXT: callq memcmp
+; X64-SSE2-NEXT: testl %eax, %eax
+; X64-SSE2-NEXT: sete %al
+; X64-SSE2-NEXT: popq %rcx
+; X64-SSE2-NEXT: retq
+;
+; X64-AVX2-LABEL: length64_eq_const:
+; X64-AVX2: # %bb.0:
+; X64-AVX2-NEXT: vmovdqu (%rdi), %ymm0
+; X64-AVX2-NEXT: vmovdqu 32(%rdi), %ymm1
+; X64-AVX2-NEXT: vpcmpeqb {{.*}}(%rip), %ymm1, %ymm1
+; X64-AVX2-NEXT: vpcmpeqb {{.*}}(%rip), %ymm0, %ymm0
+; X64-AVX2-NEXT: vpand %ymm1, %ymm0, %ymm0
+; X64-AVX2-NEXT: vpmovmskb %ymm0, %eax
+; X64-AVX2-NEXT: cmpl $-1, %eax
+; X64-AVX2-NEXT: sete %al
+; X64-AVX2-NEXT: vzeroupper
+; X64-AVX2-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* getelementptr inbounds ([65 x i8], [65 x i8]* @.str, i32 0, i32 0), i64 64) nounwind
+ %c = icmp eq i32 %m, 0
+ ret i1 %c
+}
+
+define i32 @bcmp_length2(i8* %X, i8* %Y) nounwind optsize {
+; X86-LABEL: bcmp_length2:
+; X86: # %bb.0:
+; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT: movl {{[0-9]+}}(%esp), %ecx
+; X86-NEXT: movzwl (%ecx), %ecx
+; X86-NEXT: movzwl (%eax), %edx
+; X86-NEXT: rolw $8, %cx
+; X86-NEXT: rolw $8, %dx
+; X86-NEXT: movzwl %cx, %eax
+; X86-NEXT: movzwl %dx, %ecx
+; X86-NEXT: subl %ecx, %eax
+; X86-NEXT: retl
+;
+; X64-LABEL: bcmp_length2:
+; X64: # %bb.0:
+; X64-NEXT: movzwl (%rdi), %eax
+; X64-NEXT: movzwl (%rsi), %ecx
+; X64-NEXT: rolw $8, %ax
+; X64-NEXT: rolw $8, %cx
+; X64-NEXT: movzwl %ax, %eax
+; X64-NEXT: movzwl %cx, %ecx
+; X64-NEXT: subl %ecx, %eax
+; X64-NEXT: retq
+ %m = tail call i32 @bcmp(i8* %X, i8* %Y, i64 2) nounwind
+ ret i32 %m
+}
+
--- /dev/null
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc < %s -mtriple=i686-unknown-unknown -mattr=cmov | FileCheck %s --check-prefix=X86 --check-prefix=X86-NOSSE
+; RUN: llc < %s -mtriple=i686-unknown-unknown -mattr=+sse | FileCheck %s --check-prefix=X86 --check-prefix=SSE --check-prefix=X86-SSE1
+; RUN: llc < %s -mtriple=i686-unknown-unknown -mattr=+sse2 | FileCheck %s --check-prefix=X86 --check-prefix=SSE --check-prefix=X86-SSE2
+; RUN: llc < %s -mtriple=x86_64-unknown-unknown | FileCheck %s --check-prefix=X64 --check-prefix=X64-SSE2
+; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=avx | FileCheck %s --check-prefix=X64 --check-prefix=X64-AVX --check-prefix=X64-AVX1
+; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=avx2 | FileCheck %s --check-prefix=X64 --check-prefix=X64-AVX --check-prefix=X64-AVX2
+
+; This tests codegen time inlining/optimization of memcmp
+; rdar://6480398
+
+@.str = private constant [65 x i8] c"0123456789012345678901234567890123456789012345678901234567890123\00", align 1
+
+declare i32 @memcmp(i8*, i8*, i64)
+
+define i32 @length0(i8* %X, i8* %Y) nounwind {
+; X86-LABEL: length0:
+; X86: # %bb.0:
+; X86-NEXT: xorl %eax, %eax
+; X86-NEXT: retl
+;
+; X64-LABEL: length0:
+; X64: # %bb.0:
+; X64-NEXT: xorl %eax, %eax
+; X64-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 0) nounwind
+ ret i32 %m
+ }
+
+define i1 @length0_eq(i8* %X, i8* %Y) nounwind {
+; X86-LABEL: length0_eq:
+; X86: # %bb.0:
+; X86-NEXT: movb $1, %al
+; X86-NEXT: retl
+;
+; X64-LABEL: length0_eq:
+; X64: # %bb.0:
+; X64-NEXT: movb $1, %al
+; X64-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 0) nounwind
+ %c = icmp eq i32 %m, 0
+ ret i1 %c
+}
+
+define i1 @length0_lt(i8* %X, i8* %Y) nounwind {
+; X86-LABEL: length0_lt:
+; X86: # %bb.0:
+; X86-NEXT: xorl %eax, %eax
+; X86-NEXT: retl
+;
+; X64-LABEL: length0_lt:
+; X64: # %bb.0:
+; X64-NEXT: xorl %eax, %eax
+; X64-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 0) nounwind
+ %c = icmp slt i32 %m, 0
+ ret i1 %c
+}
+
+define i32 @length2(i8* %X, i8* %Y) nounwind {
+; X86-LABEL: length2:
+; X86: # %bb.0:
+; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT: movl {{[0-9]+}}(%esp), %ecx
+; X86-NEXT: movzwl (%ecx), %ecx
+; X86-NEXT: movzwl (%eax), %edx
+; X86-NEXT: rolw $8, %cx
+; X86-NEXT: rolw $8, %dx
+; X86-NEXT: movzwl %cx, %eax
+; X86-NEXT: movzwl %dx, %ecx
+; X86-NEXT: subl %ecx, %eax
+; X86-NEXT: retl
+;
+; X64-LABEL: length2:
+; X64: # %bb.0:
+; X64-NEXT: movzwl (%rdi), %eax
+; X64-NEXT: movzwl (%rsi), %ecx
+; X64-NEXT: rolw $8, %ax
+; X64-NEXT: rolw $8, %cx
+; X64-NEXT: movzwl %ax, %eax
+; X64-NEXT: movzwl %cx, %ecx
+; X64-NEXT: subl %ecx, %eax
+; X64-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 2) nounwind
+ ret i32 %m
+}
+
+define i1 @length2_eq(i8* %X, i8* %Y) nounwind {
+; X86-LABEL: length2_eq:
+; X86: # %bb.0:
+; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT: movl {{[0-9]+}}(%esp), %ecx
+; X86-NEXT: movzwl (%ecx), %ecx
+; X86-NEXT: cmpw (%eax), %cx
+; X86-NEXT: sete %al
+; X86-NEXT: retl
+;
+; X64-LABEL: length2_eq:
+; X64: # %bb.0:
+; X64-NEXT: movzwl (%rdi), %eax
+; X64-NEXT: cmpw (%rsi), %ax
+; X64-NEXT: sete %al
+; X64-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 2) nounwind
+ %c = icmp eq i32 %m, 0
+ ret i1 %c
+}
+
+define i1 @length2_lt(i8* %X, i8* %Y) nounwind {
+; X86-LABEL: length2_lt:
+; X86: # %bb.0:
+; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT: movl {{[0-9]+}}(%esp), %ecx
+; X86-NEXT: movzwl (%ecx), %ecx
+; X86-NEXT: movzwl (%eax), %edx
+; X86-NEXT: rolw $8, %cx
+; X86-NEXT: rolw $8, %dx
+; X86-NEXT: movzwl %cx, %eax
+; X86-NEXT: movzwl %dx, %ecx
+; X86-NEXT: subl %ecx, %eax
+; X86-NEXT: shrl $31, %eax
+; X86-NEXT: # kill: def $al killed $al killed $eax
+; X86-NEXT: retl
+;
+; X64-LABEL: length2_lt:
+; X64: # %bb.0:
+; X64-NEXT: movzwl (%rdi), %eax
+; X64-NEXT: movzwl (%rsi), %ecx
+; X64-NEXT: rolw $8, %ax
+; X64-NEXT: rolw $8, %cx
+; X64-NEXT: movzwl %ax, %eax
+; X64-NEXT: movzwl %cx, %ecx
+; X64-NEXT: subl %ecx, %eax
+; X64-NEXT: shrl $31, %eax
+; X64-NEXT: # kill: def $al killed $al killed $eax
+; X64-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 2) nounwind
+ %c = icmp slt i32 %m, 0
+ ret i1 %c
+}
+
+define i1 @length2_gt(i8* %X, i8* %Y) nounwind {
+; X86-LABEL: length2_gt:
+; X86: # %bb.0:
+; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT: movl {{[0-9]+}}(%esp), %ecx
+; X86-NEXT: movzwl (%ecx), %ecx
+; X86-NEXT: movzwl (%eax), %eax
+; X86-NEXT: rolw $8, %cx
+; X86-NEXT: rolw $8, %ax
+; X86-NEXT: movzwl %cx, %ecx
+; X86-NEXT: movzwl %ax, %eax
+; X86-NEXT: subl %eax, %ecx
+; X86-NEXT: testl %ecx, %ecx
+; X86-NEXT: setg %al
+; X86-NEXT: retl
+;
+; X64-LABEL: length2_gt:
+; X64: # %bb.0:
+; X64-NEXT: movzwl (%rdi), %eax
+; X64-NEXT: movzwl (%rsi), %ecx
+; X64-NEXT: rolw $8, %ax
+; X64-NEXT: rolw $8, %cx
+; X64-NEXT: movzwl %ax, %eax
+; X64-NEXT: movzwl %cx, %ecx
+; X64-NEXT: subl %ecx, %eax
+; X64-NEXT: testl %eax, %eax
+; X64-NEXT: setg %al
+; X64-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 2) nounwind
+ %c = icmp sgt i32 %m, 0
+ ret i1 %c
+}
+
+define i1 @length2_eq_const(i8* %X) nounwind {
+; X86-LABEL: length2_eq_const:
+; X86: # %bb.0:
+; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT: movzwl (%eax), %eax
+; X86-NEXT: cmpl $12849, %eax # imm = 0x3231
+; X86-NEXT: setne %al
+; X86-NEXT: retl
+;
+; X64-LABEL: length2_eq_const:
+; X64: # %bb.0:
+; X64-NEXT: movzwl (%rdi), %eax
+; X64-NEXT: cmpl $12849, %eax # imm = 0x3231
+; X64-NEXT: setne %al
+; X64-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* getelementptr inbounds ([65 x i8], [65 x i8]* @.str, i32 0, i32 1), i64 2) nounwind
+ %c = icmp ne i32 %m, 0
+ ret i1 %c
+}
+
+define i1 @length2_eq_nobuiltin_attr(i8* %X, i8* %Y) nounwind {
+; X86-LABEL: length2_eq_nobuiltin_attr:
+; X86: # %bb.0:
+; X86-NEXT: pushl $0
+; X86-NEXT: pushl $2
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: calll memcmp
+; X86-NEXT: addl $16, %esp
+; X86-NEXT: testl %eax, %eax
+; X86-NEXT: sete %al
+; X86-NEXT: retl
+;
+; X64-LABEL: length2_eq_nobuiltin_attr:
+; X64: # %bb.0:
+; X64-NEXT: pushq %rax
+; X64-NEXT: movl $2, %edx
+; X64-NEXT: callq memcmp
+; X64-NEXT: testl %eax, %eax
+; X64-NEXT: sete %al
+; X64-NEXT: popq %rcx
+; X64-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 2) nounwind nobuiltin
+ %c = icmp eq i32 %m, 0
+ ret i1 %c
+}
+
+define i32 @length3(i8* %X, i8* %Y) nounwind {
+; X86-LABEL: length3:
+; X86: # %bb.0: # %loadbb
+; X86-NEXT: pushl %esi
+; X86-NEXT: movl {{[0-9]+}}(%esp), %ecx
+; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT: movzwl (%eax), %edx
+; X86-NEXT: movzwl (%ecx), %esi
+; X86-NEXT: rolw $8, %dx
+; X86-NEXT: rolw $8, %si
+; X86-NEXT: cmpw %si, %dx
+; X86-NEXT: jne .LBB9_1
+; X86-NEXT: # %bb.2: # %loadbb1
+; X86-NEXT: movzbl 2(%eax), %eax
+; X86-NEXT: movzbl 2(%ecx), %ecx
+; X86-NEXT: subl %ecx, %eax
+; X86-NEXT: popl %esi
+; X86-NEXT: retl
+; X86-NEXT: .LBB9_1: # %res_block
+; X86-NEXT: setae %al
+; X86-NEXT: movzbl %al, %eax
+; X86-NEXT: leal -1(%eax,%eax), %eax
+; X86-NEXT: popl %esi
+; X86-NEXT: retl
+;
+; X64-LABEL: length3:
+; X64: # %bb.0: # %loadbb
+; X64-NEXT: movzwl (%rdi), %eax
+; X64-NEXT: movzwl (%rsi), %ecx
+; X64-NEXT: rolw $8, %ax
+; X64-NEXT: rolw $8, %cx
+; X64-NEXT: cmpw %cx, %ax
+; X64-NEXT: jne .LBB9_1
+; X64-NEXT: # %bb.2: # %loadbb1
+; X64-NEXT: movzbl 2(%rdi), %eax
+; X64-NEXT: movzbl 2(%rsi), %ecx
+; X64-NEXT: subl %ecx, %eax
+; X64-NEXT: retq
+; X64-NEXT: .LBB9_1: # %res_block
+; X64-NEXT: setae %al
+; X64-NEXT: movzbl %al, %eax
+; X64-NEXT: leal -1(%rax,%rax), %eax
+; X64-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 3) nounwind
+ ret i32 %m
+}
+
+define i1 @length3_eq(i8* %X, i8* %Y) nounwind {
+; X86-LABEL: length3_eq:
+; X86: # %bb.0:
+; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT: movl {{[0-9]+}}(%esp), %ecx
+; X86-NEXT: movzwl (%ecx), %edx
+; X86-NEXT: xorw (%eax), %dx
+; X86-NEXT: movb 2(%ecx), %cl
+; X86-NEXT: xorb 2(%eax), %cl
+; X86-NEXT: movzbl %cl, %eax
+; X86-NEXT: orw %dx, %ax
+; X86-NEXT: setne %al
+; X86-NEXT: retl
+;
+; X64-LABEL: length3_eq:
+; X64: # %bb.0:
+; X64-NEXT: movzwl (%rdi), %eax
+; X64-NEXT: xorw (%rsi), %ax
+; X64-NEXT: movb 2(%rdi), %cl
+; X64-NEXT: xorb 2(%rsi), %cl
+; X64-NEXT: movzbl %cl, %ecx
+; X64-NEXT: orw %ax, %cx
+; X64-NEXT: setne %al
+; X64-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 3) nounwind
+ %c = icmp ne i32 %m, 0
+ ret i1 %c
+}
+
+define i32 @length4(i8* %X, i8* %Y) nounwind {
+; X86-LABEL: length4:
+; X86: # %bb.0:
+; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT: movl {{[0-9]+}}(%esp), %ecx
+; X86-NEXT: movl (%ecx), %ecx
+; X86-NEXT: movl (%eax), %edx
+; X86-NEXT: bswapl %ecx
+; X86-NEXT: bswapl %edx
+; X86-NEXT: xorl %eax, %eax
+; X86-NEXT: cmpl %edx, %ecx
+; X86-NEXT: seta %al
+; X86-NEXT: sbbl $0, %eax
+; X86-NEXT: retl
+;
+; X64-LABEL: length4:
+; X64: # %bb.0:
+; X64-NEXT: movl (%rdi), %ecx
+; X64-NEXT: movl (%rsi), %edx
+; X64-NEXT: bswapl %ecx
+; X64-NEXT: bswapl %edx
+; X64-NEXT: xorl %eax, %eax
+; X64-NEXT: cmpl %edx, %ecx
+; X64-NEXT: seta %al
+; X64-NEXT: sbbl $0, %eax
+; X64-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 4) nounwind
+ ret i32 %m
+}
+
+define i1 @length4_eq(i8* %X, i8* %Y) nounwind {
+; X86-LABEL: length4_eq:
+; X86: # %bb.0:
+; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT: movl {{[0-9]+}}(%esp), %ecx
+; X86-NEXT: movl (%ecx), %ecx
+; X86-NEXT: cmpl (%eax), %ecx
+; X86-NEXT: setne %al
+; X86-NEXT: retl
+;
+; X64-LABEL: length4_eq:
+; X64: # %bb.0:
+; X64-NEXT: movl (%rdi), %eax
+; X64-NEXT: cmpl (%rsi), %eax
+; X64-NEXT: setne %al
+; X64-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 4) nounwind
+ %c = icmp ne i32 %m, 0
+ ret i1 %c
+}
+
+define i1 @length4_lt(i8* %X, i8* %Y) nounwind {
+; X86-LABEL: length4_lt:
+; X86: # %bb.0:
+; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT: movl {{[0-9]+}}(%esp), %ecx
+; X86-NEXT: movl (%ecx), %ecx
+; X86-NEXT: movl (%eax), %edx
+; X86-NEXT: bswapl %ecx
+; X86-NEXT: bswapl %edx
+; X86-NEXT: xorl %eax, %eax
+; X86-NEXT: cmpl %edx, %ecx
+; X86-NEXT: seta %al
+; X86-NEXT: sbbl $0, %eax
+; X86-NEXT: shrl $31, %eax
+; X86-NEXT: # kill: def $al killed $al killed $eax
+; X86-NEXT: retl
+;
+; X64-LABEL: length4_lt:
+; X64: # %bb.0:
+; X64-NEXT: movl (%rdi), %ecx
+; X64-NEXT: movl (%rsi), %edx
+; X64-NEXT: bswapl %ecx
+; X64-NEXT: bswapl %edx
+; X64-NEXT: xorl %eax, %eax
+; X64-NEXT: cmpl %edx, %ecx
+; X64-NEXT: seta %al
+; X64-NEXT: sbbl $0, %eax
+; X64-NEXT: shrl $31, %eax
+; X64-NEXT: # kill: def $al killed $al killed $eax
+; X64-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 4) nounwind
+ %c = icmp slt i32 %m, 0
+ ret i1 %c
+}
+
+define i1 @length4_gt(i8* %X, i8* %Y) nounwind {
+; X86-LABEL: length4_gt:
+; X86: # %bb.0:
+; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT: movl {{[0-9]+}}(%esp), %ecx
+; X86-NEXT: movl (%ecx), %ecx
+; X86-NEXT: movl (%eax), %eax
+; X86-NEXT: bswapl %ecx
+; X86-NEXT: bswapl %eax
+; X86-NEXT: xorl %edx, %edx
+; X86-NEXT: cmpl %eax, %ecx
+; X86-NEXT: seta %dl
+; X86-NEXT: sbbl $0, %edx
+; X86-NEXT: testl %edx, %edx
+; X86-NEXT: setg %al
+; X86-NEXT: retl
+;
+; X64-LABEL: length4_gt:
+; X64: # %bb.0:
+; X64-NEXT: movl (%rdi), %eax
+; X64-NEXT: movl (%rsi), %ecx
+; X64-NEXT: bswapl %eax
+; X64-NEXT: bswapl %ecx
+; X64-NEXT: xorl %edx, %edx
+; X64-NEXT: cmpl %ecx, %eax
+; X64-NEXT: seta %dl
+; X64-NEXT: sbbl $0, %edx
+; X64-NEXT: testl %edx, %edx
+; X64-NEXT: setg %al
+; X64-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 4) nounwind
+ %c = icmp sgt i32 %m, 0
+ ret i1 %c
+}
+
+define i1 @length4_eq_const(i8* %X) nounwind {
+; X86-LABEL: length4_eq_const:
+; X86: # %bb.0:
+; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT: cmpl $875770417, (%eax) # imm = 0x34333231
+; X86-NEXT: sete %al
+; X86-NEXT: retl
+;
+; X64-LABEL: length4_eq_const:
+; X64: # %bb.0:
+; X64-NEXT: cmpl $875770417, (%rdi) # imm = 0x34333231
+; X64-NEXT: sete %al
+; X64-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* getelementptr inbounds ([65 x i8], [65 x i8]* @.str, i32 0, i32 1), i64 4) nounwind
+ %c = icmp eq i32 %m, 0
+ ret i1 %c
+}
+
+define i32 @length5(i8* %X, i8* %Y) nounwind {
+; X86-LABEL: length5:
+; X86: # %bb.0: # %loadbb
+; X86-NEXT: pushl %esi
+; X86-NEXT: movl {{[0-9]+}}(%esp), %ecx
+; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT: movl (%eax), %edx
+; X86-NEXT: movl (%ecx), %esi
+; X86-NEXT: bswapl %edx
+; X86-NEXT: bswapl %esi
+; X86-NEXT: cmpl %esi, %edx
+; X86-NEXT: jne .LBB16_1
+; X86-NEXT: # %bb.2: # %loadbb1
+; X86-NEXT: movzbl 4(%eax), %eax
+; X86-NEXT: movzbl 4(%ecx), %ecx
+; X86-NEXT: subl %ecx, %eax
+; X86-NEXT: popl %esi
+; X86-NEXT: retl
+; X86-NEXT: .LBB16_1: # %res_block
+; X86-NEXT: setae %al
+; X86-NEXT: movzbl %al, %eax
+; X86-NEXT: leal -1(%eax,%eax), %eax
+; X86-NEXT: popl %esi
+; X86-NEXT: retl
+;
+; X64-LABEL: length5:
+; X64: # %bb.0: # %loadbb
+; X64-NEXT: movl (%rdi), %eax
+; X64-NEXT: movl (%rsi), %ecx
+; X64-NEXT: bswapl %eax
+; X64-NEXT: bswapl %ecx
+; X64-NEXT: cmpl %ecx, %eax
+; X64-NEXT: jne .LBB16_1
+; X64-NEXT: # %bb.2: # %loadbb1
+; X64-NEXT: movzbl 4(%rdi), %eax
+; X64-NEXT: movzbl 4(%rsi), %ecx
+; X64-NEXT: subl %ecx, %eax
+; X64-NEXT: retq
+; X64-NEXT: .LBB16_1: # %res_block
+; X64-NEXT: setae %al
+; X64-NEXT: movzbl %al, %eax
+; X64-NEXT: leal -1(%rax,%rax), %eax
+; X64-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 5) nounwind
+ ret i32 %m
+}
+
+define i1 @length5_eq(i8* %X, i8* %Y) nounwind {
+; X86-LABEL: length5_eq:
+; X86: # %bb.0:
+; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT: movl {{[0-9]+}}(%esp), %ecx
+; X86-NEXT: movl (%ecx), %edx
+; X86-NEXT: xorl (%eax), %edx
+; X86-NEXT: movb 4(%ecx), %cl
+; X86-NEXT: xorb 4(%eax), %cl
+; X86-NEXT: movzbl %cl, %eax
+; X86-NEXT: orl %edx, %eax
+; X86-NEXT: setne %al
+; X86-NEXT: retl
+;
+; X64-LABEL: length5_eq:
+; X64: # %bb.0:
+; X64-NEXT: movl (%rdi), %eax
+; X64-NEXT: xorl (%rsi), %eax
+; X64-NEXT: movb 4(%rdi), %cl
+; X64-NEXT: xorb 4(%rsi), %cl
+; X64-NEXT: movzbl %cl, %ecx
+; X64-NEXT: orl %eax, %ecx
+; X64-NEXT: setne %al
+; X64-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 5) nounwind
+ %c = icmp ne i32 %m, 0
+ ret i1 %c
+}
+
+define i1 @length5_lt(i8* %X, i8* %Y) nounwind {
+; X86-LABEL: length5_lt:
+; X86: # %bb.0: # %loadbb
+; X86-NEXT: pushl %esi
+; X86-NEXT: movl {{[0-9]+}}(%esp), %ecx
+; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT: movl (%eax), %edx
+; X86-NEXT: movl (%ecx), %esi
+; X86-NEXT: bswapl %edx
+; X86-NEXT: bswapl %esi
+; X86-NEXT: cmpl %esi, %edx
+; X86-NEXT: jne .LBB18_1
+; X86-NEXT: # %bb.2: # %loadbb1
+; X86-NEXT: movzbl 4(%eax), %eax
+; X86-NEXT: movzbl 4(%ecx), %ecx
+; X86-NEXT: subl %ecx, %eax
+; X86-NEXT: jmp .LBB18_3
+; X86-NEXT: .LBB18_1: # %res_block
+; X86-NEXT: setae %al
+; X86-NEXT: movzbl %al, %eax
+; X86-NEXT: leal -1(%eax,%eax), %eax
+; X86-NEXT: .LBB18_3: # %endblock
+; X86-NEXT: shrl $31, %eax
+; X86-NEXT: # kill: def $al killed $al killed $eax
+; X86-NEXT: popl %esi
+; X86-NEXT: retl
+;
+; X64-LABEL: length5_lt:
+; X64: # %bb.0: # %loadbb
+; X64-NEXT: movl (%rdi), %eax
+; X64-NEXT: movl (%rsi), %ecx
+; X64-NEXT: bswapl %eax
+; X64-NEXT: bswapl %ecx
+; X64-NEXT: cmpl %ecx, %eax
+; X64-NEXT: jne .LBB18_1
+; X64-NEXT: # %bb.2: # %loadbb1
+; X64-NEXT: movzbl 4(%rdi), %eax
+; X64-NEXT: movzbl 4(%rsi), %ecx
+; X64-NEXT: subl %ecx, %eax
+; X64-NEXT: shrl $31, %eax
+; X64-NEXT: # kill: def $al killed $al killed $eax
+; X64-NEXT: retq
+; X64-NEXT: .LBB18_1: # %res_block
+; X64-NEXT: setae %al
+; X64-NEXT: movzbl %al, %eax
+; X64-NEXT: leal -1(%rax,%rax), %eax
+; X64-NEXT: shrl $31, %eax
+; X64-NEXT: # kill: def $al killed $al killed $eax
+; X64-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 5) nounwind
+ %c = icmp slt i32 %m, 0
+ ret i1 %c
+}
+
+define i1 @length7_eq(i8* %X, i8* %Y) nounwind {
+; X86-LABEL: length7_eq:
+; X86: # %bb.0:
+; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT: movl {{[0-9]+}}(%esp), %ecx
+; X86-NEXT: movl (%ecx), %edx
+; X86-NEXT: movl 3(%ecx), %ecx
+; X86-NEXT: xorl (%eax), %edx
+; X86-NEXT: xorl 3(%eax), %ecx
+; X86-NEXT: orl %edx, %ecx
+; X86-NEXT: setne %al
+; X86-NEXT: retl
+;
+; X64-LABEL: length7_eq:
+; X64: # %bb.0:
+; X64-NEXT: movl (%rdi), %eax
+; X64-NEXT: movl 3(%rdi), %ecx
+; X64-NEXT: xorl (%rsi), %eax
+; X64-NEXT: xorl 3(%rsi), %ecx
+; X64-NEXT: orl %eax, %ecx
+; X64-NEXT: setne %al
+; X64-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 7) nounwind
+ %c = icmp ne i32 %m, 0
+ ret i1 %c
+}
+
+define i32 @length8(i8* %X, i8* %Y) nounwind {
+; X86-LABEL: length8:
+; X86: # %bb.0:
+; X86-NEXT: pushl %esi
+; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT: movl {{[0-9]+}}(%esp), %esi
+; X86-NEXT: movl (%esi), %ecx
+; X86-NEXT: movl (%eax), %edx
+; X86-NEXT: bswapl %ecx
+; X86-NEXT: bswapl %edx
+; X86-NEXT: cmpl %edx, %ecx
+; X86-NEXT: jne .LBB20_2
+; X86-NEXT: # %bb.1: # %loadbb1
+; X86-NEXT: movl 4(%esi), %ecx
+; X86-NEXT: movl 4(%eax), %edx
+; X86-NEXT: bswapl %ecx
+; X86-NEXT: bswapl %edx
+; X86-NEXT: xorl %eax, %eax
+; X86-NEXT: cmpl %edx, %ecx
+; X86-NEXT: je .LBB20_3
+; X86-NEXT: .LBB20_2: # %res_block
+; X86-NEXT: xorl %eax, %eax
+; X86-NEXT: cmpl %edx, %ecx
+; X86-NEXT: setae %al
+; X86-NEXT: leal -1(%eax,%eax), %eax
+; X86-NEXT: .LBB20_3: # %endblock
+; X86-NEXT: popl %esi
+; X86-NEXT: retl
+;
+; X64-LABEL: length8:
+; X64: # %bb.0:
+; X64-NEXT: movq (%rdi), %rcx
+; X64-NEXT: movq (%rsi), %rdx
+; X64-NEXT: bswapq %rcx
+; X64-NEXT: bswapq %rdx
+; X64-NEXT: xorl %eax, %eax
+; X64-NEXT: cmpq %rdx, %rcx
+; X64-NEXT: seta %al
+; X64-NEXT: sbbl $0, %eax
+; X64-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 8) nounwind
+ ret i32 %m
+}
+
+define i1 @length8_eq(i8* %X, i8* %Y) nounwind {
+; X86-LABEL: length8_eq:
+; X86: # %bb.0:
+; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT: movl {{[0-9]+}}(%esp), %ecx
+; X86-NEXT: movl (%ecx), %edx
+; X86-NEXT: movl 4(%ecx), %ecx
+; X86-NEXT: xorl (%eax), %edx
+; X86-NEXT: xorl 4(%eax), %ecx
+; X86-NEXT: orl %edx, %ecx
+; X86-NEXT: sete %al
+; X86-NEXT: retl
+;
+; X64-LABEL: length8_eq:
+; X64: # %bb.0:
+; X64-NEXT: movq (%rdi), %rax
+; X64-NEXT: cmpq (%rsi), %rax
+; X64-NEXT: sete %al
+; X64-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 8) nounwind
+ %c = icmp eq i32 %m, 0
+ ret i1 %c
+}
+
+define i1 @length8_eq_const(i8* %X) nounwind {
+; X86-LABEL: length8_eq_const:
+; X86: # %bb.0:
+; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT: movl $858927408, %ecx # imm = 0x33323130
+; X86-NEXT: xorl (%eax), %ecx
+; X86-NEXT: movl $926299444, %edx # imm = 0x37363534
+; X86-NEXT: xorl 4(%eax), %edx
+; X86-NEXT: orl %ecx, %edx
+; X86-NEXT: setne %al
+; X86-NEXT: retl
+;
+; X64-LABEL: length8_eq_const:
+; X64: # %bb.0:
+; X64-NEXT: movabsq $3978425819141910832, %rax # imm = 0x3736353433323130
+; X64-NEXT: cmpq %rax, (%rdi)
+; X64-NEXT: setne %al
+; X64-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* getelementptr inbounds ([65 x i8], [65 x i8]* @.str, i32 0, i32 0), i64 8) nounwind
+ %c = icmp ne i32 %m, 0
+ ret i1 %c
+}
+
+define i1 @length9_eq(i8* %X, i8* %Y) nounwind {
+; X86-LABEL: length9_eq:
+; X86: # %bb.0:
+; X86-NEXT: pushl $0
+; X86-NEXT: pushl $9
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: calll memcmp
+; X86-NEXT: addl $16, %esp
+; X86-NEXT: testl %eax, %eax
+; X86-NEXT: sete %al
+; X86-NEXT: retl
+;
+; X64-LABEL: length9_eq:
+; X64: # %bb.0:
+; X64-NEXT: movq (%rdi), %rax
+; X64-NEXT: xorq (%rsi), %rax
+; X64-NEXT: movb 8(%rdi), %cl
+; X64-NEXT: xorb 8(%rsi), %cl
+; X64-NEXT: movzbl %cl, %ecx
+; X64-NEXT: orq %rax, %rcx
+; X64-NEXT: sete %al
+; X64-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 9) nounwind
+ %c = icmp eq i32 %m, 0
+ ret i1 %c
+}
+
+define i1 @length10_eq(i8* %X, i8* %Y) nounwind {
+; X86-LABEL: length10_eq:
+; X86: # %bb.0:
+; X86-NEXT: pushl $0
+; X86-NEXT: pushl $10
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: calll memcmp
+; X86-NEXT: addl $16, %esp
+; X86-NEXT: testl %eax, %eax
+; X86-NEXT: sete %al
+; X86-NEXT: retl
+;
+; X64-LABEL: length10_eq:
+; X64: # %bb.0:
+; X64-NEXT: movq (%rdi), %rax
+; X64-NEXT: xorq (%rsi), %rax
+; X64-NEXT: movzwl 8(%rdi), %ecx
+; X64-NEXT: xorw 8(%rsi), %cx
+; X64-NEXT: movzwl %cx, %ecx
+; X64-NEXT: orq %rax, %rcx
+; X64-NEXT: sete %al
+; X64-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 10) nounwind
+ %c = icmp eq i32 %m, 0
+ ret i1 %c
+}
+
+define i1 @length11_eq(i8* %X, i8* %Y) nounwind {
+; X86-LABEL: length11_eq:
+; X86: # %bb.0:
+; X86-NEXT: pushl $0
+; X86-NEXT: pushl $11
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: calll memcmp
+; X86-NEXT: addl $16, %esp
+; X86-NEXT: testl %eax, %eax
+; X86-NEXT: sete %al
+; X86-NEXT: retl
+;
+; X64-LABEL: length11_eq:
+; X64: # %bb.0:
+; X64-NEXT: movq (%rdi), %rax
+; X64-NEXT: movq 3(%rdi), %rcx
+; X64-NEXT: xorq (%rsi), %rax
+; X64-NEXT: xorq 3(%rsi), %rcx
+; X64-NEXT: orq %rax, %rcx
+; X64-NEXT: sete %al
+; X64-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 11) nounwind
+ %c = icmp eq i32 %m, 0
+ ret i1 %c
+}
+
+define i1 @length12_eq(i8* %X, i8* %Y) nounwind {
+; X86-LABEL: length12_eq:
+; X86: # %bb.0:
+; X86-NEXT: pushl $0
+; X86-NEXT: pushl $12
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: calll memcmp
+; X86-NEXT: addl $16, %esp
+; X86-NEXT: testl %eax, %eax
+; X86-NEXT: setne %al
+; X86-NEXT: retl
+;
+; X64-LABEL: length12_eq:
+; X64: # %bb.0:
+; X64-NEXT: movq (%rdi), %rax
+; X64-NEXT: xorq (%rsi), %rax
+; X64-NEXT: movl 8(%rdi), %ecx
+; X64-NEXT: xorl 8(%rsi), %ecx
+; X64-NEXT: orq %rax, %rcx
+; X64-NEXT: setne %al
+; X64-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 12) nounwind
+ %c = icmp ne i32 %m, 0
+ ret i1 %c
+}
+
+define i32 @length12(i8* %X, i8* %Y) nounwind {
+; X86-LABEL: length12:
+; X86: # %bb.0:
+; X86-NEXT: pushl $0
+; X86-NEXT: pushl $12
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: calll memcmp
+; X86-NEXT: addl $16, %esp
+; X86-NEXT: retl
+;
+; X64-LABEL: length12:
+; X64: # %bb.0:
+; X64-NEXT: movq (%rdi), %rcx
+; X64-NEXT: movq (%rsi), %rdx
+; X64-NEXT: bswapq %rcx
+; X64-NEXT: bswapq %rdx
+; X64-NEXT: cmpq %rdx, %rcx
+; X64-NEXT: jne .LBB27_2
+; X64-NEXT: # %bb.1: # %loadbb1
+; X64-NEXT: movl 8(%rdi), %ecx
+; X64-NEXT: movl 8(%rsi), %edx
+; X64-NEXT: bswapl %ecx
+; X64-NEXT: bswapl %edx
+; X64-NEXT: xorl %eax, %eax
+; X64-NEXT: cmpq %rdx, %rcx
+; X64-NEXT: je .LBB27_3
+; X64-NEXT: .LBB27_2: # %res_block
+; X64-NEXT: xorl %eax, %eax
+; X64-NEXT: cmpq %rdx, %rcx
+; X64-NEXT: setae %al
+; X64-NEXT: leal -1(%rax,%rax), %eax
+; X64-NEXT: .LBB27_3: # %endblock
+; X64-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 12) nounwind
+ ret i32 %m
+}
+
+define i1 @length13_eq(i8* %X, i8* %Y) nounwind {
+; X86-LABEL: length13_eq:
+; X86: # %bb.0:
+; X86-NEXT: pushl $0
+; X86-NEXT: pushl $13
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: calll memcmp
+; X86-NEXT: addl $16, %esp
+; X86-NEXT: testl %eax, %eax
+; X86-NEXT: sete %al
+; X86-NEXT: retl
+;
+; X64-LABEL: length13_eq:
+; X64: # %bb.0:
+; X64-NEXT: movq (%rdi), %rax
+; X64-NEXT: movq 5(%rdi), %rcx
+; X64-NEXT: xorq (%rsi), %rax
+; X64-NEXT: xorq 5(%rsi), %rcx
+; X64-NEXT: orq %rax, %rcx
+; X64-NEXT: sete %al
+; X64-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 13) nounwind
+ %c = icmp eq i32 %m, 0
+ ret i1 %c
+}
+
+define i1 @length14_eq(i8* %X, i8* %Y) nounwind {
+; X86-LABEL: length14_eq:
+; X86: # %bb.0:
+; X86-NEXT: pushl $0
+; X86-NEXT: pushl $14
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: calll memcmp
+; X86-NEXT: addl $16, %esp
+; X86-NEXT: testl %eax, %eax
+; X86-NEXT: sete %al
+; X86-NEXT: retl
+;
+; X64-LABEL: length14_eq:
+; X64: # %bb.0:
+; X64-NEXT: movq (%rdi), %rax
+; X64-NEXT: movq 6(%rdi), %rcx
+; X64-NEXT: xorq (%rsi), %rax
+; X64-NEXT: xorq 6(%rsi), %rcx
+; X64-NEXT: orq %rax, %rcx
+; X64-NEXT: sete %al
+; X64-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 14) nounwind
+ %c = icmp eq i32 %m, 0
+ ret i1 %c
+}
+
+define i1 @length15_eq(i8* %X, i8* %Y) nounwind {
+; X86-LABEL: length15_eq:
+; X86: # %bb.0:
+; X86-NEXT: pushl $0
+; X86-NEXT: pushl $15
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: calll memcmp
+; X86-NEXT: addl $16, %esp
+; X86-NEXT: testl %eax, %eax
+; X86-NEXT: sete %al
+; X86-NEXT: retl
+;
+; X64-LABEL: length15_eq:
+; X64: # %bb.0:
+; X64-NEXT: movq (%rdi), %rax
+; X64-NEXT: movq 7(%rdi), %rcx
+; X64-NEXT: xorq (%rsi), %rax
+; X64-NEXT: xorq 7(%rsi), %rcx
+; X64-NEXT: orq %rax, %rcx
+; X64-NEXT: sete %al
+; X64-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 15) nounwind
+ %c = icmp eq i32 %m, 0
+ ret i1 %c
+}
+
+; PR33329 - https://bugs.llvm.org/show_bug.cgi?id=33329
+
+define i32 @length16(i8* %X, i8* %Y) nounwind {
+; X86-LABEL: length16:
+; X86: # %bb.0:
+; X86-NEXT: pushl $0
+; X86-NEXT: pushl $16
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: calll memcmp
+; X86-NEXT: addl $16, %esp
+; X86-NEXT: retl
+;
+; X64-LABEL: length16:
+; X64: # %bb.0:
+; X64-NEXT: movq (%rdi), %rcx
+; X64-NEXT: movq (%rsi), %rdx
+; X64-NEXT: bswapq %rcx
+; X64-NEXT: bswapq %rdx
+; X64-NEXT: cmpq %rdx, %rcx
+; X64-NEXT: jne .LBB31_2
+; X64-NEXT: # %bb.1: # %loadbb1
+; X64-NEXT: movq 8(%rdi), %rcx
+; X64-NEXT: movq 8(%rsi), %rdx
+; X64-NEXT: bswapq %rcx
+; X64-NEXT: bswapq %rdx
+; X64-NEXT: xorl %eax, %eax
+; X64-NEXT: cmpq %rdx, %rcx
+; X64-NEXT: je .LBB31_3
+; X64-NEXT: .LBB31_2: # %res_block
+; X64-NEXT: xorl %eax, %eax
+; X64-NEXT: cmpq %rdx, %rcx
+; X64-NEXT: setae %al
+; X64-NEXT: leal -1(%rax,%rax), %eax
+; X64-NEXT: .LBB31_3: # %endblock
+; X64-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 16) nounwind
+ ret i32 %m
+}
+
+define i1 @length16_eq(i8* %x, i8* %y) nounwind {
+; X86-NOSSE-LABEL: length16_eq:
+; X86-NOSSE: # %bb.0:
+; X86-NOSSE-NEXT: pushl $0
+; X86-NOSSE-NEXT: pushl $16
+; X86-NOSSE-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NOSSE-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NOSSE-NEXT: calll memcmp
+; X86-NOSSE-NEXT: addl $16, %esp
+; X86-NOSSE-NEXT: testl %eax, %eax
+; X86-NOSSE-NEXT: setne %al
+; X86-NOSSE-NEXT: retl
+;
+; X86-SSE1-LABEL: length16_eq:
+; X86-SSE1: # %bb.0:
+; X86-SSE1-NEXT: pushl $0
+; X86-SSE1-NEXT: pushl $16
+; X86-SSE1-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-SSE1-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-SSE1-NEXT: calll memcmp
+; X86-SSE1-NEXT: addl $16, %esp
+; X86-SSE1-NEXT: testl %eax, %eax
+; X86-SSE1-NEXT: setne %al
+; X86-SSE1-NEXT: retl
+;
+; X86-SSE2-LABEL: length16_eq:
+; X86-SSE2: # %bb.0:
+; X86-SSE2-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X86-SSE2-NEXT: movl {{[0-9]+}}(%esp), %ecx
+; X86-SSE2-NEXT: movdqu (%ecx), %xmm0
+; X86-SSE2-NEXT: movdqu (%eax), %xmm1
+; X86-SSE2-NEXT: pcmpeqb %xmm0, %xmm1
+; X86-SSE2-NEXT: pmovmskb %xmm1, %eax
+; X86-SSE2-NEXT: cmpl $65535, %eax # imm = 0xFFFF
+; X86-SSE2-NEXT: setne %al
+; X86-SSE2-NEXT: retl
+;
+; X64-SSE2-LABEL: length16_eq:
+; X64-SSE2: # %bb.0:
+; X64-SSE2-NEXT: movdqu (%rdi), %xmm0
+; X64-SSE2-NEXT: movdqu (%rsi), %xmm1
+; X64-SSE2-NEXT: pcmpeqb %xmm0, %xmm1
+; X64-SSE2-NEXT: pmovmskb %xmm1, %eax
+; X64-SSE2-NEXT: cmpl $65535, %eax # imm = 0xFFFF
+; X64-SSE2-NEXT: setne %al
+; X64-SSE2-NEXT: retq
+;
+; X64-AVX-LABEL: length16_eq:
+; X64-AVX: # %bb.0:
+; X64-AVX-NEXT: vmovdqu (%rdi), %xmm0
+; X64-AVX-NEXT: vpcmpeqb (%rsi), %xmm0, %xmm0
+; X64-AVX-NEXT: vpmovmskb %xmm0, %eax
+; X64-AVX-NEXT: cmpl $65535, %eax # imm = 0xFFFF
+; X64-AVX-NEXT: setne %al
+; X64-AVX-NEXT: retq
+ %call = tail call i32 @memcmp(i8* %x, i8* %y, i64 16) nounwind
+ %cmp = icmp ne i32 %call, 0
+ ret i1 %cmp
+}
+
+define i1 @length16_eq_const(i8* %X) nounwind {
+; X86-NOSSE-LABEL: length16_eq_const:
+; X86-NOSSE: # %bb.0:
+; X86-NOSSE-NEXT: pushl $0
+; X86-NOSSE-NEXT: pushl $16
+; X86-NOSSE-NEXT: pushl $.L.str
+; X86-NOSSE-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NOSSE-NEXT: calll memcmp
+; X86-NOSSE-NEXT: addl $16, %esp
+; X86-NOSSE-NEXT: testl %eax, %eax
+; X86-NOSSE-NEXT: sete %al
+; X86-NOSSE-NEXT: retl
+;
+; X86-SSE1-LABEL: length16_eq_const:
+; X86-SSE1: # %bb.0:
+; X86-SSE1-NEXT: pushl $0
+; X86-SSE1-NEXT: pushl $16
+; X86-SSE1-NEXT: pushl $.L.str
+; X86-SSE1-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-SSE1-NEXT: calll memcmp
+; X86-SSE1-NEXT: addl $16, %esp
+; X86-SSE1-NEXT: testl %eax, %eax
+; X86-SSE1-NEXT: sete %al
+; X86-SSE1-NEXT: retl
+;
+; X86-SSE2-LABEL: length16_eq_const:
+; X86-SSE2: # %bb.0:
+; X86-SSE2-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X86-SSE2-NEXT: movdqu (%eax), %xmm0
+; X86-SSE2-NEXT: pcmpeqb {{\.LCPI.*}}, %xmm0
+; X86-SSE2-NEXT: pmovmskb %xmm0, %eax
+; X86-SSE2-NEXT: cmpl $65535, %eax # imm = 0xFFFF
+; X86-SSE2-NEXT: sete %al
+; X86-SSE2-NEXT: retl
+;
+; X64-SSE2-LABEL: length16_eq_const:
+; X64-SSE2: # %bb.0:
+; X64-SSE2-NEXT: movdqu (%rdi), %xmm0
+; X64-SSE2-NEXT: pcmpeqb {{.*}}(%rip), %xmm0
+; X64-SSE2-NEXT: pmovmskb %xmm0, %eax
+; X64-SSE2-NEXT: cmpl $65535, %eax # imm = 0xFFFF
+; X64-SSE2-NEXT: sete %al
+; X64-SSE2-NEXT: retq
+;
+; X64-AVX-LABEL: length16_eq_const:
+; X64-AVX: # %bb.0:
+; X64-AVX-NEXT: vmovdqu (%rdi), %xmm0
+; X64-AVX-NEXT: vpcmpeqb {{.*}}(%rip), %xmm0, %xmm0
+; X64-AVX-NEXT: vpmovmskb %xmm0, %eax
+; X64-AVX-NEXT: cmpl $65535, %eax # imm = 0xFFFF
+; X64-AVX-NEXT: sete %al
+; X64-AVX-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* getelementptr inbounds ([65 x i8], [65 x i8]* @.str, i32 0, i32 0), i64 16) nounwind
+ %c = icmp eq i32 %m, 0
+ ret i1 %c
+}
+
+; PR33914 - https://bugs.llvm.org/show_bug.cgi?id=33914
+
+define i32 @length24(i8* %X, i8* %Y) nounwind {
+; X86-LABEL: length24:
+; X86: # %bb.0:
+; X86-NEXT: pushl $0
+; X86-NEXT: pushl $24
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: calll memcmp
+; X86-NEXT: addl $16, %esp
+; X86-NEXT: retl
+;
+; X64-LABEL: length24:
+; X64: # %bb.0:
+; X64-NEXT: movl $24, %edx
+; X64-NEXT: jmp memcmp # TAILCALL
+ %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 24) nounwind
+ ret i32 %m
+}
+
+define i1 @length24_eq(i8* %x, i8* %y) nounwind {
+; X86-NOSSE-LABEL: length24_eq:
+; X86-NOSSE: # %bb.0:
+; X86-NOSSE-NEXT: pushl $0
+; X86-NOSSE-NEXT: pushl $24
+; X86-NOSSE-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NOSSE-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NOSSE-NEXT: calll memcmp
+; X86-NOSSE-NEXT: addl $16, %esp
+; X86-NOSSE-NEXT: testl %eax, %eax
+; X86-NOSSE-NEXT: sete %al
+; X86-NOSSE-NEXT: retl
+;
+; X86-SSE1-LABEL: length24_eq:
+; X86-SSE1: # %bb.0:
+; X86-SSE1-NEXT: pushl $0
+; X86-SSE1-NEXT: pushl $24
+; X86-SSE1-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-SSE1-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-SSE1-NEXT: calll memcmp
+; X86-SSE1-NEXT: addl $16, %esp
+; X86-SSE1-NEXT: testl %eax, %eax
+; X86-SSE1-NEXT: sete %al
+; X86-SSE1-NEXT: retl
+;
+; X86-SSE2-LABEL: length24_eq:
+; X86-SSE2: # %bb.0:
+; X86-SSE2-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X86-SSE2-NEXT: movl {{[0-9]+}}(%esp), %ecx
+; X86-SSE2-NEXT: movdqu (%ecx), %xmm0
+; X86-SSE2-NEXT: movdqu 8(%ecx), %xmm1
+; X86-SSE2-NEXT: movdqu (%eax), %xmm2
+; X86-SSE2-NEXT: pcmpeqb %xmm0, %xmm2
+; X86-SSE2-NEXT: movdqu 8(%eax), %xmm0
+; X86-SSE2-NEXT: pcmpeqb %xmm1, %xmm0
+; X86-SSE2-NEXT: pand %xmm2, %xmm0
+; X86-SSE2-NEXT: pmovmskb %xmm0, %eax
+; X86-SSE2-NEXT: cmpl $65535, %eax # imm = 0xFFFF
+; X86-SSE2-NEXT: sete %al
+; X86-SSE2-NEXT: retl
+;
+; X64-SSE2-LABEL: length24_eq:
+; X64-SSE2: # %bb.0:
+; X64-SSE2-NEXT: movdqu (%rdi), %xmm0
+; X64-SSE2-NEXT: movdqu (%rsi), %xmm1
+; X64-SSE2-NEXT: pcmpeqb %xmm0, %xmm1
+; X64-SSE2-NEXT: movq {{.*#+}} xmm0 = mem[0],zero
+; X64-SSE2-NEXT: movq {{.*#+}} xmm2 = mem[0],zero
+; X64-SSE2-NEXT: pcmpeqb %xmm0, %xmm2
+; X64-SSE2-NEXT: pand %xmm1, %xmm2
+; X64-SSE2-NEXT: pmovmskb %xmm2, %eax
+; X64-SSE2-NEXT: cmpl $65535, %eax # imm = 0xFFFF
+; X64-SSE2-NEXT: sete %al
+; X64-SSE2-NEXT: retq
+;
+; X64-AVX-LABEL: length24_eq:
+; X64-AVX: # %bb.0:
+; X64-AVX-NEXT: vmovdqu (%rdi), %xmm0
+; X64-AVX-NEXT: vmovq {{.*#+}} xmm1 = mem[0],zero
+; X64-AVX-NEXT: vmovq {{.*#+}} xmm2 = mem[0],zero
+; X64-AVX-NEXT: vpcmpeqb %xmm2, %xmm1, %xmm1
+; X64-AVX-NEXT: vpcmpeqb (%rsi), %xmm0, %xmm0
+; X64-AVX-NEXT: vpand %xmm1, %xmm0, %xmm0
+; X64-AVX-NEXT: vpmovmskb %xmm0, %eax
+; X64-AVX-NEXT: cmpl $65535, %eax # imm = 0xFFFF
+; X64-AVX-NEXT: sete %al
+; X64-AVX-NEXT: retq
+ %call = tail call i32 @memcmp(i8* %x, i8* %y, i64 24) nounwind
+ %cmp = icmp eq i32 %call, 0
+ ret i1 %cmp
+}
+
+define i1 @length24_eq_const(i8* %X) nounwind {
+; X86-NOSSE-LABEL: length24_eq_const:
+; X86-NOSSE: # %bb.0:
+; X86-NOSSE-NEXT: pushl $0
+; X86-NOSSE-NEXT: pushl $24
+; X86-NOSSE-NEXT: pushl $.L.str
+; X86-NOSSE-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NOSSE-NEXT: calll memcmp
+; X86-NOSSE-NEXT: addl $16, %esp
+; X86-NOSSE-NEXT: testl %eax, %eax
+; X86-NOSSE-NEXT: setne %al
+; X86-NOSSE-NEXT: retl
+;
+; X86-SSE1-LABEL: length24_eq_const:
+; X86-SSE1: # %bb.0:
+; X86-SSE1-NEXT: pushl $0
+; X86-SSE1-NEXT: pushl $24
+; X86-SSE1-NEXT: pushl $.L.str
+; X86-SSE1-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-SSE1-NEXT: calll memcmp
+; X86-SSE1-NEXT: addl $16, %esp
+; X86-SSE1-NEXT: testl %eax, %eax
+; X86-SSE1-NEXT: setne %al
+; X86-SSE1-NEXT: retl
+;
+; X86-SSE2-LABEL: length24_eq_const:
+; X86-SSE2: # %bb.0:
+; X86-SSE2-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X86-SSE2-NEXT: movdqu (%eax), %xmm0
+; X86-SSE2-NEXT: movdqu 8(%eax), %xmm1
+; X86-SSE2-NEXT: pcmpeqb {{\.LCPI.*}}, %xmm1
+; X86-SSE2-NEXT: pcmpeqb {{\.LCPI.*}}, %xmm0
+; X86-SSE2-NEXT: pand %xmm1, %xmm0
+; X86-SSE2-NEXT: pmovmskb %xmm0, %eax
+; X86-SSE2-NEXT: cmpl $65535, %eax # imm = 0xFFFF
+; X86-SSE2-NEXT: setne %al
+; X86-SSE2-NEXT: retl
+;
+; X64-SSE2-LABEL: length24_eq_const:
+; X64-SSE2: # %bb.0:
+; X64-SSE2-NEXT: movdqu (%rdi), %xmm0
+; X64-SSE2-NEXT: movq {{.*#+}} xmm1 = mem[0],zero
+; X64-SSE2-NEXT: pcmpeqb {{.*}}(%rip), %xmm1
+; X64-SSE2-NEXT: pcmpeqb {{.*}}(%rip), %xmm0
+; X64-SSE2-NEXT: pand %xmm1, %xmm0
+; X64-SSE2-NEXT: pmovmskb %xmm0, %eax
+; X64-SSE2-NEXT: cmpl $65535, %eax # imm = 0xFFFF
+; X64-SSE2-NEXT: setne %al
+; X64-SSE2-NEXT: retq
+;
+; X64-AVX-LABEL: length24_eq_const:
+; X64-AVX: # %bb.0:
+; X64-AVX-NEXT: vmovdqu (%rdi), %xmm0
+; X64-AVX-NEXT: vmovq {{.*#+}} xmm1 = mem[0],zero
+; X64-AVX-NEXT: vpcmpeqb {{.*}}(%rip), %xmm1, %xmm1
+; X64-AVX-NEXT: vpcmpeqb {{.*}}(%rip), %xmm0, %xmm0
+; X64-AVX-NEXT: vpand %xmm1, %xmm0, %xmm0
+; X64-AVX-NEXT: vpmovmskb %xmm0, %eax
+; X64-AVX-NEXT: cmpl $65535, %eax # imm = 0xFFFF
+; X64-AVX-NEXT: setne %al
+; X64-AVX-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* getelementptr inbounds ([65 x i8], [65 x i8]* @.str, i32 0, i32 0), i64 24) nounwind
+ %c = icmp ne i32 %m, 0
+ ret i1 %c
+}
+
+define i32 @length32(i8* %X, i8* %Y) nounwind {
+; X86-LABEL: length32:
+; X86: # %bb.0:
+; X86-NEXT: pushl $0
