60e1c835d3
SROA needs to update llvm.dbg.assign intrinsics when it migrates debug info in response to alloca splitting; this patch updates the debug info migration code to handle DPVAssigns as well, making use of generic code to avoid duplication as much as possible.
103 lines
5.8 KiB
LLVM
103 lines
5.8 KiB
LLVM
; RUN: opt %s -S -passes=sroa -o - | FileCheck %s
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; RUN: opt --try-experimental-debuginfo-iterators %s -S -passes=sroa -o - | FileCheck %s
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;; Ensure that only the value-expression gets fragment info; that the
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;; address-expression remains untouched.
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;; $ cat test.cpp
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;; class a {
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;; float b[4];
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;; };
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;; class c {
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;; a m_fn1() const;
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;; void d() const;
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;; };
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;; void c::d() const { a e = m_fn1(); }
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;;
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;; Generated by grabbing IR before sroa in:
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;; $ clang++ -O2 -g -c test.cpp -Xclang -fexperimental-assignment-tracking
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; CHECK: %call = call
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; CHECK-NEXT: %0 = extractvalue { <2 x float>, <2 x float> } %call, 0
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; CHECK-NEXT: call void @llvm.dbg.value(metadata <2 x float> %0, metadata ![[var:[0-9]+]], metadata !DIExpression(DW_OP_LLVM_fragment, 0, 64))
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; CHECK-NEXT: %1 = extractvalue { <2 x float>, <2 x float> } %call, 1
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; CHECK-NEXT: call void @llvm.dbg.value(metadata <2 x float> %1, metadata ![[var]], metadata !DIExpression(DW_OP_LLVM_fragment, 64, 64))
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%class.c = type { i8 }
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%class.a = type { [4 x float] }
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; Function Attrs: uwtable
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define dso_local void @_ZNK1c1dEv(ptr %this) #0 align 2 !dbg !7 {
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entry:
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%this.addr = alloca ptr, align 8, !DIAssignID !29
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call void @llvm.dbg.assign(metadata i1 undef, metadata !26, metadata !DIExpression(), metadata !29, metadata ptr %this.addr, metadata !DIExpression()), !dbg !30
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%e = alloca %class.a, align 4, !DIAssignID !31
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call void @llvm.dbg.assign(metadata i1 undef, metadata !28, metadata !DIExpression(), metadata !31, metadata ptr %e, metadata !DIExpression()), !dbg !30
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store ptr %this, ptr %this.addr, align 8, !DIAssignID !36
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call void @llvm.dbg.assign(metadata ptr %this, metadata !26, metadata !DIExpression(), metadata !36, metadata ptr %this.addr, metadata !DIExpression()), !dbg !30
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%this1 = load ptr, ptr %this.addr, align 8
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%0 = bitcast ptr %e to ptr, !dbg !37
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%call = call { <2 x float>, <2 x float> } @_ZNK1c5m_fn1Ev(ptr %this1), !dbg !38
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%coerce.dive = getelementptr inbounds %class.a, ptr %e, i32 0, i32 0, !dbg !38
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%1 = bitcast ptr %coerce.dive to ptr, !dbg !38
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%2 = getelementptr inbounds { <2 x float>, <2 x float> }, ptr %1, i32 0, i32 0, !dbg !38
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%3 = extractvalue { <2 x float>, <2 x float> } %call, 0, !dbg !38
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store <2 x float> %3, ptr %2, align 4, !dbg !38, !DIAssignID !39
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call void @llvm.dbg.assign(metadata <2 x float> %3, metadata !28, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 64), metadata !39, metadata ptr %2, metadata !DIExpression()), !dbg !30
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%4 = getelementptr inbounds { <2 x float>, <2 x float> }, ptr %1, i32 0, i32 1, !dbg !38
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%5 = extractvalue { <2 x float>, <2 x float> } %call, 1, !dbg !38
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store <2 x float> %5, ptr %4, align 4, !dbg !38, !DIAssignID !40
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call void @llvm.dbg.assign(metadata <2 x float> %5, metadata !28, metadata !DIExpression(DW_OP_LLVM_fragment, 64, 64), metadata !40, metadata ptr %4, metadata !DIExpression()), !dbg !30
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%6 = bitcast ptr %e to ptr, !dbg !41
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ret void, !dbg !41
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}
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declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
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declare dso_local { <2 x float>, <2 x float> } @_ZNK1c5m_fn1Ev(ptr) #3
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declare void @llvm.dbg.assign(metadata, metadata, metadata, metadata, metadata, metadata) #1
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4, !5, !1000}
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!llvm.ident = !{!6}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 12.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)
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!1 = !DIFile(filename: "test.cpp", directory: "/")
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!2 = !{}
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!3 = !{i32 7, !"Dwarf Version", i32 4}
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!5 = !{i32 1, !"wchar_size", i32 4}
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!6 = !{!"clang version 12.0.0"}
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!7 = distinct !DISubprogram(name: "d", linkageName: "_ZNK1c1dEv", scope: !8, file: !1, line: 8, type: !23, scopeLine: 8, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, declaration: !22, retainedNodes: !25)
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!8 = distinct !DICompositeType(tag: DW_TAG_class_type, name: "c", file: !1, line: 4, size: 8, flags: DIFlagTypePassByValue, elements: !9, identifier: "_ZTS1c")
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!9 = !{!10, !22}
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!10 = !DISubprogram(name: "m_fn1", linkageName: "_ZNK1c5m_fn1Ev", scope: !8, file: !1, line: 5, type: !11, scopeLine: 5, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized)
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!11 = !DISubroutineType(types: !12)
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!12 = !{!13, !20}
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!13 = distinct !DICompositeType(tag: DW_TAG_class_type, name: "a", file: !1, line: 1, size: 128, flags: DIFlagTypePassByValue, elements: !14, identifier: "_ZTS1a")
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!14 = !{!15}
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!15 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !13, file: !1, line: 2, baseType: !16, size: 128)
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!16 = !DICompositeType(tag: DW_TAG_array_type, baseType: !17, size: 128, elements: !18)
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!17 = !DIBasicType(name: "float", size: 32, encoding: DW_ATE_float)
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!18 = !{!19}
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!19 = !DISubrange(count: 4)
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!20 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !21, size: 64, flags: DIFlagArtificial | DIFlagObjectPointer)
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!21 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !8)
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!22 = !DISubprogram(name: "d", linkageName: "_ZNK1c1dEv", scope: !8, file: !1, line: 6, type: !23, scopeLine: 6, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized)
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!23 = !DISubroutineType(types: !24)
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!24 = !{null, !20}
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!25 = !{!26, !28}
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!26 = !DILocalVariable(name: "this", arg: 1, scope: !7, type: !27, flags: DIFlagArtificial | DIFlagObjectPointer)
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!27 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !21, size: 64)
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!28 = !DILocalVariable(name: "e", scope: !7, file: !1, line: 8, type: !13)
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!29 = distinct !DIAssignID()
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!30 = !DILocation(line: 0, scope: !7)
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!31 = distinct !DIAssignID()
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!36 = distinct !DIAssignID()
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!37 = !DILocation(line: 8, column: 21, scope: !7)
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!38 = !DILocation(line: 8, column: 27, scope: !7)
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!39 = distinct !DIAssignID()
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!40 = distinct !DIAssignID()
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!41 = !DILocation(line: 8, column: 36, scope: !7)
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!1000 = !{i32 7, !"debug-info-assignment-tracking", i1 true}
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