d3a6a90ae5
This is the final patch for DPVAssign support, implementing the actual creation of DPVAssigns and allowing them to be converted along with dbg.values and dbg.declares. Numerous tests landed in previous patches will no longer be rotten after this patch lands (previously they would trivially pass due to DPVAssigns not actually being used), and a further batch of tests have been added here that require the changes in this patch before they pass.
83 lines
4.3 KiB
LLVM
83 lines
4.3 KiB
LLVM
; RUN: opt -passes=declare-to-assign -S %s -o - | FileCheck %s
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; RUN: opt --try-experimental-debuginfo-iterators -passes=declare-to-assign -S %s -o - | FileCheck %s
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;; Check assignment tracking debug info for structured bindings. FIXME only
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;; variables at offset 0 in the backing alloca are currently tracked with the
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;; feature.
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;; struct two { int a, b; };
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;; two get();
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;; int fun() {
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;; auto [a,b] = get();
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;; return a * b;
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;; }
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; CHECK: %0 = alloca %struct.two, align 4, !DIAssignID ![[ID1:[0-9]+]]
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; CHECK-NEXT: llvm.dbg.assign(metadata i1 undef, metadata ![[AGGR:[0-9]+]], metadata !DIExpression(), metadata ![[ID1]], metadata ptr %0, metadata !DIExpression())
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; CHECK-NEXT: llvm.dbg.assign(metadata i1 undef, metadata ![[A:[0-9]+]], metadata !DIExpression(), metadata ![[ID1]], metadata ptr %0, metadata !DIExpression())
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; CHECK-NEXT: llvm.dbg.declare(metadata ptr %0, metadata ![[B:[0-9]+]], metadata !DIExpression(DW_OP_plus_uconst, 4))
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; CHECK: store i64 %call, ptr %0, align 4,{{.*}}, !DIAssignID ![[ID2:[0-9]+]]
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; CHECK-NEXT: llvm.dbg.assign(metadata i64 %call, metadata ![[AGGR]], metadata !DIExpression(), metadata ![[ID2]], metadata ptr %0, metadata !DIExpression())
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; CHECK-NEXT: llvm.dbg.assign(metadata i64 %call, metadata ![[A]], metadata !DIExpression(), metadata ![[ID2]], metadata ptr %0, metadata !DIExpression())
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; CHECK: ![[AGGR]] = !DILocalVariable(scope:
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; CHECK: ![[A]] = !DILocalVariable(name: "a", scope:
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; CHECK: ![[B]] = !DILocalVariable(name: "b", scope:
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%struct.two = type { i32, i32 }
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define dso_local noundef i32 @_Z3funv() #0 !dbg !10 {
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entry:
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%0 = alloca %struct.two, align 4
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call void @llvm.dbg.declare(metadata ptr %0, metadata !15, metadata !DIExpression()), !dbg !16
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call void @llvm.dbg.declare(metadata ptr %0, metadata !17, metadata !DIExpression(DW_OP_plus_uconst, 4)), !dbg !18
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call void @llvm.dbg.declare(metadata ptr %0, metadata !19, metadata !DIExpression()), !dbg !24
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%call = call i64 @_Z3getv(), !dbg !25
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store i64 %call, ptr %0, align 4, !dbg !25
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%a = getelementptr inbounds %struct.two, ptr %0, i32 0, i32 0, !dbg !16
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%1 = load i32, ptr %a, align 4, !dbg !26
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%b = getelementptr inbounds %struct.two, ptr %0, i32 0, i32 1, !dbg !18
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%2 = load i32, ptr %b, align 4, !dbg !27
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%mul = mul nsw i32 %1, %2, !dbg !28
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ret i32 %mul, !dbg !29
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}
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declare void @llvm.dbg.declare(metadata, metadata, metadata)
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declare i64 @_Z3getv()
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!2, !3, !4, !5, !6, !7, !8}
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!llvm.ident = !{!9}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang version 17.0.0)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, splitDebugInlining: false, nameTableKind: None)
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!1 = !DIFile(filename: "test.cpp", directory: "/")
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!2 = !{i32 7, !"Dwarf Version", i32 5}
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!3 = !{i32 2, !"Debug Info Version", i32 3}
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!4 = !{i32 1, !"wchar_size", i32 4}
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!5 = !{i32 8, !"PIC Level", i32 2}
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!6 = !{i32 7, !"PIE Level", i32 2}
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!7 = !{i32 7, !"uwtable", i32 2}
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!8 = !{i32 7, !"frame-pointer", i32 2}
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!9 = !{!"clang version 17.0.0)"}
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!10 = distinct !DISubprogram(name: "fun", linkageName: "_Z3funv", scope: !1, file: !1, line: 3, type: !11, scopeLine: 3, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !14)
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!11 = !DISubroutineType(types: !12)
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!12 = !{!13}
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!13 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!14 = !{}
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!15 = !DILocalVariable(name: "a", scope: !10, file: !1, line: 4, type: !13)
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!16 = !DILocation(line: 4, column: 9, scope: !10)
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!17 = !DILocalVariable(name: "b", scope: !10, file: !1, line: 4, type: !13)
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!18 = !DILocation(line: 4, column: 11, scope: !10)
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!19 = !DILocalVariable(scope: !10, file: !1, line: 4, type: !20)
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!20 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "two", file: !1, line: 1, size: 64, flags: DIFlagTypePassByValue, elements: !21, identifier: "_ZTS3two")
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!21 = !{!22, !23}
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!22 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !20, file: !1, line: 1, baseType: !13, size: 32)
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!23 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !20, file: !1, line: 1, baseType: !13, size: 32, offset: 32)
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!24 = !DILocation(line: 4, column: 8, scope: !10)
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!25 = !DILocation(line: 4, column: 16, scope: !10)
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!26 = !DILocation(line: 5, column: 10, scope: !10)
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!27 = !DILocation(line: 5, column: 14, scope: !10)
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!28 = !DILocation(line: 5, column: 12, scope: !10)
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!29 = !DILocation(line: 5, column: 3, scope: !10)
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