1 ; RUN: opt -S %s -passes=simplifycfg -o - \
3 ; RUN: opt --try-experimental-debuginfo-iterators -S %s -passes=simplifycfg -o - \
8 ;; void operator*(a, float &);
27 ;; Generated by grabbing IR before simplifycfg in:
28 ;; $ clang++ -O2 -g -c test.cpp -Xclang -fexperimental-assignment-tracking
30 ;; if.then and if.else each only have a dbg.assign and br instruction.
31 ;; SimplifyCFG will remove these blocks. Check that the dbg.assign intrinsics
32 ;; are sunk into the succ beforehand.
35 ;; -- alloca dbg.assign
36 ; CHECK: #dbg_assign(i1 undef
37 ;; -- sunk dbg.assigns
38 ; CHECK: #dbg_assign(float undef, ![[var:[0-9]+]], !DIExpression(), ![[id:[0-9]+]], ptr %h, !DIExpression(),
39 ; CHECK-NEXT: #dbg_assign(float undef, ![[var]], !DIExpression(), ![[id]], ptr %h, !DIExpression(),
40 ; CHECK-NEXT: %storemerge.in = getelementptr
41 ; CHECK-NEXT: %storemerge = load float
42 ; CHECK-NEXT: store float %storemerge, ptr %h, align 4{{.+}}!DIAssignID ![[id]]
45 %class.e = type { [3 x %class.b], float }
46 %class.b = type { %class.a }
47 %class.a = type { i8 }
49 @d = dso_local local_unnamed_addr global i32 0, align 4, !dbg !0
51 ; Function Attrs: uwtable
52 define dso_local void @_ZN1e1iEv(ptr %this) local_unnamed_addr #0 align 2 !dbg !11 {
54 %h = alloca float, align 4, !DIAssignID !32
55 call void @llvm.dbg.assign(metadata i1 undef, metadata !31, metadata !DIExpression(), metadata !32, metadata ptr %h, metadata !DIExpression()), !dbg !33
56 %0 = bitcast ptr %h to ptr, !dbg !34
57 call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %0) #4, !dbg !34
58 call void @_Zml1aRf(ptr nonnull align 4 dereferenceable(4) %h), !dbg !35
59 %1 = load float, ptr %h, align 4, !dbg !36
60 %tobool = fcmp une float %1, 0.000000e+00, !dbg !36
61 br i1 %tobool, label %if.then, label %if.else, !dbg !42
63 if.then: ; preds = %entry
64 call void @llvm.dbg.assign(metadata float undef, metadata !31, metadata !DIExpression(), metadata !43, metadata ptr %h, metadata !DIExpression()), !dbg !33
65 br label %if.end, !dbg !44
67 if.else: ; preds = %entry
68 call void @llvm.dbg.assign(metadata float undef, metadata !31, metadata !DIExpression(), metadata !43, metadata ptr %h, metadata !DIExpression()), !dbg !33
71 if.end: ; preds = %if.else, %if.then
72 %storemerge.in = getelementptr inbounds %class.e, ptr %this, i64 0, i32 1, !dbg !45
73 %storemerge = load float, ptr %storemerge.in, align 4, !dbg !45
74 store float %storemerge, ptr %h, align 4, !dbg !45, !DIAssignID !43
75 call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %0) #4, !dbg !48
79 declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1
80 declare !dbg !49 dso_local void @_Zml1aRf(ptr nonnull align 4 dereferenceable(4)) local_unnamed_addr #2
81 declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1
82 declare void @llvm.dbg.assign(metadata, metadata, metadata, metadata, metadata, metadata) #3
85 !llvm.module.flags = !{!7, !8, !9, !1000}
88 !0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
89 !1 = distinct !DIGlobalVariable(name: "d", scope: !2, file: !3, line: 7, type: !6, isLocal: false, isDefinition: true)
90 !2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "clang version 12.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, splitDebugInlining: false, nameTableKind: None)
