diff --git a/lib/CodeGen/SelectionDAG/FastISel.cpp b/lib/CodeGen/SelectionDAG/FastISel.cpp index f37790d0983..8c98e3740f6 100644 --- a/lib/CodeGen/SelectionDAG/FastISel.cpp +++ b/lib/CodeGen/SelectionDAG/FastISel.cpp @@ -1150,16 +1150,16 @@ bool FastISel::selectIntrinsicCall(const IntrinsicInst *II) { return true; } - // Byval arguments with frame indices were already handled after argument - // lowering and before isel. - const auto *Arg = - dyn_cast(Address->stripInBoundsConstantOffsets()); - if (Arg && FuncInfo.getArgumentFrameIndex(Arg) != INT_MAX) - return true; - + unsigned Offset = 0; Optional Op; - if (unsigned Reg = lookUpRegForValue(Address)) - Op = MachineOperand::CreateReg(Reg, false); + if (const auto *Arg = dyn_cast(Address)) + // Some arguments' frame index is recorded during argument lowering. + Offset = FuncInfo.getArgumentFrameIndex(Arg); + if (Offset) + Op = MachineOperand::CreateFI(Offset); + if (!Op) + if (unsigned Reg = lookUpRegForValue(Address)) + Op = MachineOperand::CreateReg(Reg, false); // If we have a VLA that has a "use" in a metadata node that's then used // here but it has no other uses, then we have a problem. E.g., diff --git a/lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp b/lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp index 606b8952f3c..cdf4d3a8b4e 100644 --- a/lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp +++ b/lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp @@ -85,6 +85,7 @@ void FunctionLoweringInfo::set(const Function &fn, MachineFunction &mf, MF = &mf; TLI = MF->getSubtarget().getTargetLowering(); RegInfo = &MF->getRegInfo(); + MachineModuleInfo &MMI = MF->getMMI(); const TargetFrameLowering *TFI = MF->getSubtarget().getFrameLowering(); unsigned StackAlign = TFI->getStackAlignment(); @@ -213,6 +214,33 @@ void FunctionLoweringInfo::set(const Function &fn, MachineFunction &mf, if (!isa(I) || !StaticAllocaMap.count(cast(&I))) InitializeRegForValue(&I); + // Collect llvm.dbg.declare information. This is done now instead of + // during the initial isel pass through the IR so that it is done + // in a predictable order. + if (const DbgDeclareInst *DI = dyn_cast(&I)) { + assert(DI->getVariable() && "Missing variable"); + assert(DI->getDebugLoc() && "Missing location"); + if (MMI.hasDebugInfo()) { + // Don't handle byval struct arguments or VLAs, for example. + // Non-byval arguments are handled here (they refer to the stack + // temporary alloca at this point). + const Value *Address = DI->getAddress(); + if (Address) { + if (const BitCastInst *BCI = dyn_cast(Address)) + Address = BCI->getOperand(0); + if (const AllocaInst *AI = dyn_cast(Address)) { + DenseMap::iterator SI = + StaticAllocaMap.find(AI); + if (SI != StaticAllocaMap.end()) { // Check for VLAs. + int FI = SI->second; + MF->setVariableDbgInfo(DI->getVariable(), DI->getExpression(), + FI, DI->getDebugLoc()); + } + } + } + } + } + // Decide the preferred extend type for a value. PreferredExtendType[&I] = getPreferredExtendForValue(&I); } @@ -482,11 +510,12 @@ void FunctionLoweringInfo::setArgumentFrameIndex(const Argument *A, /// If the argument does not have any assigned frame index then 0 is /// returned. int FunctionLoweringInfo::getArgumentFrameIndex(const Argument *A) { - auto I = ByValArgFrameIndexMap.find(A); + DenseMap::iterator I = + ByValArgFrameIndexMap.find(A); if (I != ByValArgFrameIndexMap.end()) return I->second; DEBUG(dbgs() << "Argument does not have assigned frame index!