| |
| ; RUN: opt < %s -instcombine -verify -S -o - | FileCheck %s |
| |
| ; Hand-reduced from this example. |
| ; -g -O -mllvm -disable-llvm-optzns -gno-column-info |
| ; plus opt -sroa -instcombine -inline |
| |
| ; #include <stdio.h> |
| ; |
| ; struct S1 { |
| ; int p1; |
| ; int p2; |
| ; |
| ; bool IsNull ( ) { |
| ; return p1 == 0; |
| ; } |
| ; }; |
| ; |
| ; S1 foo ( void ); |
| ; |
| ; int bar ( ) { |
| ; |
| ; S1 result = foo(); |
| ; |
| ; if ( result.IsNull() ) |
| ; return 0; |
| ; |
| ; result.p1 = 2; |
| ; result.p2 = 3; |
| ; |
| ; int* ptr = &result.p1; |
| ; |
| ; printf("%d", *ptr); |
| ; printf("%d", *(ptr+1)); |
| ; |
| ; return result.p1 + 1; |
| ; } |
| |
| ; CHECK: _Z3barv |
| ; CHECK: llvm.dbg.declare(metadata i64* %{{.*}}, metadata [[METADATA_IDX1:![0-9]+]] |
| ; CHECK-NOT: llvm.dbg.declare(metadata %struct.S1* %{{.*}}, metadata [[METADATA_IDX1]] |
| ; CHECK: ret |
| ; CHECK: DICompileUnit |
| ; CHECK: [[METADATA_IDX1]] = !DILocalVariable(name: "result" |
| |
| target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| %struct.S1 = type { i32, i32 } |
| |
| @.str = private unnamed_addr constant [3 x i8] c"%d\00", align 1 |
| |
| define dso_local i32 @_Z3barv() !dbg !7 { |
| entry: |
| %result = alloca i64, align 8 |
| %tmpcast = bitcast i64* %result to %struct.S1* |
| %0 = bitcast i64* %result to i8*, !dbg !24 |
| call void @llvm.lifetime.start.p0i8(i64 8, i8* nonnull %0) #4, !dbg !24 |
| call void @llvm.dbg.declare(metadata %struct.S1* %tmpcast, metadata !12, metadata !DIExpression()), !dbg !24 |
| %call = call i64 @_Z3foov(), !dbg !24 |
| store i64 %call, i64* %result, align 8, !dbg !24 |
| call void @llvm.dbg.value(metadata %struct.S1* %tmpcast, metadata !25, metadata !DIExpression()), !dbg !29 |
| %p1.i = getelementptr inbounds %struct.S1, %struct.S1* %tmpcast, i64 0, i32 0, !dbg !32 |
| %1 = load i32, i32* %p1.i, align 4, !dbg !32 |
| %cmp.i = icmp eq i32 %1, 0, !dbg !32 |
| br i1 %cmp.i, label %if.then, label %if.end, !dbg !38 |
| |
| if.then: ; preds = %entry |
| br label %cleanup, !dbg !38 |
| |
| if.end: ; preds = %entry |
| |
| %p1 = bitcast i64* %result to i32*, !dbg !38 |
| store i32 2, i32* %p1, align 8, !dbg !38 |
| %p2 = getelementptr inbounds %struct.S1, %struct.S1* %tmpcast, i64 0, i32 1, !dbg !38 |
| store i32 3, i32* %p2, align 4, !dbg !38 |
| %p12 = bitcast i64* %result to i32*, !dbg !38 |
| call void @llvm.dbg.value(metadata i32* %p12, metadata !22, metadata !DIExpression()), !dbg !38 |
| %call3 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i32 2), !dbg !38 |
| %add.ptr = getelementptr inbounds i32, i32* %p12, i64 1, !dbg !38 |
| %2 = load i32, i32* %add.ptr, align 4, !dbg !38 |
| %call4 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i32 %2), !dbg !38 |
| %p15 = bitcast i64* %result to i32*, !dbg !38 |
| %3 = load i32, i32* %p15, align 8, !dbg !38 |
| %add = add nsw i32 %3, 1, !dbg !38 |
| br label %cleanup |
| |
| cleanup: ; preds = %if.end, %if.then |
| %retval.0 = phi i32 [ 0, %if.then ], [ %add, %if.end ], !dbg !38 |
| %4 = bitcast i64* %result to i8*, !dbg !38 |
