; RUN: llc -march=x86-64 -mtriple=x86_64-linux < %s | FileCheck %s ; RUN: opt -strip-debug < %s | llc -march=x86-64 -mtriple=x86_64-linux | FileCheck %s ; http://llvm.org/PR19051. Minor code-motion difference with -g. ; Presence of debug info shouldn't affect the codegen. Make sure that ; we generated the same code sequence with and without debug info. ; ; CHECK: callq _Z3fooPcjPKc ; CHECK: callq _Z3fooPcjPKc ; CHECK: leaq (%rsp), %rdi ; CHECK: movl $4, %esi ; CHECK: testl {{%[a-z]+}}, {{%[a-z]+}} ; CHECK: je .LBB0_4 ; Regenerate test with this command: ; clang -emit-llvm -S -O2 -g ; from this source: ; ; extern void foo(char *dst,unsigned siz,const char *src); ; extern const char * i2str(int); ; ; struct AAA3 { ; AAA3(const char *value) { foo(text,sizeof(text),value);} ; void operator=(const char *value) { foo(text,sizeof(text),value);} ; operator const char*() const { return text;} ; char text[4]; ; }; ; ; void bar (int param1,int param2) { ; const char * temp(0); ; ; if (param2) { ; temp = i2str(param2); ; } ; AAA3 var1(""); ; AAA3 var2(""); ; ; if (param1) ; var2 = "+"; ; else ; var2 = "-"; ; var1 = ""; ; } %struct.AAA3 = type { [4 x i8] } @.str = private unnamed_addr constant [1 x i8] zeroinitializer, align 1 @.str1 = private unnamed_addr constant [2 x i8] c"+\00", align 1 @.str2 = private unnamed_addr constant [2 x i8] c"-\00", align 1 ; Function Attrs: uwtable define void @_Z3barii(i32 %param1, i32 %param2) #0 { entry: %var1 = alloca %struct.AAA3, align 1 %var2 = alloca %struct.AAA3, align 1 tail call void @llvm.dbg.value(metadata i32 %param1, i64 0, metadata !30, metadata !MDExpression()), !dbg !47 tail call void @llvm.dbg.value(metadata i32 %param2, i64 0, metadata !31, metadata !MDExpression()), !dbg !47 tail call void @llvm.dbg.value(metadata i8* null, i64 0, metadata !32, metadata !MDExpression()), !dbg !49 %tobool = icmp eq i32 %param2, 0, !dbg !50 br i1 %tobool, label %if.end, label %if.then, !dbg !50 if.then: ; preds = %entry %call = tail call i8* @_Z5i2stri(i32 %param2), !dbg !52 tail call void @llvm.dbg.value(metadata i8* %call, i64 0, metadata !32, metadata !MDExpression()), !dbg !49 br label %if.end, !dbg !54 if.end: ; preds = %entry, %if.then tail call void @llvm.dbg.value(metadata %struct.AAA3* %var1, i64 0, metadata !33, metadata !MDExpression()), !dbg !55 tail call void @llvm.dbg.value(metadata %struct.AAA3* %var1, i64 0, metadata !56, metadata !MDExpression()), !dbg !57 tail call void @llvm.dbg.value(metadata !58, i64 0, metadata !59, metadata !MDExpression()), !dbg !60 %arraydecay.i = getelementptr inbounds %struct.AAA3, %struct.AAA3* %var1, i64 0, i32 0, i64 0, !dbg !61 call void @_Z3fooPcjPKc(i8* %arraydecay.i, i32 4, i8* getelementptr inbounds ([1 x i8], [1 x i8]* @.str, i64 0, i64 0)), !dbg !61 call void @llvm.dbg.value(metadata %struct.AAA3* %var2, i64 0, metadata !34, metadata !MDExpression()), !dbg !63 call void @llvm.dbg.value(metadata %struct.AAA3* %var2, i64 0, metadata !64, metadata !MDExpression()), !dbg !65 call void @llvm.dbg.value(metadata !58, i64 0, metadata !66, metadata !MDExpression()), !dbg !67 %arraydecay.i5 = getelementptr inbounds %struct.AAA3, %struct.AAA3* %var2, i64 0, i32 0, i64 0, !dbg !68 call void @_Z3fooPcjPKc(i8* %arraydecay.i5, i32 4, i8* getelementptr inbounds ([1 x i8], [1 x i8]* @.str, i64 0, i64 0)), !dbg !68 %tobool1 = icmp eq i32 %param1, 0, !dbg !69 call void @llvm.dbg.value(metadata %struct.AAA3* %var2, i64 0, metadata !34, metadata !MDExpression()), !dbg !63 br i1 %tobool1, label %if.else, label %if.then2, !dbg !69 if.then2: ; preds = %if.end call void @llvm.dbg.value(metadata %struct.AAA3* %var2, i64 0, metadata !71, metadata !MDExpression()), !dbg !73 call void @llvm.dbg.value(metadata !74, i64 0, metadata !75, metadata !MDExpression()), !dbg !76 call void @_Z3fooPcjPKc(i8* %arraydecay.i5, i32 4, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str1, i64 0, i64 0)), !dbg !76 br label %if.end3, !dbg !72 if.else: ; preds = %if.end call void @llvm.dbg.value(metadata %struct.AAA3* %var2, i64 0, metadata !77, metadata !MDExpression()), !dbg !79 call void @llvm.dbg.value(metadata !80, i64 0, metadata !81, metadata !MDExpression()), !dbg !82 call void @_Z3fooPcjPKc(i8* %arraydecay.i5, i32 4, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str2, i64 0, i64 0)), !dbg !82 br label %if.end3 if.end3: ; preds = %if.else, %if.then2 call void @llvm.dbg.value(metadata %struct.AAA3* %var1, i64 0, metadata !33, metadata !MDExpression()), !dbg !55 call void @llvm.dbg.value(metadata %struct.AAA3* %var1, i64 0, metadata !83, metadata !MDExpression()), !dbg !85 call void @llvm.dbg.value(metadata !58, i64 0, metadata !86, metadata !MDExpression()), !dbg !87 call void @_Z3fooPcjPKc(i8* %arraydecay.i, i32 4, i8* getelementptr inbounds ([1 x i8], [1 x i8]* @.str, i64 0, i64 0)), !dbg !87 ret void, !dbg !88 } declare i8* @_Z5i2stri(i32) #1 declare void @_Z3fooPcjPKc(i8*, i32, i8*) #1 ; Function Attrs: nounwind readnone declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #2 attributes #0 = { uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } attributes #1 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } attributes #2 = { nounwind readnone } !llvm.dbg.cu = !{!0} !llvm.module.flags = !{!44, !45} !llvm.ident = !{!46} !0 = !MDCompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 ", isOptimized: true, emissionKind: 1, file: !1, enums: !2, retainedTypes: !3, subprograms: !23, globals: !2, imports: !2) !1 = !MDFile(filename: "dbg-changes-codegen-branch-folding.cpp", directory: "/tmp/dbginfo") !2 = !{} !3 = !{!4} !4 = !MDCompositeType(tag: DW_TAG_structure_type, name: "AAA3", line: 4, size: 32, align: 8, file: !1, elements: !5, identifier: "_ZTS4AAA3") !5 = !{!6, !11, !17, !18} !6 = !MDDerivedType(tag: DW_TAG_member, name: "text", line: 8, size: 32, align: 8, file: !1, scope: !"_ZTS4AAA3", baseType: !7) !7 = !MDCompositeType(tag: DW_TAG_array_type, size: 32, align: 8, baseType: !8, elements: !9) !8 = !MDBasicType(tag: DW_TAG_base_type, name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char) !9 = !{!10} !10 = !MDSubrange(count: 4) !11 = !MDSubprogram(name: "AAA3", line: 5, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 5, file: !1, scope: !"_ZTS4AAA3", type: !12) !12 = !MDSubroutineType(types: !13) !13 = !{null, !14, !15} !14 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer, baseType: !"_ZTS4AAA3") !15 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !16) !16 = !MDDerivedType(tag: DW_TAG_const_type, baseType: !8) !17 = !MDSubprogram(name: "operator=", linkageName: "_ZN4AAA3aSEPKc", line: 6, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 6, file: !1, scope: !"_ZTS4AAA3", type: !12) !18 = !MDSubprogram(name: "operator const char *", linkageName: "_ZNK4AAA3cvPKcEv", line: 7, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 7, file: !1, scope: !"_ZTS4AAA3", type: !19) !19 = !MDSubroutineType(types: !20) !20 = !{!15, !21} !21 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer, baseType: !22) !22 = !MDDerivedType(tag: DW_TAG_const_type, baseType: !"_ZTS4AAA3") !23 = !{!24, !35, !40} !24 = !MDSubprogram(name: "bar", linkageName: "_Z3barii", line: 11, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 11, file: !1, scope: !25, type: !26, function: void (i32, i32)* @_Z3barii, variables: !29) !25 = !MDFile(filename: "dbg-changes-codegen-branch-folding.cpp", directory: "/tmp/dbginfo") !26 = !MDSubroutineType(types: !27) !27 = !{null, !28, !28} !28 = !MDBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed) !29 = !{!30, !31, !32, !33, !34} !30 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "param1", line: 11, arg: 1, scope: !24, file: !25, type: !28) !31 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "param2", line: 11, arg: 2, scope: !24, file: !25, type: !28) !32 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "temp", line: 12, scope: !24, file: !25, type: !15) !33 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "var1", line: 17, scope: !24, file: !25, type: !"