#include "llvm/Support/raw_ostream.h"
#include "llvm/Transforms/Scalar.h"
#include "llvm/Transforms/Scalar/GVNExpression.h"
+#include "llvm/Transforms/Utils/AssumeBundleBuilder.h"
#include "llvm/Transforms/Utils/Local.h"
#include "llvm/Transforms/Utils/PredicateInfo.h"
#include "llvm/Transforms/Utils/VNCoercion.h"
AliasAnalysis *AA = nullptr;
MemorySSA *MSSA = nullptr;
MemorySSAWalker *MSSAWalker = nullptr;
+ AssumptionCache *AC = nullptr;
const DataLayout &DL;
std::unique_ptr<PredicateInfo> PredInfo;
NewGVN(Function &F, DominatorTree *DT, AssumptionCache *AC,
TargetLibraryInfo *TLI, AliasAnalysis *AA, MemorySSA *MSSA,
const DataLayout &DL)
- : F(F), DT(DT), TLI(TLI), AA(AA), MSSA(MSSA), DL(DL),
+ : F(F), DT(DT), TLI(TLI), AA(AA), MSSA(MSSA), AC(AC), DL(DL),
PredInfo(std::make_unique<PredicateInfo>(F, *DT, *AC)),
SQ(DL, TLI, DT, AC, /*CtxI=*/nullptr, /*UseInstrInfo=*/false) {}
Inst.replaceAllUsesWith(UndefValue::get(Inst.getType()));
if (isa<LandingPadInst>(Inst))
continue;
+ salvageKnowledge(&Inst, AC);
Inst.eraseFromParent();
++NumGVNInstrDeleted;
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
-; RUN: opt < %s -newgvn -S | FileCheck %s
+; RUN: opt < %s -newgvn -S | FileCheck %s --check-prefixes=CHECK,NO_ASSUME
+; RUN: opt < %s -newgvn --enable-knowledge-retention -S | FileCheck %s --check-prefixes=CHECK,USE_ASSUME
%struct..0anon = type { i32 }
%struct.FILE = type { i8*, i32, i32, i16, i16, %struct.__sbuf, i32, i8*, i32 (i8*)*, i32 (i8*, i8*, i32)*, i64 (i8*, i64, i32)*, i32 (i8*, i8*, i32)*, %struct.__sbuf, %struct.__sFILEX*, i32, [3 x i8], [1 x i8], %struct.__sbuf, i32, i64 }
@n_spills = external global i32 ; <i32*> [#uses=2]
define i32 @reload(%struct.rtx_def* %first, i32 %global, %struct.FILE* %dumpfile) {
-; CHECK-LABEL: @reload(
-; CHECK-NEXT: cond_next2835.1:
-; CHECK-NEXT: br label [[BB2928:%.*]]
-; CHECK: bb2928:
-; CHECK-NEXT: br i1 false, label [[COND_NEXT2943:%.*]], label [[COND_TRUE2935:%.*]]
-; CHECK: cond_true2935:
-; CHECK-NEXT: br label [[COND_NEXT2943]]
-; CHECK: cond_next2943:
-; CHECK-NEXT: br i1 false, label [[BB2982_PREHEADER:%.*]], label [[BB2928]]
-; CHECK: bb2982.preheader:
-; CHECK-NEXT: store i8 undef, i8* null
-; CHECK-NEXT: ret i32 undef
+; NO_ASSUME-LABEL: @reload(
+; NO_ASSUME-NEXT: cond_next2835.1:
+; NO_ASSUME-NEXT: br label [[BB2928:%.*]]
+; NO_ASSUME: bb2928:
+; NO_ASSUME-NEXT: br i1 false, label [[COND_NEXT2943:%.*]], label [[COND_TRUE2935:%.*]]
+; NO_ASSUME: cond_true2935:
+; NO_ASSUME-NEXT: br label [[COND_NEXT2943]]
+; NO_ASSUME: cond_next2943:
+; NO_ASSUME-NEXT: br i1 false, label [[BB2982_PREHEADER:%.*]], label [[BB2928]]
+; NO_ASSUME: bb2982.preheader:
+; NO_ASSUME-NEXT: store i8 undef, i8* null
+; NO_ASSUME-NEXT: ret i32 undef
+;
+; USE_ASSUME-LABEL: @reload(
+; USE_ASSUME-NEXT: cond_next2835.1:
+; USE_ASSUME-NEXT: br label [[BB2928:%.*]]
+; USE_ASSUME: bb2928:
+; USE_ASSUME-NEXT: br i1 false, label [[COND_NEXT2943:%.*]], label [[COND_TRUE2935:%.*]]
+; USE_ASSUME: cond_true2935:
+; USE_ASSUME-NEXT: br label [[COND_NEXT2943]]
+; USE_ASSUME: cond_next2943:
+; USE_ASSUME-NEXT: br i1 false, label [[BB2982_PREHEADER:%.*]], label [[BB2928]]
+; USE_ASSUME: bb2982.preheader:
+; USE_ASSUME-NEXT: call void @llvm.assume(i1 true) [ "align"(i32* @n_spills, i64 4), "dereferenceable"(i32* @n_spills, i64 4), "nonnull"(i32* @n_spills) ]
+; USE_ASSUME-NEXT: store i8 undef, i8* null
+; USE_ASSUME-NEXT: ret i32 undef
;
cond_next2835.1: ; preds = %cond_next2861
%tmp2922 = load i32, i32* @n_spills, align 4 ; <i32> [#uses=0]