19ee7ffdac
When AggressiveInstCombine replaces a memchr with a switch instruction, it currently drops the DILocation for that memchr. This patch changes this, propagating the memchr DILocation to all the generated instructions that replace it. Found using https://github.com/llvm/llvm-project/pull/107279.
45 lines
1.9 KiB
LLVM
45 lines
1.9 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
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; RUN: opt -S -p=aggressive-instcombine < %s | FileCheck %s
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;; Tests that when we inline a simple memchr, we transfer its DILocation to the
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;; generated instructions.
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@.str.30 = constant [3 x i8] c"/\\\00"
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define i32 @foo(i32 %conv22) {
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; CHECK-LABEL: define i32 @foo(
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; CHECK-SAME: i32 [[CONV22:%.*]]) {
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; CHECK-NEXT: [[ENTRY:.*:]]
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; CHECK-NEXT: [[TMP0:%.*]] = trunc i32 [[CONV22]] to i8, !dbg [[DBG3:![0-9]+]]
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; CHECK-NEXT: switch i8 [[TMP0]], label %[[ENTRY_SPLIT:.*]] [
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; CHECK-NEXT: ], !dbg [[DBG3]]
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; CHECK: [[MEMCHR_SUCCESS:.*:]]
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; CHECK-NEXT: br label %[[ENTRY_SPLIT]], !dbg [[DBG3]]
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; CHECK: [[ENTRY_SPLIT]]:
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; CHECK-NEXT: ret i32 0
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;
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entry:
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%memchr = call ptr @memchr(ptr @.str.30, i32 %conv22, i64 0), !dbg !3
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ret i32 0
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}
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declare ptr @memchr(ptr, i32, i64)
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!2}
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!0 = distinct !DICompileUnit(language: DW_LANG_C11, file: !1, producer: "clang version 20.0.0git")
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!1 = !DIFile(filename: "test.c", directory: "/tmp")
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!2 = !{i32 2, !"Debug Info Version", i32 3}
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!3 = !DILocation(line: 19, column: 42, scope: !4)
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!4 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 174, type: !5, unit: !0, retainedNodes: !6)
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!5 = !DISubroutineType(types: !6)
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!6 = !{}
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;.
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; CHECK: [[META0:![0-9]+]] = distinct !DICompileUnit(language: DW_LANG_C11, file: [[META1:![0-9]+]], producer: "{{.*}}clang version {{.*}}", isOptimized: false, runtimeVersion: 0, emissionKind: NoDebug)
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; CHECK: [[META1]] = !DIFile(filename: "test.c", directory: {{.*}})
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; CHECK: [[DBG3]] = !DILocation(line: 19, column: 42, scope: [[META4:![0-9]+]])
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; CHECK: [[META4]] = distinct !DISubprogram(name: "foo", scope: [[META1]], file: [[META1]], line: 174, type: [[META5:![0-9]+]], spFlags: DISPFlagDefinition, unit: [[META0]], retainedNodes: [[META6:![0-9]+]])
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; CHECK: [[META5]] = !DISubroutineType(types: [[META6]])
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; CHECK: [[META6]] = !{}
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;.
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