1; RUN: llc -mtriple=x86_64-linux < %s | FileCheck %s 2; RUN: opt -strip-debug < %s | llc -mtriple=x86_64-linux | FileCheck %s 3; http://llvm.org/PR19051. Minor code-motion difference with -g. 4; Presence of debug info shouldn't affect the codegen. Make sure that 5; we generated the same code sequence with and without debug info. 6; 7; CHECK: callq _Z3fooPcjPKc 8; CHECK: callq _Z3fooPcjPKc 9; CHECK: movq %rsp, %rdi 10; CHECK: testl {{%[a-z]+}}, {{%[a-z]+}} 11; CHECK: je .LBB0_4 12; CHECK: movl $4, %esi 13 14; Regenerate test with this command: 15; clang++ -emit-llvm -S -O2 -g 16; from this source: 17; 18; extern void foo(char *dst,unsigned siz,const char *src); 19; extern const char * i2str(int); 20; 21; struct AAA3 { 22; AAA3(const char *value) { foo(text,sizeof(text),value);} 23; void operator=(const char *value) { foo(text,sizeof(text),value);} 24; operator const char*() const { return text;} 25; char text[4]; 26; }; 27; 28; void bar (int param1,int param2) { 29; const char * temp(0); 30; 31; if (param2) { 32; temp = i2str(param2); 33; } 34; AAA3 var1(""); 35; AAA3 var2(""); 36; 37; if (param1) 38; var2 = "+"; 39; else 40; var2 = "-"; 41; var1 = ""; 42; } 43 44%struct.AAA3 = type { [4 x i8] } 45 46@.str = private unnamed_addr constant [1 x i8] zeroinitializer, align 1 47@.str.1 = private unnamed_addr constant [2 x i8] c"+\00", align 1 48@.str.2 = private unnamed_addr constant [2 x i8] c"-\00", align 1 49 50; Function Attrs: uwtable 51define void @_Z3barii(i32 %param1, i32 %param2) #0 !dbg !24 { 52entry: 53 %var1 = alloca %struct.AAA3, align 8 54 %var2 = alloca %struct.AAA3, align 8 55 tail call void @llvm.dbg.value(metadata i32 %param1, i64 0, metadata !29, metadata !46), !dbg !47 56 tail call void @llvm.dbg.value(metadata i32 %param2, i64 0, metadata !30, metadata !46), !dbg !48 57 tail call void @llvm.dbg.value(metadata ptr null, i64 0, metadata !31, metadata !46), !dbg !49 58 %tobool = icmp eq i32 %param2, 0, !dbg !50 59 br i1 %tobool, label %if.end, label %if.then, !dbg !52 60 61if.then: ; preds = %entry 62 %call = tail call ptr @_Z5i2stri(i32 %param2), !dbg !53 63 tail call void @llvm.dbg.value(metadata ptr %call, i64 0, metadata !31, metadata !46), !dbg !49 64 br label %if.end, !dbg !55 65 66if.end: ; preds = %entry, %if.then 67 call void @llvm.lifetime.start.p0(i64 4, ptr %var1) #4, !dbg !56 68 tail call void @llvm.dbg.value(metadata ptr %var1, i64 0, metadata !32, metadata !57), !dbg !58 69 tail call void @llvm.dbg.value(metadata ptr %var1, i64 0, metadata !36, metadata !46), !dbg !59 70 tail call void @llvm.dbg.value(metadata ptr @.str, i64 0, metadata !38, metadata !46), !dbg !62 71 call void @_Z3fooPcjPKc(ptr %var1, i32 4, ptr nonnull @.str), !dbg !63 72 call void @llvm.lifetime.start.p0(i64 4, ptr %var2) #4, !dbg !65 73 call void @llvm.dbg.value(metadata ptr %var2, i64 0, metadata !33, metadata !57), !dbg !66 74 call void @llvm.dbg.value(metadata ptr %var2, i64 0, metadata !36, metadata !46), !dbg !67 75 call void @llvm.dbg.value(metadata ptr @.str, i64 0, metadata !38, metadata !46), !dbg !69 76 call void @_Z3fooPcjPKc(ptr %var2, i32 4, ptr nonnull @.str), !dbg !70 77 %tobool1 = icmp eq i32 %param1, 0, !dbg !71 78 call void @llvm.dbg.value(metadata ptr %var2, i64 0, metadata !33, metadata !57), !dbg !66 79 call void @llvm.dbg.value(metadata ptr %var2, i64 0, metadata !41, metadata !46), !dbg !73 80 br i1 %tobool1, label %if.else, label %if.then2, !dbg !75 81 82if.then2: ; preds = %if.end 83 call void @llvm.dbg.value(metadata ptr @.str.1, i64 0, metadata !42, metadata !46), !dbg !76 84 call void @_Z3fooPcjPKc(ptr %var2, i32 4, ptr nonnull @.str.1), !dbg !78 85 br label %if.end3, !dbg !79 86 87if.else: ; preds = %if.end 88 call void @llvm.dbg.value(metadata ptr @.str.2, i64 0, metadata !42, metadata !46), !dbg !80 89 call void @_Z3fooPcjPKc(ptr %var2, i32 4, ptr nonnull @.str.2), !dbg !81 90 br label %if.end3 91 92if.end3: ; preds = %if.else, %if.then2 93 call void @llvm.dbg.value(metadata ptr %var1, i64 0, metadata !32, metadata !57), !dbg !58 94 call void @llvm.dbg.value(metadata ptr %var1, i64 0, metadata !41, metadata !46), !dbg !82 95 call void @llvm.dbg.value(metadata ptr @.str, i64 0, metadata !42, metadata !46), !dbg !84 96 call void @_Z3fooPcjPKc(ptr %var1, i32 4, ptr nonnull @.str), !dbg !85 97 call void @llvm.lifetime.end.p0(i64 4, ptr %var2) #4, !dbg !86 98 call void @llvm.lifetime.end.p0(i64 4, ptr %var1) #4, !dbg !87 99 ret void, !dbg !86 100} 101 102; Function Attrs: argmemonly nounwind 103declare void @llvm.lifetime.start.p0(i64, ptr nocapture) #1 104 105declare ptr @_Z5i2stri(i32) #2 106 107; Function Attrs: argmemonly nounwind 108declare void @llvm.lifetime.end.p0(i64, ptr nocapture) #1 109 110declare void @_Z3fooPcjPKc(ptr, i32, ptr) #2 111 112; Function Attrs: nounwind readnone 113declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #3 114 115attributes #0 = { uwtable "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="none" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2" "unsafe-fp-math"="false" "use-soft-float"="false" } 116attributes #1 = { argmemonly nounwind } 117attributes #2 = { "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="none" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2" "unsafe-fp-math"="false" "use-soft-float"="false" } 118attributes #3 = { nounwind readnone } 119attributes #4 = { nounwind } 120 121!llvm.dbg.cu = !{!0} 122!llvm.module.flags = !{!43, !44} 123!llvm.ident = !{!45} 124 125!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.8.0 (trunk 255993) (llvm/trunk 256074)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3) 126!1 = !DIFile(filename: "test.cpp", directory: "/mnt/extra") 127!2 = !{} 128!3 = !{!4} 129!4 = !DICompositeType(tag: DW_TAG_structure_type, name: "AAA3", file: !1, line: 4, size: 32, align: 8, elements: !5, identifier: "_ZTS4AAA3") 130!5 = !{!6, !11, !17, !18} 131!6 = !DIDerivedType(tag: DW_TAG_member, name: "text", scope: !4, file: !1, line: 8, baseType: !7, size: 32, align: 8) 132!7 = !DICompositeType(tag: DW_TAG_array_type, baseType: !8, size: 32, align: 8, elements: !9) 133!8 = !DIBasicType(name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char) 134!9 = !{!10} 135!10 = !DISubrange(count: 4) 136!11 = !DISubprogram(name: "AAA3", scope: !4, file: !1, line: 5, type: !12, isLocal: false, isDefinition: false, scopeLine: 5, flags: DIFlagPrototyped, isOptimized: true) 137!12 = !DISubroutineType(types: !13) 138!13 = !{null, !14, !15} 139!14 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !4, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer) 140!15 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !16, size: 64, align: 64) 141!16 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !8) 142!17 = !DISubprogram(name: "operator=", linkageName: "_ZN4AAA3aSEPKc", scope: !4, file: !1, line: 6, type: !12, isLocal: false, isDefinition: false, scopeLine: 6, flags: DIFlagPrototyped, isOptimized: true) 143!18 = !DISubprogram(name: "operator const char *", linkageName: "_ZNK4AAA3cvPKcEv", scope: !4, file: !1, line: 7, type: !19, isLocal: false, isDefinition: false, scopeLine: 7, flags: DIFlagPrototyped, isOptimized: true) 144!19 = !DISubroutineType(types: !20) 145!20 = !{!15, !21} 146!21 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !22, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer) 147!22 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !4) 148!24 = distinct !DISubprogram(name: "bar", linkageName: "_Z3barii", scope: !1, file: !1, line: 11, type: !25, isLocal: false, isDefinition: true, scopeLine: 11, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !28) 149!25 = !DISubroutineType(types: !26) 150!26 = !{null, !27, !27} 151!27 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 152!28 = !