\n"); - return INT_MAX; + return 0; } unsigned FunctionLoweringInfo::getCatchPadExceptionPointerVReg( diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp index 7b566d518f7..6aa755df147 100644 --- a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp +++ b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp @@ -4676,8 +4676,7 @@ bool SelectionDAGBuilder::EmitFuncArgumentDbgValue( bool IsIndirect = false; Optional Op; // Some arguments' frame index is recorded during argument lowering. - int FI = FuncInfo.getArgumentFrameIndex(Arg); - if (FI != INT_MAX) + if (int FI = FuncInfo.getArgumentFrameIndex(Arg)) Op = MachineOperand::CreateFI(FI); if (!Op && N.getNode()) { @@ -4928,13 +4927,6 @@ SelectionDAGBuilder::visitIntrinsicCall(const CallInst &I, unsigned Intrinsic) { return nullptr; } - // Byval arguments with frame indices were already handled after argument - // lowering and before isel. - const auto *Arg = - dyn_cast(Address->stripInBoundsConstantOffsets()); - if (Arg && FuncInfo.getArgumentFrameIndex(Arg) != INT_MAX) - return nullptr; - SDValue &N = NodeMap[Address]; if (!N.getNode() && isa(Address)) // Check unused arguments map. diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp index c7eb9b80701..3aabdaeaa09 100644 --- a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp +++ b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp @@ -38,7 +38,6 @@ #include "llvm/CodeGen/MachineInstr.h" #include "llvm/CodeGen/MachineInstrBuilder.h" #include "llvm/CodeGen/MachineMemOperand.h" -#include "llvm/CodeGen/MachineModuleInfo.h" #include "llvm/CodeGen/MachineOperand.h" #include "llvm/CodeGen/MachinePassRegistry.h" #include "llvm/CodeGen/MachineRegisterInfo.h" @@ -1146,51 +1145,6 @@ static void createSwiftErrorEntriesInEntryBlock(FunctionLoweringInfo *FuncInfo, } } -/// Collect llvm.dbg.declare information. This is done after argument lowering -/// in case the declarations refer to arguments. -static void processDbgDeclares(FunctionLoweringInfo *FuncInfo) { - MachineFunction *MF = FuncInfo->MF; - const DataLayout &DL = MF->getDataLayout(); - for (const BasicBlock &BB : *FuncInfo->Fn) { - for (const Instruction &I : BB) { - const DbgDeclareInst *DI = dyn_cast(&I); - if (!DI) - continue; - - assert(DI->getVariable() && "Missing variable"); - assert(DI->getDebugLoc() && "Missing location"); - const Value *Address = DI->getAddress(); - if (!Address) - continue; - - // Look through casts and constant offset GEPs. These mostly come from - // inalloca. - APInt Offset(DL.getPointerSizeInBits(0), 0); - Address = Address->stripAndAccumulateInBoundsConstantOffsets(DL, Offset); - - // Check if the variable is a static alloca or a byval or inalloca - // argument passed in memory. If it is not, then we will ignore this - // intrinsic and handle this during isel like dbg.value. - int FI = INT_MAX; - if (const auto *AI = dyn_cast(Address)) { - auto SI = FuncInfo->StaticAllocaMap.find(AI); - if (SI != FuncInfo->StaticAllocaMap.end()) - FI = SI->second; - } else if (const auto *Arg = dyn_cast(Address)) - FI = FuncInfo->getArgumentFrameIndex(Arg); - - if (FI == INT_MAX) - continue; - - DIExpression *Expr = DI->getExpression(); - if (Offset.getBoolValue()) - Expr = DIExpression::prepend(Expr, DIExpression::NoDeref, - Offset.getZExtValue()); - MF->setVariableDbgInfo(DI->getVariable(), Expr, FI, DI->getDebugLoc()); - } - } -} - /// Propagate