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