forked from OSchip/llvm-project
48 lines
1.9 KiB
LLVM
48 lines
1.9 KiB
LLVM
; Test that BDCE doesn't destroy llvm.dbg.value's argument.
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; RUN: opt -bdce %s -S | FileCheck %s
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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; CHECK: define void @f()
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; CHECK-NEXT: entry:
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; CHECK-NEXT: tail call void (...) @h()
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; CHECK-NEXT: %[[CALL:.*]] = tail call i32 (...) @g()
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; CHECK-NEXT: tail call void @llvm.dbg.value(metadata i32 %[[CALL:.*]]
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define void @f() !dbg !6 {
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entry:
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tail call void (...) @h(), !dbg !9
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%call = tail call i32 (...) @g(), !dbg !10
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tail call void @llvm.dbg.value(metadata i32 %call, metadata !11, metadata !13), !dbg !14
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%patatino = xor i32 %call, %call
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tail call void (...) @h(), !dbg !15
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ret void, !dbg !16
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}
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declare void @h(...)
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declare i32 @g(...)
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declare void @llvm.dbg.value(metadata, metadata, metadata)
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4}
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!llvm.ident = !{!5}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 4.0.0 (trunk 288665) (llvm/trunk 288725)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
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!1 = !DIFile(filename: "patatino.c", directory: "/home/davide/work/llvm/build-clang/bin")
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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 = !{!"clang version 4.0.0 (trunk 288665) (llvm/trunk 288725)"}
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!6 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 3, type: !7, isLocal: false, isDefinition: true, scopeLine: 3, isOptimized: false, unit: !0, retainedNodes: !2)
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!7 = !DISubroutineType(types: !8)
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!8 = !{null}
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!9 = !DILocation(line: 4, column: 3, scope: !6)
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!10 = !DILocation(line: 5, column: 11, scope: !6)
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!11 = !DILocalVariable(name: "a", scope: !6, file: !1, line: 5, type: !12)
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!12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!13 = !DIExpression()
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!14 = !DILocation(line: 5, column: 7, scope: !6)
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!15 = !DILocation(line: 6, column: 3, scope: !6)
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!16 = !DILocation(line: 7, column: 1, scope: !6)
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