Index: llvm/trunk/include/llvm/CodeGen/SelectionDAG.h =================================================================== --- llvm/trunk/include/llvm/CodeGen/SelectionDAG.h +++ llvm/trunk/include/llvm/CodeGen/SelectionDAG.h @@ -1242,6 +1242,11 @@ unsigned FI, const DebugLoc &DL, unsigned O); + /// Creates a VReg SDDbgValue node. + SDDbgValue *getVRegDbgValue(DIVariable *Var, DIExpression *Expr, + unsigned VReg, bool IsIndirect, + const DebugLoc &DL, unsigned O); + /// Transfer debug values from one node to another, while optionally /// generating fragment expressions for split-up values. If \p InvalidateDbg /// is set, debug values are invalidated after they are transferred. Index: llvm/trunk/lib/CodeGen/SelectionDAG/InstrEmitter.cpp =================================================================== --- llvm/trunk/lib/CodeGen/SelectionDAG/InstrEmitter.cpp +++ llvm/trunk/lib/CodeGen/SelectionDAG/InstrEmitter.cpp @@ -720,6 +720,8 @@ else AddOperand(MIB, Op, (*MIB).getNumOperands(), &II, VRBaseMap, /*IsDebug=*/true, /*IsClone=*/false, /*IsCloned=*/false); + } else if (SD->getKind() == SDDbgValue::VREG) { + MIB.addReg(SD->getVReg(), RegState::Debug); } else if (SD->getKind() == SDDbgValue::CONST) { const Value *V = SD->getConst(); if (const ConstantInt *CI = dyn_cast(V)) { Index: llvm/trunk/lib/CodeGen/SelectionDAG/SDNodeDbgValue.h =================================================================== --- llvm/trunk/lib/CodeGen/SelectionDAG/SDNodeDbgValue.h +++ llvm/trunk/lib/CodeGen/SelectionDAG/SDNodeDbgValue.h @@ -32,7 +32,8 @@ enum DbgValueKind { SDNODE = 0, ///< Value is the result of an expression. CONST = 1, ///< Value is a constant. - FRAMEIX = 2 ///< Value is contents of a stack location. + FRAMEIX = 2, ///< Value is contents of a stack location. + VREG = 3 ///< Value is a virtual register. }; private: union { @@ -42,6 +43,7 @@ } s; const Value *Const; ///< Valid for constants. unsigned FrameIx; ///< Valid for stack objects. + unsigned VReg; ///< Valid for registers. } u; DIVariable *Var; DIExpression *Expr; @@ -77,6 +79,14 @@ u.FrameIx = FI; } + /// Constructor for virtual registers. + SDDbgValue(DIVariable *Var, DIExpression *Expr, unsigned VReg, bool indir, + DebugLoc dl, unsigned O) + : Var(Var), Expr(Expr), DL(std::move(dl)), Order(O), IsIndirect(indir) { + kind = VREG; + u.VReg = VReg; + } + /// Returns the kind. DbgValueKind getKind() const { return kind; } @@ -98,6 +108,9 @@ /// Returns the FrameIx for a stack object unsigned getFrameIx() const { assert (kind==FRAMEIX); return u.FrameIx; } + /// Returns the Virtual Register for a VReg + unsigned getVReg() const { assert (kind==VREG); return u.VReg; } + /// Returns whether this is an indirect value. bool isIndirect() const { return IsIndirect; } Index: llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp =================================================================== --- llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp +++ llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp @@ -7310,6 +7310,17 @@ return new (DbgInfo->getAlloc()) SDDbgValue(Var, Expr, FI, DL, O); } +/// VReg +SDDbgValue *SelectionDAG::getVRegDbgValue(DIVariable *Var, + DIExpression *Expr, + unsigned VReg, bool IsIndirect, + const DebugLoc &DL, unsigned O) { + assert(cast(Var)->isValidLocationForIntrinsic(DL) && + "Expected inlined-at fields to agree"); + return new (DbgInfo->getAlloc()) SDDbgValue(Var, Expr, VReg, IsIndirect, DL, + O); +} + void