swifterror values through the machine function CFG. static void propagateSwiftErrorVRegs(FunctionLoweringInfo *FuncInfo) { auto *TLI = FuncInfo->TLI; @@ -1363,8 +1317,6 @@ void SelectionDAGISel::SelectAllBasicBlocks(const Function &Fn) { } createSwiftErrorEntriesInEntryBlock(FuncInfo, FastIS, TLI, TII, SDB); - processDbgDeclares(FuncInfo); - // Iterate over all basic blocks in the function. for (const BasicBlock *LLVMBB : RPOT) { if (OptLevel != CodeGenOpt::None) { diff --git a/test/CodeGen/X86/2010-01-18-DbgValue.ll b/test/CodeGen/X86/2010-01-18-DbgValue.ll index ae60d57bbf4..8b11fd86ef1 100644 --- a/test/CodeGen/X86/2010-01-18-DbgValue.ll +++ b/test/CodeGen/X86/2010-01-18-DbgValue.ll @@ -1,19 +1,14 @@ -; RUN: llc -march=x86 -O0 < %s -filetype=obj | llvm-dwarfdump - | FileCheck %s +; RUN: llc -march=x86 -O0 < %s | FileCheck %s +; Currently, dbg.declare generates a DEBUG_VALUE comment. Eventually it will +; generate DWARF and this test will need to be modified or removed. -; CHECK-LABEL: .debug_info contents: - -; CHECK-LABEL: DW_TAG_subprogram -; CHECK: DW_AT_name [DW_FORM_strp] ( {{.*}}"foo") -; CHECK: DW_TAG_formal_parameter -; CHECK-NEXT: DW_AT_location [DW_FORM_exprloc] (<0x2> 91 {{..}} ) -; DW_OP_fbreg ?? -; CHECK-NEXT: DW_AT_name [DW_FORM_strp] ( {{.*}}"my_r0") %struct.Pt = type { double, double } %struct.Rect = type { %struct.Pt, %struct.Pt } define double @foo(%struct.Rect* byval %my_r0) nounwind ssp !dbg !1 { entry: +;CHECK: DEBUG_VALUE %retval = alloca double ; [#uses=2] %0 = alloca double ; [#uses=2] %"alloca point" = bitcast i32 0 to i32 ; [#uses=0] diff --git a/test/CodeGen/X86/2012-11-30-handlemove-dbg.ll b/test/CodeGen/X86/2012-11-30-handlemove-dbg.ll new file mode 100644 index 00000000000..495ff0304b1 --- /dev/null +++ b/test/CodeGen/X86/2012-11-30-handlemove-dbg.ll @@ -0,0 +1,51 @@ +; RUN: llc < %s -mtriple=x86_64-apple-macosx -enable-misched \ +; RUN: -verify-machineinstrs | FileCheck %s +; +; Test LiveInterval update handling of DBG_VALUE. +; rdar://12777252. +; +; CHECK: %entry +; CHECK: DEBUG_VALUE: subdivp:hg +; CHECK: j + +%struct.node.0.27 = type { i16, double, [3 x double], i32, i32 } +%struct.hgstruct.2.29 = type { %struct.bnode.1.28*, [3 x double], double, [3 x double] } +%struct.bnode.1.28 = type { i16, double, [3 x double], i32, i32, [3 x double], [3 x double], [3 x double], double, %struct.bnode.1.28*, %struct.bnode.1.28* } + +declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone + +define signext i16 @subdivp(%struct.node.0.27* nocapture %p, double %dsq, double %tolsq, %struct.hgstruct.2.29* nocapture byval align 8 %hg) nounwind uwtable readonly ssp !dbg !14 { +entry: + call void @llvm.dbg.declare(metadata %struct.hgstruct.2.29* %hg, metadata !4, metadata !DIExpression()), !dbg !DILocation(scope: !14) + %type = getelementptr inbounds %struct.node.0.27, %struct.node.0.27* %p, i64 0, i32 0 + %0 = load i16, i16* %type, align 2 + %cmp = icmp eq i16 %0, 1 + br i1 %cmp, label %return, label %for.cond.preheader + +for.cond.preheader: ; preds = %entry + %arrayidx6.1 = getelementptr inbounds %struct.hgstruct.2.29, %struct.hgstruct.2.29* %hg, i64 0, i32 1, i64 1 + %cmp22 = fcmp olt double 0.000000e+00, %dsq + %conv24 = zext i1 %cmp22 to i16 + br label %return + +return: ; preds = %for.cond.preheader, %entry + %retval.0 = phi i16 [ %conv24, %for.cond.preheader ], [ 0, %entry ] + ret i16 %retval.0 +} + +declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnone + +!llvm.dbg.cu = !