+; X86-NEXT: pushl $32
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: calll memcmp
+; X86-NEXT: addl $16, %esp
+; X86-NEXT: retl
+;
+; X64-LABEL: length32:
+; X64: # %bb.0:
+; X64-NEXT: movl $32, %edx
+; X64-NEXT: jmp memcmp # TAILCALL
+ %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 32) nounwind
+ ret i32 %m
+}
+
+; PR33325 - https://bugs.llvm.org/show_bug.cgi?id=33325
+
+define i1 @length32_eq(i8* %x, i8* %y) nounwind {
+; X86-NOSSE-LABEL: length32_eq:
+; X86-NOSSE: # %bb.0:
+; X86-NOSSE-NEXT: pushl $0
+; X86-NOSSE-NEXT: pushl $32
+; X86-NOSSE-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NOSSE-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NOSSE-NEXT: calll memcmp
+; X86-NOSSE-NEXT: addl $16, %esp
+; X86-NOSSE-NEXT: testl %eax, %eax
+; X86-NOSSE-NEXT: sete %al
+; X86-NOSSE-NEXT: retl
+;
+; X86-SSE1-LABEL: length32_eq:
+; X86-SSE1: # %bb.0:
+; X86-SSE1-NEXT: pushl $0
+; X86-SSE1-NEXT: pushl $32
+; X86-SSE1-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-SSE1-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-SSE1-NEXT: calll memcmp
+; X86-SSE1-NEXT: addl $16, %esp
+; X86-SSE1-NEXT: testl %eax, %eax
+; X86-SSE1-NEXT: sete %al
+; X86-SSE1-NEXT: retl
+;
+; X86-SSE2-LABEL: length32_eq:
+; X86-SSE2: # %bb.0:
+; X86-SSE2-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X86-SSE2-NEXT: movl {{[0-9]+}}(%esp), %ecx
+; X86-SSE2-NEXT: movdqu (%ecx), %xmm0
+; X86-SSE2-NEXT: movdqu 16(%ecx), %xmm1
+; X86-SSE2-NEXT: movdqu (%eax), %xmm2
+; X86-SSE2-NEXT: pcmpeqb %xmm0, %xmm2
+; X86-SSE2-NEXT: movdqu 16(%eax), %xmm0
+; X86-SSE2-NEXT: pcmpeqb %xmm1, %xmm0
+; X86-SSE2-NEXT: pand %xmm2, %xmm0
+; X86-SSE2-NEXT: pmovmskb %xmm0, %eax
+; X86-SSE2-NEXT: cmpl $65535, %eax # imm = 0xFFFF
+; X86-SSE2-NEXT: sete %al
+; X86-SSE2-NEXT: retl
+;
+; X64-SSE2-LABEL: length32_eq:
+; X64-SSE2: # %bb.0:
+; X64-SSE2-NEXT: movdqu (%rdi), %xmm0
+; X64-SSE2-NEXT: movdqu 16(%rdi), %xmm1
+; X64-SSE2-NEXT: movdqu (%rsi), %xmm2
+; X64-SSE2-NEXT: pcmpeqb %xmm0, %xmm2
+; X64-SSE2-NEXT: movdqu 16(%rsi), %xmm0
+; X64-SSE2-NEXT: pcmpeqb %xmm1, %xmm0
+; X64-SSE2-NEXT: pand %xmm2, %xmm0
+; X64-SSE2-NEXT: pmovmskb %xmm0, %eax
+; X64-SSE2-NEXT: cmpl $65535, %eax # imm = 0xFFFF
+; X64-SSE2-NEXT: sete %al
+; X64-SSE2-NEXT: retq
+;
+; X64-AVX1-LABEL: length32_eq:
+; X64-AVX1: # %bb.0:
+; X64-AVX1-NEXT: vmovdqu (%rdi), %xmm0
+; X64-AVX1-NEXT: vmovdqu 16(%rdi), %xmm1
+; X64-AVX1-NEXT: vpcmpeqb 16(%rsi), %xmm1, %xmm1
+; X64-AVX1-NEXT: vpcmpeqb (%rsi), %xmm0, %xmm0
+; X64-AVX1-NEXT: vpand %xmm1, %xmm0, %xmm0
+; X64-AVX1-NEXT: vpmovmskb %xmm0, %eax
+; X64-AVX1-NEXT: cmpl $65535, %eax # imm = 0xFFFF
+; X64-AVX1-NEXT: sete %al
+; X64-AVX1-NEXT: retq
+;
+; X64-AVX2-LABEL: length32_eq:
+; X64-AVX2: # %bb.0:
+; X64-AVX2-NEXT: vmovdqu (%rdi), %ymm0
+; X64-AVX2-NEXT: vpcmpeqb (%rsi), %ymm0, %ymm0
+; X64-AVX2-NEXT: vpmovmskb %ymm0, %eax
+; X64-AVX2-NEXT: cmpl $-1, %eax
+; X64-AVX2-NEXT: sete %al
+; X64-AVX2-NEXT: vzeroupper
+; X64-AVX2-NEXT: retq
+ %call = tail call i32 @memcmp(i8* %x, i8* %y, i64 32) nounwind
+ %cmp = icmp eq i32 %call, 0
+ ret i1 %cmp
+}
+
+define i1 @length32_eq_prefer128(i8* %x, i8* %y) nounwind "prefer-vector-width"="128" {
+; X86-NOSSE-LABEL: length32_eq_prefer128:
+; X86-NOSSE: # %bb.0:
+; X86-NOSSE-NEXT: pushl $0
+; X86-NOSSE-NEXT: pushl $32
+; X86-NOSSE-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NOSSE-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NOSSE-NEXT: calll memcmp
+; X86-NOSSE-NEXT: addl $16, %esp
+; X86-NOSSE-NEXT: testl %eax, %eax
+; X86-NOSSE-NEXT: sete %al
+; X86-NOSSE-NEXT: retl
+;
+; X86-SSE1-LABEL: length32_eq_prefer128:
+; X86-SSE1: # %bb.0:
+; X86-SSE1-NEXT: pushl $0
+; X86-SSE1-NEXT: pushl $32
+; X86-SSE1-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-SSE1-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-SSE1-NEXT: calll memcmp
+; X86-SSE1-NEXT: addl $16, %esp
+; X86-SSE1-NEXT: testl %eax, %eax
+; X86-SSE1-NEXT: sete %al
+; X86-SSE1-NEXT: retl
+;
+; X86-SSE2-LABEL: length32_eq_prefer128:
+; X86-SSE2: # %bb.0:
+; X86-SSE2-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X86-SSE2-NEXT: movl {{[0-9]+}}(%esp), %ecx
+; X86-SSE2-NEXT: movdqu (%ecx), %xmm0
+; X86-SSE2-NEXT: movdqu 16(%ecx), %xmm1
+; X86-SSE2-NEXT: movdqu (%eax), %xmm2
+; X86-SSE2-NEXT: pcmpeqb %xmm0, %xmm2
+; X86-SSE2-NEXT: movdqu 16(%eax), %xmm0
+; X86-SSE2-NEXT: pcmpeqb %xmm1, %xmm0
+; X86-SSE2-NEXT: pand %xmm2, %xmm0
+; X86-SSE2-NEXT: pmovmskb %xmm0, %eax
+; X86-SSE2-NEXT: cmpl $65535, %eax # imm = 0xFFFF
+; X86-SSE2-NEXT: sete %al
+; X86-SSE2-NEXT: retl
+;
+; X64-SSE2-LABEL: length32_eq_prefer128:
+; X64-SSE2: # %bb.0:
+; X64-SSE2-NEXT: movdqu (%rdi), %xmm0
+; X64-SSE2-NEXT: movdqu 16(%rdi), %xmm1
+; X64-SSE2-NEXT: movdqu (%rsi), %xmm2
+; X64-SSE2-NEXT: pcmpeqb %xmm0, %xmm2
+; X64-SSE2-NEXT: movdqu 16(%rsi), %xmm0
+; X64-SSE2-NEXT: pcmpeqb %xmm1, %xmm0
+; X64-SSE2-NEXT: pand %xmm2, %xmm0
+; X64-SSE2-NEXT: pmovmskb %xmm0, %eax
+; X64-SSE2-NEXT: cmpl $65535, %eax # imm = 0xFFFF
+; X64-SSE2-NEXT: sete %al
+; X64-SSE2-NEXT: retq
+;
+; X64-AVX-LABEL: length32_eq_prefer128:
+; X64-AVX: # %bb.0:
+; X64-AVX-NEXT: vmovdqu (%rdi), %xmm0
+; X64-AVX-NEXT: vmovdqu 16(%rdi), %xmm1
+; X64-AVX-NEXT: vpcmpeqb 16(%rsi), %xmm1, %xmm1
+; X64-AVX-NEXT: vpcmpeqb (%rsi), %xmm0, %xmm0
+; X64-AVX-NEXT: vpand %xmm1, %xmm0, %xmm0
+; X64-AVX-NEXT: vpmovmskb %xmm0, %eax
+; X64-AVX-NEXT: cmpl $65535, %eax # imm = 0xFFFF
+; X64-AVX-NEXT: sete %al
+; X64-AVX-NEXT: retq
+ %call = tail call i32 @memcmp(i8* %x, i8* %y, i64 32) nounwind
+ %cmp = icmp eq i32 %call, 0
+ ret i1 %cmp
+}
+
+define i1 @length32_eq_const(i8* %X) nounwind {
+; X86-NOSSE-LABEL: length32_eq_const:
+; X86-NOSSE: # %bb.0:
+; X86-NOSSE-NEXT: pushl $0
+; X86-NOSSE-NEXT: pushl $32
+; X86-NOSSE-NEXT: pushl $.L.str
+; X86-NOSSE-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NOSSE-NEXT: calll memcmp
+; X86-NOSSE-NEXT: addl $16, %esp
+; X86-NOSSE-NEXT: testl %eax, %eax
+; X86-NOSSE-NEXT: setne %al
+; X86-NOSSE-NEXT: retl
+;
+; X86-SSE1-LABEL: length32_eq_const:
+; X86-SSE1: # %bb.0:
+; X86-SSE1-NEXT: pushl $0
+; X86-SSE1-NEXT: pushl $32
+; X86-SSE1-NEXT: pushl $.L.str
+; X86-SSE1-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-SSE1-NEXT: calll memcmp
+; X86-SSE1-NEXT: addl $16, %esp
+; X86-SSE1-NEXT: testl %eax, %eax
+; X86-SSE1-NEXT: setne %al
+; X86-SSE1-NEXT: retl
+;
+; X86-SSE2-LABEL: length32_eq_const:
+; X86-SSE2: # %bb.0:
+; X86-SSE2-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X86-SSE2-NEXT: movdqu (%eax), %xmm0
+; X86-SSE2-NEXT: movdqu 16(%eax), %xmm1
+; X86-SSE2-NEXT: pcmpeqb {{\.LCPI.*}}, %xmm1
+; X86-SSE2-NEXT: pcmpeqb {{\.LCPI.*}}, %xmm0
+; X86-SSE2-NEXT: pand %xmm1, %xmm0
+; X86-SSE2-NEXT: pmovmskb %xmm0, %eax
+; X86-SSE2-NEXT: cmpl $65535, %eax # imm = 0xFFFF
+; X86-SSE2-NEXT: setne %al
+; X86-SSE2-NEXT: retl
+;
+; X64-SSE2-LABEL: length32_eq_const:
+; X64-SSE2: # %bb.0:
+; X64-SSE2-NEXT: movdqu (%rdi), %xmm0
+; X64-SSE2-NEXT: movdqu 16(%rdi), %xmm1
+; X64-SSE2-NEXT: pcmpeqb {{.*}}(%rip), %xmm1
+; X64-SSE2-NEXT: pcmpeqb {{.*}}(%rip), %xmm0
+; X64-SSE2-NEXT: pand %xmm1, %xmm0
+; X64-SSE2-NEXT: pmovmskb %xmm0, %eax
+; X64-SSE2-NEXT: cmpl $65535, %eax # imm = 0xFFFF
+; X64-SSE2-NEXT: setne %al
+; X64-SSE2-NEXT: retq
+;
+; X64-AVX1-LABEL: length32_eq_const:
+; X64-AVX1: # %bb.0:
+; X64-AVX1-NEXT: vmovdqu (%rdi), %xmm0
+; X64-AVX1-NEXT: vmovdqu 16(%rdi), %xmm1
+; X64-AVX1-NEXT: vpcmpeqb {{.*}}(%rip), %xmm1, %xmm1
+; X64-AVX1-NEXT: vpcmpeqb {{.*}}(%rip), %xmm0, %xmm0
+; X64-AVX1-NEXT: vpand %xmm1, %xmm0, %xmm0
+; X64-AVX1-NEXT: vpmovmskb %xmm0, %eax
+; X64-AVX1-NEXT: cmpl $65535, %eax # imm = 0xFFFF
+; X64-AVX1-NEXT: setne %al
+; X64-AVX1-NEXT: retq
+;
+; X64-AVX2-LABEL: length32_eq_const:
+; X64-AVX2: # %bb.0:
+; X64-AVX2-NEXT: vmovdqu (%rdi), %ymm0
+; X64-AVX2-NEXT: vpcmpeqb {{.*}}(%rip), %ymm0, %ymm0
+; X64-AVX2-NEXT: vpmovmskb %ymm0, %eax
+; X64-AVX2-NEXT: cmpl $-1, %eax
+; X64-AVX2-NEXT: setne %al
+; X64-AVX2-NEXT: vzeroupper
+; X64-AVX2-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* getelementptr inbounds ([65 x i8], [65 x i8]* @.str, i32 0, i32 0), i64 32) nounwind
+ %c = icmp ne i32 %m, 0
+ ret i1 %c
+}
+
+define i32 @length64(i8* %X, i8* %Y) nounwind {
+; X86-LABEL: length64:
+; X86: # %bb.0:
+; X86-NEXT: pushl $0
+; X86-NEXT: pushl $64
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: calll memcmp
+; X86-NEXT: addl $16, %esp
+; X86-NEXT: retl
+;
+; X64-LABEL: length64:
+; X64: # %bb.0:
+; X64-NEXT: movl $64, %edx
+; X64-NEXT: jmp memcmp # TAILCALL
+ %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 64) nounwind
+ ret i32 %m
+}
+
+define i1 @length64_eq(i8* %x, i8* %y) nounwind {
+; X86-LABEL: length64_eq:
+; X86: # %bb.0:
+; X86-NEXT: pushl $0
+; X86-NEXT: pushl $64
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: calll memcmp
+; X86-NEXT: addl $16, %esp
+; X86-NEXT: testl %eax, %eax
+; X86-NEXT: setne %al
+; X86-NEXT: retl
+;
+; X64-SSE2-LABEL: length64_eq:
+; X64-SSE2: # %bb.0:
+; X64-SSE2-NEXT: pushq %rax
+; X64-SSE2-NEXT: movl $64, %edx
+; X64-SSE2-NEXT: callq memcmp
+; X64-SSE2-NEXT: testl %eax, %eax
+; X64-SSE2-NEXT: setne %al
+; X64-SSE2-NEXT: popq %rcx
+; X64-SSE2-NEXT: retq
+;
+; X64-AVX1-LABEL: length64_eq:
+; X64-AVX1: # %bb.0:
+; X64-AVX1-NEXT: pushq %rax
+; X64-AVX1-NEXT: movl $64, %edx
+; X64-AVX1-NEXT: callq memcmp
+; X64-AVX1-NEXT: testl %eax, %eax
+; X64-AVX1-NEXT: setne %al
+; X64-AVX1-NEXT: popq %rcx
+; X64-AVX1-NEXT: retq
+;
+; X64-AVX2-LABEL: length64_eq:
+; X64-AVX2: # %bb.0:
+; X64-AVX2-NEXT: vmovdqu (%rdi), %ymm0
+; X64-AVX2-NEXT: vmovdqu 32(%rdi), %ymm1
+; X64-AVX2-NEXT: vpcmpeqb 32(%rsi), %ymm1, %ymm1
+; X64-AVX2-NEXT: vpcmpeqb (%rsi), %ymm0, %ymm0
+; X64-AVX2-NEXT: vpand %ymm1, %ymm0, %ymm0
+; X64-AVX2-NEXT: vpmovmskb %ymm0, %eax
+; X64-AVX2-NEXT: cmpl $-1, %eax
+; X64-AVX2-NEXT: setne %al
+; X64-AVX2-NEXT: vzeroupper
+; X64-AVX2-NEXT: retq
+ %call = tail call i32 @memcmp(i8* %x, i8* %y, i64 64) nounwind
+ %cmp = icmp ne i32 %call, 0
+ ret i1 %cmp
+}
+
+define i1 @length64_eq_const(i8* %X) nounwind {
+; X86-LABEL: length64_eq_const:
+; X86: # %bb.0:
+; X86-NEXT: pushl $0
+; X86-NEXT: pushl $64
+; X86-NEXT: pushl $.L.str
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: calll memcmp
+; X86-NEXT: addl $16, %esp
+; X86-NEXT: testl %eax, %eax
+; X86-NEXT: sete %al
+; X86-NEXT: retl
+;
+; X64-SSE2-LABEL: length64_eq_const:
+; X64-SSE2: # %bb.0:
+; X64-SSE2-NEXT: pushq %rax
+; X64-SSE2-NEXT: movl $.L.str, %esi
+; X64-SSE2-NEXT: movl $64, %edx
+; X64-SSE2-NEXT: callq memcmp
+; X64-SSE2-NEXT: testl %eax, %eax
+; X64-SSE2-NEXT: sete %al
+; X64-SSE2-NEXT: popq %rcx
+; X64-SSE2-NEXT: retq
+;
+; X64-AVX1-LABEL: length64_eq_const:
+; X64-AVX1: # %bb.0:
+; X64-AVX1-NEXT: pushq %rax
+; X64-AVX1-NEXT: movl $.L.str, %esi
+; X64-AVX1-NEXT: movl $64, %edx
+; X64-AVX1-NEXT: callq memcmp
+; X64-AVX1-NEXT: testl %eax, %eax
+; X64-AVX1-NEXT: sete %al
+; X64-AVX1-NEXT: popq %rcx
+; X64-AVX1-NEXT: retq
+;
+; X64-AVX2-LABEL: length64_eq_const:
+; X64-AVX2: # %bb.0:
+; X64-AVX2-NEXT: vmovdqu (%rdi), %ymm0
+; X64-AVX2-NEXT: vmovdqu 32(%rdi), %ymm1
+; X64-AVX2-NEXT: vpcmpeqb {{.*}}(%rip), %ymm1, %ymm1
+; X64-AVX2-NEXT: vpcmpeqb {{.*}}(%rip), %ymm0, %ymm0
+; X64-AVX2-NEXT: vpand %ymm1, %ymm0, %ymm0
+; X64-AVX2-NEXT: vpmovmskb %ymm0, %eax
+; X64-AVX2-NEXT: cmpl $-1, %eax
+; X64-AVX2-NEXT: sete %al
+; X64-AVX2-NEXT: vzeroupper
+; X64-AVX2-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* getelementptr inbounds ([65 x i8], [65 x i8]* @.str, i32 0, i32 0), i64 64) nounwind
+ %c = icmp eq i32 %m, 0
+ ret i1 %c
+}
+
+; This checks that we do not do stupid things with huge sizes.
+define i32 @huge_length(i8* %X, i8* %Y) nounwind {
+; X86-LABEL: huge_length:
+; X86: # %bb.0:
+; X86-NEXT: pushl $2147483647 # imm = 0x7FFFFFFF
+; X86-NEXT: pushl $-1
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: calll memcmp
+; X86-NEXT: addl $16, %esp
+; X86-NEXT: retl
+;
+; X64-LABEL: huge_length:
+; X64: # %bb.0:
+; X64-NEXT: movabsq $9223372036854775807, %rdx # imm = 0x7FFFFFFFFFFFFFFF
+; X64-NEXT: jmp memcmp # TAILCALL
+ %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 9223372036854775807) nounwind
+ ret i32 %m
+}
+
+define i1 @huge_length_eq(i8* %X, i8* %Y) nounwind {
+; X86-LABEL: huge_length_eq:
+; X86: # %bb.0:
+; X86-NEXT: pushl $2147483647 # imm = 0x7FFFFFFF
+; X86-NEXT: pushl $-1
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: calll memcmp
+; X86-NEXT: addl $16, %esp
+; X86-NEXT: testl %eax, %eax
+; X86-NEXT: sete %al
+; X86-NEXT: retl
+;
+; X64-LABEL: huge_length_eq:
+; X64: # %bb.0:
+; X64-NEXT: pushq %rax
+; X64-NEXT: movabsq $9223372036854775807, %rdx # imm = 0x7FFFFFFFFFFFFFFF
+; X64-NEXT: callq memcmp
+; X64-NEXT: testl %eax, %eax
+; X64-NEXT: sete %al
+; X64-NEXT: popq %rcx
+; X64-NEXT: retq
+
+ %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 9223372036854775807) nounwind
+ %c = icmp eq i32 %m, 0
+ ret i1 %c
+}
+
+; This checks non-constant sizes.
+define i32 @nonconst_length(i8* %X, i8* %Y, i64 %size) nounwind {
+; X86-LABEL: nonconst_length:
+; X86: # %bb.0:
+; X86-NEXT: jmp memcmp # TAILCALL
+;
+; X64-LABEL: nonconst_length:
+; X64: # %bb.0:
+; X64-NEXT: jmp memcmp # TAILCALL
+ %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 %size) nounwind
+ ret i32 %m
+}
+
+define i1 @nonconst_length_eq(i8* %X, i8* %Y, i64 %size) nounwind {
+; X86-LABEL: nonconst_length_eq:
+; X86: # %bb.0:
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: pushl {{[0-9]+}}(%esp)
+; X86-NEXT: calll memcmp
+; X86-NEXT: addl $16, %esp
+; X86-NEXT: testl %eax, %eax
+; X86-NEXT: sete %al
+; X86-NEXT: retl
+;
+; X64-LABEL: nonconst_length_eq:
+; X64: # %bb.0:
+; X64-NEXT: pushq %rax
+; X64-NEXT: callq memcmp
+; X64-NEXT: testl %eax, %eax
+; X64-NEXT: sete %al
+; X64-NEXT: popq %rcx
+; X64-NEXT: retq
+ %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 %size) nounwind
+ %c = icmp eq i32 %m, 0
+ ret i1 %c
+}
; CHECK-NEXT: Scalar Evolution Analysis
; CHECK-NEXT: Loop Pass Manager
; CHECK-NEXT: Loop Invariant Code Motion
-; CHECK-NEXT: Merge contiguous icmps into a memcmp
-; CHECK-NEXT: Expand memcmp() to load/stores
-; CHECK-NEXT: Early CSE
; CHECK-NEXT: Post-Dominator Tree Construction
; CHECK-NEXT: Aggressive Dead Code Elimination
; CHECK-NEXT: Simplify the CFG
; CHECK-NEXT: Scalar Evolution Analysis
; CHECK-NEXT: Loop Pass Manager
; CHECK-NEXT: Loop Invariant Code Motion
-; CHECK-NEXT: Merge contiguous icmps into a memcmp
-; CHECK-NEXT: Expand memcmp() to load/stores
-; CHECK-NEXT: Early CSE
; CHECK-NEXT: Post-Dominator Tree Construction
; CHECK-NEXT: Aggressive Dead Code Elimination
; CHECK-NEXT: Simplify the CFG
; CHECK-NEXT: Scalar Evolution Analysis
; CHECK-NEXT: Loop Pass Manager
; CHECK-NEXT: Loop Invariant Code Motion
-; CHECK-NEXT: Merge contiguous icmps into a memcmp
-; CHECK-NEXT: Expand memcmp() to load/stores
-; CHECK-NEXT: Early CSE
; CHECK-NEXT: Post-Dominator Tree Construction
; CHECK-NEXT: Aggressive Dead Code Elimination
; CHECK-NEXT: Simplify the CFG
+++ /dev/null
-; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
-; RUN: opt < %s -S -expandmemcmp -verify-dom-info -mtriple=aarch64-linux-gnu -data-layout="e-m:e-i64:64-n32:64" | FileCheck %s
-; RUN: opt < %s -S -expandmemcmp -verify-dom-info -mtriple=aarch64-linux-gnu -mattr=strict-align -data-layout="E-m:e-i64:64-n32:64" | FileCheck %s --check-prefix=CHECK-STRICTALIGN
-
-declare i32 @bcmp(i8*, i8*, i64) nounwind readonly
-declare i32 @memcmp(i8*, i8*, i64) nounwind readonly
-
-define i1 @bcmp_b2(i8* %s1, i8* %s2) {
-; CHECK-LABEL: @bcmp_b2(
-; CHECK-NEXT: entry:
-; CHECK-NEXT: [[TMP0:%.*]] = bitcast i8* [[S1:%.*]] to i64*
-; CHECK-NEXT: [[TMP1:%.*]] = bitcast i8* [[S2:%.*]] to i64*
-; CHECK-NEXT: [[TMP2:%.*]] = load i64, i64* [[TMP0]]
-; CHECK-NEXT: [[TMP3:%.*]] = load i64, i64* [[TMP1]]
-; CHECK-NEXT: [[TMP4:%.*]] = xor i64 [[TMP2]], [[TMP3]]
-; CHECK-NEXT: [[TMP5:%.*]] = getelementptr i8, i8* [[S1]], i8 7
-; CHECK-NEXT: [[TMP6:%.*]] = bitcast i8* [[TMP5]] to i64*
-; CHECK-NEXT: [[TMP7:%.*]] = getelementptr i8, i8* [[S2]], i8 7
-; CHECK-NEXT: [[TMP8:%.*]] = bitcast i8* [[TMP7]] to i64*
-; CHECK-NEXT: [[TMP9:%.*]] = load i64, i64* [[TMP6]]
-; CHECK-NEXT: [[TMP10:%.*]] = load i64, i64* [[TMP8]]
-; CHECK-NEXT: [[TMP11:%.*]] = xor i64 [[TMP9]], [[TMP10]]
-; CHECK-NEXT: [[TMP12:%.*]] = or i64 [[TMP4]], [[TMP11]]
-; CHECK-NEXT: [[TMP13:%.*]] = icmp ne i64 [[TMP12]], 0
-; CHECK-NEXT: [[TMP14:%.*]] = zext i1 [[TMP13]] to i32
-; CHECK-NEXT: [[RET:%.*]] = icmp eq i32 [[TMP14]], 0
-; CHECK-NEXT: ret i1 [[RET]]
-;
-; CHECK-STRICTALIGN-LABEL: @bcmp_b2(
-; CHECK-STRICTALIGN-NEXT: entry:
-; CHECK-STRICTALIGN-NEXT: [[TMP0:%.*]] = bitcast i8* [[S1:%.*]] to i64*
-; CHECK-STRICTALIGN-NEXT: [[TMP1:%.*]] = bitcast i8* [[S2:%.*]] to i64*
-; CHECK-STRICTALIGN-NEXT: [[TMP2:%.*]] = load i64, i64* [[TMP0]]
-; CHECK-STRICTALIGN-NEXT: [[TMP3:%.*]] = load i64, i64* [[TMP1]]
-; CHECK-STRICTALIGN-NEXT: [[TMP4:%.*]] = xor i64 [[TMP2]], [[TMP3]]
-; CHECK-STRICTALIGN-NEXT: [[TMP5:%.*]] = getelementptr i8, i8* [[S1]], i8 8
-; CHECK-STRICTALIGN-NEXT: [[TMP6:%.*]] = bitcast i8* [[TMP5]] to i32*
-; CHECK-STRICTALIGN-NEXT: [[TMP7:%.*]] = getelementptr i8, i8* [[S2]], i8 8
-; CHECK-STRICTALIGN-NEXT: [[TMP8:%.*]] = bitcast i8* [[TMP7]] to i32*
-; CHECK-STRICTALIGN-NEXT: [[TMP9:%.*]] = load i32, i32* [[TMP6]]
-; CHECK-STRICTALIGN-NEXT: [[TMP10:%.*]] = load i32, i32* [[TMP8]]
-; CHECK-STRICTALIGN-NEXT: [[TMP11:%.*]] = zext i32 [[TMP9]] to i64
-; CHECK-STRICTALIGN-NEXT: [[TMP12:%.*]] = zext i32 [[TMP10]] to i64
-; CHECK-STRICTALIGN-NEXT: [[TMP13:%.*]] = xor i64 [[TMP11]], [[TMP12]]
-; CHECK-STRICTALIGN-NEXT: [[TMP14:%.*]] = getelementptr i8, i8* [[S1]], i8 12
-; CHECK-STRICTALIGN-NEXT: [[TMP15:%.*]] = bitcast i8* [[TMP14]] to i16*
-; CHECK-STRICTALIGN-NEXT: [[TMP16:%.*]] = getelementptr i8, i8* [[S2]], i8 12
-; CHECK-STRICTALIGN-NEXT: [[TMP17:%.*]] = bitcast i8* [[TMP16]] to i16*
-; CHECK-STRICTALIGN-NEXT: [[TMP18:%.*]] = load i16, i16* [[TMP15]]
-; CHECK-STRICTALIGN-NEXT: [[TMP19:%.*]] = load i16, i16* [[TMP17]]
-; CHECK-STRICTALIGN-NEXT: [[TMP20:%.*]] = zext i16 [[TMP18]] to i64
-; CHECK-STRICTALIGN-NEXT: [[TMP21:%.*]] = zext i16 [[TMP19]] to i64
-; CHECK-STRICTALIGN-NEXT: [[TMP22:%.*]] = xor i64 [[TMP20]], [[TMP21]]