SelectionDAG::transferDbgValues(SDValue From, SDValue To, unsigned OffsetInBits, unsigned SizeInBits, bool InvalidateDbg) { Index: llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp =================================================================== --- llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp +++ llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp @@ -5254,6 +5254,19 @@ return nullptr; } + // PHI nodes have already been selected, so we should know which VReg that + // is assigns to already. + if (isa(V)) { + auto It = FuncInfo.ValueMap.find(V); + if (It != FuncInfo.ValueMap.end()) { + unsigned Reg = It->second; + SDV = DAG.getVRegDbgValue(Variable, Expression, Reg, false, dl, + SDNodeOrder); + DAG.AddDbgValue(SDV, nullptr, false); + return nullptr; + } + } + // TODO: When we get here we will either drop the dbg.value completely, or // we try to move it forward by letting it dangle for awhile. So we should // probably add an extra DbgValue to the DAG here, with a reference to Index: llvm/trunk/test/DebugInfo/COFF/pieces.ll =================================================================== --- llvm/trunk/test/DebugInfo/COFF/pieces.ll +++ llvm/trunk/test/DebugInfo/COFF/pieces.ll @@ -42,19 +42,20 @@ ; ASM: xorl %esi, %esi ; ASM: .p2align 4, 0x90 ; ASM: .LBB0_3: # %for.body -; ASM: [[ox_start:\.Ltmp[0-9]+]]: +; ASM: [[oy_ox_start:\.Ltmp[0-9]+]]: ; ASM: #DEBUG_VALUE: loop_csr:o <- [DW_OP_LLVM_fragment 0 32] $edi +; ASM: #DEBUG_VALUE: loop_csr:o <- [DW_OP_LLVM_fragment 32 32] $esi ; ASM: .cv_loc 0 1 13 11 # t.c:13:11 ; ASM: movl %edi, %ecx ; ASM: callq g ; ASM: movl %eax, %edi -; ASM: [[oy_start:\.Ltmp[0-9]+]]: +; ASM: [[ox_start:\.Ltmp[0-9]+]]: ; ASM: #DEBUG_VALUE: loop_csr:o <- [DW_OP_LLVM_fragment 0 32] $edi -; ASM: #DEBUG_VALUE: loop_csr:o <- [DW_OP_LLVM_fragment 32 32] $esi ; ASM: .cv_loc 0 1 14 11 # t.c:14:11 ; ASM: movl %esi, %ecx ; ASM: callq g ; ASM: movl %eax, %esi +; ASM: [[oy_start:\.Ltmp[0-9]+]]: ; ASM: #DEBUG_VALUE: loop_csr:o <- [DW_OP_LLVM_fragment 32 32] $esi ; ASM: cmpl n(%rip), %eax ; ASM: jl .LBB0_3 @@ -101,6 +102,8 @@ ; ASM: .asciz "loop_csr" # Function name ; ASM: .short 4414 # Record kind: S_LOCAL ; ASM: .asciz "o" +; ASM: .cv_def_range [[oy_ox_start]] [[ox_start]], "C\021\030\000\000\000\000\000\000\000" +; ASM: .cv_def_range [[oy_ox_start]] [[oy_start]], "C\021\027\000\000\000\004\000\000\000" ; ASM: .cv_def_range [[ox_start]] .Lfunc_end0, "C\021\030\000\000\000\000\000\000\000" ; ASM: .cv_def_range [[oy_start]] [[oy_end]], "C\021\027\000\000\000\004\000\000\000" Index: llvm/trunk/test/DebugInfo/X86/sdag-dbgvalue-phi-use-1.ll =================================================================== --- llvm/trunk/test/DebugInfo/X86/sdag-dbgvalue-phi-use-1.ll +++ llvm/trunk/test/DebugInfo/X86/sdag-dbgvalue-phi-use-1.ll @@ -0,0 +1,178 @@ +; RUN: llc -start-after=codegenprepare -stop-before expand-isel-pseudos -o - %s | FileCheck %s + +; This test case was generated from the following debug.c program, +; using: clang debug.c -g -O1 -S -o dbg_value_phi_isel1.ll -emit-llvm +; -------------------------------------- +; int end = 10; +; +; int main() { +; int x = 9; +; int y = 13; +; for (int u = 0; u < end; ++u) { +; x += y; +; y = y * 3; +; } +; +; volatile int arr[80]; +; for (int q = 0; q < 64; ++q) { +; arr[q] = q + 3; +; } +; +; return x; +; } +; -------------------------------------- +; + +; ModuleID = 