_ZTS4AAA3") !34 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "var2", line: 18, scope: !24, file: !25, type: !"_ZTS4AAA3") !35 = !MDSubprogram(name: "operator=", linkageName: "_ZN4AAA3aSEPKc", line: 6, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 6, file: !1, scope: !"_ZTS4AAA3", type: !12, declaration: !17, variables: !36) !36 = !{!37, !39} !37 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !35, type: !38) !38 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !"_ZTS4AAA3") !39 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "value", line: 6, arg: 2, scope: !35, file: !25, type: !15) !40 = !MDSubprogram(name: "AAA3", linkageName: "_ZN4AAA3C2EPKc", line: 5, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 5, file: !1, scope: !"_ZTS4AAA3", type: !12, declaration: !11, variables: !41) !41 = !{!42, !43} !42 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !40, type: !38) !43 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "value", line: 5, arg: 2, scope: !40, file: !25, type: !15) !44 = !{i32 2, !"Dwarf Version", i32 4} !45 = !{i32 2, !"Debug Info Version", i32 3} !46 = !{!"clang version 3.5.0 "} !47 = !MDLocation(line: 11, scope: !24) !48 = !{i8* null} !49 = !MDLocation(line: 12, scope: !24) !50 = !MDLocation(line: 14, scope: !51) !51 = distinct !MDLexicalBlock(line: 14, column: 0, file: !1, scope: !24) !52 = !MDLocation(line: 15, scope: !53) !53 = distinct !MDLexicalBlock(line: 14, column: 0, file: !1, scope: !51) !54 = !MDLocation(line: 16, scope: !53) !55 = !MDLocation(line: 17, scope: !24) !56 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !40, type: !38, inlinedAt: !55) !57 = !MDLocation(line: 0, scope: !40, inlinedAt: !55) !58 = !{i8* getelementptr inbounds ([1 x i8], [1 x i8]* @.str, i64 0, i64 0)} !59 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "value", line: 5, arg: 2, scope: !40, file: !25, type: !15, inlinedAt: !55) !60 = !MDLocation(line: 5, scope: !40, inlinedAt: !55) !61 = !MDLocation(line: 5, scope: !62, inlinedAt: !55) !62 = distinct !MDLexicalBlock(line: 5, column: 0, file: !1, scope: !40) !63 = !MDLocation(line: 18, scope: !24) !64 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !40, type: !38, inlinedAt: !63) !65 = !MDLocation(line: 0, scope: !40, inlinedAt: !63) !66 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "value", line: 5, arg: 2, scope: !40, file: !25, type: !15, inlinedAt: !63) !67 = !MDLocation(line: 5, scope: !40, inlinedAt: !63) !68 = !MDLocation(line: 5, scope: !62, inlinedAt: !63) !69 = !MDLocation(line: 20, scope: !70) !70 = distinct !MDLexicalBlock(line: 20, column: 0, file: !1, scope: !24) !71 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !35, type: !38, inlinedAt: !72) !72 = !MDLocation(line: 21, scope: !70) !73 = !MDLocation(line: 0, scope: !35, inlinedAt: !72) !74 = !{i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str1, i64 0, i64 0)} !75 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "value", line: 6, arg: 2, scope: !35, file: !25, type: !15, inlinedAt: !72) !76 = !MDLocation(line: 6, scope: !35, inlinedAt: !72) !77 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !35, type: !38, inlinedAt: !78) !78 = !MDLocation(line: 23, scope: !70) !79 = !MDLocation(line: 0, scope: !35, inlinedAt: !78) !80 = !{i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str2, i64 0, i64 0)} !81 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "value", line: 6, arg: 2, scope: !35, file: !25, type: !15, inlinedAt: !78) !82 = !MDLocation(line: 6, scope: !35, inlinedAt: !78) !83 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !35, type: !38, inlinedAt: !84) !84 = !MDLocation(line: 24, scope: !24) !85 = !MDLocation(line: 0, scope: !35, inlinedAt: !84) !86 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "value", line: 6, arg: 2, scope: !35, file: !25, type: !15, inlinedAt: !84) !87 = !MDLocation(line: 6, scope: !35, inlinedAt: !84) !88 = !MDLocation(line: 25, scope: !24)