-; CHECK-STRICTALIGN-NEXT: [[TMP23:%.*]] = getelementptr i8, i8* [[S1]], i8 14
-; CHECK-STRICTALIGN-NEXT: [[TMP24:%.*]] = getelementptr i8, i8* [[S2]], i8 14
-; CHECK-STRICTALIGN-NEXT: [[TMP25:%.*]] = load i8, i8* [[TMP23]]
-; CHECK-STRICTALIGN-NEXT: [[TMP26:%.*]] = load i8, i8* [[TMP24]]
-; CHECK-STRICTALIGN-NEXT: [[TMP27:%.*]] = zext i8 [[TMP25]] to i64
-; CHECK-STRICTALIGN-NEXT: [[TMP28:%.*]] = zext i8 [[TMP26]] to i64
-; CHECK-STRICTALIGN-NEXT: [[TMP29:%.*]] = xor i64 [[TMP27]], [[TMP28]]
-; CHECK-STRICTALIGN-NEXT: [[TMP30:%.*]] = or i64 [[TMP4]], [[TMP13]]
-; CHECK-STRICTALIGN-NEXT: [[TMP31:%.*]] = or i64 [[TMP22]], [[TMP29]]
-; CHECK-STRICTALIGN-NEXT: [[TMP32:%.*]] = or i64 [[TMP30]], [[TMP31]]
-; CHECK-STRICTALIGN-NEXT: [[TMP33:%.*]] = icmp ne i64 [[TMP32]], 0
-; CHECK-STRICTALIGN-NEXT: [[TMP34:%.*]] = zext i1 [[TMP33]] to i32
-; CHECK-STRICTALIGN-NEXT: [[RET:%.*]] = icmp eq i32 [[TMP34]], 0
-; CHECK-STRICTALIGN-NEXT: ret i1 [[RET]]
-;
-entry:
- %bcmp = call i32 @bcmp(i8* %s1, i8* %s2, i64 15)
- %ret = icmp eq i32 %bcmp, 0
- ret i1 %ret
-}
-
-define i1 @bcmp_bs(i8* %s1, i8* %s2) optsize {
-; CHECK-LABEL: @bcmp_bs(
-; CHECK-NEXT: entry:
-; CHECK-NEXT: [[TMP0:%.*]] = bitcast i8* [[S1:%.*]] to i64*
-; CHECK-NEXT: [[TMP1:%.*]] = bitcast i8* [[S2:%.*]] to i64*
-; CHECK-NEXT: [[TMP2:%.*]] = load i64, i64* [[TMP0]]
-; CHECK-NEXT: [[TMP3:%.*]] = load i64, i64* [[TMP1]]
-; CHECK-NEXT: [[TMP4:%.*]] = xor i64 [[TMP2]], [[TMP3]]
-; CHECK-NEXT: [[TMP5:%.*]] = getelementptr i8, i8* [[S1]], i8 8
-; CHECK-NEXT: [[TMP6:%.*]] = bitcast i8* [[TMP5]] to i64*
-; CHECK-NEXT: [[TMP7:%.*]] = getelementptr i8, i8* [[S2]], i8 8
-; CHECK-NEXT: [[TMP8:%.*]] = bitcast i8* [[TMP7]] to i64*
-; CHECK-NEXT: [[TMP9:%.*]] = load i64, i64* [[TMP6]]
-; CHECK-NEXT: [[TMP10:%.*]] = load i64, i64* [[TMP8]]
-; CHECK-NEXT: [[TMP11:%.*]] = xor i64 [[TMP9]], [[TMP10]]
-; CHECK-NEXT: [[TMP12:%.*]] = getelementptr i8, i8* [[S1]], i8 16
-; CHECK-NEXT: [[TMP13:%.*]] = bitcast i8* [[TMP12]] to i64*
-; CHECK-NEXT: [[TMP14:%.*]] = getelementptr i8, i8* [[S2]], i8 16
-; CHECK-NEXT: [[TMP15:%.*]] = bitcast i8* [[TMP14]] to i64*
-; CHECK-NEXT: [[TMP16:%.*]] = load i64, i64* [[TMP13]]
-; CHECK-NEXT: [[TMP17:%.*]] = load i64, i64* [[TMP15]]
-; CHECK-NEXT: [[TMP18:%.*]] = xor i64 [[TMP16]], [[TMP17]]
-; CHECK-NEXT: [[TMP19:%.*]] = getelementptr i8, i8* [[S1]], i8 23
-; CHECK-NEXT: [[TMP20:%.*]] = bitcast i8* [[TMP19]] to i64*
-; CHECK-NEXT: [[TMP21:%.*]] = getelementptr i8, i8* [[S2]], i8 23
-; CHECK-NEXT: [[TMP22:%.*]] = bitcast i8* [[TMP21]] to i64*
-; CHECK-NEXT: [[TMP23:%.*]] = load i64, i64* [[TMP20]]
-; CHECK-NEXT: [[TMP24:%.*]] = load i64, i64* [[TMP22]]
-; CHECK-NEXT: [[TMP25:%.*]] = xor i64 [[TMP23]], [[TMP24]]
-; CHECK-NEXT: [[TMP26:%.*]] = or i64 [[TMP4]], [[TMP11]]
-; CHECK-NEXT: [[TMP27:%.*]] = or i64 [[TMP18]], [[TMP25]]
-; CHECK-NEXT: [[TMP28:%.*]] = or i64 [[TMP26]], [[TMP27]]
-; CHECK-NEXT: [[TMP29:%.*]] = icmp ne i64 [[TMP28]], 0
-; CHECK-NEXT: [[TMP30:%.*]] = zext i1 [[TMP29]] to i32
-; CHECK-NEXT: [[RET:%.*]] = icmp eq i32 [[TMP30]], 0
-; CHECK-NEXT: ret i1 [[RET]]
-;
-; CHECK-STRICTALIGN-LABEL: @bcmp_bs(
-; CHECK-STRICTALIGN-NEXT: entry:
-; CHECK-STRICTALIGN-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* [[S1:%.*]], i8* [[S2:%.*]], i64 31)
-; CHECK-STRICTALIGN-NEXT: [[RET:%.*]] = icmp eq i32 [[MEMCMP]], 0
-; CHECK-STRICTALIGN-NEXT: ret i1 [[RET]]
-;
-entry:
- %memcmp = call i32 @memcmp(i8* %s1, i8* %s2, i64 31)
- %ret = icmp eq i32 %memcmp, 0
- ret i1 %ret
-}
-
-
+++ /dev/null
-if not 'PowerPC' in config.root.targets:
- config.unsupported = True
-
+++ /dev/null
-; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
-; RUN: opt < %s -S -expandmemcmp -verify-dom-info -mtriple=powerpc64le-unknown-gnu-linux -data-layout="e-m:e-i64:64-n32:64" | FileCheck %s
-; RUN: opt < %s -S -expandmemcmp -verify-dom-info -mtriple=powerpc64-unknown-gnu-linux -data-layout="E-m:e-i64:64-n32:64" | FileCheck %s --check-prefix=CHECK-BE
-
-define signext i32 @test1(i32* nocapture readonly %buffer1, i32* nocapture readonly %buffer2) {
-; CHECK-LABEL: @test1(
-; CHECK-NEXT: entry:
-; CHECK-NEXT: [[TMP0:%.*]] = bitcast i32* [[BUFFER1:%.*]] to i8*
-; CHECK-NEXT: [[TMP1:%.*]] = bitcast i32* [[BUFFER2:%.*]] to i8*
-; CHECK-NEXT: br label [[LOADBB:%.*]]
-; CHECK: res_block:
-; CHECK-NEXT: [[PHI_SRC1:%.*]] = phi i64 [ [[TMP8:%.*]], [[LOADBB]] ], [ [[TMP17:%.*]], [[LOADBB1:%.*]] ]
-; CHECK-NEXT: [[PHI_SRC2:%.*]] = phi i64 [ [[TMP9:%.*]], [[LOADBB]] ], [ [[TMP18:%.*]], [[LOADBB1]] ]
-; CHECK-NEXT: [[TMP2:%.*]] = icmp ult i64 [[PHI_SRC1]], [[PHI_SRC2]]
-; CHECK-NEXT: [[TMP3:%.*]] = select i1 [[TMP2]], i32 -1, i32 1
-; CHECK-NEXT: br label [[ENDBLOCK:%.*]]
-; CHECK: loadbb:
-; CHECK-NEXT: [[TMP4:%.*]] = bitcast i8* [[TMP0]] to i64*
-; CHECK-NEXT: [[TMP5:%.*]] = bitcast i8* [[TMP1]] to i64*
-; CHECK-NEXT: [[TMP6:%.*]] = load i64, i64* [[TMP4]]
-; CHECK-NEXT: [[TMP7:%.*]] = load i64, i64* [[TMP5]]
-; CHECK-NEXT: [[TMP8]] = call i64 @llvm.bswap.i64(i64 [[TMP6]])
-; CHECK-NEXT: [[TMP9]] = call i64 @llvm.bswap.i64(i64 [[TMP7]])
-; CHECK-NEXT: [[TMP10:%.*]] = icmp eq i64 [[TMP8]], [[TMP9]]
-; CHECK-NEXT: br i1 [[TMP10]], label [[LOADBB1]], label [[RES_BLOCK:%.*]]
-; CHECK: loadbb1:
-; CHECK-NEXT: [[TMP11:%.*]] = getelementptr i8, i8* [[TMP0]], i8 8
-; CHECK-NEXT: [[TMP12:%.*]] = bitcast i8* [[TMP11]] to i64*
-; CHECK-NEXT: [[TMP13:%.*]] = getelementptr i8, i8* [[TMP1]], i8 8
-; CHECK-NEXT: [[TMP14:%.*]] = bitcast i8* [[TMP13]] to i64*
-; CHECK-NEXT: [[TMP15:%.*]] = load i64, i64* [[TMP12]]
-; CHECK-NEXT: [[TMP16:%.*]] = load i64, i64* [[TMP14]]
-; CHECK-NEXT: [[TMP17]] = call i64 @llvm.bswap.i64(i64 [[TMP15]])
-; CHECK-NEXT: [[TMP18]] = call i64 @llvm.bswap.i64(i64 [[TMP16]])
-; CHECK-NEXT: [[TMP19:%.*]] = icmp eq i64 [[TMP17]], [[TMP18]]
-; CHECK-NEXT: br i1 [[TMP19]], label [[ENDBLOCK]], label [[RES_BLOCK]]
-; CHECK: endblock:
-; CHECK-NEXT: [[PHI_RES:%.*]] = phi i32 [ 0, [[LOADBB1]] ], [ [[TMP3]], [[RES_BLOCK]] ]
-; CHECK-NEXT: ret i32 [[PHI_RES]]
-;
-; CHECK-BE-LABEL: @test1(
-; CHECK-BE-NEXT: entry:
-; CHECK-BE-NEXT: [[TMP0:%.*]] = bitcast i32* [[BUFFER1:%.*]] to i8*
-; CHECK-BE-NEXT: [[TMP1:%.*]] = bitcast i32* [[BUFFER2:%.*]] to i8*
-; CHECK-BE-NEXT: br label [[LOADBB:%.*]]
-; CHECK-BE: res_block:
-; CHECK-BE-NEXT: [[PHI_SRC1:%.*]] = phi i64 [ [[TMP6:%.*]], [[LOADBB]] ], [ [[TMP13:%.*]], [[LOADBB1:%.*]] ]
-; CHECK-BE-NEXT: [[PHI_SRC2:%.*]] = phi i64 [ [[TMP7:%.*]], [[LOADBB]] ], [ [[TMP14:%.*]], [[LOADBB1]] ]
-; CHECK-BE-NEXT: [[TMP2:%.*]] = icmp ult i64 [[PHI_SRC1]], [[PHI_SRC2]]
-; CHECK-BE-NEXT: [[TMP3:%.*]] = select i1 [[TMP2]], i32 -1, i32 1
-; CHECK-BE-NEXT: br label [[ENDBLOCK:%.*]]
-; CHECK-BE: loadbb:
-; CHECK-BE-NEXT: [[TMP4:%.*]] = bitcast i8* [[TMP0]] to i64*
-; CHECK-BE-NEXT: [[TMP5:%.*]] = bitcast i8* [[TMP1]] to i64*
-; CHECK-BE-NEXT: [[TMP6]] = load i64, i64* [[TMP4]]
-; CHECK-BE-NEXT: [[TMP7]] = load i64, i64* [[TMP5]]
-; CHECK-BE-NEXT: [[TMP8:%.*]] = icmp eq i64 [[TMP6]], [[TMP7]]
-; CHECK-BE-NEXT: br i1 [[TMP8]], label [[LOADBB1]], label [[RES_BLOCK:%.*]]
-; CHECK-BE: loadbb1:
-; CHECK-BE-NEXT: [[TMP9:%.*]] = getelementptr i8, i8* [[TMP0]], i8 8
-; CHECK-BE-NEXT: [[TMP10:%.*]] = bitcast i8* [[TMP9]] to i64*
-; CHECK-BE-NEXT: [[TMP11:%.*]] = getelementptr i8, i8* [[TMP1]], i8 8
-; CHECK-BE-NEXT: [[TMP12:%.*]] = bitcast i8* [[TMP11]] to i64*
-; CHECK-BE-NEXT: [[TMP13]] = load i64, i64* [[TMP10]]
-; CHECK-BE-NEXT: [[TMP14]] = load i64, i64* [[TMP12]]
-; CHECK-BE-NEXT: [[TMP15:%.*]] = icmp eq i64 [[TMP13]], [[TMP14]]
-; CHECK-BE-NEXT: br i1 [[TMP15]], label [[ENDBLOCK]], label [[RES_BLOCK]]
-; CHECK-BE: endblock:
-; CHECK-BE-NEXT: [[PHI_RES:%.*]] = phi i32 [ 0, [[LOADBB1]] ], [ [[TMP3]], [[RES_BLOCK]] ]
-; CHECK-BE-NEXT: ret i32 [[PHI_RES]]
-;
-entry:
-
-
-
-
-
-
- %0 = bitcast i32* %buffer1 to i8*
- %1 = bitcast i32* %buffer2 to i8*
- %call = tail call signext i32 @memcmp(i8* %0, i8* %1, i64 16)
- ret i32 %call
-}
-
-declare signext i32 @memcmp(i8* nocapture, i8* nocapture, i64) local_unnamed_addr #1
-
-define signext i32 @test2(i32* nocapture readonly %buffer1, i32* nocapture readonly %buffer2) {
-; CHECK-LABEL: @test2(
-; CHECK-NEXT: entry:
-; CHECK-NEXT: [[TMP0:%.*]] = bitcast i32* [[BUFFER1:%.*]] to i8*
-; CHECK-NEXT: [[TMP1:%.*]] = bitcast i32* [[BUFFER2:%.*]] to i8*
-; CHECK-NEXT: [[TMP2:%.*]] = bitcast i8* [[TMP0]] to i32*
-; CHECK-NEXT: [[TMP3:%.*]] = bitcast i8* [[TMP1]] to i32*
-; CHECK-NEXT: [[TMP4:%.*]] = load i32, i32* [[TMP2]]
-; CHECK-NEXT: [[TMP5:%.*]] = load i32, i32* [[TMP3]]
-; CHECK-NEXT: [[TMP6:%.*]] = call i32 @llvm.bswap.i32(i32 [[TMP4]])
-; CHECK-NEXT: [[TMP7:%.*]] = call i32 @llvm.bswap.i32(i32 [[TMP5]])
-; CHECK-NEXT: [[TMP8:%.*]] = icmp ugt i32 [[TMP6]], [[TMP7]]
-; CHECK-NEXT: [[TMP9:%.*]] = icmp ult i32 [[TMP6]], [[TMP7]]
-; CHECK-NEXT: [[TMP10:%.*]] = zext i1 [[TMP8]] to i32
-; CHECK-NEXT: [[TMP11:%.*]] = zext i1 [[TMP9]] to i32
-; CHECK-NEXT: [[TMP12:%.*]] = sub i32 [[TMP10]], [[TMP11]]
-; CHECK-NEXT: ret i32 [[TMP12]]
-;
-; CHECK-BE-LABEL: @test2(
-; CHECK-BE-NEXT: entry:
-; CHECK-BE-NEXT: [[TMP0:%.*]] = bitcast i32* [[BUFFER1:%.*]] to i8*
-; CHECK-BE-NEXT: [[TMP1:%.*]] = bitcast i32* [[BUFFER2:%.*]] to i8*
-; CHECK-BE-NEXT: [[TMP2:%.*]] = bitcast i8* [[TMP0]] to i32*
-; CHECK-BE-NEXT: [[TMP3:%.*]] = bitcast i8* [[TMP1]] to i32*
-; CHECK-BE-NEXT: [[TMP4:%.*]] = load i32, i32* [[TMP2]]
-; CHECK-BE-NEXT: [[TMP5:%.*]] = load i32, i32* [[TMP3]]
-; CHECK-BE-NEXT: [[TMP6:%.*]] = icmp ugt i32 [[TMP4]], [[TMP5]]
-; CHECK-BE-NEXT: [[TMP7:%.*]] = icmp ult i32 [[TMP4]], [[TMP5]]
-; CHECK-BE-NEXT: [[TMP8:%.*]] = zext i1 [[TMP6]] to i32
-; CHECK-BE-NEXT: [[TMP9:%.*]] = zext i1 [[TMP7]] to i32
-; CHECK-BE-NEXT: [[TMP10:%.*]] = sub i32 [[TMP8]], [[TMP9]]
-; CHECK-BE-NEXT: ret i32 [[TMP10]]
-;
-
-
-entry:
- %0 = bitcast i32* %buffer1 to i8*
- %1 = bitcast i32* %buffer2 to i8*
- %call = tail call signext i32 @memcmp(i8* %0, i8* %1, i64 4)
- ret i32 %call
-}
-
-define signext i32 @test3(i32* nocapture readonly %buffer1, i32* nocapture readonly %buffer2) {
-; CHECK-LABEL: @test3(
-; CHECK-NEXT: entry:
-; CHECK-NEXT: [[TMP0:%.*]] = bitcast i32* [[BUFFER1:%.*]] to i8*
-; CHECK-NEXT: [[TMP1:%.*]] = bitcast i32* [[BUFFER2:%.*]] to i8*
-; CHECK-NEXT: br label [[LOADBB:%.*]]
-; CHECK: res_block:
-; CHECK-NEXT: [[PHI_SRC1:%.*]] = phi i64 [ [[TMP8:%.*]], [[LOADBB]] ], [ [[TMP19:%.*]], [[LOADBB1:%.*]] ], [ [[TMP30:%.*]], [[LOADBB2:%.*]] ]
-; CHECK-NEXT: [[PHI_SRC2:%.*]] = phi i64 [ [[TMP9:%.*]], [[LOADBB]] ], [ [[TMP20:%.*]], [[LOADBB1]] ], [ [[TMP31:%.*]], [[LOADBB2]] ]
-; CHECK-NEXT: [[TMP2:%.*]] = icmp ult i64 [[PHI_SRC1]], [[PHI_SRC2]]
-; CHECK-NEXT: [[TMP3:%.*]] = select i1 [[TMP2]], i32 -1, i32 1
-; CHECK-NEXT: br label [[ENDBLOCK:%.*]]
-; CHECK: loadbb:
-; CHECK-NEXT: [[TMP4:%.*]] = bitcast i8* [[TMP0]] to i64*
-; CHECK-NEXT: [[TMP5:%.*]] = bitcast i8* [[TMP1]] to i64*
-; CHECK-NEXT: [[TMP6:%.*]] = load i64, i64* [[TMP4]]
-; CHECK-NEXT: [[TMP7:%.*]] = load i64, i64* [[TMP5]]
-; CHECK-NEXT: [[TMP8]] = call i64 @llvm.bswap.i64(i64 [[TMP6]])
-; CHECK-NEXT: [[TMP9]] = call i64 @llvm.bswap.i64(i64 [[TMP7]])
-; CHECK-NEXT: [[TMP10:%.*]] = icmp eq i64 [[TMP8]], [[TMP9]]
-; CHECK-NEXT: br i1 [[TMP10]], label [[LOADBB1]], label [[RES_BLOCK:%.*]]
-; CHECK: loadbb1:
-; CHECK-NEXT: [[TMP11:%.*]] = getelementptr i8, i8* [[TMP0]], i8 8
-; CHECK-NEXT: [[TMP12:%.*]] = bitcast i8* [[TMP11]] to i32*
-; CHECK-NEXT: [[TMP13:%.*]] = getelementptr i8, i8* [[TMP1]], i8 8
-; CHECK-NEXT: [[TMP14:%.*]] = bitcast i8* [[TMP13]] to i32*
-; CHECK-NEXT: [[TMP15:%.*]] = load i32, i32* [[TMP12]]
-; CHECK-NEXT: [[TMP16:%.*]] = load i32, i32* [[TMP14]]
-; CHECK-NEXT: [[TMP17:%.*]] = call i32 @llvm.bswap.i32(i32 [[TMP15]])
-; CHECK-NEXT: [[TMP18:%.*]] = call i32 @llvm.bswap.i32(i32 [[TMP16]])
-; CHECK-NEXT: [[TMP19]] = zext i32 [[TMP17]] to i64
-; CHECK-NEXT: [[TMP20]] = zext i32 [[TMP18]] to i64
-; CHECK-NEXT: [[TMP21:%.*]] = icmp eq i64 [[TMP19]], [[TMP20]]
-; CHECK-NEXT: br i1 [[TMP21]], label [[LOADBB2]], label [[RES_BLOCK]]
-; CHECK: loadbb2:
-; CHECK-NEXT: [[TMP22:%.*]] = getelementptr i8, i8* [[TMP0]], i8 12
-; CHECK-NEXT: [[TMP23:%.*]] = bitcast i8* [[TMP22]] to i16*
-; CHECK-NEXT: [[TMP24:%.*]] = getelementptr i8, i8* [[TMP1]], i8 12
-; CHECK-NEXT: [[TMP25:%.*]] = bitcast i8* [[TMP24]] to i16*
-; CHECK-NEXT: [[TMP26:%.*]] = load i16, i16* [[TMP23]]
-; CHECK-NEXT: [[TMP27:%.*]] = load i16, i16* [[TMP25]]
-; CHECK-NEXT: [[TMP28:%.*]] = call i16 @llvm.bswap.i16(i16 [[TMP26]])
-; CHECK-NEXT: [[TMP29:%.*]] = call i16 @llvm.bswap.i16(i16 [[TMP27]])
-; CHECK-NEXT: [[TMP30]] = zext i16 [[TMP28]] to i64
-; CHECK-NEXT: [[TMP31]] = zext i16 [[TMP29]] to i64
-; CHECK-NEXT: [[TMP32:%.*]] = icmp eq i64 [[TMP30]], [[TMP31]]
-; CHECK-NEXT: br i1 [[TMP32]], label [[LOADBB3:%.*]], label [[RES_BLOCK]]
-; CHECK: loadbb3:
-; CHECK-NEXT: [[TMP33:%.*]] = getelementptr i8, i8* [[TMP0]], i8 14
-; CHECK-NEXT: [[TMP34:%.*]] = getelementptr i8, i8* [[TMP1]], i8 14
-; CHECK-NEXT: [[TMP35:%.*]] = load i8, i8* [[TMP33]]
-; CHECK-NEXT: [[TMP36:%.*]] = load i8, i8* [[TMP34]]
-; CHECK-NEXT: [[TMP37:%.*]] = zext i8 [[TMP35]] to i32
-; CHECK-NEXT: [[TMP38:%.*]] = zext i8 [[TMP36]] to i32
-; CHECK-NEXT: [[TMP39:%.*]] = sub i32 [[TMP37]], [[TMP38]]
-; CHECK-NEXT: br label [[ENDBLOCK]]
-; CHECK: endblock:
-; CHECK-NEXT: [[PHI_RES:%.*]] = phi i32 [ [[TMP39]], [[LOADBB3]] ], [ [[TMP3]], [[RES_BLOCK]] ]
-; CHECK-NEXT: ret i32 [[PHI_RES]]
-;
-; CHECK-BE-LABEL: @test3(
-; CHECK-BE-NEXT: entry:
-; CHECK-BE-NEXT: [[TMP0:%.*]] = bitcast i32* [[BUFFER1:%.*]] to i8*
-; CHECK-BE-NEXT: [[TMP1:%.*]] = bitcast i32* [[BUFFER2:%.*]] to i8*
-; CHECK-BE-NEXT: br label [[LOADBB:%.*]]
-; CHECK-BE: res_block:
-; CHECK-BE-NEXT: [[PHI_SRC1:%.*]] = phi i64 [ [[TMP6:%.*]], [[LOADBB]] ], [ [[TMP15:%.*]], [[LOADBB1:%.*]] ], [ [[TMP24:%.*]], [[LOADBB2:%.*]] ]
-; CHECK-BE-NEXT: [[PHI_SRC2:%.*]] = phi i64 [ [[TMP7:%.*]], [[LOADBB]] ], [ [[TMP16:%.*]], [[LOADBB1]] ], [ [[TMP25:%.*]], [[LOADBB2]] ]
-; CHECK-BE-NEXT: [[TMP2:%.*]] = icmp ult i64 [[PHI_SRC1]], [[PHI_SRC2]]
-; CHECK-BE-NEXT: [[TMP3:%.*]] = select i1 [[TMP2]], i32 -1, i32 1
-; CHECK-BE-NEXT: br label [[ENDBLOCK:%.*]]
-; CHECK-BE: loadbb:
-; CHECK-BE-NEXT: [[TMP4:%.*]] = bitcast i8* [[TMP0]] to i64*
-; CHECK-BE-NEXT: [[TMP5:%.*]] = bitcast i8* [[TMP1]] to i64*
-; CHECK-BE-NEXT: [[TMP6]] = load i64, i64* [[TMP4]]
-; CHECK-BE-NEXT: [[TMP7]] = load i64, i64* [[TMP5]]
-; CHECK-BE-NEXT: [[TMP8:%.*]] = icmp eq i64 [[TMP6]], [[TMP7]]
-; CHECK-BE-NEXT: br i1 [[TMP8]], label [[LOADBB1]], label [[RES_BLOCK:%.*]]
-; CHECK-BE: loadbb1:
-; CHECK-BE-NEXT: [[TMP9:%.*]] = getelementptr i8, i8* [[TMP0]], i8 8
-; CHECK-BE-NEXT: [[TMP10:%.*]] = bitcast i8* [[TMP9]] to i32*
-; CHECK-BE-NEXT: [[TMP11:%.*]] = getelementptr i8, i8* [[TMP1]], i8 8
-; CHECK-BE-NEXT: [[TMP12:%.*]] = bitcast i8* [[TMP11]] to i32*
-; CHECK-BE-NEXT: [[TMP13:%.*]] = load i32, i32* [[TMP10]]
-; CHECK-BE-NEXT: [[TMP14:%.*]] = load i32, i32* [[TMP12]]
-; CHECK-BE-NEXT: [[TMP15]] = zext i32 [[TMP13]] to i64
-; CHECK-BE-NEXT: [[TMP16]] = zext i32 [[TMP14]] to i64
-; CHECK-BE-NEXT: [[TMP17:%.*]] = icmp eq i64 [[TMP15]], [[TMP16]]
-; CHECK-BE-NEXT: br i1 [[TMP17]], label [[LOADBB2]], label [[RES_BLOCK]]
-; CHECK-BE: loadbb2:
-; CHECK-BE-NEXT: [[TMP18:%.*]] = getelementptr i8, i8* [[TMP0]], i8 12
-; CHECK-BE-NEXT: [[TMP19:%.*]] = bitcast i8* [[TMP18]] to i16*
-; CHECK-BE-NEXT: [[TMP20:%.*]] = getelementptr i8, i8* [[TMP1]], i8 12
-; CHECK-BE-NEXT: [[TMP21:%.*]] = bitcast i8* [[TMP20]] to i16*
-; CHECK-BE-NEXT: [[TMP22:%.*]] = load i16, i16* [[TMP19]]
-; CHECK-BE-NEXT: [[TMP23:%.*]] = load i16, i16* [[TMP21]]
-; CHECK-BE-NEXT: [[TMP24]] = zext i16 [[TMP22]] to i64
-; CHECK-BE-NEXT: [[TMP25]] = zext i16 [[TMP23]] to i64
-; CHECK-BE-NEXT: [[TMP26:%.*]] = icmp eq i64 [[TMP24]], [[TMP25]]
-; CHECK-BE-NEXT: br i1 [[TMP26]], label [[LOADBB3:%.*]], label [[RES_BLOCK]]
-; CHECK-BE: loadbb3:
-; CHECK-BE-NEXT: [[TMP27:%.*]] = getelementptr i8, i8* [[TMP0]], i8 14
-; CHECK-BE-NEXT: [[TMP28:%.*]] = getelementptr i8, i8* [[TMP1]], i8 14
-; CHECK-BE-NEXT: [[TMP29:%.*]] = load i8, i8* [[TMP27]]
-; CHECK-BE-NEXT: [[TMP30:%.*]] = load i8, i8* [[TMP28]]
-; CHECK-BE-NEXT: [[TMP31:%.*]] = zext i8 [[TMP29]] to i32
-; CHECK-BE-NEXT: [[TMP32:%.*]] = zext i8 [[TMP30]] to i32
-; CHECK-BE-NEXT: [[TMP33:%.*]] = sub i32 [[TMP31]], [[TMP32]]
-; CHECK-BE-NEXT: br label [[ENDBLOCK]]
-; CHECK-BE: endblock:
-; CHECK-BE-NEXT: [[PHI_RES:%.*]] = phi i32 [ [[TMP33]], [[LOADBB3]] ], [ [[TMP3]], [[RES_BLOCK]] ]
-; CHECK-BE-NEXT: ret i32 [[PHI_RES]]
-;
-entry:
- %0 = bitcast i32* %buffer1 to i8*
- %1 = bitcast i32* %buffer2 to i8*
- %call = tail call signext i32 @memcmp(i8* %0, i8* %1, i64 15)
- ret i32 %call
-}
-
-define signext i32 @test4(i32* nocapture readonly %buffer1, i32* nocapture readonly %buffer2) {
-; CHECK-LABEL: @test4(
-; CHECK-NEXT: entry:
-; CHECK-NEXT: [[TMP0:%.*]] = bitcast i32* [[BUFFER1:%.*]] to i8*
-; CHECK-NEXT: [[TMP1:%.*]] = bitcast i32* [[BUFFER2:%.*]] to i8*
-; CHECK-NEXT: [[CALL:%.*]] = tail call signext i32 @memcmp(i8* [[TMP0]], i8* [[TMP1]], i64 65)
-; CHECK-NEXT: ret i32 [[CALL]]
-;
-; CHECK-BE-LABEL: @test4(
-; CHECK-BE-NEXT: entry:
-; CHECK-BE-NEXT: [[TMP0:%.*]] = bitcast i32* [[BUFFER1:%.*]] to i8*
-; CHECK-BE-NEXT: [[TMP1:%.*]] = bitcast i32* [[BUFFER2:%.*]] to i8*
-; CHECK-BE-NEXT: [[CALL:%.*]] = tail call signext i32 @memcmp(i8* [[TMP0]], i8* [[TMP1]], i64 65)
-; CHECK-BE-NEXT: ret i32 [[CALL]]
-;
-entry:
- %0 = bitcast i32* %buffer1 to i8*
- %1 = bitcast i32* %buffer2 to i8*
- %call = tail call signext i32 @memcmp(i8* %0, i8* %1, i64 65)
- ret i32 %call
-}
-
-define signext i32 @test5(i32* nocapture readonly %buffer1, i32* nocapture readonly %buffer2, i32 signext %SIZE) {
-; CHECK-LABEL: @test5(
-; CHECK-NEXT: entry:
-; CHECK-NEXT: [[TMP0:%.*]] = bitcast i32* [[BUFFER1:%.*]] to i8*
-; CHECK-NEXT: [[TMP1:%.*]] = bitcast i32* [[BUFFER2:%.*]] to i8*
-; CHECK-NEXT: [[CONV:%.*]] = sext i32 [[SIZE:%.*]] to i64
-; CHECK-NEXT: [[CALL:%.*]] = tail call signext i32 @memcmp(i8* [[TMP0]], i8* [[TMP1]], i64 [[CONV]])
-; CHECK-NEXT: ret i32 [[CALL]]
-;
-; CHECK-BE-LABEL: @test5(
-; CHECK-BE-NEXT: entry:
