AliasAnalysis *AA = nullptr;
RegisterClassInfo RegClassInfo;
- /// Position and VReg of a PHI instruction during coalescing.
- struct PHIValPos {
- SlotIndex SI; ///< Slot where this PHI occurs.
- Register Reg; ///< VReg the PHI occurs in.
- unsigned SubReg; ///< Qualifying subregister for Reg.
- };
-
- /// Map from debug instruction number to PHI position during coalescing.
- DenseMap<unsigned, PHIValPos> PHIValToPos;
- /// Index of, for each VReg, which debug instruction numbers and
- /// corresponding PHIs are sensitive to coalescing. Each VReg may have
- /// multiple PHI defs, at different positions.
- DenseMap<Register, SmallVector<unsigned, 2>> RegToPHIIdx;
-
/// Debug variable location tracking -- for each VReg, maintain an
/// ordered-by-slot-index set of DBG_VALUEs, to help quick
/// identification of whether coalescing may change location validity.
// Scan and mark undef any DBG_VALUEs that would refer to a different value.
checkMergingChangesDbgValues(CP, LHS, LHSVals, RHS, RHSVals);
- // If the RHS covers any PHI locations that were tracked for debug-info, we
- // must update tracking information to reflect the join.
- auto RegIt = RegToPHIIdx.find(CP.getSrcReg());
- if (RegIt != RegToPHIIdx.end()) {
- // Iterate over all the debug instruction numbers assigned this register.
- for (unsigned InstID : RegIt->second) {
- auto PHIIt = PHIValToPos.find(InstID);
- assert(PHIIt != PHIValToPos.end());
- const SlotIndex &SI = PHIIt->second.SI;
-
- // Does the RHS cover the position of this PHI?
- auto LII = RHS.find(SI);
- if (LII == RHS.end() || LII->start > SI)
- continue;
-
- // Accept two kinds of subregister movement:
- // * When we merge from one register class into a larger register:
- // %1:gr16 = some-inst
- // ->
- // %2:gr32.sub_16bit = some-inst
- // * When the PHI is already in a subregister, and the larger class
- // is coalesced:
- // %2:gr32.sub_16bit = some-inst
- // %3:gr32 = COPY %2
- // ->
- // %3:gr32.sub_16bit = some-inst
- // Test for subregister move:
- if (CP.getSrcIdx() != 0 || CP.getDstIdx() != 0)
- // If we're moving between different subregisters, ignore this join.
- // The PHI will not get a location, dropping variable locations.
- if (PHIIt->second.SubReg && PHIIt->second.SubReg != CP.getSrcIdx())
- continue;
-
- // Update our tracking of where the PHI is.
- PHIIt->second.Reg = CP.getDstReg();
-
- // If we merge into a sub-register of a larger class (test above),
- // update SubReg.
- if (CP.getSrcIdx() != 0)
- PHIIt->second.SubReg = CP.getSrcIdx();
- }
-
- // Rebuild the register index in RegToPHIIdx to account for PHIs tracking
- // different VRegs now. Copy old collection of debug instruction numbers and
- // erase the old one:
- auto InstrNums = RegIt->second;
- RegToPHIIdx.erase(RegIt);
-
- // There might already be PHIs being tracked in the destination VReg. Insert
- // into an existing tracking collection, or insert a new one.
- RegIt = RegToPHIIdx.find(CP.getDstReg());
- if (RegIt != RegToPHIIdx.end())
- RegIt->second.insert(RegIt->second.end(), InstrNums.begin(),
- InstrNums.end());
- else
- RegToPHIIdx.insert({CP.getDstReg(), InstrNums});
- }
-
// Join RHS into LHS.
LHS.join(RHS, LHSVals.getAssignments(), RHSVals.getAssignments(), NewVNInfo);
else
JoinGlobalCopies = (EnableGlobalCopies == cl::BOU_TRUE);
- // If there are PHIs tracked by debug-info, they will need updating during
- // coalescing. Build an index of those PHIs to ease updating.