'debug.c' +source_filename = "debug.c" +target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" +target triple = "x86_64-unknown-linux-gnu" + +@end = dso_local local_unnamed_addr global i32 10, align 4, !dbg !0 + +; Function Attrs: nounwind uwtable +define dso_local i32 @main() local_unnamed_addr #0 !dbg !11 { +; CHECK-LABEL: name: main +entry: + %arr = alloca [80 x i32], align 16 + call void @llvm.dbg.value(metadata i32 9, metadata !15, metadata !DIExpression()), !dbg !26 + call void @llvm.dbg.value(metadata i32 13, metadata !16, metadata !DIExpression()), !dbg !27 + call void @llvm.dbg.value(metadata i32 0, metadata !17, metadata !DIExpression()), !dbg !28 + %0 = load i32, i32* @end, align 4, !dbg !29, !tbaa !31 + %cmp20 = icmp sgt i32 %0, 0, !dbg !35 + br i1 %cmp20, label %for.body.lr.ph, label %for.cond.cleanup, !dbg !36 + +for.body.lr.ph: ; preds = %entry + %1 = load i32, i32* @end, align 4, !tbaa !31 + br label %for.body, !dbg !36 + +for.cond.cleanup: ; preds = %for.body, %entry +; CHECK-LABEL: bb.{{.*}}.for.cond.cleanup: +; CHECK: [[REG1:%[0-9]+]]:gr32 = PHI +; CHECK-NEXT: DBG_VALUE debug-use [[REG1]] + %x.0.lcssa = phi i32 [ 9, %entry ], [ %add, %for.body ] + call void @llvm.dbg.value(metadata i32 %x.0.lcssa, metadata !15, metadata !DIExpression()), !dbg !26 + %2 = bitcast [80 x i32]* %arr to i8*, !dbg !37 + call void @llvm.lifetime.start.p0i8(i64 320, i8* nonnull %2) #3, !dbg !37 + call void @llvm.dbg.declare(metadata [80 x i32]* %arr, metadata !19, metadata !DIExpression()), !dbg !38 + call void @llvm.dbg.value(metadata i32 0, metadata !24, metadata !DIExpression()), !dbg !39 + br label %for.body4, !dbg !40 + +for.body: ; preds = %for.body.lr.ph, %for.body +; CHECK-LABEL: bb.{{.*}}.for.body: +; CHECK: [[REG2:%[0-9]+]]:gr32 = PHI +; CHECK-NEXT: [[REG3:%[0-9]+]]:gr32 = PHI +; CHECK-NEXT: [[REG4:%[0-9]+]]:gr32 = PHI +; CHECK-NEXT: DBG_VALUE debug-use [[REG2]] +; CHECK-NEXT: DBG_VALUE debug-use [[REG3]] +; CHECK-NEXT: DBG_VALUE debug-use [[REG4]] + %u.023 = phi i32 [ 0, %for.body.lr.ph ], [ %inc, %for.body ] + %y.022 = phi i32 [ 13, %for.body.lr.ph ], [ %mul, %for.body ] + %x.021 = phi i32 [ 9, %for.body.lr.ph ], [ %add, %for.body ] + call void @llvm.dbg.value(metadata i32 %u.023, metadata !17, metadata !DIExpression()), !dbg !28 + call void @llvm.dbg.value(metadata i32 %y.022, metadata !16, metadata !DIExpression()), !dbg !27 + call void @llvm.dbg.value(metadata i32 %x.021, metadata !15, metadata !DIExpression()), !dbg !26 + %add = add nuw nsw i32 %y.022, %x.021, !dbg !41 + %mul = mul nsw i32 %y.022, 3, !dbg !43 + %inc = add nuw nsw i32 %u.023, 1, !dbg !44 + call void @llvm.dbg.value(metadata i32 %inc, metadata !17, metadata !DIExpression()), !dbg !28 + call void @llvm.dbg.value(metadata i32 %mul, metadata !16, metadata !DIExpression()), !dbg !27 + call void @llvm.dbg.value(metadata i32 %add, metadata !15, metadata !DIExpression()), !dbg !26 + %cmp = icmp slt i32 %inc, %1, !dbg !35 + br i1 %cmp, label %for.body, label %for.cond.cleanup, !dbg !36, !llvm.loop !45 + +for.cond.cleanup3: ; preds = %for.body4 + call void @llvm.lifetime.end.p0i8(i64 320, i8* nonnull %2) #3, !dbg !47 + ret i32 %x.0.lcssa, !dbg !48 + +for.body4: ; preds = %for.body4, %for.cond.cleanup + %indvars.iv = phi i64 [ 0, %for.cond.cleanup ], [ %indvars.iv.next, %for.body4 ] + call void @llvm.dbg.value(metadata i64 %indvars.iv, metadata !24, metadata !DIExpression()), !dbg !39 + %arrayidx = getelementptr