| call void @llvm.lifetime.end.p0i8(i64 8, i8* nonnull %4) #4, !dbg !38 |
| ret i32 %retval.0, !dbg !38 |
| } |
| |
| declare void @llvm.lifetime.start.p0i8(i64 immarg, i8* nocapture) #1 |
| |
| declare void @llvm.dbg.declare(metadata, metadata, metadata) #2 |
| |
| declare dso_local i64 @_Z3foov() #3 |
| |
| declare dso_local i32 @printf(i8*, ...) #3 |
| |
| declare void @llvm.lifetime.end.p0i8(i64 immarg, i8* nocapture) #1 |
| |
| declare void @llvm.dbg.value(metadata, metadata, metadata) #2 |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!3, !4, !5} |
| !llvm.ident = !{!6} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, nameTableKind: None) |
| !1 = !DIFile(filename: "test.cpp", directory: "") |
| !2 = !{} |
| !3 = !{i32 2, !"Dwarf Version", i32 4} |
| !4 = !{i32 2, !"Debug Info Version", i32 3} |
| !5 = !{i32 1, !"wchar_size", i32 4} |
| !6 = !{!"clang"} |
| !7 = distinct !DISubprogram(name: "bar", linkageName: "_Z3barv", scope: !1, file: !1, line: 15, type: !8, scopeLine: 15, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !11) |
| !8 = !DISubroutineType(types: !9) |
| !9 = !{!10} |
| !10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) |
| !11 = !{!12, !22} |
| !12 = !DILocalVariable(name: "result", scope: !7, file: !1, line: 17, type: !13) |
| !13 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "S1", file: !1, line: 4, size: 64, flags: DIFlagTypePassByValue, elements: !14, identifier: "_ZTS2S1") |
| !14 = !{!15, !16, !17} |
| !15 = !DIDerivedType(tag: DW_TAG_member, name: "p1", scope: !13, file: !1, line: 5, baseType: !10, size: 32) |
| !16 = !DIDerivedType(tag: DW_TAG_member, name: "p2", scope: !13, file: !1, line: 6, baseType: !10, size: 32, offset: 32) |
| !17 = !DISubprogram(name: "IsNull", linkageName: "_ZN2S16IsNullEv", scope: !13, file: !1, line: 8, type: !18, scopeLine: 8, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized) |
| !18 = !DISubroutineType(types: !19) |
| !19 = !{!20, !21} |
| !20 = !DIBasicType(name: "bool", size: 8, encoding: DW_ATE_boolean) |
| !21 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !13, size: 64, flags: DIFlagArtificial | DIFlagObjectPointer) |
| !22 = !DILocalVariable(name: "ptr", scope: !7, file: !1, line: 25, type: !23) |
| !23 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !10, size: 64) |
| !24 = !DILocation(line: 17, scope: !7) |
| !25 = !DILocalVariable(name: "this", arg: 1, scope: !26, type: !28, flags: DIFlagArtificial | DIFlagObjectPointer) |
| !26 = distinct !DISubprogram(name: "IsNull", linkageName: "_ZN2S16IsNullEv", scope: !13, file: !1, line: 8, type: !18, scopeLine: 8, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, declaration: !17, retainedNodes: !27) |
| !27 = !{!25} |
| !28 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !13, size: 64) |
| !29 = !DILocation(line: 0, scope: !26, inlinedAt: !30) |
| !30 = distinct !DILocation(line: 19, scope: !31) |
| !31 = distinct !DILexicalBlock(scope: !7, file: !1, line: 19) |
| !32 = !DILocation(line: 9, scope: !26, inlinedAt: !30) |
| !38 = !DILocation(line: 0, scope: !7) |