632f44e5ed
This patch trivially updates various opt passes to handle DPVAssigns. In all cases, this means some combination of generifying existing code to handle DPValues and DbgAssignIntrinsics, iterating over DPValues where previously we did not, or duplicating code for DbgAssignIntrinsics to the equivalent DPValue function (in inlining and salvageDebugInfo).
136 lines
7.0 KiB
LLVM
136 lines
7.0 KiB
LLVM
; RUN: opt -S %s -passes=simplifycfg -o - \
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; RUN: | FileCheck %s
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; RUN: opt --try-experimental-debuginfo-iterators -S %s -passes=simplifycfg -o - \
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; RUN: | FileCheck %s
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;; $ cat test.cpp
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;; class a {};
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;; void operator*(a, float &);
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;; class b {
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;; public:
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;; a c;
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;; };
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;; int d;
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;; class e {
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;; b g[3];
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;; float f;
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;; void i();
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;; };
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;; void e::i() {
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;; float h;
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;; g[d].c *h;
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;; if (h)
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;; h = f;
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;; else
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;; h = f;
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;; }
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;; Generated by grabbing IR before simplifycfg in:
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;; $ clang++ -O2 -g -c test.cpp -Xclang -fexperimental-assignment-tracking
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;; if.then and if.else each only have a dbg.assign and br instruction.
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;; SimplifyCFG will remove these blocks. Check that the dbg.assign intrinsics
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;; are sunk into the succ beforehand.
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; CHECK: entry:
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;; -- alloca dbg.assign
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; CHECK: call void @llvm.dbg.assign(metadata i1 undef
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;; -- sunk dbg.assigns
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; CHECK: call void @llvm.dbg.assign(metadata float undef, metadata ![[var:[0-9]+]], metadata !DIExpression(), metadata ![[id:[0-9]+]], metadata ptr %h, metadata !DIExpression()), !dbg
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; CHECK-NEXT: call void @llvm.dbg.assign(metadata float undef, metadata ![[var]], metadata !DIExpression(), metadata ![[id]], metadata ptr %h, metadata !DIExpression()), !dbg
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; CHECK-NEXT: %storemerge.in = getelementptr
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; CHECK-NEXT: %storemerge = load float
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; CHECK-NEXT: store float %storemerge, ptr %h, align 4{{.+}}!DIAssignID ![[id]]
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; CHECK: ret void
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%class.e = type { [3 x %class.b], float }
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%class.b = type { %class.a }
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%class.a = type { i8 }
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@d = dso_local local_unnamed_addr global i32 0, align 4, !dbg !0
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; Function Attrs: uwtable
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define dso_local void @_ZN1e1iEv(ptr %this) local_unnamed_addr #0 align 2 !dbg !11 {
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entry:
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%h = alloca float, align 4, !DIAssignID !32
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call void @llvm.dbg.assign(metadata i1 undef, metadata !31, metadata !DIExpression(), metadata !32, metadata ptr %h, metadata !DIExpression()), !dbg !33
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%0 = bitcast ptr %h to ptr, !dbg !34
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call void @llvm.lifetime.start.p0i8(i64 4, ptr nonnull %0) #4, !dbg !34
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call void @_Zml1aRf(ptr nonnull align 4 dereferenceable(4) %h), !dbg !35
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%1 = load float, ptr %h, align 4, !dbg !36
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%tobool = fcmp une float %1, 0.000000e+00, !dbg !36
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br i1 %tobool, label %if.then, label %if.else, !dbg !42
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if.then: ; preds = %entry
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call void @llvm.dbg.assign(metadata float undef, metadata !31, metadata !DIExpression(), metadata !43, metadata ptr %h, metadata !DIExpression()), !dbg !33
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br label %if.end, !dbg !44
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if.else: ; preds = %entry
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call void @llvm.dbg.assign(metadata float undef, metadata !31, metadata !DIExpression(), metadata !43, metadata ptr %h, metadata !DIExpression()), !dbg !33
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br label %if.end