-; CHECK-BE-NEXT: [[TMP0:%.*]] = bitcast i32* [[BUFFER1:%.*]] to i8*
-; CHECK-BE-NEXT: [[TMP1:%.*]] = bitcast i32* [[BUFFER2:%.*]] to i8*
-; CHECK-BE-NEXT: [[CONV:%.*]] = sext i32 [[SIZE:%.*]] to i64
-; CHECK-BE-NEXT: [[CALL:%.*]] = tail call signext i32 @memcmp(i8* [[TMP0]], i8* [[TMP1]], i64 [[CONV]])
-; CHECK-BE-NEXT: ret i32 [[CALL]]
-;
-entry:
- %0 = bitcast i32* %buffer1 to i8*
- %1 = bitcast i32* %buffer2 to i8*
- %conv = sext i32 %SIZE to i64
- %call = tail call signext i32 @memcmp(i8* %0, i8* %1, i64 %conv)
- ret i32 %call
-}
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
-; RUN: opt -S -domtree -expandmemcmp -verify-dom-info -mtriple=i686-unknown-unknown -data-layout=e-m:o-p:32:32-f64:32:64-f80:128-n8:16:32-S128 < %s | FileCheck %s --check-prefix=ALL --check-prefix=X32
-; RUN: opt -S -domtree -expandmemcmp -verify-dom-info -memcmp-num-loads-per-block=1 -mtriple=x86_64-unknown-unknown -data-layout=e-m:o-i64:64-f80:128-n8:16:32:64-S128 -mattr=+avx2 < %s | FileCheck %s --check-prefix=ALL --check-prefix=X64 --check-prefix=X64_1LD
-; RUN: opt -S -domtree -expandmemcmp -verify-dom-info -memcmp-num-loads-per-block=2 -mtriple=x86_64-unknown-unknown -data-layout=e-m:o-i64:64-f80:128-n8:16:32:64-S128 -mattr=+avx2 < %s | FileCheck %s --check-prefix=ALL --check-prefix=X64 --check-prefix=X64_2LD
+; RUN: opt -S -expandmemcmp -mtriple=i686-unknown-unknown -data-layout=e-m:o-p:32:32-f64:32:64-f80:128-n8:16:32-S128 < %s | FileCheck %s --check-prefix=ALL --check-prefix=X32
+; RUN: opt -S -expandmemcmp -memcmp-num-loads-per-block=1 -mtriple=x86_64-unknown-unknown -data-layout=e-m:o-i64:64-f80:128-n8:16:32:64-S128 < %s | FileCheck %s --check-prefix=ALL --check-prefix=X64 --check-prefix=X64_1LD
+; RUN: opt -S -expandmemcmp -memcmp-num-loads-per-block=2 -mtriple=x86_64-unknown-unknown -data-layout=e-m:o-i64:64-f80:128-n8:16:32:64-S128 < %s | FileCheck %s --check-prefix=ALL --check-prefix=X64 --check-prefix=X64_2LD
declare i32 @memcmp(i8* nocapture, i8* nocapture, i64)
ret i32 %conv
}
-define i32 @cmp_eq32(i8* nocapture readonly %x, i8* nocapture readonly %y) {
-; X32-LABEL: @cmp_eq32(
-; X32-NEXT: [[CALL:%.*]] = tail call i32 @memcmp(i8* [[X:%.*]], i8* [[Y:%.*]], i64 32)
-; X32-NEXT: [[CMP:%.*]] = icmp eq i32 [[CALL]], 0
-; X32-NEXT: [[CONV:%.*]] = zext i1 [[CMP]] to i32
-; X32-NEXT: ret i32 [[CONV]]
-;
-; X64-LABEL: @cmp_eq32(
-; X64-NEXT: [[TMP1:%.*]] = bitcast i8* [[X:%.*]] to i256*
-; X64-NEXT: [[TMP2:%.*]] = bitcast i8* [[Y:%.*]] to i256*
-; X64-NEXT: [[TMP3:%.*]] = load i256, i256* [[TMP1]]
-; X64-NEXT: [[TMP4:%.*]] = load i256, i256* [[TMP2]]
-; X64-NEXT: [[TMP5:%.*]] = icmp ne i256 [[TMP3]], [[TMP4]]
-; X64-NEXT: [[TMP6:%.*]] = zext i1 [[TMP5]] to i32
-; X64-NEXT: [[CMP:%.*]] = icmp eq i32 [[TMP6]], 0
-; X64-NEXT: [[CONV:%.*]] = zext i1 [[CMP]] to i32
-; X64-NEXT: ret i32 [[CONV]]
-;
- %call = tail call i32 @memcmp(i8* %x, i8* %y, i64 32)
- %cmp = icmp eq i32 %call, 0
- %conv = zext i1 %cmp to i32
- ret i32 %conv
-}
-
-define i32 @cmp_eq32_prefer128(i8* nocapture readonly %x, i8* nocapture readonly %y) "prefer-vector-width"="128" {
-; X32-LABEL: @cmp_eq32_prefer128(
-; X32-NEXT: [[CALL:%.*]] = tail call i32 @memcmp(i8* [[X:%.*]], i8* [[Y:%.*]], i64 32)
-; X32-NEXT: [[CMP:%.*]] = icmp eq i32 [[CALL]], 0
-; X32-NEXT: [[CONV:%.*]] = zext i1 [[CMP]] to i32
-; X32-NEXT: ret i32 [[CONV]]
-;
-; X64_1LD-LABEL: @cmp_eq32_prefer128(
-; X64_1LD-NEXT: br label [[LOADBB:%.*]]
-; X64_1LD: res_block:
-; X64_1LD-NEXT: br label [[ENDBLOCK:%.*]]
-; X64_1LD: loadbb:
-; X64_1LD-NEXT: [[TMP1:%.*]] = bitcast i8* [[X:%.*]] to i128*
-; X64_1LD-NEXT: [[TMP2:%.*]] = bitcast i8* [[Y:%.*]] to i128*
-; X64_1LD-NEXT: [[TMP3:%.*]] = load i128, i128* [[TMP1]]
-; X64_1LD-NEXT: [[TMP4:%.*]] = load i128, i128* [[TMP2]]
-; X64_1LD-NEXT: [[TMP5:%.*]] = icmp ne i128 [[TMP3]], [[TMP4]]
-; X64_1LD-NEXT: br i1 [[TMP5]], label [[RES_BLOCK:%.*]], label [[LOADBB1:%.*]]
-; X64_1LD: loadbb1:
-; X64_1LD-NEXT: [[TMP6:%.*]] = getelementptr i8, i8* [[X]], i8 16
-; X64_1LD-NEXT: [[TMP7:%.*]] = bitcast i8* [[TMP6]] to i128*
-; X64_1LD-NEXT: [[TMP8:%.*]] = getelementptr i8, i8* [[Y]], i8 16
-; X64_1LD-NEXT: [[TMP9:%.*]] = bitcast i8* [[TMP8]] to i128*
-; X64_1LD-NEXT: [[TMP10:%.*]] = load i128, i128* [[TMP7]]
-; X64_1LD-NEXT: [[TMP11:%.*]] = load i128, i128* [[TMP9]]
-; X64_1LD-NEXT: [[TMP12:%.*]] = icmp ne i128 [[TMP10]], [[TMP11]]
-; X64_1LD-NEXT: br i1 [[TMP12]], label [[RES_BLOCK]], label [[ENDBLOCK]]
-; X64_1LD: endblock:
-; X64_1LD-NEXT: [[PHI_RES:%.*]] = phi i32 [ 0, [[LOADBB1]] ], [ 1, [[RES_BLOCK]] ]
-; X64_1LD-NEXT: [[CMP:%.*]] = icmp eq i32 [[PHI_RES]], 0
-; X64_1LD-NEXT: [[CONV:%.*]] = zext i1 [[CMP]] to i32
-; X64_1LD-NEXT: ret i32 [[CONV]]
-;
-; X64_2LD-LABEL: @cmp_eq32_prefer128(
-; X64_2LD-NEXT: [[TMP1:%.*]] = bitcast i8* [[X:%.*]] to i128*
-; X64_2LD-NEXT: [[TMP2:%.*]] = bitcast i8* [[Y:%.*]] to i128*
-; X64_2LD-NEXT: [[TMP3:%.*]] = load i128, i128* [[TMP1]]
-; X64_2LD-NEXT: [[TMP4:%.*]] = load i128, i128* [[TMP2]]
-; X64_2LD-NEXT: [[TMP5:%.*]] = xor i128 [[TMP3]], [[TMP4]]
-; X64_2LD-NEXT: [[TMP6:%.*]] = getelementptr i8, i8* [[X]], i8 16
-; X64_2LD-NEXT: [[TMP7:%.*]] = bitcast i8* [[TMP6]] to i128*
-; X64_2LD-NEXT: [[TMP8:%.*]] = getelementptr i8, i8* [[Y]], i8 16
-; X64_2LD-NEXT: [[TMP9:%.*]] = bitcast i8* [[TMP8]] to i128*
-; X64_2LD-NEXT: [[TMP10:%.*]] = load i128, i128* [[TMP7]]
-; X64_2LD-NEXT: [[TMP11:%.*]] = load i128, i128* [[TMP9]]
-; X64_2LD-NEXT: [[TMP12:%.*]] = xor i128 [[TMP10]], [[TMP11]]
-; X64_2LD-NEXT: [[TMP13:%.*]] = or i128 [[TMP5]], [[TMP12]]
-; X64_2LD-NEXT: [[TMP14:%.*]] = icmp ne i128 [[TMP13]], 0
-; X64_2LD-NEXT: [[TMP15:%.*]] = zext i1 [[TMP14]] to i32
-; X64_2LD-NEXT: [[CMP:%.*]] = icmp eq i32 [[TMP15]], 0
-; X64_2LD-NEXT: [[CONV:%.*]] = zext i1 [[CMP]] to i32
-; X64_2LD-NEXT: ret i32 [[CONV]]
-;
- %call = tail call i32 @memcmp(i8* %x, i8* %y, i64 32)
- %cmp = icmp eq i32 %call, 0
- %conv = zext i1 %cmp to i32
- ret i32 %conv
-}
-
+++ /dev/null
-; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
-; RUN: opt < %s -domtree -expandmemcmp -verify-dom-info -S | FileCheck %s
-
-target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
-target triple = "x86_64-unknown-unknown"
-
-@.str = private unnamed_addr constant [7 x i8] c"abcdef\00", align 1
-@.str.1 = private unnamed_addr constant [7 x i8] c"ABCDEF\00", align 1
-
-define i32 @test(i8* nocapture readonly %string, i32 %len) local_unnamed_addr #0 {
-; CHECK-LABEL: @test(
-; CHECK-NEXT: entry:
-; CHECK-NEXT: [[COND:%.*]] = icmp eq i32 [[LEN:%.*]], 6
-; CHECK-NEXT: br i1 [[COND]], label [[SW_BB:%.*]], label [[RETURN:%.*]]
-; CHECK: sw.bb:
-; CHECK-NEXT: [[TMP0:%.*]] = bitcast i8* [[STRING:%.*]] to i32*
-; CHECK-NEXT: [[TMP1:%.*]] = load i32, i32* [[TMP0]]
-; CHECK-NEXT: [[TMP2:%.*]] = xor i32 [[TMP1]], 1684234849
-; CHECK-NEXT: [[TMP3:%.*]] = getelementptr i8, i8* [[STRING]], i8 4
-; CHECK-NEXT: [[TMP4:%.*]] = bitcast i8* [[TMP3]] to i16*
-; CHECK-NEXT: [[TMP5:%.*]] = load i16, i16* [[TMP4]]
-; CHECK-NEXT: [[TMP6:%.*]] = zext i16 [[TMP5]] to i32
-; CHECK-NEXT: [[TMP7:%.*]] = xor i32 [[TMP6]], 26213
-; CHECK-NEXT: [[TMP8:%.*]] = or i32 [[TMP2]], [[TMP7]]
-; CHECK-NEXT: [[TMP9:%.*]] = icmp ne i32 [[TMP8]], 0
-; CHECK-NEXT: [[TMP10:%.*]] = zext i1 [[TMP9]] to i32
-; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[TMP10]], 0
-; CHECK-NEXT: br i1 [[CMP]], label [[RETURN]], label [[IF_END:%.*]]
-; CHECK: if.end:
-; CHECK-NEXT: [[TMP11:%.*]] = bitcast i8* [[STRING]] to i32*
-; CHECK-NEXT: [[TMP12:%.*]] = load i32, i32* [[TMP11]]
-; CHECK-NEXT: [[TMP13:%.*]] = xor i32 [[TMP12]], 1145258561
-; CHECK-NEXT: [[TMP14:%.*]] = getelementptr i8, i8* [[STRING]], i8 4
-; CHECK-NEXT: [[TMP15:%.*]] = bitcast i8* [[TMP14]] to i16*
-; CHECK-NEXT: [[TMP16:%.*]] = load i16, i16* [[TMP15]]
-; CHECK-NEXT: [[TMP17:%.*]] = zext i16 [[TMP16]] to i32
-; CHECK-NEXT: [[TMP18:%.*]] = xor i32 [[TMP17]], 17989
-; CHECK-NEXT: [[TMP19:%.*]] = or i32 [[TMP13]], [[TMP18]]
-; CHECK-NEXT: [[TMP20:%.*]] = icmp ne i32 [[TMP19]], 0
-; CHECK-NEXT: [[TMP21:%.*]] = zext i1 [[TMP20]] to i32
-; CHECK-NEXT: [[CMP2:%.*]] = icmp eq i32 [[TMP21]], 0
-; CHECK-NEXT: [[DOT:%.*]] = select i1 [[CMP2]], i32 64, i32 0
-; CHECK-NEXT: br label [[RETURN]]
-; CHECK: return:
-; CHECK-NEXT: [[RETVAL_0:%.*]] = phi i32 [ 61, [[SW_BB]] ], [ [[DOT]], [[IF_END]] ], [ 0, [[ENTRY:%.*]] ]
-; CHECK-NEXT: ret i32 [[RETVAL_0]]
-;
-entry:
- %cond = icmp eq i32 %len, 6
- br i1 %cond, label %sw.bb, label %return
-
-sw.bb: ; preds = %entry
- %call = tail call i32 @memcmp(i8* %string, i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str, i64 0, i64 0), i64 6)
- %cmp = icmp eq i32 %call, 0
- br i1 %cmp, label %return, label %if.end
-
-if.end: ; preds = %sw.bb
- %call1 = tail call i32 @memcmp(i8* %string, i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.1, i64 0, i64 0), i64 6)
- %cmp2 = icmp eq i32 %call1, 0
- %. = select i1 %cmp2, i32 64, i32 0
- br label %return
-
-return: ; preds = %entry, %if.end8, %if.end4, %if.end, %sw.bb
- %retval.0 = phi i32 [ 61, %sw.bb ], [ %., %if.end ], [ 0, %entry ]
- ret i32 %retval.0
-}
-
-; Function Attrs: nounwind readonly
-declare i32 @memcmp(i8* nocapture, i8* nocapture, i64) local_unnamed_addr #1
-
-attributes #0 = { nounwind readonly ssp uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="penryn" "target-features"="+cx16,+fxsr,+mmx,+sse,+sse2,+sse3,+sse4.1,+ssse3,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
-attributes #1 = { nounwind readonly "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="penryn" "target-features"="+cx16,+fxsr,+mmx,+sse,+sse2,+sse3,+sse4.1,+ssse3,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
-
-!llvm.module.flags = !{!0, !1}
-!llvm.ident = !{!2}
-
-!0 = !{i32 1, !"wchar_size", i32 4}
-!1 = !{i32 7, !"PIC Level", i32 2}
-!2 = !{!"clang version 7.0.0 (trunk 325350)"}
+++ /dev/null
-if not 'PowerPC' in config.root.targets:
- config.unsupported = True
+++ /dev/null
-; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
-; RUN: opt < %s -O2 -S -mcpu=pwr8 < %s | FileCheck %s
-target datalayout = "e-m:e-i64:64-n32:64"
-target triple = "powerpc64le-unknown-linux-gnu"
-
-@zeroEqualityTest01.buffer1 = private unnamed_addr constant [3 x i32] [i32 1, i32 2, i32 4], align 4
-@zeroEqualityTest01.buffer2 = private unnamed_addr constant [3 x i32] [i32 1, i32 2, i32 3], align 4
-@zeroEqualityTest02.buffer1 = private unnamed_addr constant [4 x i32] [i32 4, i32 0, i32 0, i32 0], align 4
-@zeroEqualityTest02.buffer2 = private unnamed_addr constant [4 x i32] [i32 3, i32 0, i32 0, i32 0], align 4
-@zeroEqualityTest03.buffer1 = private unnamed_addr constant [4 x i32] [i32 0, i32 0, i32 0, i32 3], align 4
-@zeroEqualityTest03.buffer2 = private unnamed_addr constant [4 x i32] [i32 0, i32 0, i32 0, i32 4], align 4
-@zeroEqualityTest04.buffer1 = private unnamed_addr constant [15 x i32] [i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14], align 4
-@zeroEqualityTest04.buffer2 = private unnamed_addr constant [15 x i32] [i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 13], align 4
-
-declare signext i32 @memcmp(i8* nocapture, i8* nocapture, i64) local_unnamed_addr #1
-
-; Check 4 bytes - requires 1 load for each param.
-define signext i32 @zeroEqualityTest02(i8* %x, i8* %y) {
-; CHECK-LABEL: @zeroEqualityTest02(
-; CHECK-NEXT: [[TMP1:%.*]] = bitcast i8* [[X:%.*]] to i32*
-; CHECK-NEXT: [[TMP2:%.*]] = bitcast i8* [[Y:%.*]] to i32*
-; CHECK-NEXT: [[TMP3:%.*]] = load i32, i32* [[TMP1]], align 4
-; CHECK-NEXT: [[TMP4:%.*]] = load i32, i32* [[TMP2]], align 4
-; CHECK-NEXT: [[TMP5:%.*]] = icmp ne i32 [[TMP3]], [[TMP4]]
-; CHECK-NEXT: [[TMP6:%.*]] = zext i1 [[TMP5]] to i32
-; CHECK-NEXT: ret i32 [[TMP6]]
-;
- %call = tail call signext i32 @memcmp(i8* %x, i8* %y, i64 4)
- %not.cmp = icmp ne i32 %call, 0
- %. = zext i1 %not.cmp to i32
- ret i32 %.
-}
-
-; Check 16 bytes - requires 2 loads for each param (or use vectors?).
-define signext i32 @zeroEqualityTest01(i8* %x, i8* %y) {
-; CHECK-LABEL: @zeroEqualityTest01(
-; CHECK-NEXT: loadbb:
-; CHECK-NEXT: [[TMP0:%.*]] = bitcast i8* [[X:%.*]] to i64*
-; CHECK-NEXT: [[TMP1:%.*]] = bitcast i8* [[Y:%.*]] to i64*
-; CHECK-NEXT: [[TMP2:%.*]] = load i64, i64* [[TMP0]], align 8
-; CHECK-NEXT: [[TMP3:%.*]] = load i64, i64* [[TMP1]], align 8
-; CHECK-NEXT: [[TMP4:%.*]] = icmp eq i64 [[TMP2]], [[TMP3]]
-; CHECK-NEXT: br i1 [[TMP4]], label [[LOADBB1:%.*]], label [[RES_BLOCK:%.*]]
-; CHECK: res_block:
-; CHECK-NEXT: br label [[ENDBLOCK:%.*]]
-; CHECK: loadbb1:
-; CHECK-NEXT: [[TMP5:%.*]] = getelementptr i8, i8* [[X]], i64 8
-; CHECK-NEXT: [[TMP6:%.*]] = bitcast i8* [[TMP5]] to i64*
-; CHECK-NEXT: [[TMP7:%.*]] = getelementptr i8, i8* [[Y]], i64 8
-; CHECK-NEXT: [[TMP8:%.*]] = bitcast i8* [[TMP7]] to i64*
-; CHECK-NEXT: [[TMP9:%.*]] = load i64, i64* [[TMP6]], align 8
-; CHECK-NEXT: [[TMP10:%.*]] = load i64, i64* [[TMP8]], align 8
-; CHECK-NEXT: [[TMP11:%.*]] = icmp eq i64 [[TMP9]], [[TMP10]]
-; CHECK-NEXT: br i1 [[TMP11]], label [[ENDBLOCK]], label [[RES_BLOCK]]
-; CHECK: endblock:
-; CHECK-NEXT: [[PHI_RES:%.*]] = phi i32 [ 0, [[LOADBB1]] ], [ 1, [[RES_BLOCK]] ]
-; CHECK-NEXT: ret i32 [[PHI_RES]]
-;
- %call = tail call signext i32 @memcmp(i8* %x, i8* %y, i64 16)
- %not.tobool = icmp ne i32 %call, 0
- %. = zext i1 %not.tobool to i32
- ret i32 %.
-}
-
-; Check 7 bytes - requires 3 loads for each param.
-define signext i32 @zeroEqualityTest03(i8* %x, i8* %y) {
-; CHECK-LABEL: @zeroEqualityTest03(
-; CHECK-NEXT: loadbb:
-; CHECK-NEXT: [[TMP0:%.*]] = bitcast i8* [[X:%.*]] to i32*
-; CHECK-NEXT: [[TMP1:%.*]] = bitcast i8* [[Y:%.*]] to i32*
-; CHECK-NEXT: [[TMP2:%.*]] = load i32, i32* [[TMP0]], align 4
-; CHECK-NEXT: [[TMP3:%.*]] = load i32, i32* [[TMP1]], align 4
-; CHECK-NEXT: [[TMP4:%.*]] = icmp eq i32 [[TMP2]], [[TMP3]]
-; CHECK-NEXT: br i1 [[TMP4]], label [[LOADBB1:%.*]], label [[RES_BLOCK:%.*]]
-; CHECK: res_block:
-; CHECK-NEXT: br label [[ENDBLOCK:%.*]]
-; CHECK: loadbb1:
-; CHECK-NEXT: [[TMP5:%.*]] = getelementptr i8, i8* [[X]], i64 4
-; CHECK-NEXT: [[TMP6:%.*]] = bitcast i8* [[TMP5]] to i16*
-; CHECK-NEXT: [[TMP7:%.*]] = getelementptr i8, i8* [[Y]], i64 4
-; CHECK-NEXT: [[TMP8:%.*]] = bitcast i8* [[TMP7]] to i16*
-; CHECK-NEXT: [[TMP9:%.*]] = load i16, i16* [[TMP6]], align 2
-; CHECK-NEXT: [[TMP10:%.*]] = load i16, i16* [[TMP8]], align 2
-; CHECK-NEXT: [[TMP11:%.*]] = icmp eq i16 [[TMP9]], [[TMP10]]
-; CHECK-NEXT: br i1 [[TMP11]], label [[LOADBB2:%.*]], label [[RES_BLOCK]]
-; CHECK: loadbb2:
-; CHECK-NEXT: [[TMP12:%.*]] = getelementptr i8, i8* [[X]], i64 6
-; CHECK-NEXT: [[TMP13:%.*]] = getelementptr i8, i8* [[Y]], i64 6
-; CHECK-NEXT: [[TMP14:%.*]] = load i8, i8* [[TMP12]], align 1
-; CHECK-NEXT: [[TMP15:%.*]] = load i8, i8* [[TMP13]], align 1
-; CHECK-NEXT: [[TMP16:%.*]] = icmp eq i8 [[TMP14]], [[TMP15]]
-; CHECK-NEXT: br i1 [[TMP16]], label [[ENDBLOCK]], label [[RES_BLOCK]]
-; CHECK: endblock:
-; CHECK-NEXT: [[PHI_RES:%.*]] = phi i32 [ 0, [[LOADBB2]] ], [ 1, [[RES_BLOCK]] ]
-; CHECK-NEXT: ret i32 [[PHI_RES]]
-;
- %call = tail call signext i32 @memcmp(i8* %x, i8* %y, i64 7)
- %not.lnot = icmp ne i32 %call, 0
- %cond = zext i1 %not.lnot to i32
- ret i32 %cond
-}
-
-; Validate with > 0
-define signext i32 @zeroEqualityTest04() {
-; CHECK-LABEL: @zeroEqualityTest04(
-; CHECK-NEXT: loadbb:
-; CHECK-NEXT: ret i32 0
-;
- %call = tail call signext i32 @memcmp(i8* bitcast ([4 x i32]* @zeroEqualityTest02.buffer1 to i8*), i8* bitcast ([4 x i32]* @zeroEqualityTest02.buffer2 to i8*), i64 16)
- %not.cmp = icmp slt i32 %call, 1
- %. = zext i1 %not.cmp to i32
- ret i32 %.
-}
-
-; Validate with < 0
-define signext i32 @zeroEqualityTest05() {
-; CHECK-LABEL: @zeroEqualityTest05(
-; CHECK-NEXT: loadbb:
-; CHECK-NEXT: ret i32 0
-;
- %call = tail call signext i32 @memcmp(i8* bitcast ([4 x i32]* @zeroEqualityTest03.buffer1 to i8*), i8* bitcast ([4 x i32]* @zeroEqualityTest03.buffer2 to i8*), i64 16)
- %call.lobit = lshr i32 %call, 31
- %call.lobit.not = xor i32 %call.lobit, 1
- ret i32 %call.lobit.not
-}
-
-; Validate with memcmp()?:
-define signext i32 @equalityFoldTwoConstants() {
-; CHECK-LABEL: @equalityFoldTwoConstants(
-; CHECK-NEXT: loadbb:
-; CHECK-NEXT: ret i32 1
-;
- %call = tail call signext i32 @memcmp(i8* bitcast ([15 x i32]* @zeroEqualityTest04.buffer1 to i8*), i8* bitcast ([15 x i32]* @zeroEqualityTest04.buffer2 to i8*), i64 16)
- %not.tobool = icmp eq i32 %call, 0
- %cond = zext i1 %not.tobool to i32
- ret i32 %cond
-}
-
-define signext i32 @equalityFoldOneConstant(i8* %X) {
-; CHECK-LABEL: @equalityFoldOneConstant(
-; CHECK-NEXT: loadbb:
-; CHECK-NEXT: [[TMP0:%.*]] = bitcast i8* [[X:%.*]] to i64*
-; CHECK-NEXT: [[TMP1:%.*]] = load i64, i64* [[TMP0]], align 8
-; CHECK-NEXT: [[TMP2:%.*]] = icmp eq i64 [[TMP1]], 4294967296
-; CHECK-NEXT: br i1 [[TMP2]], label [[LOADBB1:%.*]], label [[RES_BLOCK:%.*]]
-; CHECK: res_block:
-; CHECK-NEXT: br label [[ENDBLOCK:%.*]]
-; CHECK: loadbb1:
-; CHECK-NEXT: [[TMP3:%.*]] = getelementptr i8, i8* [[X]], i64 8
-; CHECK-NEXT: [[TMP4:%.*]] = bitcast i8* [[TMP3]] to i64*
-; CHECK-NEXT: [[TMP5:%.*]] = load i64, i64* [[TMP4]], align 8
-; CHECK-NEXT: [[TMP6:%.*]] = icmp eq i64 [[TMP5]], 12884901890
-; CHECK-NEXT: br i1 [[TMP6]], label [[ENDBLOCK]], label [[RES_BLOCK]]
-; CHECK: endblock:
-; CHECK-NEXT: [[PHI_RES:%.*]] = phi i32 [ 1, [[LOADBB1]] ], [ 0, [[RES_BLOCK]] ]
-; CHECK-NEXT: ret i32 [[PHI_RES]]
-;
- %call = tail call signext i32 @memcmp(i8* bitcast ([15 x i32]* @zeroEqualityTest04.buffer1 to i8*), i8* %X, i64 16)
- %not.tobool = icmp eq i32 %call, 0
- %cond = zext i1 %not.tobool to i32
- ret i32 %cond
-}
-
-define i1 @length2_eq_nobuiltin_attr(i8* %X, i8* %Y) {
-; CHECK-LABEL: @length2_eq_nobuiltin_attr(
-; CHECK-NEXT: [[M:%.*]] = tail call signext i32 @memcmp(i8* [[X:%.*]], i8* [[Y:%.*]], i64 2) #2
-; CHECK-NEXT: [[C:%.*]] = icmp eq i32 [[M]], 0
-; CHECK-NEXT: ret i1 [[C]]
-;
- %m = tail call signext i32 @memcmp(i8* %X, i8* %Y, i64 2) nobuiltin
- %c = icmp eq i32 %m, 0
- ret i1 %c
-}
-
+++ /dev/null
-; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
-; RUN: opt -S -mergeicmps -expandmemcmp -mcpu=pwr8 -mtriple=powerpc64le-unknown-linux < %s | FileCheck %s --check-prefix=PPC64LE
-
-; This tests interaction between MergeICmp and ExpandMemCmp.