{!29, !30, !31, !32, !33} 153!29 = !DILocalVariable(name: "param1", arg: 1, scope: !24, file: !1, line: 11, type: !27) 154!30 = !DILocalVariable(name: "param2", arg: 2, scope: !24, file: !1, line: 11, type: !27) 155!31 = !DILocalVariable(name: "temp", scope: !24, file: !1, line: 12, type: !15) 156!32 = !DILocalVariable(name: "var1", scope: !24, file: !1, line: 17, type: !4) 157!33 = !DILocalVariable(name: "var2", scope: !24, file: !1, line: 18, type: !4) 158!34 = distinct !DISubprogram(name: "AAA3", linkageName: "_ZN4AAA3C2EPKc", scope: !4, file: !1, line: 5, type: !12, isLocal: false, isDefinition: true, scopeLine: 5, flags: DIFlagPrototyped, isOptimized: true, unit: !0, declaration: !11, retainedNodes: !35) 159!35 = !{!36, !38} 160!36 = !DILocalVariable(name: "this", arg: 1, scope: !34, type: !37, flags: DIFlagArtificial | DIFlagObjectPointer) 161!37 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !4, size: 64, align: 64) 162!38 = !DILocalVariable(name: "value", arg: 2, scope: !34, file: !1, line: 5, type: !15) 163!39 = distinct !DISubprogram(name: "operator=", linkageName: "_ZN4AAA3aSEPKc", scope: !4, file: !1, line: 6, type: !12, isLocal: false, isDefinition: true, scopeLine: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, declaration: !17, retainedNodes: !40) 164!40 = !{!41, !42} 165!41 = !DILocalVariable(name: "this", arg: 1, scope: !39, type: !37, flags: DIFlagArtificial | DIFlagObjectPointer) 166!42 = !DILocalVariable(name: "value", arg: 2, scope: !39, file: !1, line: 6, type: !15) 167!43 = !{i32 2, !"Dwarf Version", i32 4} 168!44 = !{i32 2, !"Debug Info Version", i32 3} 169!45 = !{!"clang version 3.8.0 (trunk 255993) (llvm/trunk 256074)"} 170!46 = !DIExpression() 171!47 = !DILocation(line: 11, column: 15, scope: !24) 172!48 = !DILocation(line: 11, column: 26, scope: !24) 173!49 = !DILocation(line: 12, column: 16, scope: !24) 174!50 = !DILocation(line: 14, column: 7, scope: !51) 175!51 = distinct !DILexicalBlock(scope: !24, file: !1, line: 14, column: 7) 176!52 = !DILocation(line: 14, column: 7, scope: !24) 177!53 = !DILocation(line: 15, column: 12, scope: !54) 178!54 = distinct !DILexicalBlock(scope: !51, file: !1, line: 14, column: 15) 179!55 = !DILocation(line: 16, column: 3, scope: !54) 180!56 = !DILocation(line: 17, column: 3, scope: !24) 181!57 = !DIExpression(DW_OP_deref) 182!58 = !DILocation(line: 17, column: 8, scope: !24) 183!59 = !DILocation(line: 0, scope: !34, inlinedAt: !60) 184!60 = distinct !DILocation(line: 17, column: 8, scope: !61) 185!61 = !DILexicalBlockFile(scope: !24, file: !1, discriminator: 1) 186!62 = !DILocation(line: 5, column: 19, scope: !34, inlinedAt: !60) 187!63 = !DILocation(line: 5, column: 28, scope: !64, inlinedAt: !60) 188!64 = distinct !DILexicalBlock(scope: !34, file: !1, line: 5, column: 26) 189!65 = !DILocation(line: 18, column: 3, scope: !24) 190!66 = !DILocation(line: 18, column: 8, scope: !24) 191!67 = !DILocation(line: 0, scope: !34, inlinedAt: !68) 192!68 = distinct !DILocation(line: 18, column: 8, scope: !61) 193!69 = !DILocation(line: 5, column: 19, scope: !34, inlinedAt: !68) 194!70 = !DILocation(line: 5, column: 28, scope: !64, inlinedAt: !68) 195!71 = !DILocation(line: 20, column: 7, scope: !72) 196!72 = distinct !DILexicalBlock(scope: !24, file: !1, line: 20, column: 7) 197!73 = !DILocation(line: 0, scope: !39, inlinedAt: !74) 198!74 = distinct !DILocation(line: 23, column: 10, scope: !72) 199!75 = !DILocation(line: 20, column: 7, scope: !24) 200!76 = !DILocation(line: 6, column: 29, scope: !39, inlinedAt: !77) 201!77 = distinct !DILocation(line: 21, column: 10, scope: !72) 202!78 = !DILocation(line: 6, column: 38, scope: !39, inlinedAt: !77) 203!79 = !DILocation(line: 21, column: 5, scope: !72) 204!80 = !DILocation(line: 6, column: 29, scope: !39, inlinedAt: !74) 205!81 = !DILocation(line: 6, column: 38, scope: !39, inlinedAt: !74) 206!82 = !DILocation(line: 0, scope: !39, inlinedAt: !83) 207!83 = distinct !DILocation(line: 24, column: 8, scope: !24) 208!84 = !DILocation(line: 6, column: 29, scope: !39, inlinedAt: !83) 209!85 = !DILocation(line: 6, column: 38, scope: !39, inlinedAt: !83) 210!86 = !DILocation(line: 25, column: 1, scope: !24) 211!87 = !DILocation(line: 25, column: 1, scope: !61) 212