91 !3 = !DIFile(filename: "test.cpp", directory: "/")
94 !6 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
95 !7 = !{i32 7, !"Dwarf Version", i32 4}
96 !8 = !{i32 2, !"Debug Info Version", i32 3}
97 !9 = !{i32 1, !"wchar_size", i32 4}
98 !10 = !{!"clang version 12.0.0"}
99 !11 = distinct !DISubprogram(name: "i", linkageName: "_ZN1e1iEv", scope: !12, file: !3, line: 13, type: !25, scopeLine: 13, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, declaration: !24, retainedNodes: !28)
100 !12 = distinct !DICompositeType(tag: DW_TAG_class_type, name: "e", file: !3, line: 8, size: 64, flags: DIFlagTypePassByValue, elements: !13, identifier: "_ZTS1e")
101 !13 = !{!14, !22, !24}
102 !14 = !DIDerivedType(tag: DW_TAG_member, name: "g", scope: !12, file: !3, line: 9, baseType: !15, size: 24)
103 !15 = !DICompositeType(tag: DW_TAG_array_type, baseType: !16, size: 24, elements: !20)
104 !16 = distinct !DICompositeType(tag: DW_TAG_class_type, name: "b", file: !3, line: 3, size: 8, flags: DIFlagTypePassByValue, elements: !17, identifier: "_ZTS1b")
106 !18 = !DIDerivedType(tag: DW_TAG_member, name: "c", scope: !16, file: !3, line: 5, baseType: !19, size: 8, flags: DIFlagPublic)
107 !19 = distinct !DICompositeType(tag: DW_TAG_class_type, name: "a", file: !3, line: 1, size: 8, flags: DIFlagTypePassByValue, elements: !4, identifier: "_ZTS1a")
109 !21 = !DISubrange(count: 3)
110 !22 = !DIDerivedType(tag: DW_TAG_member, name: "f", scope: !12, file: !3, line: 10, baseType: !23, size: 32, offset: 32)
111 !23 = !DIBasicType(name: "float", size: 32, encoding: DW_ATE_float)
112 !24 = !DISubprogram(name: "i", linkageName: "_ZN1e1iEv", scope: !12, file: !3, line: 11, type: !25, scopeLine: 11, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized)
113 !25 = !DISubroutineType(types: !26)
115 !27 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !12, size: 64, flags: DIFlagArtificial | DIFlagObjectPointer)
117 !29 = !DILocalVariable(name: "this", arg: 1, scope: !11, type: !30, flags: DIFlagArtificial | DIFlagObjectPointer)
118 !30 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !12, size: 64)
119 !31 = !DILocalVariable(name: "h", scope: !11, file: !3, line: 14, type: !23)
120 !32 = distinct !DIAssignID()
121 !33 = !DILocation(line: 0, scope: !11)
122 !34 = !DILocation(line: 14, column: 3, scope: !11)
123 !35 = !DILocation(line: 15, column: 10, scope: !11)
124 !36 = !DILocation(line: 16, column: 7, scope: !37)
125 !37 = distinct !DILexicalBlock(scope: !11, file: !3, line: 16, column: 7)
126 !42 = !DILocation(line: 16, column: 7, scope: !11)
127 !43 = distinct !DIAssignID()
128 !44 = !DILocation(line: 17, column: 5, scope: !37)
129 !45 = !DILocation(line: 0, scope: !37)
130 !48 = !DILocation(line: 20, column: 1, scope: !11)
131 !49 = !DISubprogram(name: "operator*", linkageName: "_Zml1aRf", scope: !3, file: !3, line: 2, type: !50, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !4)
132 !50 = !DISubroutineType(types: !51)
133 !51 = !{null, !19, !52}
134 !52 = !DIDerivedType(tag: DW_TAG_reference_type, baseType: !23, size: 64)
135 !1000 = !{i32 7, !"debug-info-assignment-tracking", i1 true}