| ; RUN: opt %s -simplifycfg -verify -S -o - | FileCheck %s |
| ; |
| ; Verify that SimplifyCFG does not invalidate operands for |
| ; llvm.dbg.value intrinsics. |
| ; |
| ; Reduced from the following example, compiled with |
| ; -O1 -g -fno-exceptions -fno-discard-value-names: |
| ; |
| ; void test() { |
| ; bool a = false; |
| ; bool b = false; |
| ; bool c = false; |
| ; [&a, &b, &c] { b = true; }(); |
| ; |
| ; if (a || b || c) { |
| ; __builtin_debugtrap(); |
| ; } |
| ; } |
| |
| ; CHECK: _Z4testv |
| ; CHECK-NOT: llvm.dbg.value(metadata ! |
| ; CHECK: ret void |
| |
| %class.anon = type { i8*, i8*, i8* } |
| |
| ; Function Attrs: nounwind uwtable |
| define dso_local void @_Z4testv() local_unnamed_addr !dbg !7 { |
| entry: |
| %a = alloca i8, align 1 |
| %b = alloca i8, align 1 |
| %c = alloca i8, align 1 |
| %ref.tmp = alloca %class.anon, align 8 |
| call void @llvm.dbg.value(metadata i8* %a, metadata !12, metadata !DIExpression(DW_OP_deref)), !dbg !16 |
| call void @llvm.dbg.value(metadata i8 0, metadata !12, metadata !DIExpression()), !dbg !16 |
| store i8 0, i8* %a, align 1, !dbg !16 |
| call void @llvm.dbg.value(metadata i8* %b, metadata !14, metadata !DIExpression(DW_OP_deref)), !dbg !16 |
| call void @llvm.dbg.value(metadata i8 0, metadata !14, metadata !DIExpression()), !dbg !16 |
| store i8 0, i8* %b, align 1, !dbg !16 |
| call void @llvm.dbg.value(metadata i8* %c, metadata !15, metadata !DIExpression(DW_OP_deref)), !dbg !16 |
| call void @llvm.dbg.value(metadata i8 0, metadata !15, metadata !DIExpression()), !dbg !16 |
| store i8 0, i8* %c, align 1, !dbg !16 |
| %0 = bitcast %class.anon* %ref.tmp to i8*, !dbg !16 |
| %1 = getelementptr inbounds %class.anon, %class.anon* %ref.tmp, i64 0, i32 0, !dbg !16 |
| store i8* %a, i8** %1, align 8, !dbg !16 |
| %2 = getelementptr inbounds %class.anon, %class.anon* %ref.tmp, i64 0, i32 1, !dbg !16 |
| store i8* %b, i8** %2, align 8, !dbg !16 |
| %3 = getelementptr inbounds %class.anon, %class.anon* %ref.tmp, i64 0, i32 2, !dbg !16 |
| store i8* %c, i8** %3, align 8, !dbg !16 |
| call fastcc void @"_ZZ4testvENK3$_0clEv"(%class.anon* nonnull %ref.tmp), !dbg !16 |
| %4 = load i8, i8* %a, align 1, !dbg !17 |
| call void @llvm.dbg.value(metadata i8 %4, metadata !12, metadata !DIExpression()), !dbg !16 |
| %tobool = icmp eq i8 %4, 0, !dbg !17 |
| br i1 %tobool, label %lor.lhs.false, label %if.then, !dbg !17 |
| |
| lor.lhs.false: ; preds = %entry |
| %5 = load i8, i8* %b, align 1, !dbg !17 |
| call void @llvm.dbg.value(metadata i8 %5, metadata !14, metadata !DIExpression()), !dbg !16 |
| %tobool1 = icmp eq i8 %5, 0, !dbg !17 |
| br i1 %tobool1, label %lor.lhs.false2, label %if.then, !dbg !17 |
| |
| lor.lhs.false2: ; preds = %lor.lhs.false |
| %6 = load i8, i8* %c, align 1, !dbg !17 |
| call void @llvm.dbg.value(metadata i8 %6, metadata !15, metadata !DIExpression()), !dbg !16 |
| %tobool3 = icmp eq i8 %6, 0, !dbg !17 |
| br i1 %tobool3, label %if.end, label %if.then, !dbg !16 |
| |
| if.then: ; preds = %lor.lhs.false2, %lor.lhs.false, %entry |
| call void @llvm.debugtrap(), !dbg !19 |
| br label %if.end, !dbg !19 |
| |
| if.end: ; preds = %lor.lhs.false2, %if.then |
| call void @llvm.dbg.value(metadata i8* %c, metadata !15, metadata !DIExpression(DW_OP_deref)), !dbg !16 |
| call void @llvm.dbg.value(metadata i8* %b, metadata !14, metadata !DIExpression(DW_OP_deref)), !dbg !16 |
| call void @llvm.dbg.value(metadata i8* %a, metadata !12, metadata !DIExpression(DW_OP_deref)), !dbg !16 |