- SlotIndexes *Slots = LIS->getSlotIndexes();
- for (const auto &DebugPHI : MF->DebugPHIPositions) {
- MachineBasicBlock *MBB = DebugPHI.second.MBB;
- Register Reg = DebugPHI.second.Reg;
- unsigned SubReg = DebugPHI.second.SubReg;
- SlotIndex SI = Slots->getMBBStartIdx(MBB);
- PHIValPos P = {SI, Reg, SubReg};
- PHIValToPos.insert(std::make_pair(DebugPHI.first, P));
- RegToPHIIdx[Reg].push_back(DebugPHI.first);
- }
-
// The MachineScheduler does not currently require JoinSplitEdges. This will
// either be enabled unconditionally or replaced by a more general live range
// splitting optimization.
}
}
- // After coalescing, update any PHIs that are being tracked by debug-info
- // with their new VReg locations.
- for (auto &p : MF->DebugPHIPositions) {
- auto it = PHIValToPos.find(p.first);
- assert(it != PHIValToPos.end());
- p.second.Reg = it->second.Reg;
- p.second.SubReg = it->second.SubReg;
- }
-
- PHIValToPos.clear();
- RegToPHIIdx.clear();
-
LLVM_DEBUG(dump());
if (VerifyCoalescing)
MF->verify(this, "After register coalescing");
+++ /dev/null
-# RUN: llc %s -o - -mtriple=x86_64-unknown-unknown \
-# RUN: -experimental-debug-variable-locations \
-# RUN: -run-pass=phi-node-elimination,simple-register-coalescing \
-# RUN: | FileCheck %s --check-prefix=DOESCOALESCE
-# RUN: llc %s -o - -mtriple=x86_64-unknown-unknown \
-# RUN: -experimental-debug-variable-locations \
-# RUN: -run-pass=phi-node-elimination,simple-register-coalescing,livedebugvars,greedy,virtregrewriter \
-# RUN: | FileCheck %s --check-prefix=CHECK
-#
-# This is a sibling-test for phi-coalescing.mir, using similar code but where
-# registers are coalesced across subregisters. Specifically, vreg %2 below is
-# a 16-bit register, but will be coalesced into the lower 16 bits of a 32 bit
-# vreg during coalescing. We should survive this transformation, and emit a
-# DBG_PHI for $bx where the PHI was.
---- |
- ; ModuleID = 'promoted.ll'
- source_filename = "test.c"
- target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
- target triple = "x86_64-unknown-linux-gnu"
-
- ; Function Attrs: noinline nounwind uwtable
- define dso_local i32 @foo(i16 signext %bar, i16 signext %baz) !dbg !7 {
- entry:
- call void @llvm.dbg.value(metadata i16 %bar, metadata !12, metadata !DIExpression()), !dbg !13
- call void @llvm.dbg.value(metadata i16 %baz, metadata !14, metadata !DIExpression()), !dbg !13
- call void @ext(i16 signext %bar), !dbg !13
- %conv = sext i16 %bar to i32, !dbg !13
- %add = add nsw i32 %conv, 12, !dbg !13
- %conv1 = trunc i32 %add to i16, !dbg !13
- call void @llvm.dbg.value(metadata i16 %conv1, metadata !12, metadata !DIExpression()), !dbg !13
- call void @ext(i16 signext %conv1), !dbg !13
- %call = call signext i16 @getlong(), !dbg !13
- %tobool = icmp ne i16 %call, 0, !dbg !13
- br i1 %tobool, label %if.then, label %if.end, !dbg !13
-
- if.then: ; preds = %entry
- %conv2 = sext i16 %conv1 to i32, !dbg !13
- %add3 = add nsw i32 %conv2, 1, !dbg !13
- %conv4 = trunc i32 %add3 to i16, !dbg !13
- call void @llvm.dbg.value(metadata i16 %conv4, metadata !12, metadata !DIExpression()), !dbg !13
- br label %if.end, !dbg !13
-
- if.end: ; preds = %if.then, %entry
- %bar.addr.0 = phi i16 [ %conv4, %if.then ], [ %conv1, %entry ], !dbg !13
- call void @llvm.dbg.value(metadata i16 %bar.addr.0, metadata !12, metadata !DIExpression()), !dbg !13
- %conv5 = sext i16 %baz to i32, !dbg !13
- %conv6 = sext i16 %bar.addr.0 to i32, !dbg !13
- %add7 = add nsw i32 %conv6, %conv5, !dbg !13
- %conv8 = trunc i32 %add7 to i16, !dbg !13
- call void @llvm.dbg.value(metadata i16 %conv8, metadata !12, metadata !DIExpression()), !dbg !13
- call void @ext(i16 signext %conv8), !dbg !13
- %conv9 = sext i16 %conv8 to i32, !dbg !13
- ret i32 %conv9, !dbg !13
- }
-
- ; Function Attrs: nounwind readnone speculatable willreturn
- declare void @llvm.dbg.declare(metadata, metadata, metadata)
-
- declare dso_local void @ext(i16 signext)
-
- declare dso_local signext i16 @getlong()
