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[DebugInfo][SimplifyCFGPass] Fix the missing debug location update fo…
…r the new br instruction (llvm#97389) Fix llvm#97388 .
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72
llvm/test/Transforms/SimplifyCFG/preserving-debugloc-br.ll
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Original file line number | Diff line number | Diff line change |
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; RUN: opt -S -passes=simplifycfg < %s | FileCheck %s | ||
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; Check that SimplifyCFGPass's performBlockTailMerging() propagates | ||
; the debug location of the old block terminator to the new branch | ||
; instruction. | ||
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define i32 @foo(i64 %x, i64 %y) !dbg !5 { | ||
; CHECK-LABEL: define i32 @foo( | ||
; CHECK: a: | ||
; CHECK: br label %[[COMMON_RET:.*]], !dbg [[DBG14:![0-9]+]] | ||
; CHECK: b: | ||
; CHECK: br label %[[COMMON_RET]], !dbg [[DBG17:![0-9]+]] | ||
; | ||
entry: | ||
%eq = icmp eq i64 %x, %y, !dbg !8 | ||
br i1 %eq, label %b, label %switch, !dbg !9 | ||
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switch: ; preds = %entry | ||
%lt = icmp slt i64 %x, %y, !dbg !10 | ||
%qux = select i1 %lt, i32 0, i32 2, !dbg !11 | ||
switch i32 %qux, label %bees [ | ||
i32 0, label %a | ||
i32 1, label %b | ||
i32 2, label %b | ||
], !dbg !12 | ||
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a: ; preds = %switch | ||
tail call void @bees.a(), !dbg !13 | ||
ret i32 1, !dbg !14 | ||
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b: ; preds = %switch, %switch, %entry | ||
%retval = phi i32 [ 0, %switch ], [ 0, %switch ], [ 2, %entry ], !dbg !15 | ||
tail call void @bees.b(), !dbg !16 | ||
ret i32 %retval, !dbg !17 | ||
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bees: ; preds = %switch | ||
tail call void @llvm.trap(), !dbg !18 | ||
unreachable, !dbg !19 | ||
} | ||
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declare void @llvm.trap() | ||
declare void @bees.a() | ||
declare void @bees.b() | ||
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!llvm.dbg.cu = !{!0} | ||
!llvm.debugify = !{!2, !3} | ||
!llvm.module.flags = !{!4} | ||
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; CHECK: [[DBG14]] = !DILocation(line: 7, | ||
; CHECK: [[DBG17]] = !DILocation(line: 10, | ||
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!0 = distinct !DICompileUnit(language: DW_LANG_C, file: !1, producer: "debugify", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug) | ||
!1 = !DIFile(filename: "main.ll", directory: "/") | ||
!2 = !{i32 12} | ||
!3 = !{i32 0} | ||
!4 = !{i32 2, !"Debug Info Version", i32 3} | ||
!5 = distinct !DISubprogram(name: "foo", linkageName: "foo", scope: null, file: !1, line: 1, type: !6, scopeLine: 1, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0) | ||
!6 = !DISubroutineType(types: !7) | ||
!7 = !{} | ||
!8 = !DILocation(line: 1, column: 1, scope: !5) | ||
!9 = !DILocation(line: 2, column: 1, scope: !5) | ||
!10 = !DILocation(line: 3, column: 1, scope: !5) | ||
!11 = !DILocation(line: 4, column: 1, scope: !5) | ||
!12 = !DILocation(line: 5, column: 1, scope: !5) | ||
!13 = !DILocation(line: 6, column: 1, scope: !5) | ||
!14 = !DILocation(line: 7, column: 1, scope: !5) | ||
!15 = !DILocation(line: 8, column: 1, scope: !5) | ||
!16 = !DILocation(line: 9, column: 1, scope: !5) | ||
!17 = !DILocation(line: 10, column: 1, scope: !5) | ||
!18 = !DILocation(line: 11, column: 1, scope: !5) | ||
!19 = !DILocation(line: 12, column: 1, scope: !5) |