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.
200 lines
12 KiB
LLVM
200 lines
12 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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;; $ cat test.cpp
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;; class a {
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;; protected:
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;; float b[4];
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;; };
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;; float c;
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;; class d : a {
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;; public:
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;; d() { b[3] = c; }
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;; void e() {}
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;; };
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;; d f();
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;; void g() {
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;; d j = f(), h = j, i = h;
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;; i.e();
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;; i = d();
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;; }
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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 that the dbg.assign value is scalar rather than a vector value because
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;; we don't have a way of indexing a vector from within a
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;; dbg.assign/DIExpression. Ensure that only the value-expression gets fragment
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;; info; that the address-expression remains untouched.
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; CHECK: %i.sroa.2.12.vec.insert = insertelement <2 x float> %i.sroa.2.0.vec.insert, float %2, i32 1, !dbg
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;; There's a few dbg intrinsics we're not interested in testing wedged in here.
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; CHECK-NEXT: dbg.value
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; CHECK-NEXT: dbg.value
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; CHECK-NEXT: call void @llvm.dbg.value(metadata float %2,{{.+}}, metadata !DIExpression(DW_OP_LLVM_fragment, 96, 32))
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%class.d = type { %class.a }
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%class.a = type { [4 x float] }
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$_ZN1d1eEv = comdat any
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$_ZN1dC2Ev = comdat any
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@c = dso_local local_unnamed_addr global float 0.000000e+00, align 4, !dbg !0
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; Function Attrs: uwtable
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define dso_local void @_Z1gv() local_unnamed_addr #0 !dbg !11 {
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entry:
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call void @llvm.dbg.assign(metadata i1 undef, metadata !15, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 64), metadata !32, metadata ptr undef, metadata !DIExpression()), !dbg !33
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call void @llvm.dbg.assign(metadata i1 undef, metadata !15, metadata !DIExpression(DW_OP_LLVM_fragment, 64, 64), metadata !34, metadata ptr undef, metadata !DIExpression()), !dbg !33
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call void @llvm.dbg.assign(metadata i1 undef, metadata !30, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 64), metadata !35, metadata ptr undef, metadata !DIExpression()), !dbg !33
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call void @llvm.dbg.assign(metadata i1 undef, metadata !30, metadata !DIExpression(DW_OP_LLVM_fragment, 64, 64), metadata !36, metadata ptr undef, metadata !DIExpression()), !dbg !33
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%i = alloca %class.d, align 8, !DIAssignID !37
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call void @llvm.dbg.assign(metadata i1 undef, metadata !31, metadata !DIExpression(), metadata !37, metadata ptr %i, metadata !DIExpression()), !dbg !33
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%ref.tmp = alloca %class.d, align 4
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%call = call { <2 x float>, <2 x float> } @_Z1fv(), !dbg !38
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%0 = extractvalue { <2 x float>, <2 x float> } %call, 0, !dbg !38
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call void @llvm.dbg.assign(metadata <2 x float> %0, metadata !15, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 64), metadata !39, metadata ptr undef, metadata !DIExpression()), !dbg !33
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%1 = extractvalue { <2 x float>, <2 x float> } %call, 1, !dbg !38
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call void @llvm.dbg.assign(metadata <2 x float> %1, metadata !15, metadata !DIExpression(DW_OP_LLVM_fragment, 64, 64), metadata !40, metadata ptr undef, metadata !DIExpression()), !dbg !33