-
- ; Function Attrs: nounwind readnone speculatable willreturn
- declare void @llvm.dbg.value(metadata, metadata, metadata)
-
- !llvm.dbg.cu = !{!0}
- !llvm.module.flags = !{!3, !4, !5}
- !llvm.ident = !{!6}
-
- !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 12.0.0 (git@github.com:llvm/llvm-project 79a35789efdf2378f97642ae4a5f3099b9087a11)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)
- !1 = !DIFile(filename: "test.c", directory: "/fast/fs/llvm3/llvm/test/DebugInfo/MIR/InstrRef")
- !2 = !{}
- !3 = !{i32 7, !"Dwarf Version", i32 4}
- !4 = !{i32 2, !"Debug Info Version", i32 3}
- !5 = !{i32 1, !"wchar_size", i32 4}
- !6 = !{!"clang version 12.0.0 (git@github.com:llvm/llvm-project 79a35789efdf2378f97642ae4a5f3099b9087a11)"}
- !7 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 3, type: !8, scopeLine: 3, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2)
- !8 = !DISubroutineType(types: !9)
- !9 = !{!10, !11, !11}
- !10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
- !11 = !DIBasicType(name: "short", size: 16, encoding: DW_ATE_signed)
- !12 = !DILocalVariable(name: "bar", arg: 1, scope: !7, file: !1, line: 3, type: !11)
- !13 = !DILocation(line: 0, scope: !7)
- !14 = !DILocalVariable(name: "baz", arg: 2, scope: !7, file: !1, line: 3, type: !11)
- !15 = distinct !DILexicalBlock(scope: !7, file: !1, line: 8, column: 7)
-
-...
----
-name: foo
-alignment: 16
-tracksRegLiveness: true
-liveins:
- - { reg: '$edi', virtual-reg: '%3' }
- - { reg: '$esi', virtual-reg: '%4' }
-frameInfo:
- maxAlignment: 1
- hasCalls: true
-machineFunctionInfo: {}
-body: |
- bb.0.entry:
- liveins: $edi, $esi
-
- %4:gr32 = COPY $esi
- %3:gr32 = COPY $edi
- %6:gr16 = COPY %4.sub_16bit
- %5:gr16 = COPY %3.sub_16bit
- DBG_VALUE %5, $noreg, !12, !DIExpression(), debug-location !13
- DBG_VALUE %6, $noreg, !14, !DIExpression(), debug-location !13
- ADJCALLSTACKDOWN64 0, 0, 0, implicit-def $rsp, implicit-def $eflags, implicit-def $ssp, implicit $rsp, implicit $ssp, debug-location !13
- %15:gr32 = MOVSX32rr16 %5, debug-location !13
- $edi = COPY %15, debug-location !13
- CALL64pcrel32 @ext, csr_64, implicit $rsp, implicit $ssp, implicit $edi, debug-location !13
- ADJCALLSTACKUP64 0, 0, implicit-def $rsp, implicit-def $eflags, implicit-def $ssp, implicit $rsp, implicit $ssp, debug-location !13
- %14:gr32 = MOVSX32rr16 %5, debug-location !13
- %13:gr32 = ADD32ri8 killed %14, 12, implicit-def $eflags, debug-location !13
- %11:gr16 = COPY killed %13.sub_16bit, debug-location !13
- DBG_VALUE %11, $noreg, !12, !DIExpression(), debug-location !13
- ADJCALLSTACKDOWN64 0, 0, 0, implicit-def $rsp, implicit-def $eflags, implicit-def $ssp, implicit $rsp, implicit $ssp, debug-location !13
- %9:gr32 = MOVSX32rr16 %11, debug-location !13
- $edi = COPY %9, debug-location !13
- CALL64pcrel32 @ext, csr_64, implicit $rsp, implicit $ssp, implicit $edi, debug-location !13
- ADJCALLSTACKUP64 0, 0, implicit-def $rsp, implicit-def $eflags, implicit-def $ssp, implicit $rsp, implicit $ssp, debug-location !13
- ADJCALLSTACKDOWN64 0, 0, 0, implicit-def $rsp, implicit-def $eflags, implicit-def $ssp, implicit $rsp, implicit $ssp, debug-location !13
- CALL64pcrel32 @getlong, csr_64, implicit $rsp, implicit $ssp, implicit-def $ax, debug-location !13
- ADJCALLSTACKUP64 0, 0, implicit-def $rsp, implicit-def $eflags, implicit-def $ssp, implicit $rsp, implicit $ssp, debug-location !13
- %8:gr16 = COPY $ax, debug-location !13
- CMP16ri8 %8, 0, implicit-def $eflags, debug-location !13
- JCC_1 %bb.2, 4, implicit $eflags, debug-location !13
-
- ; DOESCOALESCE-LABEL: bb.1.if.then:
- ; CHECK-LABEL: bb.1.if.then:
- bb.1.if.then:
- %20:gr32 = MOVSX32rr16 %11, debug-location !13
- %19:gr32 = ADD32ri8 killed %20, 1, implicit-def $eflags, debug-location !13
- %17:gr16 = COPY killed %19.sub_16bit, debug-location !13
- DBG_VALUE %17, $noreg, !12, !DIExpression(), debug-location !13
-
- ; Verify that vreg 17 is coalesced into gr32.