-
-%"struct.std::pair" = type { i32, i32 }
-
-define zeroext i1 @opeq1(
-; PPC64LE-LABEL: @opeq1(
-; PPC64LE-NEXT: "entry+land.rhs.i":
-; PPC64LE-NEXT: [[TMP0:%.*]] = getelementptr inbounds %"struct.std::pair", %"struct.std::pair"* [[A:%.*]], i64 0, i32 0
-; PPC64LE-NEXT: [[TMP1:%.*]] = getelementptr inbounds %"struct.std::pair", %"struct.std::pair"* [[B:%.*]], i64 0, i32 0
-; PPC64LE-NEXT: [[CSTR:%.*]] = bitcast i32* [[TMP0]] to i8*
-; PPC64LE-NEXT: [[CSTR1:%.*]] = bitcast i32* [[TMP1]] to i8*
-; PPC64LE-NEXT: [[TMP2:%.*]] = bitcast i8* [[CSTR]] to i64*
-; PPC64LE-NEXT: [[TMP3:%.*]] = bitcast i8* [[CSTR1]] to i64*
-; PPC64LE-NEXT: [[TMP4:%.*]] = load i64, i64* [[TMP2]]
-; PPC64LE-NEXT: [[TMP5:%.*]] = load i64, i64* [[TMP3]]
-; PPC64LE-NEXT: [[TMP6:%.*]] = icmp ne i64 [[TMP4]], [[TMP5]]
-; PPC64LE-NEXT: [[TMP7:%.*]] = zext i1 [[TMP6]] to i32
-; PPC64LE-NEXT: [[TMP8:%.*]] = icmp eq i32 [[TMP7]], 0
-; PPC64LE-NEXT: br label [[OPEQ1_EXIT:%.*]]
-; PPC64LE: opeq1.exit:
-; PPC64LE-NEXT: ret i1 [[TMP8]]
-;
- %"struct.std::pair"* nocapture readonly dereferenceable(8) %a,
- %"struct.std::pair"* nocapture readonly dereferenceable(8) %b) local_unnamed_addr #0 {
-entry:
- %first.i = getelementptr inbounds %"struct.std::pair", %"struct.std::pair"* %a, i64 0, i32 0
- %0 = load i32, i32* %first.i, align 4
- %first1.i = getelementptr inbounds %"struct.std::pair", %"struct.std::pair"* %b, i64 0, i32 0
- %1 = load i32, i32* %first1.i, align 4
- %cmp.i = icmp eq i32 %0, %1
- br i1 %cmp.i, label %land.rhs.i, label %opeq1.exit
-
-land.rhs.i:
- %second.i = getelementptr inbounds %"struct.std::pair", %"struct.std::pair"* %a, i64 0, i32 1
- %2 = load i32, i32* %second.i, align 4
- %second2.i = getelementptr inbounds %"struct.std::pair", %"struct.std::pair"* %b, i64 0, i32 1
- %3 = load i32, i32* %second2.i, align 4
- %cmp3.i = icmp eq i32 %2, %3
- br label %opeq1.exit
-
-opeq1.exit:
- %4 = phi i1 [ false, %entry ], [ %cmp3.i, %land.rhs.i ]
- ret i1 %4
-}
-
-
+++ /dev/null
-; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
-; RUN: opt < %s -O2 -S -mcpu=pwr8 -mtriple=powerpc64le-unknown-gnu-linux | FileCheck %s -check-prefix=CHECK
-
-define signext i32 @memcmp8(i32* nocapture readonly %buffer1, i32* nocapture readonly %buffer2) {
-; CHECK-LABEL: @memcmp8(
-; CHECK-NEXT: [[TMP1:%.*]] = bitcast i32* [[BUFFER1:%.*]] to i64*
-; CHECK-NEXT: [[TMP2:%.*]] = bitcast i32* [[BUFFER2:%.*]] to i64*
-; CHECK-NEXT: [[TMP3:%.*]] = load i64, i64* [[TMP1]], align 4
-; CHECK-NEXT: [[TMP4:%.*]] = load i64, i64* [[TMP2]], align 4
-; CHECK-NEXT: [[TMP5:%.*]] = call i64 @llvm.bswap.i64(i64 [[TMP3]])
-; CHECK-NEXT: [[TMP6:%.*]] = call i64 @llvm.bswap.i64(i64 [[TMP4]])
-; CHECK-NEXT: [[TMP7:%.*]] = icmp ugt i64 [[TMP5]], [[TMP6]]
-; CHECK-NEXT: [[TMP8:%.*]] = icmp ult i64 [[TMP5]], [[TMP6]]
-; CHECK-NEXT: [[TMP9:%.*]] = zext i1 [[TMP7]] to i32
-; CHECK-NEXT: [[TMP10:%.*]] = zext i1 [[TMP8]] to i32
-; CHECK-NEXT: [[TMP11:%.*]] = sub nsw i32 [[TMP9]], [[TMP10]]
-; CHECK-NEXT: ret i32 [[TMP11]]
-;
- %t0 = bitcast i32* %buffer1 to i8*
- %t1 = bitcast i32* %buffer2 to i8*
- %call = tail call signext i32 @memcmp(i8* %t0, i8* %t1, i64 8)
- ret i32 %call
-}
-
-define signext i32 @memcmp4(i32* nocapture readonly %buffer1, i32* nocapture readonly %buffer2) {
-; CHECK-LABEL: @memcmp4(
-; CHECK-NEXT: [[TMP1:%.*]] = load i32, i32* [[BUFFER1:%.*]], align 4
-; CHECK-NEXT: [[TMP2:%.*]] = load i32, i32* [[BUFFER2:%.*]], align 4
-; CHECK-NEXT: [[TMP3:%.*]] = call i32 @llvm.bswap.i32(i32 [[TMP1]])
-; CHECK-NEXT: [[TMP4:%.*]] = call i32 @llvm.bswap.i32(i32 [[TMP2]])
-; CHECK-NEXT: [[TMP5:%.*]] = icmp ugt i32 [[TMP3]], [[TMP4]]
-; CHECK-NEXT: [[TMP6:%.*]] = icmp ult i32 [[TMP3]], [[TMP4]]
-; CHECK-NEXT: [[TMP7:%.*]] = zext i1 [[TMP5]] to i32
-; CHECK-NEXT: [[TMP8:%.*]] = zext i1 [[TMP6]] to i32
-; CHECK-NEXT: [[TMP9:%.*]] = sub nsw i32 [[TMP7]], [[TMP8]]
-; CHECK-NEXT: ret i32 [[TMP9]]
-;
- %t0 = bitcast i32* %buffer1 to i8*
- %t1 = bitcast i32* %buffer2 to i8*
- %call = tail call signext i32 @memcmp(i8* %t0, i8* %t1, i64 4)
- ret i32 %call
-}
-
-define signext i32 @memcmp2(i32* nocapture readonly %buffer1, i32* nocapture readonly %buffer2) {
-; CHECK-LABEL: @memcmp2(
-; CHECK-NEXT: [[TMP1:%.*]] = bitcast i32* [[BUFFER1:%.*]] to i16*
-; CHECK-NEXT: [[TMP2:%.*]] = bitcast i32* [[BUFFER2:%.*]] to i16*
-; CHECK-NEXT: [[TMP3:%.*]] = load i16, i16* [[TMP1]], align 2
-; CHECK-NEXT: [[TMP4:%.*]] = load i16, i16* [[TMP2]], align 2
-; CHECK-NEXT: [[TMP5:%.*]] = call i16 @llvm.bswap.i16(i16 [[TMP3]])
-; CHECK-NEXT: [[TMP6:%.*]] = call i16 @llvm.bswap.i16(i16 [[TMP4]])
-; CHECK-NEXT: [[TMP7:%.*]] = zext i16 [[TMP5]] to i32
-; CHECK-NEXT: [[TMP8:%.*]] = zext i16 [[TMP6]] to i32
-; CHECK-NEXT: [[TMP9:%.*]] = sub nsw i32 [[TMP7]], [[TMP8]]
-; CHECK-NEXT: ret i32 [[TMP9]]
-;
- %t0 = bitcast i32* %buffer1 to i8*
- %t1 = bitcast i32* %buffer2 to i8*
- %call = tail call signext i32 @memcmp(i8* %t0, i8* %t1, i64 2)
- ret i32 %call
-}
-
-define signext i32 @memcmp1(i32* nocapture readonly %buffer1, i32* nocapture readonly %buffer2) {
-; CHECK-LABEL: @memcmp1(
-; CHECK-NEXT: [[T0:%.*]] = bitcast i32* [[BUFFER1:%.*]] to i8*
-; CHECK-NEXT: [[T1:%.*]] = bitcast i32* [[BUFFER2:%.*]] to i8*
-; CHECK-NEXT: [[LHSC:%.*]] = load i8, i8* [[T0]], align 1
-; CHECK-NEXT: [[LHSV:%.*]] = zext i8 [[LHSC]] to i32
-; CHECK-NEXT: [[RHSC:%.*]] = load i8, i8* [[T1]], align 1
-; CHECK-NEXT: [[RHSV:%.*]] = zext i8 [[RHSC]] to i32
-; CHECK-NEXT: [[CHARDIFF:%.*]] = sub nsw i32 [[LHSV]], [[RHSV]]
-; CHECK-NEXT: ret i32 [[CHARDIFF]]
-;
- %t0 = bitcast i32* %buffer1 to i8*
- %t1 = bitcast i32* %buffer2 to i8*
- %call = tail call signext i32 @memcmp(i8* %t0, i8* %t1, i64 1) #2
- ret i32 %call
-}
-
-declare signext i32 @memcmp(i8*, i8*, i64)
+++ /dev/null
-if not 'X86' in config.root.targets:
- config.unsupported = True
+++ /dev/null
-; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
-; RUN: opt -S -mergeicmps -expandmemcmp -mtriple=i386-unknown-linux < %s | FileCheck %s --check-prefix=X86
-; RUN: opt -S -mergeicmps -expandmemcmp -mtriple=x86_64-unknown-linux < %s | FileCheck %s --check-prefix=X64
-
-; This tests interaction between MergeICmp and ExpandMemCmp.
-
-%"struct.std::pair" = type { i32, i32 }
-
-define zeroext i1 @opeq1(
-; X86-LABEL: @opeq1(
-; X86-NEXT: "entry+land.rhs.i":
-; X86-NEXT: [[TMP0:%.*]] = getelementptr inbounds %"struct.std::pair", %"struct.std::pair"* [[A:%.*]], i64 0, i32 0
-; X86-NEXT: [[TMP1:%.*]] = getelementptr inbounds %"struct.std::pair", %"struct.std::pair"* [[B:%.*]], i64 0, i32 0
-; X86-NEXT: [[CSTR:%.*]] = bitcast i32* [[TMP0]] to i8*
-; X86-NEXT: [[CSTR1:%.*]] = bitcast i32* [[TMP1]] to i8*
-; X86-NEXT: [[TMP2:%.*]] = bitcast i8* [[CSTR]] to i32*
-; X86-NEXT: [[TMP3:%.*]] = bitcast i8* [[CSTR1]] to i32*
-; X86-NEXT: [[TMP4:%.*]] = load i32, i32* [[TMP2]]
-; X86-NEXT: [[TMP5:%.*]] = load i32, i32* [[TMP3]]
-; X86-NEXT: [[TMP6:%.*]] = xor i32 [[TMP4]], [[TMP5]]
-; X86-NEXT: [[TMP7:%.*]] = getelementptr i8, i8* [[CSTR]], i8 4
-; X86-NEXT: [[TMP8:%.*]] = bitcast i8* [[TMP7]] to i32*
-; X86-NEXT: [[TMP9:%.*]] = getelementptr i8, i8* [[CSTR1]], i8 4
-; X86-NEXT: [[TMP10:%.*]] = bitcast i8* [[TMP9]] to i32*
-; X86-NEXT: [[TMP11:%.*]] = load i32, i32* [[TMP8]]
-; X86-NEXT: [[TMP12:%.*]] = load i32, i32* [[TMP10]]
-; X86-NEXT: [[TMP13:%.*]] = xor i32 [[TMP11]], [[TMP12]]
-; X86-NEXT: [[TMP14:%.*]] = or i32 [[TMP6]], [[TMP13]]
-; X86-NEXT: [[TMP15:%.*]] = icmp ne i32 [[TMP14]], 0
-; X86-NEXT: [[TMP16:%.*]] = zext i1 [[TMP15]] to i32
-; X86-NEXT: [[TMP17:%.*]] = icmp eq i32 [[TMP16]], 0
-; X86-NEXT: br label [[OPEQ1_EXIT:%.*]]
-; X86: opeq1.exit:
-; X86-NEXT: ret i1 [[TMP17]]
-;
-; X64-LABEL: @opeq1(
-; X64-NEXT: "entry+land.rhs.i":
-; X64-NEXT: [[TMP0:%.*]] = getelementptr inbounds %"struct.std::pair", %"struct.std::pair"* [[A:%.*]], i64 0, i32 0
-; X64-NEXT: [[TMP1:%.*]] = getelementptr inbounds %"struct.std::pair", %"struct.std::pair"* [[B:%.*]], i64 0, i32 0
-; X64-NEXT: [[CSTR:%.*]] = bitcast i32* [[TMP0]] to i8*
-; X64-NEXT: [[CSTR1:%.*]] = bitcast i32* [[TMP1]] to i8*
-; X64-NEXT: [[TMP2:%.*]] = bitcast i8* [[CSTR]] to i64*
-; X64-NEXT: [[TMP3:%.*]] = bitcast i8* [[CSTR1]] to i64*
-; X64-NEXT: [[TMP4:%.*]] = load i64, i64* [[TMP2]]
-; X64-NEXT: [[TMP5:%.*]] = load i64, i64* [[TMP3]]
-; X64-NEXT: [[TMP6:%.*]] = icmp ne i64 [[TMP4]], [[TMP5]]
-; X64-NEXT: [[TMP7:%.*]] = zext i1 [[TMP6]] to i32
-; X64-NEXT: [[TMP8:%.*]] = icmp eq i32 [[TMP7]], 0
-; X64-NEXT: br label [[OPEQ1_EXIT:%.*]]
-; X64: opeq1.exit:
-; X64-NEXT: ret i1 [[TMP8]]
-;
- %"struct.std::pair"* nocapture readonly dereferenceable(8) %a,
- %"struct.std::pair"* nocapture readonly dereferenceable(8) %b) local_unnamed_addr #0 {
-entry:
- %first.i = getelementptr inbounds %"struct.std::pair", %"struct.std::pair"* %a, i64 0, i32 0
- %0 = load i32, i32* %first.i, align 4
- %first1.i = getelementptr inbounds %"struct.std::pair", %"struct.std::pair"* %b, i64 0, i32 0
- %1 = load i32, i32* %first1.i, align 4
- %cmp.i = icmp eq i32 %0, %1
- br i1 %cmp.i, label %land.rhs.i, label %opeq1.exit
-
-land.rhs.i:
- %second.i = getelementptr inbounds %"struct.std::pair", %"struct.std::pair"* %a, i64 0, i32 1
- %2 = load i32, i32* %second.i, align 4
- %second2.i = getelementptr inbounds %"struct.std::pair", %"struct.std::pair"* %b, i64 0, i32 1
- %3 = load i32, i32* %second2.i, align 4
- %cmp3.i = icmp eq i32 %2, %3
- br label %opeq1.exit
-
-opeq1.exit:
- %4 = phi i1 [ false, %entry ], [ %cmp3.i, %land.rhs.i ]
- ret i1 %4
-}
-
-
+++ /dev/null
-; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
-; RUN: opt < %s -O2 -S -mtriple=i686-unknown-unknown | FileCheck %s --check-prefix=ALL --check-prefix=X86
-; RUN: opt < %s -O2 -S -mtriple=x86_64-unknown-unknown | FileCheck %s --check-prefix=ALL --check-prefix=X64
-
-; This tests interaction between the MergeICmp and ExpandMemCmp IR transform
-; passes.
-
-target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
-
-
-@.str = private constant [65 x i8] c"0123456789012345678901234567890123456789012345678901234567890123\00", align 1
-
-declare i32 @memcmp(i8*, i8*, i64)
-declare i32 @bcmp(i8*, i8*, i64)
-
-define i32 @length0(i8* %X, i8* %Y) nounwind {
-; ALL-LABEL: @length0(
-; ALL-NEXT: ret i32 0
-;
- %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 0) nounwind
- ret i32 %m
-}
-
-define i1 @length0_eq(i8* %X, i8* %Y) nounwind {
-; ALL-LABEL: @length0_eq(
-; ALL-NEXT: ret i1 true
-;
- %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 0) nounwind
- %c = icmp eq i32 %m, 0
- ret i1 %c
-}
-
-define i1 @length0_lt(i8* %X, i8* %Y) nounwind {
-; ALL-LABEL: @length0_lt(
-; ALL-NEXT: ret i1 false
-;
- %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 0) nounwind
- %c = icmp slt i32 %m, 0
- ret i1 %c
-}
-
-define i32 @length2(i8* %X, i8* %Y) nounwind {
-; ALL-LABEL: @length2(
-; ALL-NEXT: [[TMP1:%.*]] = bitcast i8* [[X:%.*]] to i16*
-; ALL-NEXT: [[TMP2:%.*]] = bitcast i8* [[Y:%.*]] to i16*
-; ALL-NEXT: [[TMP3:%.*]] = load i16, i16* [[TMP1]], align 2
-; ALL-NEXT: [[TMP4:%.*]] = load i16, i16* [[TMP2]], align 2
-; ALL-NEXT: [[TMP5:%.*]] = call i16 @llvm.bswap.i16(i16 [[TMP3]])
-; ALL-NEXT: [[TMP6:%.*]] = call i16 @llvm.bswap.i16(i16 [[TMP4]])
-; ALL-NEXT: [[TMP7:%.*]] = zext i16 [[TMP5]] to i32
-; ALL-NEXT: [[TMP8:%.*]] = zext i16 [[TMP6]] to i32
-; ALL-NEXT: [[TMP9:%.*]] = sub nsw i32 [[TMP7]], [[TMP8]]
-; ALL-NEXT: ret i32 [[TMP9]]
-;
- %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 2) nounwind
- ret i32 %m
-}
-
-define i1 @length2_eq(i8* %X, i8* %Y) nounwind {
-; ALL-LABEL: @length2_eq(
-; ALL-NEXT: [[TMP1:%.*]] = bitcast i8* [[X:%.*]] to i16*
-; ALL-NEXT: [[TMP2:%.*]] = bitcast i8* [[Y:%.*]] to i16*
-; ALL-NEXT: [[TMP3:%.*]] = load i16, i16* [[TMP1]], align 2
-; ALL-NEXT: [[TMP4:%.*]] = load i16, i16* [[TMP2]], align 2
-; ALL-NEXT: [[TMP5:%.*]] = icmp eq i16 [[TMP3]], [[TMP4]]
-; ALL-NEXT: ret i1 [[TMP5]]
-;
- %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 2) nounwind
- %c = icmp eq i32 %m, 0
- ret i1 %c
-}
-
-define i1 @length2_lt(i8* %X, i8* %Y) nounwind {
-; ALL-LABEL: @length2_lt(
-; ALL-NEXT: [[TMP1:%.*]] = bitcast i8* [[X:%.*]] to i16*
-; ALL-NEXT: [[TMP2:%.*]] = bitcast i8* [[Y:%.*]] to i16*
-; ALL-NEXT: [[TMP3:%.*]] = load i16, i16* [[TMP1]], align 2
-; ALL-NEXT: [[TMP4:%.*]] = load i16, i16* [[TMP2]], align 2
-; ALL-NEXT: [[TMP5:%.*]] = call i16 @llvm.bswap.i16(i16 [[TMP3]])
-; ALL-NEXT: [[TMP6:%.*]] = call i16 @llvm.bswap.i16(i16 [[TMP4]])
-; ALL-NEXT: [[C:%.*]] = icmp ult i16 [[TMP5]], [[TMP6]]
-; ALL-NEXT: ret i1 [[C]]
-;
- %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 2) nounwind
- %c = icmp slt i32 %m, 0
- ret i1 %c
-}
-
-define i1 @length2_gt(i8* %X, i8* %Y) nounwind {
-; ALL-LABEL: @length2_gt(
-; ALL-NEXT: [[TMP1:%.*]] = bitcast i8* [[X:%.*]] to i16*
-; ALL-NEXT: [[TMP2:%.*]] = bitcast i8* [[Y:%.*]] to i16*
-; ALL-NEXT: [[TMP3:%.*]] = load i16, i16* [[TMP1]], align 2
-; ALL-NEXT: [[TMP4:%.*]] = load i16, i16* [[TMP2]], align 2
-; ALL-NEXT: [[TMP5:%.*]] = call i16 @llvm.bswap.i16(i16 [[TMP3]])
-; ALL-NEXT: [[TMP6:%.*]] = call i16 @llvm.bswap.i16(i16 [[TMP4]])
-; ALL-NEXT: [[C:%.*]] = icmp ugt i16 [[TMP5]], [[TMP6]]
-; ALL-NEXT: ret i1 [[C]]
-;
- %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 2) nounwind
- %c = icmp sgt i32 %m, 0
- ret i1 %c
-}
-
-define i1 @length2_eq_const(i8* %X) nounwind {
-; ALL-LABEL: @length2_eq_const(
-; ALL-NEXT: [[TMP1:%.*]] = bitcast i8* [[X:%.*]] to i16*
-; ALL-NEXT: [[TMP2:%.*]] = load i16, i16* [[TMP1]], align 2
-; ALL-NEXT: [[TMP3:%.*]] = icmp ne i16 [[TMP2]], 12849
-; ALL-NEXT: ret i1 [[TMP3]]
-;
- %m = tail call i32 @memcmp(i8* %X, i8* getelementptr inbounds ([65 x i8], [65 x i8]* @.str, i32 0, i32 1), i64 2) nounwind
- %c = icmp ne i32 %m, 0
- ret i1 %c
-}
-
-define i1 @length2_eq_nobuiltin_attr(i8* %X, i8* %Y) nounwind {
-; ALL-LABEL: @length2_eq_nobuiltin_attr(
-; ALL-NEXT: [[M:%.*]] = tail call i32 @memcmp(i8* [[X:%.*]], i8* [[Y:%.*]], i64 2) #5
-; ALL-NEXT: [[C:%.*]] = icmp eq i32 [[M]], 0
-; ALL-NEXT: ret i1 [[C]]
-;
- %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 2) nounwind nobuiltin
- %c = icmp eq i32 %m, 0
- ret i1 %c
-}
-
-define i32 @length3(i8* %X, i8* %Y) nounwind {
-; ALL-LABEL: @length3(
-; ALL-NEXT: loadbb:
-; ALL-NEXT: [[TMP0:%.*]] = bitcast i8* [[X:%.*]] to i16*
-; ALL-NEXT: [[TMP1:%.*]] = bitcast i8* [[Y:%.*]] to i16*
-; ALL-NEXT: [[TMP2:%.*]] = load i16, i16* [[TMP0]], align 2
-; ALL-NEXT: [[TMP3:%.*]] = load i16, i16* [[TMP1]], align 2
-; ALL-NEXT: [[TMP4:%.*]] = icmp eq i16 [[TMP2]], [[TMP3]]
-; ALL-NEXT: br i1 [[TMP4]], label [[LOADBB1:%.*]], label [[RES_BLOCK:%.*]]
-; ALL: res_block:
-; ALL-NEXT: [[TMP5:%.*]] = call i16 @llvm.bswap.i16(i16 [[TMP2]])
-; ALL-NEXT: [[TMP6:%.*]] = call i16 @llvm.bswap.i16(i16 [[TMP3]])
-; ALL-NEXT: [[TMP7:%.*]] = icmp ult i16 [[TMP5]], [[TMP6]]
-; ALL-NEXT: [[TMP8:%.*]] = select i1 [[TMP7]], i32 -1, i32 1
-; ALL-NEXT: br label [[ENDBLOCK:%.*]]
-; ALL: loadbb1:
-; ALL-NEXT: [[TMP9:%.*]] = getelementptr i8, i8* [[X]], i64 2
-; ALL-NEXT: [[TMP10:%.*]] = getelementptr i8, i8* [[Y]], i64 2
-; ALL-NEXT: [[TMP11:%.*]] = load i8, i8* [[TMP9]], align 1
-; ALL-NEXT: [[TMP12:%.*]] = load i8, i8* [[TMP10]], align 1
-; ALL-NEXT: [[TMP13:%.*]] = zext i8 [[TMP11]] to i32
-; ALL-NEXT: [[TMP14:%.*]] = zext i8 [[TMP12]] to i32
-; ALL-NEXT: [[TMP15:%.*]] = sub nsw i32 [[TMP13]], [[TMP14]]
-; ALL-NEXT: br label [[ENDBLOCK]]
-; ALL: endblock:
-; ALL-NEXT: [[PHI_RES:%.*]] = phi i32 [ [[TMP15]], [[LOADBB1]] ], [ [[TMP8]], [[RES_BLOCK]] ]
-; ALL-NEXT: ret i32 [[PHI_RES]]
-;
- %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 3) nounwind
- ret i32 %m
-}
-
-define i1 @length3_eq(i8* %X, i8* %Y) nounwind {
-; ALL-LABEL: @length3_eq(
-; ALL-NEXT: [[TMP1:%.*]] = bitcast i8* [[X:%.*]] to i16*
-; ALL-NEXT: [[TMP2:%.*]] = bitcast i8* [[Y:%.*]] to i16*
-; ALL-NEXT: [[TMP3:%.*]] = load i16, i16* [[TMP1]], align 2
-; ALL-NEXT: [[TMP4:%.*]] = load i16, i16* [[TMP2]], align 2
-; ALL-NEXT: [[TMP5:%.*]] = xor i16 [[TMP3]], [[TMP4]]
-; ALL-NEXT: [[TMP6:%.*]] = getelementptr i8, i8* [[X]], i64 2
-; ALL-NEXT: [[TMP7:%.*]] = getelementptr i8, i8* [[Y]], i64 2
-; ALL-NEXT: [[TMP8:%.*]] = load i8, i8* [[TMP6]], align 1
-; ALL-NEXT: [[TMP9:%.*]] = load i8, i8* [[TMP7]], align 1
-; ALL-NEXT: [[TMP10:%.*]] = xor i8 [[TMP8]], [[TMP9]]
-; ALL-NEXT: [[TMP11:%.*]] = zext i8 [[TMP10]] to i16
-; ALL-NEXT: [[TMP12:%.*]] = or i16 [[TMP5]], [[TMP11]]
-; ALL-NEXT: [[TMP13:%.*]] = icmp ne i16 [[TMP12]], 0
-; ALL-NEXT: ret i1 [[TMP13]]
-;
- %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 3) nounwind
- %c = icmp ne i32 %m, 0
- ret i1 %c
-}
-
-define i32 @length4(i8* %X, i8* %Y) nounwind {
-; ALL-LABEL: @length4(
-; ALL-NEXT: [[TMP1:%.*]] = bitcast i8* [[X:%.*]] to i32*
-; ALL-NEXT: [[TMP2:%.*]] = bitcast i8* [[Y:%.*]] to i32*
-; ALL-NEXT: [[TMP3:%.*]] = load i32, i32* [[TMP1]], align 4
-; ALL-NEXT: [[TMP4:%.*]] = load i32, i32* [[TMP2]], align 4
-; ALL-NEXT: [[TMP5:%.*]] = call i32 @llvm.bswap.i32(i32 [[TMP3]])
-; ALL-NEXT: [[TMP6:%.*]] = call i32 @llvm.bswap.i32(i32 [[TMP4]])
-; ALL-NEXT: [[TMP7:%.*]] = icmp ugt i32 [[TMP5]], [[TMP6]]
-; ALL-NEXT: [[TMP8:%.*]] = icmp ult i32 [[TMP5]], [[TMP6]]
-; ALL-NEXT: [[TMP9:%.*]] = zext i1 [[TMP7]] to i32
-; ALL-NEXT: [[TMP10:%.*]] = zext i1 [[TMP8]] to i32
-; ALL-NEXT: [[TMP11:%.*]] = sub nsw i32 [[TMP9]], [[TMP10]]
-; ALL-NEXT: ret i32 [[TMP11]]
-;
- %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 4) nounwind
- ret i32 %m
-}
-
-define i1 @length4_eq(i8* %X, i8* %Y) nounwind {
-; ALL-LABEL: @length4_eq(
-; ALL-NEXT: [[TMP1:%.*]] = bitcast i8* [[X:%.*]] to i32*
-; ALL-NEXT: [[TMP2:%.*]] = bitcast i8* [[Y:%.*]] to i32*
-; ALL-NEXT: [[TMP3:%.*]] = load i32, i32* [[TMP1]], align 4
-; ALL-NEXT: [[TMP4:%.*]] = load i32, i32* [[TMP2]], align 4
-; ALL-NEXT: [[TMP5:%.*]] = icmp ne i32 [[TMP3]], [[TMP4]]
-; ALL-NEXT: ret i1 [[TMP5]]
-;
- %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 4) nounwind
- %c = icmp ne i32 %m, 0
- ret i1 %c
-}
-
-define i1 @length4_lt(i8* %X, i8* %Y) nounwind {
-; ALL-LABEL: @length4_lt(
-; ALL-NEXT: [[TMP1:%.*]] = bitcast i8* [[X:%.*]] to i32*
-; ALL-NEXT: [[TMP2:%.*]] = bitcast i8* [[Y:%.*]] to i32*
-; ALL-NEXT: [[TMP3:%.*]] = load i32, i32* [[TMP1]], align 4
-; ALL-NEXT: [[TMP4:%.*]] = load i32, i32* [[TMP2]], align 4
-; ALL-NEXT: [[TMP5:%.*]] = call i32 @llvm.bswap.i32(i32 [[TMP3]])
-; ALL-NEXT: [[TMP6:%.*]] = call i32 @llvm.bswap.i32(i32 [[TMP4]])
-; ALL-NEXT: [[TMP7:%.*]] = icmp ult i32 [[TMP5]], [[TMP6]]
-; ALL-NEXT: ret i1 [[TMP7]]
-;
- %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 4) nounwind
- %c = icmp slt i32 %m, 0
- ret i1 %c
-}
-
-define i1 @length4_gt(i8* %X, i8* %Y) nounwind {
-; ALL-LABEL: @length4_gt(
-; ALL-NEXT: [[TMP1:%.*]] = bitcast i8* [[X:%.*]] to i32*
-; ALL-NEXT: [[TMP2:%.*]] = bitcast i8* [[Y:%.*]] to i32*
-; ALL-NEXT: [[TMP3:%.*]] = load i32, i32* [[TMP1]], align 4
-; ALL-NEXT: [[TMP4:%.*]] = load i32, i32* [[TMP2]], align 4
-; ALL-NEXT: [[TMP5:%.*]] = call i32 @llvm.bswap.i32(i32 [[TMP3]])
-; ALL-NEXT: [[TMP6:%.*]] = call i32 @llvm.bswap.i32(i32 [[TMP4]])
-; ALL-NEXT: [[TMP7:%.*]] = icmp ugt i32 [[TMP5]], [[TMP6]]