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call void @llvm.dbg.assign(metadata <2 x float> %0, metadata !30, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 64), metadata !41, metadata ptr undef, metadata !DIExpression()), !dbg !33
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call void @llvm.dbg.assign(metadata <2 x float> %1, metadata !30, metadata !DIExpression(DW_OP_LLVM_fragment, 64, 64), metadata !42, metadata ptr undef, metadata !DIExpression()), !dbg !33
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%2 = bitcast ptr %i to ptr, !dbg !43
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%h.sroa.0.sroa.0.0.h.sroa.0.0..sroa_cast4.sroa_cast = bitcast ptr %i to ptr, !dbg !44
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store <2 x float> %0, ptr %h.sroa.0.sroa.0.0.h.sroa.0.0..sroa_cast4.sroa_cast, align 8, !dbg !44, !DIAssignID !45
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call void @llvm.dbg.assign(metadata <2 x float> %0, metadata !31, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 64), metadata !45, metadata ptr %h.sroa.0.sroa.0.0.h.sroa.0.0..sroa_cast4.sroa_cast, metadata !DIExpression()), !dbg !33
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%h.sroa.0.sroa.4.0.h.sroa.0.0..sroa_cast4.sroa_idx13 = getelementptr inbounds %class.d, ptr %i, i64 0, i32 0, i32 0, i64 2, !dbg !44
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%h.sroa.0.sroa.4.0.h.sroa.0.0..sroa_cast4.sroa_cast = bitcast ptr %h.sroa.0.sroa.4.0.h.sroa.0.0..sroa_cast4.sroa_idx13 to ptr, !dbg !44
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store <2 x float> %1, ptr %h.sroa.0.sroa.4.0.h.sroa.0.0..sroa_cast4.sroa_cast, align 8, !dbg !44, !DIAssignID !46
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call void @llvm.dbg.assign(metadata <2 x float> %1, metadata !31, metadata !DIExpression(DW_OP_LLVM_fragment, 64, 64), metadata !46, metadata ptr %h.sroa.0.sroa.4.0.h.sroa.0.0..sroa_cast4.sroa_cast, metadata !DIExpression()), !dbg !33
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call void @llvm.dbg.assign(metadata i1 undef, metadata !47, metadata !DIExpression(), metadata !51, metadata ptr undef, metadata !DIExpression()), !dbg !52
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call void @llvm.dbg.assign(metadata ptr %i, metadata !47, metadata !DIExpression(), metadata !54, metadata ptr undef, metadata !DIExpression()), !dbg !52
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%3 = bitcast ptr %ref.tmp to ptr, !dbg !55
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call void @llvm.dbg.assign(metadata i1 undef, metadata !56, metadata !DIExpression(), metadata !59, metadata ptr undef, metadata !DIExpression()), !dbg !60
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call void @llvm.dbg.assign(metadata ptr %ref.tmp, metadata !56, metadata !DIExpression(), metadata !62, metadata ptr undef, metadata !DIExpression()), !dbg !60
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%4 = load float, ptr @c, align 4, !dbg !63
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%arrayidx.i = getelementptr inbounds %class.d, ptr %ref.tmp, i64 0, i32 0, i32 0, i64 3, !dbg !69
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store float %4, ptr %arrayidx.i, align 4, !dbg !70
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call void @llvm.memcpy.p0i8.p0i8.i64(ptr nonnull align 8 dereferenceable(16) %2, ptr nonnull align 4 dereferenceable(16) %3, i64 16, i1 false), !dbg !71, !DIAssignID !72
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call void @llvm.dbg.assign(metadata i1 undef, metadata !31, metadata !DIExpression(), metadata !72, metadata ptr %2, metadata !DIExpression()), !dbg !33
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ret void, !dbg !74
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}
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declare !dbg !75 dso_local { <2 x float>, <2 x float> } @_Z1fv() local_unnamed_addr #2
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; Function Attrs: argmemonly nofree nosync nounwind willreturn
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declare void @llvm.memcpy.p0i8.p0i8.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #1
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; Function Attrs: nounwind uwtable
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define linkonce_odr dso_local void @_ZN1d1eEv(ptr %this) local_unnamed_addr #3 comdat align 2 !dbg !48 {
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entry:
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call void @llvm.dbg.assign(metadata i1 undef, metadata !47, metadata !DIExpression(), metadata !78, metadata ptr undef, metadata !DIExpression()), !dbg !79
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call void @llvm.dbg.assign(metadata ptr %this, metadata !47, metadata !DIExpression(), metadata !80, metadata ptr undef, metadata !DIExpression()), !dbg !79
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ret void, !dbg !81
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}
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; Function Attrs: nounwind uwtable
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define linkonce_odr dso_local void @_ZN1dC2Ev(ptr %this) unnamed_addr #3 comdat align 2 !dbg !57 {
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entry:
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call void @llvm.dbg.assign(metadata i1 undef, metadata !56, metadata !DIExpression(), metadata !82, metadata ptr undef, metadata !DIExpression()), !dbg !83