- ; DOESCOALESCE: %{{[0-9]+}}:gr32 = ADD32ri8
- ; DOESCOALESCE-NEXT: DBG_VALUE %{{[0-9]+}}.sub_16bit,
- ; Verify those registers land in $bx
- ; CHECK: renamable $ebp = ADD32ri8
- ; CHECK-NEXT: DBG_VALUE $bp
-
- ; DOESCOALESCE-LABEL: bb.2.if.end:
- ; CHECK-LABEL: bb.2.if.end:
- bb.2.if.end:
- %2:gr16 = PHI %11, %bb.0, %17, %bb.1, debug-instr-number 1, debug-location !13
- ; CHECK: DBG_PHI $bp, 1
- DBG_INSTR_REF 1, 0, !12, !DIExpression(), debug-location !13
- %31:gr32 = MOVSX32rr16 %6, debug-location !13
- %30:gr32 = MOVSX32rr16 killed %2, debug-location !13
- %29:gr32 = ADD32rr killed %30, killed %31, implicit-def $eflags, debug-location !13
- %26:gr16 = COPY killed %29.sub_16bit, debug-location !13
- DBG_VALUE %26, $noreg, !12, !DIExpression(), debug-location !13
- ADJCALLSTACKDOWN64 0, 0, 0, implicit-def $rsp, implicit-def $eflags, implicit-def $ssp, implicit $rsp, implicit $ssp, debug-location !13
- %24:gr32 = MOVSX32rr16 %26, debug-location !13
- $edi = COPY %24, debug-location !13
- CALL64pcrel32 @ext, csr_64, implicit $rsp, implicit $ssp, implicit $edi, debug-location !13
- ADJCALLSTACKUP64 0, 0, implicit-def $rsp, implicit-def $eflags, implicit-def $ssp, implicit $rsp, implicit $ssp, debug-location !13
- %23:gr32 = MOVSX32rr16 %26, debug-location !13
- $eax = COPY %23, debug-location !13
- RETQ implicit $eax, debug-location !13
-
-...
+++ /dev/null
-# RUN: llc %s -o - -mtriple=x86_64-unknown-unknown \
-# RUN: -experimental-debug-variable-locations \
-# RUN: -run-pass=phi-node-elimination,simple-register-coalescing \
-# RUN: | FileCheck %s --check-prefix=DOESCOALESCE
-# RUN: llc %s -o - -mtriple=x86_64-unknown-unknown \
-# RUN: -experimental-debug-variable-locations \
-# RUN: -run-pass=phi-node-elimination,simple-register-coalescing,livedebugvars,greedy,virtregrewriter \
-# RUN: | FileCheck %s --check-prefix=CHECK
-#
-# Test that a PHI with a debug instruction number attached survives register
-# coalescing, when its vreg gets coalesced. This test comes in two parts, first
-# that coalescing actually happens, second that a DBG_PHI is still produced
-# afterwards.
-#
-# Original C code, the PHI is of the value of 'bar' after the control flow.
-# Compiled at -O0, applied -mem2reg, llc -O0, then manually added the PHI
-# instruction label.