-; ALL-NEXT: ret i1 [[TMP7]]
-;
- %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 4) nounwind
- %c = icmp sgt i32 %m, 0
- ret i1 %c
-}
-
-define i1 @length4_eq_const(i8* %X) nounwind {
-; ALL-LABEL: @length4_eq_const(
-; ALL-NEXT: [[TMP1:%.*]] = bitcast i8* [[X:%.*]] to i32*
-; ALL-NEXT: [[TMP2:%.*]] = load i32, i32* [[TMP1]], align 4
-; ALL-NEXT: [[TMP3:%.*]] = icmp eq i32 [[TMP2]], 875770417
-; ALL-NEXT: ret i1 [[TMP3]]
-;
- %m = tail call i32 @memcmp(i8* %X, i8* getelementptr inbounds ([65 x i8], [65 x i8]* @.str, i32 0, i32 1), i64 4) nounwind
- %c = icmp eq i32 %m, 0
- ret i1 %c
-}
-
-define i32 @length5(i8* %X, i8* %Y) nounwind {
-; ALL-LABEL: @length5(
-; ALL-NEXT: loadbb:
-; ALL-NEXT: [[TMP0:%.*]] = bitcast i8* [[X:%.*]] to i32*
-; ALL-NEXT: [[TMP1:%.*]] = bitcast i8* [[Y:%.*]] to i32*
-; ALL-NEXT: [[TMP2:%.*]] = load i32, i32* [[TMP0]], align 4
-; ALL-NEXT: [[TMP3:%.*]] = load i32, i32* [[TMP1]], align 4
-; ALL-NEXT: [[TMP4:%.*]] = icmp eq i32 [[TMP2]], [[TMP3]]
-; ALL-NEXT: br i1 [[TMP4]], label [[LOADBB1:%.*]], label [[RES_BLOCK:%.*]]
-; ALL: res_block:
-; ALL-NEXT: [[TMP5:%.*]] = call i32 @llvm.bswap.i32(i32 [[TMP2]])
-; ALL-NEXT: [[TMP6:%.*]] = call i32 @llvm.bswap.i32(i32 [[TMP3]])
-; ALL-NEXT: [[TMP7:%.*]] = icmp ult i32 [[TMP5]], [[TMP6]]
-; ALL-NEXT: [[TMP8:%.*]] = select i1 [[TMP7]], i32 -1, i32 1
-; ALL-NEXT: br label [[ENDBLOCK:%.*]]
-; ALL: loadbb1:
-; ALL-NEXT: [[TMP9:%.*]] = getelementptr i8, i8* [[X]], i64 4
-; ALL-NEXT: [[TMP10:%.*]] = getelementptr i8, i8* [[Y]], i64 4
-; ALL-NEXT: [[TMP11:%.*]] = load i8, i8* [[TMP9]], align 1
-; ALL-NEXT: [[TMP12:%.*]] = load i8, i8* [[TMP10]], align 1
-; ALL-NEXT: [[TMP13:%.*]] = zext i8 [[TMP11]] to i32
-; ALL-NEXT: [[TMP14:%.*]] = zext i8 [[TMP12]] to i32
-; ALL-NEXT: [[TMP15:%.*]] = sub nsw i32 [[TMP13]], [[TMP14]]
-; ALL-NEXT: br label [[ENDBLOCK]]
-; ALL: endblock:
-; ALL-NEXT: [[PHI_RES:%.*]] = phi i32 [ [[TMP15]], [[LOADBB1]] ], [ [[TMP8]], [[RES_BLOCK]] ]
-; ALL-NEXT: ret i32 [[PHI_RES]]
-;
- %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 5) nounwind
- ret i32 %m
-}
-
-define i1 @length5_eq(i8* %X, i8* %Y) nounwind {
-; ALL-LABEL: @length5_eq(
-; ALL-NEXT: [[TMP1:%.*]] = bitcast i8* [[X:%.*]] to i32*
-; ALL-NEXT: [[TMP2:%.*]] = bitcast i8* [[Y:%.*]] to i32*
-; ALL-NEXT: [[TMP3:%.*]] = load i32, i32* [[TMP1]], align 4
-; ALL-NEXT: [[TMP4:%.*]] = load i32, i32* [[TMP2]], align 4
-; ALL-NEXT: [[TMP5:%.*]] = xor i32 [[TMP3]], [[TMP4]]
-; ALL-NEXT: [[TMP6:%.*]] = getelementptr i8, i8* [[X]], i64 4
-; ALL-NEXT: [[TMP7:%.*]] = getelementptr i8, i8* [[Y]], i64 4
-; ALL-NEXT: [[TMP8:%.*]] = load i8, i8* [[TMP6]], align 1
-; ALL-NEXT: [[TMP9:%.*]] = load i8, i8* [[TMP7]], align 1
-; ALL-NEXT: [[TMP10:%.*]] = xor i8 [[TMP8]], [[TMP9]]
-; ALL-NEXT: [[TMP11:%.*]] = zext i8 [[TMP10]] to i32
-; ALL-NEXT: [[TMP12:%.*]] = or i32 [[TMP5]], [[TMP11]]
-; ALL-NEXT: [[TMP13:%.*]] = icmp ne i32 [[TMP12]], 0
-; ALL-NEXT: ret i1 [[TMP13]]
-;
- %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 5) nounwind
- %c = icmp ne i32 %m, 0
- ret i1 %c
-}
-
-define i1 @length5_lt(i8* %X, i8* %Y) nounwind {
-; ALL-LABEL: @length5_lt(
-; ALL-NEXT: loadbb:
-; ALL-NEXT: [[TMP0:%.*]] = bitcast i8* [[X:%.*]] to i32*
-; ALL-NEXT: [[TMP1:%.*]] = bitcast i8* [[Y:%.*]] to i32*
-; ALL-NEXT: [[TMP2:%.*]] = load i32, i32* [[TMP0]], align 4
-; ALL-NEXT: [[TMP3:%.*]] = load i32, i32* [[TMP1]], align 4
-; ALL-NEXT: [[TMP4:%.*]] = icmp eq i32 [[TMP2]], [[TMP3]]
-; ALL-NEXT: br i1 [[TMP4]], label [[LOADBB1:%.*]], label [[RES_BLOCK:%.*]]
-; ALL: res_block:
-; ALL-NEXT: [[TMP5:%.*]] = call i32 @llvm.bswap.i32(i32 [[TMP2]])
-; ALL-NEXT: [[TMP6:%.*]] = call i32 @llvm.bswap.i32(i32 [[TMP3]])
-; ALL-NEXT: [[TMP7:%.*]] = icmp ult i32 [[TMP5]], [[TMP6]]
-; ALL-NEXT: [[TMP8:%.*]] = select i1 [[TMP7]], i32 -1, i32 1
-; ALL-NEXT: br label [[ENDBLOCK:%.*]]
-; ALL: loadbb1:
-; ALL-NEXT: [[TMP9:%.*]] = getelementptr i8, i8* [[X]], i64 4
-; ALL-NEXT: [[TMP10:%.*]] = getelementptr i8, i8* [[Y]], i64 4
-; ALL-NEXT: [[TMP11:%.*]] = load i8, i8* [[TMP9]], align 1
-; ALL-NEXT: [[TMP12:%.*]] = load i8, i8* [[TMP10]], align 1
-; ALL-NEXT: [[TMP13:%.*]] = zext i8 [[TMP11]] to i32
-; ALL-NEXT: [[TMP14:%.*]] = zext i8 [[TMP12]] to i32
-; ALL-NEXT: [[TMP15:%.*]] = sub nsw i32 [[TMP13]], [[TMP14]]
-; ALL-NEXT: br label [[ENDBLOCK]]
-; ALL: endblock:
-; ALL-NEXT: [[PHI_RES:%.*]] = phi i32 [ [[TMP15]], [[LOADBB1]] ], [ [[TMP8]], [[RES_BLOCK]] ]
-; ALL-NEXT: [[C:%.*]] = icmp slt i32 [[PHI_RES]], 0
-; ALL-NEXT: ret i1 [[C]]
-;
- %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 5) nounwind
- %c = icmp slt i32 %m, 0
- ret i1 %c
-}
-
-define i1 @length7_eq(i8* %X, i8* %Y) nounwind {
-; ALL-LABEL: @length7_eq(
-; ALL-NEXT: [[TMP1:%.*]] = bitcast i8* [[X:%.*]] to i32*
-; ALL-NEXT: [[TMP2:%.*]] = bitcast i8* [[Y:%.*]] to i32*
-; ALL-NEXT: [[TMP3:%.*]] = load i32, i32* [[TMP1]], align 4
-; ALL-NEXT: [[TMP4:%.*]] = load i32, i32* [[TMP2]], align 4
-; ALL-NEXT: [[TMP5:%.*]] = getelementptr i8, i8* [[X]], i64 3
-; ALL-NEXT: [[TMP6:%.*]] = bitcast i8* [[TMP5]] to i32*
-; ALL-NEXT: [[TMP7:%.*]] = getelementptr i8, i8* [[Y]], i64 3
-; ALL-NEXT: [[TMP8:%.*]] = bitcast i8* [[TMP7]] to i32*
-; ALL-NEXT: [[TMP9:%.*]] = load i32, i32* [[TMP6]], align 4
-; ALL-NEXT: [[TMP10:%.*]] = load i32, i32* [[TMP8]], align 4
-; ALL-NEXT: [[TMP11:%.*]] = icmp ne i32 [[TMP3]], [[TMP4]]
-; ALL-NEXT: [[TMP12:%.*]] = icmp ne i32 [[TMP9]], [[TMP10]]
-; ALL-NEXT: [[TMP13:%.*]] = or i1 [[TMP11]], [[TMP12]]
-; ALL-NEXT: ret i1 [[TMP13]]
-;
- %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 7) nounwind
- %c = icmp ne i32 %m, 0
- ret i1 %c
-}
-
-define i32 @length8(i8* %X, i8* %Y) nounwind {
-; X86-LABEL: @length8(
-; X86-NEXT: loadbb:
-; X86-NEXT: [[TMP0:%.*]] = bitcast i8* [[X:%.*]] to i32*
-; X86-NEXT: [[TMP1:%.*]] = bitcast i8* [[Y:%.*]] to i32*
-; X86-NEXT: [[TMP2:%.*]] = load i32, i32* [[TMP0]], align 4
-; X86-NEXT: [[TMP3:%.*]] = load i32, i32* [[TMP1]], align 4
-; X86-NEXT: [[TMP4:%.*]] = call i32 @llvm.bswap.i32(i32 [[TMP2]])
-; X86-NEXT: [[TMP5:%.*]] = call i32 @llvm.bswap.i32(i32 [[TMP3]])
-; X86-NEXT: [[TMP6:%.*]] = icmp eq i32 [[TMP2]], [[TMP3]]
-; X86-NEXT: br i1 [[TMP6]], label [[LOADBB1:%.*]], label [[RES_BLOCK:%.*]]
-; X86: res_block:
-; X86-NEXT: [[PHI_SRC1:%.*]] = phi i32 [ [[TMP4]], [[LOADBB:%.*]] ], [ [[TMP15:%.*]], [[LOADBB1]] ]
-; X86-NEXT: [[PHI_SRC2:%.*]] = phi i32 [ [[TMP5]], [[LOADBB]] ], [ [[TMP16:%.*]], [[LOADBB1]] ]
-; X86-NEXT: [[TMP7:%.*]] = icmp ult i32 [[PHI_SRC1]], [[PHI_SRC2]]
-; X86-NEXT: [[TMP8:%.*]] = select i1 [[TMP7]], i32 -1, i32 1
-; X86-NEXT: br label [[ENDBLOCK:%.*]]
-; X86: loadbb1:
-; X86-NEXT: [[TMP9:%.*]] = getelementptr i8, i8* [[X]], i64 4
-; X86-NEXT: [[TMP10:%.*]] = bitcast i8* [[TMP9]] to i32*
-; X86-NEXT: [[TMP11:%.*]] = getelementptr i8, i8* [[Y]], i64 4
-; X86-NEXT: [[TMP12:%.*]] = bitcast i8* [[TMP11]] to i32*
-; X86-NEXT: [[TMP13:%.*]] = load i32, i32* [[TMP10]], align 4
-; X86-NEXT: [[TMP14:%.*]] = load i32, i32* [[TMP12]], align 4
-; X86-NEXT: [[TMP15]] = call i32 @llvm.bswap.i32(i32 [[TMP13]])
-; X86-NEXT: [[TMP16]] = call i32 @llvm.bswap.i32(i32 [[TMP14]])
-; X86-NEXT: [[TMP17:%.*]] = icmp eq i32 [[TMP13]], [[TMP14]]
-; X86-NEXT: br i1 [[TMP17]], label [[ENDBLOCK]], label [[RES_BLOCK]]
-; X86: endblock:
-; X86-NEXT: [[PHI_RES:%.*]] = phi i32 [ 0, [[LOADBB1]] ], [ [[TMP8]], [[RES_BLOCK]] ]
-; X86-NEXT: ret i32 [[PHI_RES]]
-;
-; X64-LABEL: @length8(
-; X64-NEXT: [[TMP1:%.*]] = bitcast i8* [[X:%.*]] to i64*
-; X64-NEXT: [[TMP2:%.*]] = bitcast i8* [[Y:%.*]] to i64*
-; X64-NEXT: [[TMP3:%.*]] = load i64, i64* [[TMP1]], align 8
-; X64-NEXT: [[TMP4:%.*]] = load i64, i64* [[TMP2]], align 8
-; X64-NEXT: [[TMP5:%.*]] = call i64 @llvm.bswap.i64(i64 [[TMP3]])
-; X64-NEXT: [[TMP6:%.*]] = call i64 @llvm.bswap.i64(i64 [[TMP4]])
-; X64-NEXT: [[TMP7:%.*]] = icmp ugt i64 [[TMP5]], [[TMP6]]
-; X64-NEXT: [[TMP8:%.*]] = icmp ult i64 [[TMP5]], [[TMP6]]
-; X64-NEXT: [[TMP9:%.*]] = zext i1 [[TMP7]] to i32
-; X64-NEXT: [[TMP10:%.*]] = zext i1 [[TMP8]] to i32
-; X64-NEXT: [[TMP11:%.*]] = sub nsw i32 [[TMP9]], [[TMP10]]
-; X64-NEXT: ret i32 [[TMP11]]
-;
- %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 8) nounwind
- ret i32 %m
-}
-
-define i1 @length8_eq(i8* %X, i8* %Y) nounwind {
-; X86-LABEL: @length8_eq(
-; X86-NEXT: [[TMP1:%.*]] = bitcast i8* [[X:%.*]] to i32*
-; X86-NEXT: [[TMP2:%.*]] = bitcast i8* [[Y:%.*]] to i32*
-; X86-NEXT: [[TMP3:%.*]] = load i32, i32* [[TMP1]], align 4
-; X86-NEXT: [[TMP4:%.*]] = load i32, i32* [[TMP2]], align 4
-; X86-NEXT: [[TMP5:%.*]] = getelementptr i8, i8* [[X]], i64 4
-; X86-NEXT: [[TMP6:%.*]] = bitcast i8* [[TMP5]] to i32*
-; X86-NEXT: [[TMP7:%.*]] = getelementptr i8, i8* [[Y]], i64 4
-; X86-NEXT: [[TMP8:%.*]] = bitcast i8* [[TMP7]] to i32*
-; X86-NEXT: [[TMP9:%.*]] = load i32, i32* [[TMP6]], align 4
-; X86-NEXT: [[TMP10:%.*]] = load i32, i32* [[TMP8]], align 4
-; X86-NEXT: [[TMP11:%.*]] = icmp eq i32 [[TMP3]], [[TMP4]]
-; X86-NEXT: [[TMP12:%.*]] = icmp eq i32 [[TMP9]], [[TMP10]]
-; X86-NEXT: [[C:%.*]] = and i1 [[TMP12]], [[TMP11]]
-; X86-NEXT: ret i1 [[C]]
-;
-; X64-LABEL: @length8_eq(
-; X64-NEXT: [[TMP1:%.*]] = bitcast i8* [[X:%.*]] to i64*
-; X64-NEXT: [[TMP2:%.*]] = bitcast i8* [[Y:%.*]] to i64*
-; X64-NEXT: [[TMP3:%.*]] = load i64, i64* [[TMP1]], align 8
-; X64-NEXT: [[TMP4:%.*]] = load i64, i64* [[TMP2]], align 8
-; X64-NEXT: [[TMP5:%.*]] = icmp eq i64 [[TMP3]], [[TMP4]]
-; X64-NEXT: ret i1 [[TMP5]]
-;
- %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 8) nounwind
- %c = icmp eq i32 %m, 0
- ret i1 %c
-}
-
-define i1 @length8_eq_const(i8* %X) nounwind {
-; X86-LABEL: @length8_eq_const(
-; X86-NEXT: [[TMP1:%.*]] = bitcast i8* [[X:%.*]] to i32*
-; X86-NEXT: [[TMP2:%.*]] = load i32, i32* [[TMP1]], align 4
-; X86-NEXT: [[TMP3:%.*]] = getelementptr i8, i8* [[X]], i64 4
-; X86-NEXT: [[TMP4:%.*]] = bitcast i8* [[TMP3]] to i32*
-; X86-NEXT: [[TMP5:%.*]] = load i32, i32* [[TMP4]], align 4
-; X86-NEXT: [[TMP6:%.*]] = icmp ne i32 [[TMP2]], 858927408
-; X86-NEXT: [[TMP7:%.*]] = icmp ne i32 [[TMP5]], 926299444
-; X86-NEXT: [[TMP8:%.*]] = or i1 [[TMP6]], [[TMP7]]
-; X86-NEXT: ret i1 [[TMP8]]
-;
-; X64-LABEL: @length8_eq_const(
-; X64-NEXT: [[TMP1:%.*]] = bitcast i8* [[X:%.*]] to i64*
-; X64-NEXT: [[TMP2:%.*]] = load i64, i64* [[TMP1]], align 8
-; X64-NEXT: [[TMP3:%.*]] = icmp ne i64 [[TMP2]], 3978425819141910832
-; X64-NEXT: ret i1 [[TMP3]]
-;
- %m = tail call i32 @memcmp(i8* %X, i8* getelementptr inbounds ([65 x i8], [65 x i8]* @.str, i32 0, i32 0), i64 8) nounwind
- %c = icmp ne i32 %m, 0
- ret i1 %c
-}
-
-define i1 @length9_eq(i8* %X, i8* %Y) nounwind {
-; X86-LABEL: @length9_eq(
-; X86-NEXT: [[M:%.*]] = tail call i32 @memcmp(i8* dereferenceable(9) [[X:%.*]], i8* dereferenceable(9) [[Y:%.*]], i64 9) #3
-; X86-NEXT: [[C:%.*]] = icmp eq i32 [[M]], 0
-; X86-NEXT: ret i1 [[C]]
-;
-; X64-LABEL: @length9_eq(
-; X64-NEXT: [[TMP1:%.*]] = bitcast i8* [[X:%.*]] to i64*
-; X64-NEXT: [[TMP2:%.*]] = bitcast i8* [[Y:%.*]] to i64*
-; X64-NEXT: [[TMP3:%.*]] = load i64, i64* [[TMP1]], align 8
-; X64-NEXT: [[TMP4:%.*]] = load i64, i64* [[TMP2]], align 8
-; X64-NEXT: [[TMP5:%.*]] = xor i64 [[TMP3]], [[TMP4]]
-; X64-NEXT: [[TMP6:%.*]] = getelementptr i8, i8* [[X]], i64 8
-; X64-NEXT: [[TMP7:%.*]] = getelementptr i8, i8* [[Y]], i64 8
-; X64-NEXT: [[TMP8:%.*]] = load i8, i8* [[TMP6]], align 1
-; X64-NEXT: [[TMP9:%.*]] = load i8, i8* [[TMP7]], align 1
-; X64-NEXT: [[TMP10:%.*]] = xor i8 [[TMP8]], [[TMP9]]
-; X64-NEXT: [[TMP11:%.*]] = zext i8 [[TMP10]] to i64
-; X64-NEXT: [[TMP12:%.*]] = or i64 [[TMP5]], [[TMP11]]
-; X64-NEXT: [[TMP13:%.*]] = icmp eq i64 [[TMP12]], 0
-; X64-NEXT: ret i1 [[TMP13]]
-;
- %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 9) nounwind
- %c = icmp eq i32 %m, 0
- ret i1 %c
-}
-
-define i1 @length10_eq(i8* %X, i8* %Y) nounwind {
-; X86-LABEL: @length10_eq(
-; X86-NEXT: [[M:%.*]] = tail call i32 @memcmp(i8* dereferenceable(10) [[X:%.*]], i8* dereferenceable(10) [[Y:%.*]], i64 10) #3
-; X86-NEXT: [[C:%.*]] = icmp eq i32 [[M]], 0
-; X86-NEXT: ret i1 [[C]]
-;
-; X64-LABEL: @length10_eq(
-; X64-NEXT: [[TMP1:%.*]] = bitcast i8* [[X:%.*]] to i64*
-; X64-NEXT: [[TMP2:%.*]] = bitcast i8* [[Y:%.*]] to i64*
-; X64-NEXT: [[TMP3:%.*]] = load i64, i64* [[TMP1]], align 8
-; X64-NEXT: [[TMP4:%.*]] = load i64, i64* [[TMP2]], align 8
-; X64-NEXT: [[TMP5:%.*]] = xor i64 [[TMP3]], [[TMP4]]
-; X64-NEXT: [[TMP6:%.*]] = getelementptr i8, i8* [[X]], i64 8
-; X64-NEXT: [[TMP7:%.*]] = bitcast i8* [[TMP6]] to i16*
-; X64-NEXT: [[TMP8:%.*]] = getelementptr i8, i8* [[Y]], i64 8
-; X64-NEXT: [[TMP9:%.*]] = bitcast i8* [[TMP8]] to i16*
-; X64-NEXT: [[TMP10:%.*]] = load i16, i16* [[TMP7]], align 2
-; X64-NEXT: [[TMP11:%.*]] = load i16, i16* [[TMP9]], align 2
-; X64-NEXT: [[TMP12:%.*]] = xor i16 [[TMP10]], [[TMP11]]
-; X64-NEXT: [[TMP13:%.*]] = zext i16 [[TMP12]] to i64
-; X64-NEXT: [[TMP14:%.*]] = or i64 [[TMP5]], [[TMP13]]
-; X64-NEXT: [[TMP15:%.*]] = icmp eq i64 [[TMP14]], 0
-; X64-NEXT: ret i1 [[TMP15]]
-;
- %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 10) nounwind
- %c = icmp eq i32 %m, 0
- ret i1 %c
-}
-
-define i1 @length11_eq(i8* %X, i8* %Y) nounwind {
-; X86-LABEL: @length11_eq(
-; X86-NEXT: [[M:%.*]] = tail call i32 @memcmp(i8* dereferenceable(11) [[X:%.*]], i8* dereferenceable(11) [[Y:%.*]], i64 11) #3
-; X86-NEXT: [[C:%.*]] = icmp eq i32 [[M]], 0
-; X86-NEXT: ret i1 [[C]]
-;
-; X64-LABEL: @length11_eq(
-; X64-NEXT: [[TMP1:%.*]] = bitcast i8* [[X:%.*]] to i64*
-; X64-NEXT: [[TMP2:%.*]] = bitcast i8* [[Y:%.*]] to i64*
-; X64-NEXT: [[TMP3:%.*]] = load i64, i64* [[TMP1]], align 8
-; X64-NEXT: [[TMP4:%.*]] = load i64, i64* [[TMP2]], align 8
-; X64-NEXT: [[TMP5:%.*]] = getelementptr i8, i8* [[X]], i64 3
-; X64-NEXT: [[TMP6:%.*]] = bitcast i8* [[TMP5]] to i64*
-; X64-NEXT: [[TMP7:%.*]] = getelementptr i8, i8* [[Y]], i64 3
-; X64-NEXT: [[TMP8:%.*]] = bitcast i8* [[TMP7]] to i64*
-; X64-NEXT: [[TMP9:%.*]] = load i64, i64* [[TMP6]], align 8
-; X64-NEXT: [[TMP10:%.*]] = load i64, i64* [[TMP8]], align 8
-; X64-NEXT: [[TMP11:%.*]] = icmp eq i64 [[TMP3]], [[TMP4]]
-; X64-NEXT: [[TMP12:%.*]] = icmp eq i64 [[TMP9]], [[TMP10]]
-; X64-NEXT: [[C:%.*]] = and i1 [[TMP12]], [[TMP11]]
-; X64-NEXT: ret i1 [[C]]
-;
- %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 11) nounwind
- %c = icmp eq i32 %m, 0
- ret i1 %c
-}
-
-define i1 @length12_eq(i8* %X, i8* %Y) nounwind {
-; X86-LABEL: @length12_eq(
-; X86-NEXT: [[M:%.*]] = tail call i32 @memcmp(i8* dereferenceable(12) [[X:%.*]], i8* dereferenceable(12) [[Y:%.*]], i64 12) #3
-; X86-NEXT: [[C:%.*]] = icmp ne i32 [[M]], 0
-; X86-NEXT: ret i1 [[C]]
-;
-; X64-LABEL: @length12_eq(
-; X64-NEXT: [[TMP1:%.*]] = bitcast i8* [[X:%.*]] to i64*
-; X64-NEXT: [[TMP2:%.*]] = bitcast i8* [[Y:%.*]] to i64*
-; X64-NEXT: [[TMP3:%.*]] = load i64, i64* [[TMP1]], align 8
-; X64-NEXT: [[TMP4:%.*]] = load i64, i64* [[TMP2]], align 8
-; X64-NEXT: [[TMP5:%.*]] = xor i64 [[TMP3]], [[TMP4]]
-; X64-NEXT: [[TMP6:%.*]] = getelementptr i8, i8* [[X]], i64 8
-; X64-NEXT: [[TMP7:%.*]] = bitcast i8* [[TMP6]] to i32*
-; X64-NEXT: [[TMP8:%.*]] = getelementptr i8, i8* [[Y]], i64 8
-; X64-NEXT: [[TMP9:%.*]] = bitcast i8* [[TMP8]] to i32*
-; X64-NEXT: [[TMP10:%.*]] = load i32, i32* [[TMP7]], align 4
-; X64-NEXT: [[TMP11:%.*]] = load i32, i32* [[TMP9]], align 4
-; X64-NEXT: [[TMP12:%.*]] = xor i32 [[TMP10]], [[TMP11]]
-; X64-NEXT: [[TMP13:%.*]] = zext i32 [[TMP12]] to i64
-; X64-NEXT: [[TMP14:%.*]] = or i64 [[TMP5]], [[TMP13]]
-; X64-NEXT: [[TMP15:%.*]] = icmp ne i64 [[TMP14]], 0
-; X64-NEXT: ret i1 [[TMP15]]
-;
- %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 12) nounwind
- %c = icmp ne i32 %m, 0
- ret i1 %c
-}
-
-define i32 @length12(i8* %X, i8* %Y) nounwind {
-; X86-LABEL: @length12(
-; X86-NEXT: [[M:%.*]] = tail call i32 @memcmp(i8* dereferenceable(12) [[X:%.*]], i8* dereferenceable(12) [[Y:%.*]], i64 12) #3
-; X86-NEXT: ret i32 [[M]]
-;
-; X64-LABEL: @length12(
-; X64-NEXT: loadbb:
-; X64-NEXT: [[TMP0:%.*]] = bitcast i8* [[X:%.*]] to i64*
-; X64-NEXT: [[TMP1:%.*]] = bitcast i8* [[Y:%.*]] to i64*
-; X64-NEXT: [[TMP2:%.*]] = load i64, i64* [[TMP0]], align 8
-; X64-NEXT: [[TMP3:%.*]] = load i64, i64* [[TMP1]], align 8
-; X64-NEXT: [[TMP4:%.*]] = call i64 @llvm.bswap.i64(i64 [[TMP2]])
-; X64-NEXT: [[TMP5:%.*]] = call i64 @llvm.bswap.i64(i64 [[TMP3]])
-; X64-NEXT: [[TMP6:%.*]] = icmp eq i64 [[TMP2]], [[TMP3]]
-; X64-NEXT: br i1 [[TMP6]], label [[LOADBB1:%.*]], label [[RES_BLOCK:%.*]]
-; X64: res_block:
-; X64-NEXT: [[PHI_SRC1:%.*]] = phi i64 [ [[TMP4]], [[LOADBB:%.*]] ], [ [[TMP17:%.*]], [[LOADBB1]] ]
-; X64-NEXT: [[PHI_SRC2:%.*]] = phi i64 [ [[TMP5]], [[LOADBB]] ], [ [[TMP18:%.*]], [[LOADBB1]] ]
-; X64-NEXT: [[TMP7:%.*]] = icmp ult i64 [[PHI_SRC1]], [[PHI_SRC2]]
-; X64-NEXT: [[TMP8:%.*]] = select i1 [[TMP7]], i32 -1, i32 1
-; X64-NEXT: br label [[ENDBLOCK:%.*]]
-; X64: loadbb1:
-; X64-NEXT: [[TMP9:%.*]] = getelementptr i8, i8* [[X]], i64 8
-; X64-NEXT: [[TMP10:%.*]] = bitcast i8* [[TMP9]] to i32*
-; X64-NEXT: [[TMP11:%.*]] = getelementptr i8, i8* [[Y]], i64 8
-; X64-NEXT: [[TMP12:%.*]] = bitcast i8* [[TMP11]] to i32*
-; X64-NEXT: [[TMP13:%.*]] = load i32, i32* [[TMP10]], align 4
-; X64-NEXT: [[TMP14:%.*]] = load i32, i32* [[TMP12]], align 4
-; X64-NEXT: [[TMP15:%.*]] = call i32 @llvm.bswap.i32(i32 [[TMP13]])
-; X64-NEXT: [[TMP16:%.*]] = call i32 @llvm.bswap.i32(i32 [[TMP14]])
-; X64-NEXT: [[TMP17]] = zext i32 [[TMP15]] to i64
-; X64-NEXT: [[TMP18]] = zext i32 [[TMP16]] to i64
-; X64-NEXT: [[TMP19:%.*]] = icmp eq i32 [[TMP13]], [[TMP14]]
-; X64-NEXT: br i1 [[TMP19]], label [[ENDBLOCK]], label [[RES_BLOCK]]
-; X64: endblock:
-; X64-NEXT: [[PHI_RES:%.*]] = phi i32 [ 0, [[LOADBB1]] ], [ [[TMP8]], [[RES_BLOCK]] ]
-; X64-NEXT: ret i32 [[PHI_RES]]
-;
- %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 12) nounwind
- ret i32 %m
-}
-
-define i1 @length13_eq(i8* %X, i8* %Y) nounwind {
-; X86-LABEL: @length13_eq(
-; X86-NEXT: [[M:%.*]] = tail call i32 @memcmp(i8* dereferenceable(13) [[X:%.*]], i8* dereferenceable(13) [[Y:%.*]], i64 13) #3
-; X86-NEXT: [[C:%.*]] = icmp eq i32 [[M]], 0
-; X86-NEXT: ret i1 [[C]]
-;
-; X64-LABEL: @length13_eq(
-; X64-NEXT: [[TMP1:%.*]] = bitcast i8* [[X:%.*]] to i64*
-; X64-NEXT: [[TMP2:%.*]] = bitcast i8* [[Y:%.*]] to i64*
-; X64-NEXT: [[TMP3:%.*]] = load i64, i64* [[TMP1]], align 8
-; X64-NEXT: [[TMP4:%.*]] = load i64, i64* [[TMP2]], align 8
-; X64-NEXT: [[TMP5:%.*]] = getelementptr i8, i8* [[X]], i64 5
-; X64-NEXT: [[TMP6:%.*]] = bitcast i8* [[TMP5]] to i64*
-; X64-NEXT: [[TMP7:%.*]] = getelementptr i8, i8* [[Y]], i64 5
-; X64-NEXT: [[TMP8:%.*]] = bitcast i8* [[TMP7]] to i64*
-; X64-NEXT: [[TMP9:%.*]] = load i64, i64* [[TMP6]], align 8
-; X64-NEXT: [[TMP10:%.*]] = load i64, i64* [[TMP8]], align 8
-; X64-NEXT: [[TMP11:%.*]] = icmp eq i64 [[TMP3]], [[TMP4]]
-; X64-NEXT: [[TMP12:%.*]] = icmp eq i64 [[TMP9]], [[TMP10]]
-; X64-NEXT: [[C:%.*]] = and i1 [[TMP12]], [[TMP11]]
-; X64-NEXT: ret i1 [[C]]
-;
- %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 13) nounwind
- %c = icmp eq i32 %m, 0
- ret i1 %c
-}
-