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call void @llvm.dbg.assign(metadata ptr %this, metadata !56, metadata !DIExpression(), metadata !84, metadata ptr undef, metadata !DIExpression()), !dbg !83
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%0 = load float, ptr @c, align 4, !dbg !85
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%arrayidx = getelementptr inbounds %class.d, ptr %this, i64 0, i32 0, i32 0, i64 3, !dbg !86
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store float %0, ptr %arrayidx, align 4, !dbg !87
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ret void, !dbg !88
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}
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declare void @llvm.dbg.assign(metadata, metadata, metadata, metadata, metadata, metadata) #4
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!llvm.dbg.cu = !{!2}
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!llvm.module.flags = !{!7, !8, !9, !1000}
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!llvm.ident = !{!10}
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!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
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!1 = distinct !DIGlobalVariable(name: "c", scope: !2, file: !3, line: 5, type: !6, isLocal: false, isDefinition: true)
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!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)
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!3 = !DIFile(filename: "test.cpp", directory: "/")
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!4 = !{}
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!5 = !{!0}
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!6 = !DIBasicType(name: "float", size: 32, encoding: DW_ATE_float)
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!7 = !{i32 7, !"Dwarf Version", i32 4}
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!8 = !{i32 2, !"Debug Info Version", i32 3}
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!9 = !{i32 1, !"wchar_size", i32 4}
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!10 = !{!"clang version 12.0.0"}
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!11 = distinct !DISubprogram(name: "g", linkageName: "_Z1gv", scope: !3, file: !3, line: 12, type: !12, scopeLine: 12, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !14)
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!12 = !DISubroutineType(types: !13)
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!13 = !{null}
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!14 = !{!15, !30, !31}
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!15 = !DILocalVariable(name: "j", scope: !11, file: !3, line: 13, type: !16)
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!16 = distinct !DICompositeType(tag: DW_TAG_class_type, name: "d", file: !3, line: 6, size: 128, flags: DIFlagTypePassByValue | DIFlagNonTrivial, elements: !17, identifier: "_ZTS1d")
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!17 = !{!18, !25, !29}
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!18 = !DIDerivedType(tag: DW_TAG_inheritance, scope: !16, baseType: !19, extraData: i32 0)
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!19 = distinct !DICompositeType(tag: DW_TAG_class_type, name: "a", file: !3, line: 1, size: 128, flags: DIFlagTypePassByValue, elements: !20, identifier: "_ZTS1a")
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!20 = !{!21}
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!21 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !19, file: !3, line: 3, baseType: !22, size: 128, flags: DIFlagProtected)
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!22 = !DICompositeType(tag: DW_TAG_array_type, baseType: !6, size: 128, elements: !23)
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!23 = !{!24}
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!24 = !DISubrange(count: 4)
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!25 = !DISubprogram(name: "d", scope: !16, file: !3, line: 8, type: !26, scopeLine: 8, flags: DIFlagPublic | DIFlagPrototyped, spFlags: DISPFlagOptimized)
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!26 = !DISubroutineType(types: !27)
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!27 = !{null, !28}
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!28 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !16, size: 64, flags: DIFlagArtificial | DIFlagObjectPointer)
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!29 = !DISubprogram(name: "e", linkageName: "_ZN1d1eEv", scope: !16, file: !3, line: 9, type: !26, scopeLine: 9, flags: DIFlagPublic | DIFlagPrototyped, spFlags: DISPFlagOptimized)
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!30 = !DILocalVariable(name: "h", scope: !11, file: !3, line: 13, type: !16)
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!31 = !DILocalVariable(name: "i", scope: !11, file: !3, line: 13, type: !16)
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!32 = distinct !DIAssignID()
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!33 = !DILocation(line: 0, scope: !11)
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!34 = distinct !DIAssignID()
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!35 = distinct !DIAssignID()