| ret void, !dbg !16 |
| } |
| |
| ; Function Attrs: inlinehint nounwind uwtable |
| define internal fastcc void @"_ZZ4testvENK3$_0clEv"(%class.anon* %this) unnamed_addr align 2 !dbg !21 { |
| entry: |
| call void @llvm.dbg.value(metadata %class.anon* %this, metadata !34, metadata !DIExpression()), !dbg !36 |
| %0 = getelementptr inbounds %class.anon, %class.anon* %this, i32 0, i32 1, !dbg !36 |
| %1 = load i8*, i8** %0, align 8, !dbg !36 |
| store i8 1, i8* %1, align 1, !dbg !36 |
| ret void, !dbg !36 |
| } |
| |
| ; Function Attrs: nounwind |
| declare void @llvm.debugtrap() |
| |
| ; Function Attrs: nounwind readnone speculatable |
| declare void @llvm.dbg.value(metadata, metadata, metadata) |
| |
| !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 version 8.0.1-4 (tags/RELEASE_801/final)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, nameTableKind: None) |
| !1 = !DIFile(filename: "test.cc", directory: "/dir") |
| !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 version 8.0.1-4 (tags/RELEASE_801/final)"} |
| !7 = distinct !DISubprogram(name: "test", linkageName: "_Z4testv", scope: !8, file: !8, line: 1, type: !9, scopeLine: 1, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !11) |
| !8 = !DIFile(filename: "test.cc", directory: "/dir") |
| !9 = !DISubroutineType(types: !10) |
| !10 = !{null} |
| !11 = !{!12, !14, !15} |
| !12 = !DILocalVariable(name: "a", scope: !7, file: !8, line: 2, type: !13) |
| !13 = !DIBasicType(name: "bool", size: 8, encoding: DW_ATE_boolean) |
| !14 = !DILocalVariable(name: "b", scope: !7, file: !8, line: 3, type: !13) |
| !15 = !DILocalVariable(name: "c", scope: !7, file: !8, line: 4, type: !13) |
| !16 = !DILocation(line: 2, scope: !7) |
| !17 = !DILocation(line: 7, scope: !18) |
| !18 = distinct !DILexicalBlock(scope: !7, file: !8, line: 7) |
| !19 = !DILocation(line: 8, scope: !20) |
| !20 = distinct !DILexicalBlock(scope: !18, file: !8, line: 7) |
| !21 = distinct !DISubprogram(name: "operator()", linkageName: "_ZZ4testvENK3$_0clEv", scope: !22, file: !8, line: 5, type: !28, scopeLine: 5, flags: DIFlagPrototyped, spFlags: DISPFlagLocalToUnit | DISPFlagDefinition | DISPFlagOptimized, unit: !0, declaration: !32, retainedNodes: !33) |
| !22 = distinct !DICompositeType(tag: DW_TAG_class_type, scope: !7, file: !8, line: 5, size: 192, flags: DIFlagTypePassByValue, elements: !23) |
| !23 = !{!24, !26, !27} |
| !24 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !22, file: !8, line: 5, baseType: !25, size: 64) |
| !25 = !DIDerivedType(tag: DW_TAG_reference_type, baseType: !13, size: 64) |
| !26 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !22, file: !8, line: 5, baseType: !25, size: 64, offset: 64) |
| !27 = !DIDerivedType(tag: DW_TAG_member, name: "c", scope: !22, file: !8, line: 5, baseType: !25, size: 64, offset: 128) |
| !28 = !DISubroutineType(types: !29) |
| !29 = !{null, !30} |
| !30 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !31, size: 64, flags: DIFlagArtificial | DIFlagObjectPointer) |
| !31 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !22) |
| !32 = !DISubprogram(name: "operator()", scope: !22, file: !8, line: 5, type: !28, scopeLine: 5, flags: DIFlagPublic | DIFlagPrototyped, spFlags: DISPFlagOptimized) |
| !33 = !{!34} |
| !34 = !DILocalVariable(name: "this", arg: 1, scope: !21, type: !35, flags: DIFlagArtificial | DIFlagObjectPointer) |
| !35 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !31, size: 64) |
| !36 = !DILocation(line: 0, scope: !21) |