-#
-# void ext(long);
-# long getlong(void);
-# int foo(long bar, long baz) {
-# ext(bar);
-# bar += 12;
-# ext(bar);
-#
-# if (getlong())
-# bar += 1;
-#
-# bar += baz;
-# ext(bar);
-# return bar;
-# }
-#
---- |
- ; ModuleID = 'promoted.ll'
- source_filename = "test.c"
- target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
- target triple = "x86_64-unknown-linux-gnu"
-
- define dso_local i32 @foo(i64 %bar, i64 %baz) !dbg !7 {
- entry:
- call void @llvm.dbg.value(metadata i64 %bar, metadata !12, metadata !DIExpression()), !dbg !13
- call void @llvm.dbg.value(metadata i64 %baz, metadata !14, metadata !DIExpression()), !dbg !13
- call void @ext(i64 %bar), !dbg !13
- %add = add nsw i64 %bar, 12, !dbg !13
- call void @llvm.dbg.value(metadata i64 %add, metadata !12, metadata !DIExpression()), !dbg !13
- call void @ext(i64 %add), !dbg !13
- %call = call i64 @getlong(), !dbg !13
- %tobool = icmp ne i64 %call, 0, !dbg !13
- br i1 %tobool, label %if.then, label %if.end, !dbg !13
-
- if.then: ; preds = %entry
- %add1 = add nsw i64 %add, 1, !dbg !13
- call void @llvm.dbg.value(metadata i64 %add1, metadata !12, metadata !DIExpression()), !dbg !13
- br label %if.end, !dbg !13
-
- if.end: ; preds = %if.then, %entry
- %bar.addr.0 = phi i64 [ %add1, %if.then ], [ %add, %entry ], !dbg !13
- call void @llvm.dbg.value(metadata i64 %bar.addr.0, metadata !12, metadata !DIExpression()), !dbg !13
- %add2 = add nsw i64 %bar.addr.0, %baz, !dbg !13
- call void @llvm.dbg.value(metadata i64 %add2, metadata !12, metadata !DIExpression()), !dbg !13
- call void @ext(i64 %add2), !dbg !13
- %conv = trunc i64 %add2 to i32, !dbg !13
- ret i32 %conv, !dbg !13
- }
-
- ; Function Attrs: nounwind readnone speculatable willreturn
- declare void @llvm.dbg.declare(metadata, metadata, metadata)
-
- declare dso_local void @ext(i64)
-
- declare dso_local i64 @getlong()
-
- ; Function Attrs: nounwind readnone speculatable willreturn
- declare void @llvm.dbg.value(metadata, metadata, metadata)
-
- !llvm.dbg.cu = !{!0}
- !llvm.module.flags = !{!3, !4, !5}
- !llvm.ident = !{!6}
-
- !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)
- !1 = !DIFile(filename: "test.c", directory: "/tmp/out.c")
- !2 = !{}
- !3 = !{i32 7, !"Dwarf Version", i32 4}
- !4 = !{i32 2, !"Debug Info Version", i32 3}
- !5 = !{i32 1, !"wchar_size", i32 4}
- !6 = !{!""}
- !7 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 3, type: !8, scopeLine: 3, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2)
- !8 = !DISubroutineType(types: !9)
- !9 = !{!10, !11, !11}
- !10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
- !11 = !DIBasicType(name: "long int", size: 64, encoding: DW_ATE_signed)
- !12 = !DILocalVariable(name: "bar", arg: 1, scope: !7, file: !1, line: 3, type: !11)
- !13 = !DILocation(line: 0, scope: !7)
- !14 = !DILocalVariable(name: "baz", arg: 2, scope: !7, file: !1, line: 3, type: !11)
- !15 = distinct !DILexicalBlock(scope: !7, file: !1, line: 8, column: 7)
-
-...