inbounds [80 x i32], [80 x i32]* %arr, i64 0, i64 %indvars.iv, !dbg !49 + %3 = trunc i64 %indvars.iv to i32, !dbg !52 + %4 = add i32 %3, 3, !dbg !52 + store volatile i32 %4, i32* %arrayidx, align 4, !dbg !52, !tbaa !31 + %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !53 + call void @llvm.dbg.value(metadata i32 undef, metadata !24, metadata !DIExpression(DW_OP_plus_uconst, 1, DW_OP_stack_value)), !dbg !39 + %exitcond = icmp eq i64 %indvars.iv.next, 64, !dbg !54 + br i1 %exitcond, label %for.cond.cleanup3, label %for.body4, !dbg !40, !llvm.loop !55 +} + +; Function Attrs: argmemonly nounwind +declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1 + +; Function Attrs: nounwind readnone speculatable +declare void @llvm.dbg.declare(metadata, metadata, metadata) #2 + +; Function Attrs: argmemonly nounwind +declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) #1 + +; Function Attrs: nounwind readnone speculatable +declare void @llvm.dbg.value(metadata, metadata, metadata) #2 + +attributes #0 = { nounwind uwtable } +attributes #1 = { argmemonly nounwind } +attributes #2 = { nounwind readnone speculatable } +attributes #3 = { nounwind } + +!llvm.dbg.cu = !{!2} +!llvm.module.flags = !{!7, !8, !9} +!llvm.ident = !{!10} + +!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression()) +!1 = distinct !DIGlobalVariable(name: "end", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: true) +!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 7.0.0 (x)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5) +!3 = !DIFile(filename: "debug.c", directory: "") +!4 = !{} +!5 = !{!0} +!6 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) +!7 = !{i32 2, !"Dwarf Version", i32 4} +!8 = !{i32 2, !"Debug Info Version", i32 3} +!9 = !{i32 1, !"wchar_size", i32 4} +!10 = !{!"clang version 7.0.0 (x)"} +!11 = distinct !DISubprogram(name: "main", scope: !3, file: !3, line: 3, type: !12, isLocal: false, isDefinition: true, scopeLine: 3, isOptimized: true, unit: !2, variables: !14) +!12 = !DISubroutineType(types: !13) +!13 = !{!6} +!14 = !{!15, !16, !17, !19, !24} +!15 = !DILocalVariable(name: "x", scope: !11, file: !3, line: 4, type: !6) +!16 = !DILocalVariable(name: "y", scope: !11, file: !3, line: 5, type: !6) +!17 = !DILocalVariable(name: "u", scope: !18, file: !3, line: 6, type: !6) +!18 = distinct !DILexicalBlock(scope: !11, file: !3, line: 6, column: 3) +!19 = !DILocalVariable(name: "arr", scope: !11, file: !3, line: 11, type: !20) +!20 = !DICompositeType(tag: DW_TAG_array_type, baseType: !21, size: 2560, elements: !22) +!21 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !6) +!22 = !{!23} +!23 = !DISubrange(count: 80) +!24 = !DILocalVariable(name: "q", scope: !25, file: !3, line: 12, type: !6) +!25 = distinct !DILexicalBlock(scope: !11, file: !3, line: 12, column: 3) +!26 = !DILocation(line: 4, column: 7, scope: !11) +!27 = !DILocation(line: 5, column: 7, scope: !11) +!28 = !DILocation(line: 6, column: 12, scope: !18) +!29 = !DILocation(line: 6, column: 23, scope: !30) +!30 = distinct !DILexicalBlock(scope: !18, file: !3, line: 6, column: 3) +!31 = !{!32, !32, i64 0} +!32 = !{!"int", !33, i64 0} +!33 = !{!"omnipotent char", !34, i64 0} +!34 = !