{!0} +!llvm.module.flags = !{!12} + +!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.3 (trunk 168918) (llvm/trunk 168920)", isOptimized: true, emissionKind: FullDebug, file: !11, enums: !2, retainedTypes: !2, globals: !2) +!2 = !{} +!4 = !DILocalVariable(name: "hg", line: 725, arg: 4, scope: !14, file: !5, type: !6) +!5 = !DIFile(filename: "MultiSource/Benchmarks/Olden/bh/newbh.c", directory: "MultiSource/Benchmarks/Olden/bh") +!6 = !DIDerivedType(tag: DW_TAG_typedef, name: "hgstruct", line: 492, file: !11, baseType: !7) +!7 = !DICompositeType(tag: DW_TAG_structure_type, line: 487, size: 512, align: 64, file: !11) +!11 = !DIFile(filename: "MultiSource/Benchmarks/Olden/bh/newbh.c", directory: "MultiSource/Benchmarks/Olden/bh") +!12 = !{i32 1, !"Debug Info Version", i32 3} +!14 = distinct !DISubprogram(name: "subdivp", isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, scopeLine: 1, file: !11, scope: !5, type: !15) +!15 = !DISubroutineType(types: !16) +!16 = !{null} diff --git a/test/CodeGen/X86/dbg-baseptr.ll b/test/CodeGen/X86/dbg-baseptr.ll index 893ca93a994..fb0da1b50d1 100644 --- a/test/CodeGen/X86/dbg-baseptr.ll +++ b/test/CodeGen/X86/dbg-baseptr.ll @@ -1,5 +1,4 @@ ; RUN: llc -o - %s | FileCheck %s -; RUN: llc -filetype=obj -o - %s | llvm-dwarfdump - | FileCheck %s --check-prefix=DWARF ; This test checks that parameters on the stack pointer are correctly ; referenced by debug info. target triple = "x86_64--" @@ -8,54 +7,24 @@ target triple = "x86_64--" @ptr = external global i32* %struct.s = type { i32, i32, i32, i32, i32 } -; Simple case: no FP, use offset from RSP. - ; CHECK-LABEL: f0: -; CHECK-NOT: pushq -; CHECK: movl $42, %eax -; CHECK: retq +; CHECK: DEBUG_VALUE: f:input <- [%RSP+8] define i32 @f0(%struct.s* byval align 8 %input) !dbg !8 { call void @llvm.dbg.declare(metadata %struct.s* %input, metadata !4, metadata !17), !dbg !18 - ret i32 42, !dbg !18 + ret i32 42 } -; DWARF-LABEL: .debug_info contents: - -; DWARF-LABEL: DW_TAG_subprogram -; DWARF: DW_AT_frame_base [DW_FORM_exprloc] (<0x1> 57 ) -; 0x57 -> RSP -; DWARF: DW_AT_name [DW_FORM_strp] ( {{.*}}"f0") -; DWARF: DW_TAG_formal_parameter -; DWARF-NEXT: DW_AT_location [DW_FORM_exprloc] (<0x2> 91 08 ) -; DW_OP_fbreg (0x91) 0x08 -; DWARF-NEXT: DW_AT_name [DW_FORM_strp] ( {{.*}}"input") - - -; Dynamic alloca forces the use of RBP as the base pointer - ; CHECK-LABEL: f1: -; CHECK: pushq %rbp -; CHECK: movl $42, %eax -; CHECK: popq %rbp -; CHECK: retq +; CHECK: DEBUG_VALUE: f:input <- [%RBP+16] define i32 @f1(%struct.s* byval align 8 %input) !dbg !19 { %val = load i64, i64* @glob ; this alloca should force FP usage. %stackspace = alloca i32, i64 %val, align 1 store i32* %stackspace, i32** @ptr call void @llvm.dbg.declare(metadata %struct.s* %input, metadata !20, metadata !17), !dbg !21 - ret i32 42, !dbg !21 + ret i32 42 } -; DWARF-LABEL: DW_TAG_subprogram -; DWARF: DW_AT_frame_base [DW_FORM_exprloc] (<0x1> 56 ) -; 0x56 -> RBP -; DWARF: DW_AT_name [DW_FORM_strp] ( {{.*}}"f1") -; DWARF: DW_TAG_formal_parameter -; DWARF-NEXT: DW_AT_location [DW_FORM_exprloc] (<0x2> 91 10 ) -; DW_OP_fbreg (0x91) 0x10 -; DWARF-NEXT: DW_AT_name [DW_FORM_strp] ( {{.