----
-name: foo
-alignment: 16
-tracksRegLiveness: true
-liveins:
- - { reg: '$rdi', virtual-reg: '%3' }
- - { reg: '$rsi', virtual-reg: '%5' }
-frameInfo:
- maxAlignment: 1
- hasCalls: true
-machineFunctionInfo: {}
-body: |
- bb.0.entry:
- liveins: $rdi, $rsi
-
- %5:gr64 = COPY $rsi
- %3:gr64 = COPY $rdi
- %4:gr64 = COPY killed %3
- %6:gr64 = COPY killed %5
- DBG_VALUE %4, $noreg, !12, !DIExpression(), debug-location !13
- DBG_VALUE %6, $noreg, !14, !DIExpression(), debug-location !13
- ADJCALLSTACKDOWN64 0, 0, 0, implicit-def $rsp, implicit-def $eflags, implicit-def $ssp, implicit $rsp, implicit $ssp, debug-location !13
- $rdi = COPY %4, debug-location !13
- CALL64pcrel32 @ext, csr_64, implicit $rsp, implicit $ssp, implicit $rdi, debug-location !13
- ADJCALLSTACKUP64 0, 0, implicit-def $rsp, implicit-def $eflags, implicit-def $ssp, implicit $rsp, implicit $ssp, debug-location !13
- %9:gr64 = ADD64ri32 %4, 12, implicit-def $eflags, debug-location !13
- DBG_VALUE %9, $noreg, !12, !DIExpression(), debug-location !13
- ADJCALLSTACKDOWN64 0, 0, 0, implicit-def $rsp, implicit-def $eflags, implicit-def $ssp, implicit $rsp, implicit $ssp, debug-location !13
- $rdi = COPY %9, debug-location !13
- CALL64pcrel32 @ext, csr_64, implicit $rsp, implicit $ssp, implicit $rdi, debug-location !13
- ADJCALLSTACKUP64 0, 0, implicit-def $rsp, implicit-def $eflags, implicit-def $ssp, implicit $rsp, implicit $ssp, debug-location !13
- ADJCALLSTACKDOWN64 0, 0, 0, implicit-def $rsp, implicit-def $eflags, implicit-def $ssp, implicit $rsp, implicit $ssp, debug-location !13
- CALL64pcrel32 @getlong, csr_64, implicit $rsp, implicit $ssp, implicit-def $rax, debug-location !13
- ADJCALLSTACKUP64 0, 0, implicit-def $rsp, implicit-def $eflags, implicit-def $ssp, implicit $rsp, implicit $ssp, debug-location !13
- %8:gr64 = COPY $rax, debug-location !13
- CMP64ri8 %8, 0, implicit-def $eflags, debug-location !13
- JCC_1 %bb.2, 4, implicit $eflags, debug-location !13
-
- ; DOESCOALESCE-LABEL: bb.1.if.then:
- ; CHECK-LABEL: bb.1.if.then:
- bb.1.if.then:
- %10:gr64 = ADD64ri32 %9, 1, implicit-def $eflags, debug-location !13
- DBG_VALUE %10, $noreg, !12, !DIExpression(), debug-location !13
-
- ; Verify that the vreg is different immediately after register coalescing.
- ; DOESCOALESCE-NOT: %10:gr64 ADD64ri32
- ; DOESCOALESCE: %{{[0-9]+}}:gr64 = ADD64ri32
- ; Verify that all these registers land in rbx.
- ; CHECK: renamable $rbx = ADD64ri32 killed renamable $rbx
-
- ; DOESCOALESCE-LABEL: bb.2.if.end:
- ; CHECK-LABEL: bb.2.if.end:
- bb.2.if.end:
- %2:gr64 = PHI %9, %bb.0, %10, %bb.1, debug-instr-number 1, debug-location !13
- ; CHECK: DBG_PHI $rbx, 1
- DBG_INSTR_REF 1, 0, !12, !DIExpression(), debug-location !13
- %14:gr64 = ADD64rr killed %2, %6, implicit-def $eflags, debug-location !13
- DBG_VALUE %14, $noreg, !12, !DIExpression(), debug-location !13
- ADJCALLSTACKDOWN64 0, 0, 0, implicit-def $rsp, implicit-def $eflags, implicit-def $ssp, implicit $rsp, implicit $ssp, debug-location !13
- $rdi = COPY %14, debug-location !13
- CALL64pcrel32 @ext, csr_64, implicit $rsp, implicit $ssp, implicit $rdi, debug-location !13
- ADJCALLSTACKUP64 0, 0, implicit-def $rsp, implicit-def $eflags, implicit-def $ssp, implicit $rsp, implicit $ssp, debug-location !13
- %13:gr32 = COPY %14.sub_32bit, debug-location !13
- $eax = COPY %13, debug-location !13
- RETQ implicit $eax, debug-location !13
-
-...
projects / platform / upstream / llvm.git / commitdiff