{!"Simple C/C++ TBAA"} +!35 = !DILocation(line: 6, column: 21, scope: !30) +!36 = !DILocation(line: 6, column: 3, scope: !18) +!37 = !DILocation(line: 11, column: 3, scope: !11) +!38 = !DILocation(line: 11, column: 16, scope: !11) +!39 = !DILocation(line: 12, column: 12, scope: !25) +!40 = !DILocation(line: 12, column: 3, scope: !25) +!41 = !DILocation(line: 7, column: 7, scope: !42) +!42 = distinct !DILexicalBlock(scope: !30, file: !3, line: 6, column: 33) +!43 = !DILocation(line: 8, column: 11, scope: !42) +!44 = !DILocation(line: 6, column: 28, scope: !30) +!45 = distinct !{!45, !36, !46} +!46 = !DILocation(line: 9, column: 3, scope: !18) +!47 = !DILocation(line: 17, column: 1, scope: !11) +!48 = !DILocation(line: 16, column: 3, scope: !11) +!49 = !DILocation(line: 13, column: 5, scope: !50) +!50 = distinct !DILexicalBlock(scope: !51, file: !3, line: 12, column: 32) +!51 = distinct !DILexicalBlock(scope: !25, file: !3, line: 12, column: 3) +!52 = !DILocation(line: 13, column: 12, scope: !50) +!53 = !DILocation(line: 12, column: 27, scope: !51) +!54 = !DILocation(line: 12, column: 21, scope: !51) +!55 = distinct !{!55, !40, !56} +!56 = !DILocation(line: 14, column: 3, scope: !25) Index: llvm/trunk/test/DebugInfo/X86/sdag-dbgvalue-phi-use-2.ll =================================================================== --- llvm/trunk/test/DebugInfo/X86/sdag-dbgvalue-phi-use-2.ll +++ llvm/trunk/test/DebugInfo/X86/sdag-dbgvalue-phi-use-2.ll @@ -0,0 +1,171 @@ +; RUN: llc -start-after=codegenprepare -stop-before expand-isel-pseudos -o - %s | FileCheck %s + +; This test case is a modified version of dbg_value_phi_isel1.ll +; where the llvm.dbg.value nodes in for.body has been moved. + +; ModuleID = 'debug.c' +source_filename = "debug.c" +target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" +target triple = "x86_64-unknown-linux-gnu" + +@end = dso_local local_unnamed_addr global i32 10, align 4, !dbg !0 + +; Function Attrs: nounwind uwtable +define dso_local i32 @main() local_unnamed_addr #0 !dbg !11 { +entry: + %arr = alloca [80 x i32], align 16 + call void @llvm.dbg.value(metadata i32 9, metadata !15, metadata !DIExpression()), !dbg !26 + call void @llvm.dbg.value(metadata i32 13, metadata !16, metadata !DIExpression()), !dbg !27 + call void @llvm.dbg.value(metadata i32 0, metadata !17, metadata !DIExpression()), !dbg !28 + %0 = load i32, i32* @end, align 4, !dbg !29, !tbaa !31 + %cmp20 = icmp sgt i32 %0, 0, !dbg !35 + br i1 %cmp20, label %for.body.lr.ph, label %for.cond.cleanup, !dbg !36 + +for.body.lr.ph: ; preds = %entry + %1 = load i32, i32* @end, align 4, !tbaa !31 + br label %for.body, !dbg !36 + +for.cond.cleanup: ; preds = %for.body, %entry +; CHECK-LABEL: bb.{{.*}}.for.cond.cleanup: +; CHECK: [[REG1:%[0-9]+]]:gr32 = PHI +; CHECK-NEXT: DBG_VALUE debug-use [[REG1]] + %x.0.lcssa = phi i32 [ 9, %entry ], [ %add, %for.body ] + call void @llvm.dbg.value(metadata i32 %x.0.lcssa, metadata !15, metadata !DIExpression()), !dbg !26 + %2 = bitcast [80 x i32]* %arr to i8*, !dbg !37 + call void @llvm.lifetime.start.p0i8(i64 320, i8* nonnull %2) #3, !dbg !37 + call void @llvm.dbg.declare(metadata [80 x i32]* %arr, metadata !19, metadata !DIExpression()), !dbg !38 + call void @llvm.dbg.value(metadata i32 0, metadata !24, metadata !DIExpression()), !dbg !39 + br label %for.body4, !dbg !40 + +for.body: ; preds = %for.body.lr.ph, %for.body +; CHECK-LABEL: bb.{{.