*}}"input") - ; CHECK-LABEL: f2: ; Just check that we are indeed aligning the stack and setting up a base pointer ; in RBX. @@ -65,24 +34,17 @@ define i32 @f1(%struct.s* byval align 8 %input) !dbg !19 { ; CHECK: andq $-64, %rsp ; CHECK: subq $64, %rsp ; CHECK: movq %rsp, %rbx +; The parameter should still be referenced through RBP though. +; CHECK-NOT: DEBUG_VALUE: f:input <- [%RBX +; CHECK: DEBUG_VALUE: f:input <- [%RBP+16] define i32 @f2(%struct.s* byval align 8 %input) !dbg !22 { %val = load i64, i64* @glob %stackspace = alloca i32, i64 %val, align 64 store i32* %stackspace, i32** @ptr call void @llvm.dbg.declare(metadata %struct.s* %input, metadata !23, metadata !17), !dbg !24 - ret i32 42, !dbg !24 + ret i32 42 } -; "input" should still be referred to through RBP. -; DWARF-LABEL: DW_TAG_subprogram -; DWARF: DW_AT_frame_base [DW_FORM_exprloc] (<0x1> 56 ) -; 0x56 -> RBP -; DWARF: DW_AT_name [DW_FORM_strp] ( {{.*}}"f2") -; DWARF: DW_TAG_formal_parameter -; DWARF-NEXT: DW_AT_location [DW_FORM_exprloc] (<0x2> 91 10 ) -; DW_OP_fbreg (0x91) 0x10 -; DWARF-NEXT: DW_AT_name [DW_FORM_strp] ( {{.*}}"input") - declare void @llvm.dbg.declare(metadata, metadata, metadata) !llvm.dbg.cu = !{!2} @@ -90,7 +52,7 @@ declare void @llvm.dbg.declare(metadata, metadata, metadata) !0 = !{i32 2, !"Dwarf Version", i32 4} !1 = !{i32 2, !"Debug Info Version", i32 3} -!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, emissionKind: FullDebug) +!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3) !3 = !DIFile(filename: "dbg-baseptr.ll", directory: "/") !4 = !DILocalVariable(name: "input", arg: 1, scope: !8, file: !3, line: 5, type: !9) !5 = !{} @@ -98,7 +60,7 @@ declare void @llvm.dbg.declare(metadata, metadata, metadata) !6 = !DISubroutineType(types: !7) !7 = !{!10, !9} -!8 = distinct !DISubprogram(name: "f0", file: !3, line: 5, type: !6, isLocal: false, isDefinition: true, unit: !2, variables: !5) +!8 = distinct !DISubprogram(name: "f", file: !3, line: 5, type: !6, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, unit: !2, variables: !5) !9 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "s", elements: !11) !10 = !DIBasicType(name: "unsigned int", size: 32, encoding: DW_ATE_unsigned) @@ -112,9 +74,9 @@ declare void @llvm.dbg.declare(metadata, metadata, metadata) !17 = !DIExpression() !18 = !DILocation(line: 5, scope: !8) -!19 = distinct !DISubprogram(name: "f1", file: !3, line: 5, type: !6, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, unit: !2, variables: !5) +!19 = distinct !DISubprogram(name: "f", file: !3, line: 5, type: !6, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, unit: !2, variables: !5) !20 = !DILocalVariable(name: "input", arg: 1, scope: !19, file: !3, line: 5, type: !9) !21 = !DILocation(line: 5, scope: !19) -!22 = distinct !DISubprogram(name: "f2", file: !3, line: 5, type: !6, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, unit: !2, variables: !5) +!22 = distinct !DISubprogram(name: "f", file: !3, line: 5, type: !6, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, unit: !2, variables: !5) !23 = !DILocalVariable(name: "input", arg: 1, scope: !22, file: !3, line: 5, type: !9) !24 = !DILocation(line: 5, scope: !22) diff --git a/test/DebugInfo/X86/dbg-declare-inalloca.ll b/test/DebugInfo/X86/dbg-declare-inalloca.ll deleted file mode 100644 index 5301cd66146..00000000000 --- a/test/DebugInfo/X86/dbg-declare-inalloca.ll +++ /dev/null @@ -1,158 +0,0 @@ -; RUN: llc -O0 < %s | FileCheck %s --check-prefix=CHECK --check-prefix=DEBUG -; RUN: llc < %s | FileCheck %s - -; IR generated by the following source: -; struct NonTrivial { -; NonTrivial();// : x(42) {} -; ~NonTrivial();// {} -; int x; -; }; -; extern "C" void g(int);// {} -; extern "C" void h(int);// {} -; extern "C" void f(NonTrivial a, int b, int unused, int c) { -; if (b) { -; g(c); -; } else { -; h(a.x); -; } -; (void)unused; -; } -; //int main() { -; // NonTrivial x; -; // f(x, 1, 2, 3); -; //} -; -; Remove C++ comments to have a complete, debuggable program. - -; We don't need (or want) DBG_VALUE instructions to describe the location of -; inalloca arguments. We want frame indices in the side table, especially at -; -O0, because they are reliable across the entire function and don't require -; any propagation or analysis. - -; CHECK: _f: # @f -; CHECK: Lfunc_begin0: -; CHECK-NOT: DEBUG_VALUE -; CHECK: [[start:Ltmp[0-9]+]]: -; CHECK-NOT: DEBUG_VALUE -; CHECK: cmpl -; CHECK: calll _g -; CHECK: calll _h -; CHECK: jmp "??1NonTrivial@@QAE@XZ" -; CHECK: [[end:Ltmp[0-9]+]]: -; CHECK: Lfunc_end0: - -; FIXME: Optimized debug info should preserve this. -; DEBUG: .short 4414 # Record kind: S_LOCAL -; DEBUG: .asciz "a" -; DEBUG: .cv_def_range [[start]] [[end]] - -; CHECK: .short 4414 # Record kind: S_LOCAL -; CHECK: .asciz "b" -; CHECK: .cv_def_range [[start]] [[end]] - -; CHECK: .short 4414 # Record kind: S_LOCAL -; CHECK: .asciz "c" -; CHECK: .cv_def_range [[start]] [[end]] - - - -; ModuleID = 't.cpp' -source_filename = "t.cpp" -target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32" -target triple = "i386-pc-windows-msvc19.10.24728" - -%struct.NonTrivial = type { i32 } - -; Function Attrs: nounwind -define void @f(<{ %struct.NonTrivial, i32, i32, i32 }>* inalloca) local_unnamed_addr #0 !dbg !7 { -entry: - %a = getelementptr inbounds <{ %struct.NonTrivial, i32, i32, i32 }>, <{ %struct.NonTrivial, i32, i32, i32 }>* %0, i32 0, i32 0 - %b = getelementptr inbounds <{ %struct.NonTrivial, i32, i32, i32 }>, <{ %struct.NonTrivial, i32, i32, i32 }>* %0, i32 0, i32 1 - tail call void @llvm.dbg.declare(metadata i32* %c, metadata !20, metadata !24), !dbg !25 - tail call void @llvm.dbg.declare(metadata i32* %b, metadata !22, metadata !24), !dbg !26 - tail call void @llvm.dbg.declare(metadata %struct.NonTrivial* %a, metadata !23, metadata !24), !dbg !27 - %1 = load i32, i32* %b, align 4, !dbg !28, !tbaa !30 - %tobool = icmp eq i32 %1, 0, !dbg !28 - br i1 %tobool, label %if.else, label %if.then, !dbg !34 - -if.then: ; preds = %entry - %c = getelementptr inbounds <{ %struct.NonTrivial, i32, i32, i32 }>, <{ %struct.NonTrivial, i32, i32, i32 }>* %0, i32 0, i32 3 - %2 = load i32, i32* %c, align 4, !dbg !35, !tbaa !30 - tail call void @g(i32 %2) #4, !dbg !37 - br label %if.end, !dbg !38 - -if.else: ; preds = %entry - %x = getelementptr inbounds <{ %struct.NonTrivial, i32, i32, i32 }>, <{ %struct.NonTrivial, i32, i32, i32 }>* %0, i32 0, i32 0, i32 0, !dbg !39 - %3 = load i32, i32* %x, align 4, !dbg !39, !tbaa !41 - tail call void @h(i32 %3) #4, !dbg !43 - br label %if.end - -if.end: ; preds = %if.else, %if.then - tail call x86_thiscallcc void @"\01??1NonTrivial@@QAE@XZ"(%struct.NonTrivial* nonnull %a) #4, !dbg !44 - ret void, !dbg !44 -} - -; Function Attrs: nounwind readnone speculatable -declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 - -declare void @g(i32) local_unnamed_addr - -declare void @h(i32) local_unnamed_addr - -; Function Attrs: nounwind -declare x86_thiscallcc void @"\01??1NonTrivial@@QAE@XZ"(%struct.NonTrivial*) unnamed_addr #3 - -attributes #0 = { nounwind } -attributes #1 = { nounwind readnone speculatable } -attributes #3 = { nounwind } -attributes #4 = { nounwind } - -!llvm.dbg.cu = !