6a1f52150a
RFC: https://discourse.llvm.org/t/rfc-improving-is-stmt-placement-for-better-interactive-debugging/82668
75 lines
2.8 KiB
LLVM
75 lines
2.8 KiB
LLVM
; RUN: opt --passes=loop-rotate %s -S -o - | FileCheck %s
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;; Rotate:
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;; +------------------> for.end.
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;; |
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;; entry -> for.cond -> for.body
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;; ^ |
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;; +-----------+
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;;
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;; Into:
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;;
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;; +------> for.end.
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;; |
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;; entry (+ for.cond`0) -> for.body (+ for.cond) -+
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;; ^ |
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;; +-------------------+
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;; Check for.cond's duplicated store and br have their source atoms remapped.
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; CHECK: entry:
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; CHECK: store i32 0, ptr @glob, align 16, !dbg [[G3R1:![0-9]+]]
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; CHECK: br label %for.body, !dbg [[G4R1:![0-9]+]]
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;
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; CHECK: for.body:
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; CHECK: store i32 {{.*}}, ptr @glob, align 16, !dbg [[G1R1:![0-9]+]]
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; CHECK: [[CMP:%.*]] = icmp slt i32 {{.*}}, 100, !dbg [[G2R2:![0-9]+]]
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; CHECK: br i1 [[CMP]], label %for.body, label %for.end, !dbg [[G2R1:![0-9]+]]
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;
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; CHECK: [[G3R1]] = !DILocation(line: 4{{.*}}, atomGroup: 3, atomRank: 1)
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; CHECK: [[G4R1]] = !DILocation(line: 6{{.*}}, atomGroup: 4, atomRank: 1)
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; CHECK: [[G1R1]] = !DILocation(line: 4{{.*}}, atomGroup: 1, atomRank: 1)
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; CHECK: [[G2R2]] = !DILocation(line: 5{{.*}}, atomGroup: 2, atomRank: 2)
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; CHECK: [[G2R1]] = !DILocation(line: 6{{.*}}, atomGroup: 2, atomRank: 1)
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@glob = global i32 0
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define void @test1() #0 !dbg !5 {
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entry:
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%array = alloca [20 x i32], align 16
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br label %for.cond
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for.cond: ; preds = %for.body, %entry
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%i.0 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
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store i32 %i.0, ptr @glob, align 16, !dbg !DILocation(line: 4, scope: !5, atomGroup: 1, atomRank: 1)
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%cmp = icmp slt i32 %i.0, 100, !dbg !DILocation(line: 5, scope: !5, atomGroup: 2, atomRank: 2)
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br i1 %cmp, label %for.body, label %for.end, !dbg !DILocation(line: 6, scope: !5, atomGroup: 2, atomRank: 1)
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for.body: ; preds = %for.cond
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%inc = add nsw i32 %i.0, 1
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store i32 0, ptr %array, align 16
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br label %for.cond
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for.end: ; preds = %for.cond
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%arrayidx.lcssa = phi ptr [ %array, %for.cond ]
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call void @g(ptr %arrayidx.lcssa)
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ret void
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}
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declare void @g(ptr)
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attributes #0 = { nounwind ssp }
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attributes #1 = { noduplicate }
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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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