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!36 = distinct !DIAssignID()
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!37 = distinct !DIAssignID()
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!38 = !DILocation(line: 13, column: 9, scope: !11)
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!39 = distinct !DIAssignID()
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!40 = distinct !DIAssignID()
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!41 = distinct !DIAssignID()
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!42 = distinct !DIAssignID()
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!43 = !DILocation(line: 13, column: 3, scope: !11)
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!44 = !DILocation(line: 13, column: 25, scope: !11)
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!45 = distinct !DIAssignID()
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!46 = distinct !DIAssignID()
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!47 = !DILocalVariable(name: "this", arg: 1, scope: !48, type: !50, flags: DIFlagArtificial | DIFlagObjectPointer)
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!48 = distinct !DISubprogram(name: "e", linkageName: "_ZN1d1eEv", scope: !16, file: !3, line: 9, type: !26, scopeLine: 9, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, declaration: !29, retainedNodes: !49)
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!49 = !{!47}
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!50 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !16, size: 64)
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!51 = distinct !DIAssignID()
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!52 = !DILocation(line: 0, scope: !48, inlinedAt: !53)
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!53 = distinct !DILocation(line: 14, column: 5, scope: !11)
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!54 = distinct !DIAssignID()
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!55 = !DILocation(line: 15, column: 7, scope: !11)
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!56 = !DILocalVariable(name: "this", arg: 1, scope: !57, type: !50, flags: DIFlagArtificial | DIFlagObjectPointer)
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!57 = distinct !DISubprogram(name: "d", linkageName: "_ZN1dC2Ev", scope: !16, file: !3, line: 8, type: !26, scopeLine: 8, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, declaration: !25, retainedNodes: !58)
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!58 = !{!56}
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!59 = distinct !DIAssignID()
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!60 = !DILocation(line: 0, scope: !57, inlinedAt: !61)
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!61 = distinct !DILocation(line: 15, column: 7, scope: !11)
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!62 = distinct !DIAssignID()
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!63 = !DILocation(line: 8, column: 16, scope: !64, inlinedAt: !61)
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!64 = distinct !DILexicalBlock(scope: !57, file: !3, line: 8, column: 7)
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!69 = !DILocation(line: 8, column: 9, scope: !64, inlinedAt: !61)
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!70 = !DILocation(line: 8, column: 14, scope: !64, inlinedAt: !61)
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!71 = !DILocation(line: 15, column: 5, scope: !11)
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!72 = distinct !DIAssignID()
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!73 = !DILocation(line: 15, column: 3, scope: !11)
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!74 = !DILocation(line: 16, column: 1, scope: !11)
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!75 = !DISubprogram(name: "f", linkageName: "_Z1fv", scope: !3, file: !3, line: 11, type: !76, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !4)
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!76 = !DISubroutineType(types: !77)
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!77 = !{!16}
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!78 = distinct !DIAssignID()
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!79 = !DILocation(line: 0, scope: !48)
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!80 = distinct !DIAssignID()
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!81 = !DILocation(line: 9, column: 13, scope: !48)
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!82 = distinct !DIAssignID()
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!83 = !DILocation(line: 0, scope: !57)
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!84 = distinct !DIAssignID()
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!85 = !DILocation(line: 8, column: 16, scope: !64)
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!86 = !DILocation(line: 8, column: 9, scope: !64)
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!87 = !DILocation(line: 8, column: 14, scope: !64)
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!88 = !DILocation(line: 8, column: 19, scope: !57)
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!1000 = !{i32 7, !"debug-info-assignment-tracking", i1 true}
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