69 lines
2.4 KiB
LLVM
69 lines
2.4 KiB
LLVM
; RUN: opt < %s -simplifycfg -S | FileCheck %s
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; Check if the debug info for hoisted store for "ret = 0" is removed
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;
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; int foo(int x) {
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; int ret = 1;
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; if (x)
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; ret = 0;
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; return ret;
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; }
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;
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; CHECK: store i32 1,{{.+}}!dbg ![[DLOC1:[0-9]+]]
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; CHECK: icmp ne {{.+}}!dbg ![[DLOC2:[0-9]+]]
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; CHECK: [[VREG:%[^ ]+]] = select
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; CHECK: store i32 [[VREG]]
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; CHECK-NOT: !dbg
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; CHECK-SAME: {{$}}
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; CHECK: ret {{.+}}!dbg ![[DLOC3:[0-9]+]]
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; CHECK: ![[DLOC1]] = !DILocation(line: 2
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; CHECK: ![[DLOC2]] = !DILocation(line: 3
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; CHECK: ![[DLOC3]] = !DILocation(line: 5
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target triple = "x86_64-unknown-linux-gnu"
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; Function Attrs: noinline nounwind uwtable
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define i32 @foo(i32) !dbg !6 {
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%2 = alloca i32, align 4
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%3 = alloca i32, align 4
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store i32 %0, i32* %2, align 4
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store i32 1, i32* %3, align 4, !dbg !14
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%4 = load i32, i32* %2, align 4, !dbg !15
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%5 = icmp ne i32 %4, 0, !dbg !15
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br i1 %5, label %6, label %7, !dbg !17
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; <label>:6: ; preds = %1
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store i32 0, i32* %3, align 4, !dbg !18
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br label %7, !dbg !19
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; <label>:7: ; preds = %6, %1
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%8 = load i32, i32* %3, align 4, !dbg !20
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ret i32 %8, !dbg !21
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}
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1)
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!1 = !DIFile(filename: "foo.c", directory: "b/")
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!2 = !{}
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!3 = !{i32 2, !"Dwarf Version", i32 4}
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!5 = !{}
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!6 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 1, type: !7, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: false, unit: !0, variables: !2)
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!7 = !DISubroutineType(types: !8)
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!8 = !{!9, !9}
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!9 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!10 = !DILocalVariable(name: "x", arg: 1, scope: !6, file: !1, line: 1, type: !9)
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!11 = !DIExpression()
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!12 = !DILocation(line: 1, column: 13, scope: !6)
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!13 = !DILocalVariable(name: "ret", scope: !6, file: !1, line: 2, type: !9)
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!14 = !DILocation(line: 2, column: 7, scope: !6)
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!15 = !DILocation(line: 3, column: 7, scope: !16)
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!16 = distinct !DILexicalBlock(scope: !6, file: !1, line: 3, column: 7)
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!17 = !DILocation(line: 3, column: 7, scope: !6)
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!18 = !DILocation(line: 4, column: 9, scope: !16)
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!19 = !DILocation(line: 4, column: 5, scope: !16)
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!20 = !DILocation(line: 5, column: 10, scope: !6)
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!21 = !DILocation(line: 5, column: 3, scope: !6)
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