1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; RUN: opt < %s -S -simplifycfg | FileCheck %s 3 4; This test case was generated from speculate-dbgvalue.c: 5; 6; int test1(int getdirt, int dirt) { 7; int result = 100; 8; if (getdirt != 0) 9; result = dirt; 10; return result; 11; } 12; 13; using 14; clang speculate-dbgvalue.c -S -emit-llvm -g -O3 -mllvm -disable-llvm-optzns -o - | opt -mem2reg -S 15 16 17; Function Attrs: nounwind uwtable 18define i32 @test1(i32 %getdirt, i32 %dirt) #0 !dbg !7 { 19; CHECK-LABEL: @test1( 20; CHECK-NEXT: entry: 21; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 [[GETDIRT:%.*]], metadata !12, metadata !DIExpression()), !dbg !15 22; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 [[DIRT:%.*]], metadata !13, metadata !DIExpression()), !dbg !16 23; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 100, metadata !14, metadata !DIExpression()), !dbg !17 24; CHECK-NEXT: [[CMP:%.*]] = icmp ne i32 [[GETDIRT]], 0, !dbg !18 25; *** We used to get an incorrect "call void @llvm.dbg.value(metadata i32 [[DIRT]], metadata !14, metadata !DIExpression()), !dbg !17" here, before the select. *** 26; CHECK-NOT: call void @llvm.dbg.value(metadata i32 [[DIRT]], metadata !14 27; CHECK-NEXT: [[RESULT:%.*]] = select i1 [[CMP]], i32 [[DIRT]], i32 100, !dbg !20 28; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 [[RESULT]], metadata !14, metadata !DIExpression()), !dbg !17 29; CHECK-NEXT: ret i32 [[RESULT]], !dbg !21 30; CHECK: !12 = !DILocalVariable(name: "getdirt" 31; CHECK: !13 = !DILocalVariable(name: "dirt" 32; CHECK: !14 = !DILocalVariable(name: "result" 33; 34entry: 35 call void @llvm.dbg.value(metadata i32 %getdirt, metadata !12, metadata !DIExpression()), !dbg !15 36 call void @llvm.dbg.value(metadata i32 %dirt, metadata !13, metadata !DIExpression()), !dbg !16 37 call void @llvm.dbg.value(metadata i32 100, metadata !14, metadata !DIExpression()), !dbg !17 38 %cmp = icmp ne i32 %getdirt, 0, !dbg !18 39 br i1 %cmp, label %if.then, label %if.end, !dbg !20 40 41if.then: ; preds = %entry 42 call void @llvm.dbg.value(metadata i32 %dirt, metadata !14, metadata !DIExpression()), !dbg !17 43 br label %if.end, !dbg !21 44 45if.end: ; preds = %if.then, %entry 46 %result.0 = phi i32 [ %dirt, %if.then ], [ 100, %entry ] 47 call void @llvm.dbg.value(metadata i32 %result.0, metadata !14, metadata !DIExpression()), !dbg !17 48 ret i32 %result.0, !dbg !22 49} 50 51; Function Attrs: nounwind readnone speculatable 52declare void @llvm.dbg.value(metadata, metadata, metadata) #1 53 54attributes #0 = { nounwind uwtable } 55attributes #1 = { nounwind readnone speculatable } 56 57!llvm.dbg.cu = !{!0} 58!llvm.module.flags = !{!3, !4, !5} 59!llvm.ident = !{!6} 60 61!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 6.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2) 62!1 = !DIFile(filename: "speculate-dbgvalue.c", directory: "/foo") 63!2 = !{} 64!3 = !{i32 2, !"Dwarf Version", i32 4} 65!4 = !{i32 2, !"Debug Info Version", i32 3} 66!5 = !{i32 1, !"wchar_size", i32 4} 67!6 = !{!"clang version 6.0.0"} 68!7 = distinct !DISubprogram(name: "test1", scope: !1, file: !1, line: 1, type: !8, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !11) 69!8 = !DISubroutineType(types: !9) 70!9 = !{!10, !10, !10} 71!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 72!11 = !{!12, !13, !14} 73!12 = !DILocalVariable(name: "getdirt", arg: 1, scope: !7, file: !1, line: 1, type: !10) 74!13 = !DILocalVariable(name: "dirt", arg: 2, scope: !7, file: !1, line: 1, type: !10) 75!14 = !DILocalVariable(name: "result", scope: !7, file: !1, line: 2, type: !10) 76!15 = !DILocation(line: 1, column: 15, scope: !7) 77!16 = !DILocation(line: 1, column: 28, scope: !7) 78!17 = !DILocation(line: 2, column: 7, scope: !7) 79!18 = !DILocation(line: 3, column: 15, scope: !19) 80!19 = distinct !DILexicalBlock(scope: !7, file: !1, line: 3, column: 7) 81!20 = !DILocation(line: 3, column: 7, scope: !7) 82!21 = !DILocation(line: 4, column: 5, scope: !19) 83!22 = !DILocation(line: 5, column: 3, scope: !7) 84