-define i1 @length14_eq(i8* %X, i8* %Y) nounwind {
-; X86-LABEL: @length14_eq(
-; X86-NEXT: [[M:%.*]] = tail call i32 @memcmp(i8* dereferenceable(14) [[X:%.*]], i8* dereferenceable(14) [[Y:%.*]], i64 14) #3
-; X86-NEXT: [[C:%.*]] = icmp eq i32 [[M]], 0
-; X86-NEXT: ret i1 [[C]]
-;
-; X64-LABEL: @length14_eq(
-; X64-NEXT: [[TMP1:%.*]] = bitcast i8* [[X:%.*]] to i64*
-; X64-NEXT: [[TMP2:%.*]] = bitcast i8* [[Y:%.*]] to i64*
-; X64-NEXT: [[TMP3:%.*]] = load i64, i64* [[TMP1]], align 8
-; X64-NEXT: [[TMP4:%.*]] = load i64, i64* [[TMP2]], align 8
-; X64-NEXT: [[TMP5:%.*]] = getelementptr i8, i8* [[X]], i64 6
-; X64-NEXT: [[TMP6:%.*]] = bitcast i8* [[TMP5]] to i64*
-; X64-NEXT: [[TMP7:%.*]] = getelementptr i8, i8* [[Y]], i64 6
-; X64-NEXT: [[TMP8:%.*]] = bitcast i8* [[TMP7]] to i64*
-; X64-NEXT: [[TMP9:%.*]] = load i64, i64* [[TMP6]], align 8
-; X64-NEXT: [[TMP10:%.*]] = load i64, i64* [[TMP8]], align 8
-; X64-NEXT: [[TMP11:%.*]] = icmp eq i64 [[TMP3]], [[TMP4]]
-; X64-NEXT: [[TMP12:%.*]] = icmp eq i64 [[TMP9]], [[TMP10]]
-; X64-NEXT: [[C:%.*]] = and i1 [[TMP12]], [[TMP11]]
-; X64-NEXT: ret i1 [[C]]
-;
- %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 14) nounwind
- %c = icmp eq i32 %m, 0
- ret i1 %c
-}
-
-define i1 @length15_eq(i8* %X, i8* %Y) nounwind {
-; X86-LABEL: @length15_eq(
-; X86-NEXT: [[M:%.*]] = tail call i32 @memcmp(i8* dereferenceable(15) [[X:%.*]], i8* dereferenceable(15) [[Y:%.*]], i64 15) #3
-; X86-NEXT: [[C:%.*]] = icmp eq i32 [[M]], 0
-; X86-NEXT: ret i1 [[C]]
-;
-; X64-LABEL: @length15_eq(
-; X64-NEXT: [[TMP1:%.*]] = bitcast i8* [[X:%.*]] to i64*
-; X64-NEXT: [[TMP2:%.*]] = bitcast i8* [[Y:%.*]] to i64*
-; X64-NEXT: [[TMP3:%.*]] = load i64, i64* [[TMP1]], align 8
-; X64-NEXT: [[TMP4:%.*]] = load i64, i64* [[TMP2]], align 8
-; X64-NEXT: [[TMP5:%.*]] = getelementptr i8, i8* [[X]], i64 7
-; X64-NEXT: [[TMP6:%.*]] = bitcast i8* [[TMP5]] to i64*
-; X64-NEXT: [[TMP7:%.*]] = getelementptr i8, i8* [[Y]], i64 7
-; X64-NEXT: [[TMP8:%.*]] = bitcast i8* [[TMP7]] to i64*
-; X64-NEXT: [[TMP9:%.*]] = load i64, i64* [[TMP6]], align 8
-; X64-NEXT: [[TMP10:%.*]] = load i64, i64* [[TMP8]], align 8
-; X64-NEXT: [[TMP11:%.*]] = icmp eq i64 [[TMP3]], [[TMP4]]
-; X64-NEXT: [[TMP12:%.*]] = icmp eq i64 [[TMP9]], [[TMP10]]
-; X64-NEXT: [[C:%.*]] = and i1 [[TMP12]], [[TMP11]]
-; X64-NEXT: ret i1 [[C]]
-;
- %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 15) nounwind
- %c = icmp eq i32 %m, 0
- ret i1 %c
-}
-
-; PR33329 - https://bugs.llvm.org/show_bug.cgi?id=33329
-
-define i32 @length16(i8* %X, i8* %Y) nounwind {
-; X86-LABEL: @length16(
-; X86-NEXT: [[M:%.*]] = tail call i32 @memcmp(i8* dereferenceable(16) [[X:%.*]], i8* dereferenceable(16) [[Y:%.*]], i64 16) #3
-; X86-NEXT: ret i32 [[M]]
-;
-; X64-LABEL: @length16(
-; X64-NEXT: loadbb:
-; X64-NEXT: [[TMP0:%.*]] = bitcast i8* [[X:%.*]] to i64*
-; X64-NEXT: [[TMP1:%.*]] = bitcast i8* [[Y:%.*]] to i64*
-; X64-NEXT: [[TMP2:%.*]] = load i64, i64* [[TMP0]], align 8
-; X64-NEXT: [[TMP3:%.*]] = load i64, i64* [[TMP1]], align 8
-; X64-NEXT: [[TMP4:%.*]] = call i64 @llvm.bswap.i64(i64 [[TMP2]])
-; X64-NEXT: [[TMP5:%.*]] = call i64 @llvm.bswap.i64(i64 [[TMP3]])
-; X64-NEXT: [[TMP6:%.*]] = icmp eq i64 [[TMP2]], [[TMP3]]
-; X64-NEXT: br i1 [[TMP6]], label [[LOADBB1:%.*]], label [[RES_BLOCK:%.*]]
-; X64: res_block:
-; X64-NEXT: [[PHI_SRC1:%.*]] = phi i64 [ [[TMP4]], [[LOADBB:%.*]] ], [ [[TMP15:%.*]], [[LOADBB1]] ]
-; X64-NEXT: [[PHI_SRC2:%.*]] = phi i64 [ [[TMP5]], [[LOADBB]] ], [ [[TMP16:%.*]], [[LOADBB1]] ]
-; X64-NEXT: [[TMP7:%.*]] = icmp ult i64 [[PHI_SRC1]], [[PHI_SRC2]]
-; X64-NEXT: [[TMP8:%.*]] = select i1 [[TMP7]], i32 -1, i32 1
-; X64-NEXT: br label [[ENDBLOCK:%.*]]
-; X64: loadbb1:
-; X64-NEXT: [[TMP9:%.*]] = getelementptr i8, i8* [[X]], i64 8
-; X64-NEXT: [[TMP10:%.*]] = bitcast i8* [[TMP9]] to i64*
-; X64-NEXT: [[TMP11:%.*]] = getelementptr i8, i8* [[Y]], i64 8
-; X64-NEXT: [[TMP12:%.*]] = bitcast i8* [[TMP11]] to i64*
-; X64-NEXT: [[TMP13:%.*]] = load i64, i64* [[TMP10]], align 8
-; X64-NEXT: [[TMP14:%.*]] = load i64, i64* [[TMP12]], align 8
-; X64-NEXT: [[TMP15]] = call i64 @llvm.bswap.i64(i64 [[TMP13]])
-; X64-NEXT: [[TMP16]] = call i64 @llvm.bswap.i64(i64 [[TMP14]])
-; X64-NEXT: [[TMP17:%.*]] = icmp eq i64 [[TMP13]], [[TMP14]]
-; X64-NEXT: br i1 [[TMP17]], label [[ENDBLOCK]], label [[RES_BLOCK]]
-; X64: endblock:
-; X64-NEXT: [[PHI_RES:%.*]] = phi i32 [ 0, [[LOADBB1]] ], [ [[TMP8]], [[RES_BLOCK]] ]
-; X64-NEXT: ret i32 [[PHI_RES]]
-;
- %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 16) nounwind
- ret i32 %m
-}
-
-define i1 @length16_eq(i8* %x, i8* %y) nounwind {
-; X86-LABEL: @length16_eq(
-; X86-NEXT: [[CALL:%.*]] = tail call i32 @memcmp(i8* dereferenceable(16) [[X:%.*]], i8* dereferenceable(16) [[Y:%.*]], i64 16) #3
-; X86-NEXT: [[CMP:%.*]] = icmp ne i32 [[CALL]], 0
-; X86-NEXT: ret i1 [[CMP]]
-;
-; X64-LABEL: @length16_eq(
-; X64-NEXT: [[TMP1:%.*]] = bitcast i8* [[X:%.*]] to i128*
-; X64-NEXT: [[TMP2:%.*]] = bitcast i8* [[Y:%.*]] to i128*
-; X64-NEXT: [[TMP3:%.*]] = load i128, i128* [[TMP1]], align 8
-; X64-NEXT: [[TMP4:%.*]] = load i128, i128* [[TMP2]], align 8
-; X64-NEXT: [[TMP5:%.*]] = icmp ne i128 [[TMP3]], [[TMP4]]
-; X64-NEXT: ret i1 [[TMP5]]
-;
- %call = tail call i32 @memcmp(i8* %x, i8* %y, i64 16) nounwind
- %cmp = icmp ne i32 %call, 0
- ret i1 %cmp
-}
-
-define i1 @length16_eq_const(i8* %X) nounwind {
-; X86-LABEL: @length16_eq_const(
-; X86-NEXT: [[M:%.*]] = tail call i32 @memcmp(i8* dereferenceable(16) [[X:%.*]], i8* dereferenceable(16) getelementptr inbounds ([65 x i8], [65 x i8]* @.str, i64 0, i64 0), i64 16) #3
-; X86-NEXT: [[C:%.*]] = icmp eq i32 [[M]], 0
-; X86-NEXT: ret i1 [[C]]
-;
-; X64-LABEL: @length16_eq_const(
-; X64-NEXT: [[TMP1:%.*]] = bitcast i8* [[X:%.*]] to i128*
-; X64-NEXT: [[TMP2:%.*]] = load i128, i128* [[TMP1]], align 8
-; X64-NEXT: [[TMP3:%.*]] = icmp eq i128 [[TMP2]], 70720121592765328381466889075544961328
-; X64-NEXT: ret i1 [[TMP3]]
-;
- %m = tail call i32 @memcmp(i8* %X, i8* getelementptr inbounds ([65 x i8], [65 x i8]* @.str, i32 0, i32 0), i64 16) nounwind
- %c = icmp eq i32 %m, 0
- ret i1 %c
-}
-
-; PR33914 - https://bugs.llvm.org/show_bug.cgi?id=33914
-
-define i32 @length24(i8* %X, i8* %Y) nounwind {
-; ALL-LABEL: @length24(
-; ALL-NEXT: [[M:%.*]] = tail call i32 @memcmp(i8* dereferenceable(24) [[X:%.*]], i8* dereferenceable(24) [[Y:%.*]], i64 24) #3
-; ALL-NEXT: ret i32 [[M]]
-;
- %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 24) nounwind
- ret i32 %m
-}
-
-define i1 @length24_eq(i8* %x, i8* %y) nounwind {
-; X86-LABEL: @length24_eq(
-; X86-NEXT: [[CALL:%.*]] = tail call i32 @memcmp(i8* dereferenceable(24) [[X:%.*]], i8* dereferenceable(24) [[Y:%.*]], i64 24) #3
-; X86-NEXT: [[CMP:%.*]] = icmp eq i32 [[CALL]], 0
-; X86-NEXT: ret i1 [[CMP]]
-;
-; X64-LABEL: @length24_eq(
-; X64-NEXT: [[TMP1:%.*]] = bitcast i8* [[X:%.*]] to i128*
-; X64-NEXT: [[TMP2:%.*]] = bitcast i8* [[Y:%.*]] to i128*
-; X64-NEXT: [[TMP3:%.*]] = load i128, i128* [[TMP1]], align 8
-; X64-NEXT: [[TMP4:%.*]] = load i128, i128* [[TMP2]], align 8
-; X64-NEXT: [[TMP5:%.*]] = xor i128 [[TMP3]], [[TMP4]]
-; X64-NEXT: [[TMP6:%.*]] = getelementptr i8, i8* [[X]], i64 16
-; X64-NEXT: [[TMP7:%.*]] = bitcast i8* [[TMP6]] to i64*
-; X64-NEXT: [[TMP8:%.*]] = getelementptr i8, i8* [[Y]], i64 16
-; X64-NEXT: [[TMP9:%.*]] = bitcast i8* [[TMP8]] to i64*
-; X64-NEXT: [[TMP10:%.*]] = load i64, i64* [[TMP7]], align 8
-; X64-NEXT: [[TMP11:%.*]] = load i64, i64* [[TMP9]], align 8
-; X64-NEXT: [[TMP12:%.*]] = xor i64 [[TMP10]], [[TMP11]]
-; X64-NEXT: [[TMP13:%.*]] = zext i64 [[TMP12]] to i128
-; X64-NEXT: [[TMP14:%.*]] = or i128 [[TMP5]], [[TMP13]]
-; X64-NEXT: [[TMP15:%.*]] = icmp eq i128 [[TMP14]], 0
-; X64-NEXT: ret i1 [[TMP15]]
-;
- %call = tail call i32 @memcmp(i8* %x, i8* %y, i64 24) nounwind
- %cmp = icmp eq i32 %call, 0
- ret i1 %cmp
-}
-
-define i1 @length24_eq_const(i8* %X) nounwind {
-; X86-LABEL: @length24_eq_const(
-; X86-NEXT: [[M:%.*]] = tail call i32 @memcmp(i8* dereferenceable(24) [[X:%.*]], i8* dereferenceable(24) getelementptr inbounds ([65 x i8], [65 x i8]* @.str, i64 0, i64 0), i64 24) #3
-; X86-NEXT: [[C:%.*]] = icmp ne i32 [[M]], 0
-; X86-NEXT: ret i1 [[C]]
-;
-; X64-LABEL: @length24_eq_const(
-; X64-NEXT: [[TMP1:%.*]] = bitcast i8* [[X:%.*]] to i128*
-; X64-NEXT: [[TMP2:%.*]] = load i128, i128* [[TMP1]], align 8
-; X64-NEXT: [[TMP3:%.*]] = xor i128 [[TMP2]], 70720121592765328381466889075544961328
-; X64-NEXT: [[TMP4:%.*]] = getelementptr i8, i8* [[X]], i64 16
-; X64-NEXT: [[TMP5:%.*]] = bitcast i8* [[TMP4]] to i64*
-; X64-NEXT: [[TMP6:%.*]] = load i64, i64* [[TMP5]], align 8
-; X64-NEXT: [[TMP7:%.*]] = xor i64 [[TMP6]], 3689065127958034230
-; X64-NEXT: [[TMP8:%.*]] = zext i64 [[TMP7]] to i128
-; X64-NEXT: [[TMP9:%.*]] = or i128 [[TMP3]], [[TMP8]]
-; X64-NEXT: [[TMP10:%.*]] = icmp ne i128 [[TMP9]], 0
-; X64-NEXT: ret i1 [[TMP10]]
-;
- %m = tail call i32 @memcmp(i8* %X, i8* getelementptr inbounds ([65 x i8], [65 x i8]* @.str, i32 0, i32 0), i64 24) nounwind
- %c = icmp ne i32 %m, 0
- ret i1 %c
-}
-
-define i32 @length32(i8* %X, i8* %Y) nounwind {
-; ALL-LABEL: @length32(
-; ALL-NEXT: [[M:%.*]] = tail call i32 @memcmp(i8* dereferenceable(32) [[X:%.*]], i8* dereferenceable(32) [[Y:%.*]], i64 32) #3
-; ALL-NEXT: ret i32 [[M]]
-;
- %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 32) nounwind
- ret i32 %m
-}
-
-; PR33325 - https://bugs.llvm.org/show_bug.cgi?id=33325
-
-define i1 @length32_eq(i8* %x, i8* %y) nounwind {
-; X86-LABEL: @length32_eq(
-; X86-NEXT: [[CALL:%.*]] = tail call i32 @memcmp(i8* dereferenceable(32) [[X:%.*]], i8* dereferenceable(32) [[Y:%.*]], i64 32) #3
-; X86-NEXT: [[CMP:%.*]] = icmp eq i32 [[CALL]], 0
-; X86-NEXT: ret i1 [[CMP]]
-;
-; X64-LABEL: @length32_eq(
-; X64-NEXT: [[TMP1:%.*]] = bitcast i8* [[X:%.*]] to i128*
-; X64-NEXT: [[TMP2:%.*]] = bitcast i8* [[Y:%.*]] to i128*
-; X64-NEXT: [[TMP3:%.*]] = load i128, i128* [[TMP1]], align 8
-; X64-NEXT: [[TMP4:%.*]] = load i128, i128* [[TMP2]], align 8
-; X64-NEXT: [[TMP5:%.*]] = getelementptr i8, i8* [[X]], i64 16
-; X64-NEXT: [[TMP6:%.*]] = bitcast i8* [[TMP5]] to i128*
-; X64-NEXT: [[TMP7:%.*]] = getelementptr i8, i8* [[Y]], i64 16
-; X64-NEXT: [[TMP8:%.*]] = bitcast i8* [[TMP7]] to i128*
-; X64-NEXT: [[TMP9:%.*]] = load i128, i128* [[TMP6]], align 8
-; X64-NEXT: [[TMP10:%.*]] = load i128, i128* [[TMP8]], align 8
-; X64-NEXT: [[TMP11:%.*]] = icmp eq i128 [[TMP3]], [[TMP4]]
-; X64-NEXT: [[TMP12:%.*]] = icmp eq i128 [[TMP9]], [[TMP10]]
-; X64-NEXT: [[CMP:%.*]] = and i1 [[TMP12]], [[TMP11]]
-; X64-NEXT: ret i1 [[CMP]]
-;
- %call = tail call i32 @memcmp(i8* %x, i8* %y, i64 32) nounwind
- %cmp = icmp eq i32 %call, 0
- ret i1 %cmp
-}
-
-define i1 @length32_eq_const(i8* %X) nounwind {
-; X86-LABEL: @length32_eq_const(
-; X86-NEXT: [[M:%.*]] = tail call i32 @memcmp(i8* dereferenceable(32) [[X:%.*]], i8* dereferenceable(32) getelementptr inbounds ([65 x i8], [65 x i8]* @.str, i64 0, i64 0), i64 32) #3
-; X86-NEXT: [[C:%.*]] = icmp ne i32 [[M]], 0
-; X86-NEXT: ret i1 [[C]]
-;
-; X64-LABEL: @length32_eq_const(
-; X64-NEXT: [[TMP1:%.*]] = bitcast i8* [[X:%.*]] to i128*
-; X64-NEXT: [[TMP2:%.*]] = load i128, i128* [[TMP1]], align 8
-; X64-NEXT: [[TMP3:%.*]] = getelementptr i8, i8* [[X]], i64 16
-; X64-NEXT: [[TMP4:%.*]] = bitcast i8* [[TMP3]] to i128*
-; X64-NEXT: [[TMP5:%.*]] = load i128, i128* [[TMP4]], align 8
-; X64-NEXT: [[TMP6:%.*]] = icmp ne i128 [[TMP2]], 70720121592765328381466889075544961328
-; X64-NEXT: [[TMP7:%.*]] = icmp ne i128 [[TMP5]], 65382562593882267225249597816672106294
-; X64-NEXT: [[TMP8:%.*]] = or i1 [[TMP6]], [[TMP7]]
-; X64-NEXT: ret i1 [[TMP8]]
-;
- %m = tail call i32 @memcmp(i8* %X, i8* getelementptr inbounds ([65 x i8], [65 x i8]* @.str, i32 0, i32 0), i64 32) nounwind
- %c = icmp ne i32 %m, 0
- ret i1 %c
-}
-
-define i32 @length64(i8* %X, i8* %Y) nounwind {
-; ALL-LABEL: @length64(
-; ALL-NEXT: [[M:%.*]] = tail call i32 @memcmp(i8* dereferenceable(64) [[X:%.*]], i8* dereferenceable(64) [[Y:%.*]], i64 64) #3
-; ALL-NEXT: ret i32 [[M]]
-;
- %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 64) nounwind
- ret i32 %m
-}
-
-define i1 @length64_eq(i8* %x, i8* %y) nounwind {
-; ALL-LABEL: @length64_eq(
-; ALL-NEXT: [[CALL:%.*]] = tail call i32 @memcmp(i8* dereferenceable(64) [[X:%.*]], i8* dereferenceable(64) [[Y:%.*]], i64 64) #3
-; ALL-NEXT: [[CMP:%.*]] = icmp ne i32 [[CALL]], 0
-; ALL-NEXT: ret i1 [[CMP]]
-;
- %call = tail call i32 @memcmp(i8* %x, i8* %y, i64 64) nounwind
- %cmp = icmp ne i32 %call, 0
- ret i1 %cmp
-}
-
-define i1 @length64_eq_const(i8* %X) nounwind {
-; ALL-LABEL: @length64_eq_const(
-; ALL-NEXT: [[M:%.*]] = tail call i32 @memcmp(i8* dereferenceable(64) [[X:%.*]], i8* dereferenceable(64) getelementptr inbounds ([65 x i8], [65 x i8]* @.str, i64 0, i64 0), i64 64) #3
-; ALL-NEXT: [[C:%.*]] = icmp eq i32 [[M]], 0
-; ALL-NEXT: ret i1 [[C]]
-;
- %m = tail call i32 @memcmp(i8* %X, i8* getelementptr inbounds ([65 x i8], [65 x i8]* @.str, i32 0, i32 0), i64 64) nounwind
- %c = icmp eq i32 %m, 0
- ret i1 %c
-}
-
-; This checks that we do not do stupid things with huge sizes.
-define i32 @huge_length(i8* %X, i8* %Y) nounwind {
-; ALL-LABEL: @huge_length(
-; ALL-NEXT: [[M:%.*]] = tail call i32 @memcmp(i8* dereferenceable(9223372036854775807) [[X:%.*]], i8* dereferenceable(9223372036854775807) [[Y:%.*]], i64 9223372036854775807) #3
-; ALL-NEXT: ret i32 [[M]]
-;
- %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 9223372036854775807) nounwind
- ret i32 %m
-}
-
-define i1 @huge_length_eq(i8* %X, i8* %Y) nounwind {
-; ALL-LABEL: @huge_length_eq(
-; ALL-NEXT: [[M:%.*]] = tail call i32 @memcmp(i8* dereferenceable(9223372036854775807) [[X:%.*]], i8* dereferenceable(9223372036854775807) [[Y:%.*]], i64 9223372036854775807) #3
-; ALL-NEXT: [[C:%.*]] = icmp eq i32 [[M]], 0
-; ALL-NEXT: ret i1 [[C]]
-;
- %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 9223372036854775807) nounwind
- %c = icmp eq i32 %m, 0
- ret i1 %c
-}
-
-; This checks non-constant sizes.
-define i32 @nonconst_length(i8* %X, i8* %Y, i64 %size) nounwind {
-; ALL-LABEL: @nonconst_length(
-; ALL-NEXT: [[M:%.*]] = tail call i32 @memcmp(i8* [[X:%.*]], i8* [[Y:%.*]], i64 [[SIZE:%.*]]) #3
-; ALL-NEXT: ret i32 [[M]]
-;
- %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 %size) nounwind
- ret i32 %m
-}
-
-define i1 @nonconst_length_eq(i8* %X, i8* %Y, i64 %size) nounwind {
-; ALL-LABEL: @nonconst_length_eq(
-; ALL-NEXT: [[M:%.*]] = tail call i32 @memcmp(i8* [[X:%.*]], i8* [[Y:%.*]], i64 [[SIZE:%.*]]) #3
-; ALL-NEXT: [[C:%.*]] = icmp eq i32 [[M]], 0
-; ALL-NEXT: ret i1 [[C]]
-;
- %m = tail call i32 @memcmp(i8* %X, i8* %Y, i64 %size) nounwind
- %c = icmp eq i32 %m, 0
- ret i1 %c
-}
-
-define i1 @bcmp_length2(i8* %X, i8* %Y) nounwind {
-; ALL-LABEL: @bcmp_length2(
-; ALL-NEXT: [[TMP1:%.*]] = bitcast i8* [[X:%.*]] to i16*
-; ALL-NEXT: [[TMP2:%.*]] = bitcast i8* [[Y:%.*]] to i16*
-; ALL-NEXT: [[TMP3:%.*]] = load i16, i16* [[TMP1]], align 2
-; ALL-NEXT: [[TMP4:%.*]] = load i16, i16* [[TMP2]], align 2
-; ALL-NEXT: [[TMP5:%.*]] = icmp eq i16 [[TMP3]], [[TMP4]]
-; ALL-NEXT: ret i1 [[TMP5]]
-;
- %m = tail call i32 @bcmp(i8* %X, i8* %Y, i64 2) nounwind
- %c = icmp eq i32 %m, 0
- ret i1 %c
-}
-
+++ /dev/null
-; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
-; RUN: opt < %s -O2 -S | FileCheck %s
-
-target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
-target triple = "x86_64-unknown-unknown"
-
-@.str = private unnamed_addr constant [7 x i8] c"abcdef\00", align 1
-@.str.1 = private unnamed_addr constant [7 x i8] c"ABCDEF\00", align 1
-
-define i32 @test(i8* nocapture readonly %string, i32 %len) local_unnamed_addr #0 {
-; CHECK-LABEL: @test(
-; CHECK-NEXT: entry:
-; CHECK-NEXT: [[COND:%.*]] = icmp eq i32 [[LEN:%.*]], 6
-; CHECK-NEXT: br i1 [[COND]], label [[SW_BB:%.*]], label [[RETURN:%.*]]
-; CHECK: sw.bb:
-; CHECK-NEXT: [[TMP0:%.*]] = bitcast i8* [[STRING:%.*]] to i32*
-; CHECK-NEXT: [[TMP1:%.*]] = load i32, i32* [[TMP0]], align 4
-; CHECK-NEXT: [[TMP2:%.*]] = getelementptr i8, i8* [[STRING]], i64 4
-; CHECK-NEXT: [[TMP3:%.*]] = bitcast i8* [[TMP2]] to i16*
-; CHECK-NEXT: [[TMP4:%.*]] = load i16, i16* [[TMP3]], align 2
-; CHECK-NEXT: [[TMP5:%.*]] = icmp eq i32 [[TMP1]], 1684234849
-; CHECK-NEXT: [[TMP6:%.*]] = icmp eq i16 [[TMP4]], 26213
-; CHECK-NEXT: [[CMP:%.*]] = and i1 [[TMP6]], [[TMP5]]
-; CHECK-NEXT: br i1 [[CMP]], label [[RETURN]], label [[IF_END:%.*]]
-; CHECK: if.end:
-; CHECK-NEXT: [[TMP7:%.*]] = xor i32 [[TMP1]], 1145258561
-; CHECK-NEXT: [[TMP8:%.*]] = xor i16 [[TMP4]], 17989
-; CHECK-NEXT: [[TMP9:%.*]] = zext i16 [[TMP8]] to i32
-; CHECK-NEXT: [[TMP10:%.*]] = or i32 [[TMP7]], [[TMP9]]
-; CHECK-NEXT: [[TMP11:%.*]] = icmp eq i32 [[TMP10]], 0
-; CHECK-NEXT: [[DOT:%.*]] = select i1 [[TMP11]], i32 64, i32 0
-; CHECK-NEXT: br label [[RETURN]]
-; CHECK: return:
-; CHECK-NEXT: [[RETVAL_0:%.*]] = phi i32 [ 61, [[SW_BB]] ], [ [[DOT]], [[IF_END]] ], [ 0, [[ENTRY:%.*]] ]
-; CHECK-NEXT: ret i32 [[RETVAL_0]]
-;
-entry:
- %cond = icmp eq i32 %len, 6
- br i1 %cond, label %sw.bb, label %return
-
-sw.bb: ; preds = %entry
- %call = tail call i32 @memcmp(i8* %string, i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str, i64 0, i64 0), i64 6)
- %cmp = icmp eq i32 %call, 0
- br i1 %cmp, label %return, label %if.end
-
-if.end: ; preds = %sw.bb
- %call1 = tail call i32 @memcmp(i8* %string, i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.1, i64 0, i64 0), i64 6)
- %cmp2 = icmp eq i32 %call1, 0
- %. = select i1 %cmp2, i32 64, i32 0
- br label %return
-
-return: ; preds = %entry, %if.end8, %if.end4, %if.end, %sw.bb
- %retval.0 = phi i32 [ 61, %sw.bb ], [ %., %if.end ], [ 0, %entry ]
- ret i32 %retval.0
-}
-
-; Function Attrs: nounwind readonly
-declare i32 @memcmp(i8* nocapture, i8* nocapture, i64) local_unnamed_addr #1
-
-attributes #0 = { nounwind readonly ssp uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="penryn" "target-features"="+cx16,+fxsr,+mmx,+sse,+sse2,+sse3,+sse4.1,+ssse3,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
-attributes #1 = { nounwind readonly "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="penryn" "target-features"="+cx16,+fxsr,+mmx,+sse,+sse2,+sse3,+sse4.1,+ssse3,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
-
-!llvm.module.flags = !{!0, !1}
-!llvm.ident = !{!2}
-
-!0 = !{i32 1, !"wchar_size", i32 4}
-!1 = !{i32 7, !"PIC Level", i32 2}
-!2 = !{!"clang version 7.0.0 (trunk 325350)"}
initializeTarget(Registry);
// For codegen passes, only passes that do IR to IR transformation are
// supported.
+ initializeExpandMemCmpPassPass(Registry);
initializeScalarizeMaskedMemIntrinPass(Registry);
initializeCodeGenPreparePass(Registry);
initializeAtomicExpandPass(Registry);
"EarlyIfConversion.cpp",
"EdgeBundles.cpp",
"ExecutionDomainFix.cpp",
+ "ExpandMemCmp.cpp",
"ExpandPostRAPseudos.cpp",
"ExpandReductions.cpp",
"FEntryInserter.cpp",
"DeadStoreElimination.cpp",
"DivRemPairs.cpp",
"EarlyCSE.cpp",
- "ExpandMemCmp.cpp",
"FlattenCFGPass.cpp",
"Float2Int.cpp",
"GVN.cpp",
projects / platform / upstream / llvm.git / commitdiff