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if.end: ; preds = %if.else, %if.then
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%storemerge.in = getelementptr inbounds %class.e, ptr %this, i64 0, i32 1, !dbg !45
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%storemerge = load float, ptr %storemerge.in, align 4, !dbg !45
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store float %storemerge, ptr %h, align 4, !dbg !45, !DIAssignID !43
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call void @llvm.lifetime.end.p0i8(i64 4, ptr nonnull %0) #4, !dbg !48
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ret void, !dbg !48
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}
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declare void @llvm.lifetime.start.p0i8(i64 immarg, ptr nocapture) #1
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declare !dbg !49 dso_local void @_Zml1aRf(ptr nonnull align 4 dereferenceable(4)) local_unnamed_addr #2
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declare void @llvm.lifetime.end.p0i8(i64 immarg, ptr nocapture) #1
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declare void @llvm.dbg.assign(metadata, metadata, metadata, metadata, metadata, metadata) #3
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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: "d", scope: !2, file: !3, line: 7, 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: "int", size: 32, encoding: DW_ATE_signed)
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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: "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)
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!12 = distinct !DICompositeType(tag: DW_TAG_class_type, name: "e", file: !3, line: 8, size: 64, flags: DIFlagTypePassByValue, elements: !13, identifier: "_ZTS1e")
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!13 = !{!14, !22, !24}
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!14 = !DIDerivedType(tag: DW_TAG_member, name: "g", scope: !12, file: !3, line: 9, baseType: !15, size: 24)
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!15 = !DICompositeType(tag: DW_TAG_array_type, baseType: !16, size: 24, elements: !20)
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!16 = distinct !DICompositeType(tag: DW_TAG_class_type, name: "b", file: !3, line: 3, size: 8, flags: DIFlagTypePassByValue, elements: !17, identifier: "_ZTS1b")
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!17 = !{!18}
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!18 = !DIDerivedType(tag: DW_TAG_member, name: "c", scope: !16, file: !3, line: 5, baseType: !19, size: 8, flags: DIFlagPublic)
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!19 = distinct !DICompositeType(tag: DW_TAG_class_type, name: "a", file: !3, line: 1, size: 8, flags: DIFlagTypePassByValue, elements: !4, identifier: "_ZTS1a")
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!20 = !{!21}
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!21 = !DISubrange(count: 3)
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!22 = !DIDerivedType(tag: DW_TAG_member, name: "f", scope: !12, file: !3, line: 10, baseType: !23, size: 32, offset: 32)
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!23 = !DIBasicType(name: "float", size: 32, encoding: DW_ATE_float)
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!24 = !DISubprogram(name: "i", linkageName: "_ZN1e1iEv", scope: !12, file: !3, line: 11, type: !25, scopeLine: 11, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized)
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!25 = !DISubroutineType(types: !26)
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!26 = !{null, !27}
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!27 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !12, size: 64, flags: DIFlagArtificial | DIFlagObjectPointer)
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!28 = !{!29, !31}
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!29 = !DILocalVariable(name: "this", arg: 1, scope: !11, type: !30, flags: DIFlagArtificial | DIFlagObjectPointer)
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!30 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !12, size: 64)
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!31 = !DILocalVariable(name: "h", scope: !11, file: !3, line: 14, type: !23)
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!32 = distinct !DIAssignID()
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!33 = !DILocation(line: 0, scope: !11)
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!34 = !DILocation(line: 14, column: 3, scope: !11)
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!35 = !DILocation(line: 15, column: 10, scope: !11)
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!36 = !DILocation(line: 16, column: 7, scope: !37)
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!37 = distinct !DILexicalBlock(scope: !11, file: !3, line: 16, column: 7)
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!42 = !DILocation(line: 16, column: 7, scope: !11)
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!43 = distinct !DIAssignID()
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!44 = !DILocation(line: 17, column: 5, scope: !37)
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!45 = !DILocation(line: 0, scope: !37)
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!48 = !DILocation(line: 20, column: 1, scope: !11)
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!49 = !DISubprogram(name: "operator*", linkageName: "_Zml1aRf", scope: !3, file: !3, line: 2, type: !50, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !4)
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!50 = !DISubroutineType(types: !51)
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!51 = !{null, !19, !52}
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!52 = !DIDerivedType(tag: DW_TAG_reference_type, baseType: !23, size: 64)
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!1000 = !{i32 7, !"debug-info-assignment-tracking", i1 true}
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