*}}.for.body: +; CHECK: [[REG2:%[0-9]+]]:gr32 = PHI +; CHECK-NEXT: [[REG3:%[0-9]+]]:gr32 = PHI +; CHECK-NEXT: [[REG4:%[0-9]+]]:gr32 = PHI +; CHECK-NEXT: DBG_VALUE debug-use [[REG3]], debug-use $noreg, !16 +; CHECK-NEXT: DBG_VALUE 555, debug-use $noreg, !17 +; XXX: Shouldn't the following DBG_VALUE be placed after the add (ADD32rr). +; CHECK-NEXT: DBG_VALUE debug-use [[REG2]], debug-use $noreg, !17 +; CHECK-NEXT: ADD32rr +; XXX: Shouldn't the following DBG_VALUE be placed after the mul (LEA etc). +; CHECK-NEXT: DBG_VALUE 777, debug-use $noreg, !17 +; CHECK: INC32r +; XXX: Shouldn't the following DBG_VALUE be placed after the icmp (the non-dead implicit def of $eflags) +; CHECK: DBG_VALUE debug-use [[REG4]] +; CHECK-NEXT: implicit-def $eflags + %u.023 = phi i32 [ 0, %for.body.lr.ph ], [ %inc, %for.body ] + %y.022 = phi i32 [ 13, %for.body.lr.ph ], [ %mul, %for.body ] + %x.021 = phi i32 [ 9, %for.body.lr.ph ], [ %add, %for.body ] + call void @llvm.dbg.value(metadata i32 %y.022, metadata !16, metadata !DIExpression()), !dbg !27 + ; This dbg.value has been manually added compared to dbg_value_phi_isel1.ll + call void @llvm.dbg.value(metadata i32 555, metadata !17, metadata !DIExpression()), !dbg !28 + %add = add nuw nsw i32 %y.022, %x.021, !dbg !41 + ; This dbg.value has been manually moved compared to dbg_value_phi_isel1.ll + call void @llvm.dbg.value(metadata i32 %u.023, metadata !17, metadata !DIExpression()), !dbg !28 + %mul = mul nsw i32 %y.022, 3, !dbg !43 + ; This dbg.value has been manually added compared to dbg_value_phi_isel1.ll + call void @llvm.dbg.value(metadata i32 777, metadata !17, metadata !DIExpression()), !dbg !28 + %inc = add nuw nsw i32 %u.023, 1, !dbg !44 + call void @llvm.dbg.value(metadata i32 %inc, metadata !17, metadata !DIExpression()), !dbg !28 + call void @llvm.dbg.value(metadata i32 %mul, metadata !16, metadata !DIExpression()), !dbg !27 + call void @llvm.dbg.value(metadata i32 %add, metadata !15, metadata !DIExpression()), !dbg !26 + %cmp = icmp slt i32 %inc, %1, !dbg !35 + ; This dbg.value has been manually moved compared to dbg_value_phi_isel1.ll + call void @llvm.dbg.value(metadata i32 %x.021, metadata !15, metadata !DIExpression()), !dbg !26 + br i1 %cmp, label %for.body, label %for.cond.cleanup, !dbg !36, !llvm.loop !45 + +for.cond.cleanup3: ; preds = %for.body4 + call void @llvm.lifetime.end.p0i8(i64 320, i8* nonnull %2) #3, !dbg !47 + ret i32 %x.0.lcssa, !dbg !48 + +for.body4: ; preds = %for.body4, %for.cond.cleanup + %indvars.iv = phi i64 [ 0, %for.cond.cleanup ], [ %indvars.iv.next, %for.body4 ] + call void @llvm.dbg.value(metadata i64 %indvars.iv, metadata !24, metadata !DIExpression()), !dbg !39 + %arrayidx = getelementptr inbounds [80 x i32], [80 x i32]* %arr, i64 0, i64 %indvars.iv, !dbg !49 + %3 = trunc i64 %indvars.iv to i32, !dbg !52 + %4 = add i32 %3, 3, !dbg !52 + store volatile i32 %4, i32* %arrayidx, align 4, !dbg !52, !tbaa !31 + %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !53 + call void @llvm.dbg.value(metadata i32 undef, metadata !24, metadata !DIExpression(DW_OP_plus_uconst, 1, DW_OP_stack_value)), !dbg !39 + %exitcond = icmp eq i64 %indvars.iv.next, 64, !dbg !54 + br i1 %exitcond, label %for.cond.cleanup3, label %for.body4, !dbg !40, !llvm.loop !55 +} + +; Function Attrs: argmemonly nounwind +declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1 + +; Function Attrs: nounwind readnone speculatable +declare void @llvm.dbg.declare(metadata, metadata, metadata) #2 + +; Function Attrs: argmemonly nounwind +declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) #1 + +; Function Attrs: nounwind readnone speculatable +declare void @llvm.dbg.value(metadata, metadata, metadata) #2 + +attributes #0 = { nounwind uwtable } +attributes #1 = { argmemonly nounwind } +attributes #2 = { nounwind readnone speculatable } +attributes #3 = { nounwind } + +!llvm.dbg.cu = !