{!0} -!llvm.module.flags = !{!3, !4, !5} -!llvm.ident = !{!6} - -!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 5.0.0 ", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2) -!1 = !DIFile(filename: "t.cpp", directory: "C:\5Csrc\5Cllvm-project\5Cbuild", checksumkind: CSK_MD5, checksum: "e41e3fda2a91b52e121ed6c29a209eae") -!2 = !{} -!3 = !{i32 1, !"NumRegisterParameters", i32 0} -!4 = !{i32 2, !"CodeView", i32 1} -!5 = !{i32 2, !"Debug Info Version", i32 3} -!6 = !{!"clang version 5.0.0 "} -!7 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 8, type: !8, isLocal: false, isDefinition: true, scopeLine: 8, flags: DIFlagPrototyped, isOptimized: true, unit: !0, variables: !19) -!8 = !DISubroutineType(types: !9) -!9 = !{null, !10, !13, !13, !13} -!10 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "NonTrivial", file: !1, line: 1, size: 32, elements: !11, identifier: ".?AUNonTrivial@@") -!11 = !{!12, !14, !18} -!12 = !DIDerivedType(tag: DW_TAG_member, name: "x", scope: !10, file: !1, line: 4, baseType: !13, size: 32) -!13 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) -!14 = !DISubprogram(name: "NonTrivial", scope: !10, file: !1, line: 2, type: !15, isLocal: false, isDefinition: false, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: true) -!15 = !DISubroutineType(cc: DW_CC_BORLAND_thiscall, types: !16) -!16 = !{null, !17} -!17 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !10, size: 32, flags: DIFlagArtificial | DIFlagObjectPointer) -!18 = !DISubprogram(name: "~NonTrivial", scope: !10, file: !1, line: 3, type: !15, isLocal: false, isDefinition: false, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: true) -!19 = !{!20, !21, !22, !23} -!20 = !DILocalVariable(name: "c", arg: 4, scope: !7, file: !1, line: 8, type: !13) -!21 = !DILocalVariable(name: "unused", arg: 3, scope: !7, file: !1, line: 8, type: !13) -!22 = !DILocalVariable(name: "b", arg: 2, scope: !7, file: !1, line: 8, type: !13) -!23 = !DILocalVariable(name: "a", arg: 1, scope: !7, file: !1, line: 8, type: !10) -!24 = !DIExpression() -!25 = !DILocation(line: 8, column: 56, scope: !7) -!26 = !DILocation(line: 8, column: 37, scope: !7) -!27 = !DILocation(line: 8, column: 30, scope: !7) -!28 = !DILocation(line: 9, column: 7, scope: !29) -!29 = distinct !DILexicalBlock(scope: !7, file: !1, line: 9, column: 7) -!30 = !{!31, !31, i64 0} -!31 = !{!"int", !32, i64 0} -!32 = !{!"omnipotent char", !33, i64 0} -!33 = !{!"Simple C++ TBAA"} -!34 = !DILocation(line: 9, column: 7, scope: !7) -!35 = !DILocation(line: 10, column: 7, scope: !36) -!36 = distinct !DILexicalBlock(scope: !29, file: !1, line: 9, column: 10) -!37 = !DILocation(line: 10, column: 5, scope: !36) -!38 = !DILocation(line: 11, column: 3, scope: !36) -!39 = !DILocation(line: 12, column: 9, scope: !40) -!40 = distinct !DILexicalBlock(scope: !29, file: !1, line: 11, column: 10) -!41 = !{!42, !31, i64 0} -!42 = !{!"?AUNonTrivial@@", !31, i64 0} -!43 = !DILocation(line: 12, column: 5, scope: !40) -!44 = !DILocation(line: 15, column: 1, scope: !7)