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).
100 lines
4.9 KiB
LLVM
100 lines
4.9 KiB
LLVM
; RUN: opt -passes=mem2reg -S %s -o - \
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; RUN: | FileCheck %s --implicit-check-not="call void @llvm.dbg"
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; RUN: opt --try-experimental-debuginfo-iterators -passes=mem2reg -S %s -o - \
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; RUN: | FileCheck %s --implicit-check-not="call void @llvm.dbg"
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;; Test assignment tracking debug info when mem2reg promotes an alloca with
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;; stores requiring insertion of a phi. Check the output when the stores are
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;; tagged and also untagged (test manually updated for the latter by linking a
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;; dbg.assgin for another variable "b" to the alloca).
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; CHECK: entry:
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; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 %a, metadata ![[B:[0-9]+]]
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; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 %a, metadata ![[A:[0-9]+]]
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; CHECK: if.then:
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; CHECK-NEXT: %add =
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; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 %add, metadata ![[B]]
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; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 %add, metadata ![[A]]
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; CHECK: if.else:
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; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 -1, metadata ![[B]]
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; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 -1, metadata ![[A]]
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; CHECK: if.end:
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; CHECK-NEXT: %a.addr.0 = phi i32
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; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 %a.addr.0, metadata ![[A]]
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; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 %a.addr.0, metadata ![[B]]
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; CHECK-DAG: ![[A]] = !DILocalVariable(name: "a",
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; CHECK-DAG: ![[B]] = !DILocalVariable(name: "b",
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;; $ cat test.cpp
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;; int f(int a) {
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;; if (a)
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;; a += 1;
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;; else
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;; a = -1;
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;; return a;
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;; }
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define dso_local noundef i32 @_Z1fi(i32 noundef %a) #0 !dbg !7 {
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entry:
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%a.addr = alloca i32, align 4, !DIAssignID !13
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call void @llvm.dbg.assign(metadata i1 undef, metadata !12, metadata !DIExpression(), metadata !13, metadata ptr %a.addr, metadata !DIExpression()), !dbg !14
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call void @llvm.dbg.assign(metadata i1 undef, metadata !30, metadata !DIExpression(), metadata !13, metadata ptr %a.addr, metadata !DIExpression()), !dbg !14
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store i32 %a, ptr %a.addr, align 4, !DIAssignID !19
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call void @llvm.dbg.assign(metadata i32 %a, metadata !12, metadata !DIExpression(), metadata !19, metadata ptr %a.addr, metadata !DIExpression()), !dbg !14
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%0 = load i32, ptr %a.addr, align 4, !dbg !20
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%tobool = icmp ne i32 %0, 0, !dbg !20
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br i1 %tobool, label %if.then, label %if.else, !dbg !22
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if.then: ; preds = %entry
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%1 = load i32, ptr %a.addr, align 4, !dbg !23
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%add = add nsw i32 %1, 1, !dbg !23
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store i32 %add, ptr %a.addr, align 4, !dbg !23, !DIAssignID !24
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call void @llvm.dbg.assign(metadata i32 %add, metadata !12, metadata !DIExpression(), metadata !24, metadata ptr %a.addr, metadata !DIExpression()), !dbg !14
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br label %if.end, !dbg !25
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if.else: ; preds = %entry
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store i32 -1, ptr %a.addr, align 4, !dbg !26, !DIAssignID !27
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call void @llvm.dbg.assign(metadata i32 -1, metadata !12, metadata !DIExpression(), metadata !27, metadata ptr %a.addr, metadata !DIExpression()), !dbg !14
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br label %if.end
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if.end: ; preds = %if.else, %if.then
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%2 = load i32, ptr %a.addr, align 4, !dbg !28
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ret i32 %2, !dbg !29
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}
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declare void @llvm.dbg.assign(metadata, metadata, metadata, metadata, metadata, metadata)
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!2, !3, !4, !5, !1000}
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!llvm.ident = !{!6}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang version 14.0.0", isOptimized: true, 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 7, !"uwtable", i32 1}
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!6 = !{!"clang version 14.0.0"}
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!7 = distinct !DISubprogram(name: "f", linkageName: "_Z1fi", scope: !1, file: !1, line: 1, type: !8, scopeLine: 1, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !11)
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!8 = !DISubroutineType(types: !9)
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!9 = !{!10, !10}
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!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!11 = !{!12}
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!12 = !DILocalVariable(name: "a", arg: 1, scope: !7, file: !1, line: 1, type: !10)
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!13 = distinct !DIAssignID()
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!14 = !DILocation(line: 0, scope: !7)
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!19 = distinct !DIAssignID()
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!20 = !DILocation(line: 2, column: 7, scope: !21)
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!21 = distinct !DILexicalBlock(scope: !7, file: !1, line: 2, column: 7)
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!22 = !DILocation(line: 2, column: 7, scope: !7)
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!23 = !DILocation(line: 3, column: 7, scope: !21)
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!24 = distinct !DIAssignID()
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!25 = !DILocation(line: 3, column: 5, scope: !21)
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!26 = !DILocation(line: 5, column: 7, scope: !21)
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!27 = distinct !DIAssignID()
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!28 = !DILocation(line: 6, column: 10, scope: !7)
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!29 = !DILocation(line: 6, column: 3, scope: !7)
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!30 = !DILocalVariable(name: "b", arg: 2, scope: !7, file: !1, line: 1, type: !10)
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!1000 = !{i32 7, !"debug-info-assignment-tracking", i1 true}
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