40ac25e309
RFC: https://discourse.llvm.org/t/rfc-improving-is-stmt-placement-for-better-interactive-debugging/82668
79 lines
2.6 KiB
LLVM
79 lines
2.6 KiB
LLVM
; RUN: opt %s --passes=jump-threading -S -o - -S | FileCheck %s
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;; +-> T1 -+
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;; | v +-> T2.
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;; Entry -+ Merge -+
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;; | ^ +-> F2.
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;; +-> F1 -+
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;;
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;; Thread T1 -> T2 and F1 -> F2 through Merge.
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;;
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;; +-> T1 (+ Merge + T2).
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;; |
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;; Entry -+
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;; |
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;; +-> F1 (+ Merge + F2).
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;;
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;; Check the duplicated instructions atoms are remapped.
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; CHECK: T2:
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; CHECK-NEXT: %v1 = call i32 @f1()
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; CHECK-NEXT: %C3 = add i32 %v1, 1, !dbg [[G2R2:!.*]]
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; CHECK-NEXT: store i32 %C3, ptr %p, align 4, !dbg [[G2R1:!.*]]
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; CHECK: F2:
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; CHECK-NEXT: %v2 = call i32 @f2()
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; CHECK-NEXT: %C = add i32 %v2, 1, !dbg [[G1R2:!.*]]
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; CHECK-NEXT: store i32 %C, ptr %p, align 4, !dbg [[G1R1:!.*]]
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; CHECK: [[G2R2]] = !DILocation(line: 8, column: 1, scope: ![[#]], atomGroup: 2, atomRank: 2)
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; CHECK: [[G2R1]] = !DILocation(line: 8, column: 1, scope: ![[#]], atomGroup: 2, atomRank: 1)
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; CHECK: [[G1R2]] = !DILocation(line: 8, column: 1, scope: ![[#]], atomGroup: 1, atomRank: 2)
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; CHECK: [[G1R1]] = !DILocation(line: 8, column: 1, scope: ![[#]], atomGroup: 1, atomRank: 1)
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define i32 @test1(i1 %cond, ptr %p) !dbg !5 {
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br i1 %cond, label %T1, label %F1
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T1: ; preds = %0
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%v1 = call i32 @f1()
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br label %Merge
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F1: ; preds = %0
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%v2 = call i32 @f2()
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br label %Merge
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Merge: ; preds = %F1, %T1
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%A = phi i1 [ true, %T1 ], [ false, %F1 ]
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%B = phi i32 [ %v1, %T1 ], [ %v2, %F1 ]
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%C = add i32 %B, 1, !dbg !8
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store i32 %C, ptr %p, align 4, !dbg !9
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br i1 %A, label %T2, label %F2
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T2: ; preds = %Merge
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call void @f3()
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ret i32 %B
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F2: ; preds = %Merge
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ret i32 %B
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}
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declare i32 @f1()
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declare i32 @f2()
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declare void @f3()
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!llvm.dbg.cu = !{!0}
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!llvm.debugify = !{!2, !3}
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!llvm.module.flags = !{!4}
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!0 = distinct !DICompileUnit(language: DW_LANG_C, file: !1, producer: "debugify", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug)
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!1 = !DIFile(filename: "test.ll", directory: "/")
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!2 = !{i32 12}
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!3 = !{i32 0}
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!5 = distinct !DISubprogram(name: "test1", linkageName: "test1", scope: null, file: !1, line: 1, type: !6, scopeLine: 1, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0)
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!6 = !DISubroutineType(types: !7)
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!7 = !{}
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!8 = !DILocation(line: 8, column: 1, scope: !5, atomGroup: 1, atomRank: 2)
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!9 = !DILocation(line: 8, column: 1, scope: !5, atomGroup: 1, atomRank: 1)
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