{!2} +!llvm.module.flags = !{!7, !8, !9} +!llvm.ident = !{!10} + +!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression()) +!1 = distinct !DIGlobalVariable(name: "end", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: true) +!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 7.0.0 (x)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5) +!3 = !DIFile(filename: "debug.c", directory: "") +!4 = !{} +!5 = !{!0} +!6 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) +!7 = !{i32 2, !"Dwarf Version", i32 4} +!8 = !{i32 2, !"Debug Info Version", i32 3} +!9 = !{i32 1, !"wchar_size", i32 4} +!10 = !{!"clang version 7.0.0 (x)"} +!11 = distinct !DISubprogram(name: "main", scope: !3, file: !3, line: 3, type: !12, isLocal: false, isDefinition: true, scopeLine: 3, isOptimized: true, unit: !2, variables: !14) +!12 = !DISubroutineType(types: !13) +!13 = !{!6} +!14 = !{!15, !16, !17, !19, !24} +!15 = !DILocalVariable(name: "x", scope: !11, file: !3, line: 4, type: !6) +!16 = !DILocalVariable(name: "y", scope: !11, file: !3, line: 5, type: !6) +!17 = !DILocalVariable(name: "u", scope: !18, file: !3, line: 6, type: !6) +!18 = distinct !DILexicalBlock(scope: !11, file: !3, line: 6, column: 3) +!19 = !DILocalVariable(name: "arr", scope: !11, file: !3, line: 11, type: !20) +!20 = !DICompositeType(tag: DW_TAG_array_type, baseType: !21, size: 2560, elements: !22) +!21 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !6) +!22 = !{!23} +!23 = !DISubrange(count: 80) +!24 = !DILocalVariable(name: "q", scope: !25, file: !3, line: 12, type: !6) +!25 = distinct !DILexicalBlock(scope: !11, file: !3, line: 12, column: 3) +!26 = !DILocation(line: 4, column: 7, scope: !11) +!27 = !DILocation(line: 5, column: 7, scope: !11) +!28 = !DILocation(line: 6, column: 12, scope: !18) +!29 = !DILocation(line: 6, column: 23, scope: !30) +!30 = distinct !DILexicalBlock(scope: !18, file: !3, line: 6, column: 3) +!31 = !{!32, !32, i64 0} +!32 = !{!"int", !33, i64 0} +!33 = !{!"omnipotent char", !34, i64 0} +!34 = !{!"Simple C/C++ TBAA"} +!35 = !DILocation(line: 6, column: 21, scope: !30) +!36 = !DILocation(line: 6, column: 3, scope: !18) +!37 = !DILocation(line: 11, column: 3, scope: !11) +!38 = !DILocation(line: 11, column: 16, scope: !11) +!39 = !DILocation(line: 12, column: 12, scope: !25) +!40 = !DILocation(line: 12, column: 3, scope: !25) +!41 = !DILocation(line: 7, column: 7, scope: !42) +!42 = distinct !DILexicalBlock(scope: !30, file: !3, line: 6, column: 33) +!43 = !DILocation(line: 8, column: 11, scope: !42) +!44 = !DILocation(line: 6, column: 28, scope: !30) +!45 = distinct !{!45, !36, !46} +!46 = !DILocation(line: 9, column: 3, scope: !18) +!47 = !DILocation(line: 17, column: 1, scope: !11) +!48 = !DILocation(line: 16, column: 3, scope: !11) +!49 = !DILocation(line: 13, column: 5, scope: !50) +!50 = distinct !DILexicalBlock(scope: !51, file: !3, line: 12, column: 32) +!51 = distinct !DILexicalBlock(scope: !25, file: !3, line: 12, column: 3) +!52 = !DILocation(line: 13, column: 12, scope: !50) +!53 = !DILocation(line: 12, column: 27, scope: !51) +!54 = !DILocation(line: 12, column: 21, scope: !51) +!55 = distinct !{!55, !40, !56} +!56 = !DILocation(line: 14, column: 3, scope: !25)