1; RUN: llc < %s | FileCheck %s
2; This is mainly a crasher for the revert in r234717.  A debug info intrinsic
3; that gets deleted can't have its bit piece expression verified after it's
4; deleted.
5
6target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
7target triple = "x86_64-apple-macosx10.8.0"
8
9; CHECK: __Z3foov:
10; CHECK: retq
11
12define void @_Z3foov() !dbg !12 {
13entry:
14  br i1 undef, label %exit, label %bb
15
16bb:                                               ; preds = %entry
17  call void @llvm.dbg.value(metadata i8* undef, i64 0, metadata !15, metadata !16), !dbg !17
18  br label %exit
19
20exit:                                             ; preds = %bb, %entry
21  ret void
22}
23
24declare void @llvm.dbg.value(metadata, i64, metadata, metadata)
25
26!llvm.module.flags = !{!0, !1}
27!llvm.dbg.cu = !{!2}
28
29!0 = !{i32 2, !"Dwarf Version", i32 2}
30!1 = !{i32 2, !"Debug Info Version", i32 3}
31!2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, isOptimized: true, runtimeVersion: 0, emissionKind: 1, enums: !4, retainedTypes: !5, subprograms: !11, globals: !4, imports: !4)
32!3 = !DIFile(filename: "foo.cpp", directory: "/path/to/dir")
33!4 = !{}
34!5 = !{!6}
35!6 = !DICompositeType(tag: DW_TAG_structure_type, name: "Class", size: 64, align: 64, elements: !7, identifier: "_ZT5Class")
36!7 = !{!8, !10}
37!8 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !"_ZT5Class", baseType: !9, size: 32, align: 32)
38!9 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
39!10 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !"_ZT5Class", baseType: !9, size: 32, align: 32)
40!11 = !{!12}
41!12 = distinct !DISubprogram(name: "foo", scope: null, file: !3, type: !13, isLocal: false, isDefinition: true, isOptimized: false)
42!13 = !DISubroutineType(types: !14)
43!14 = !{null}
44!15 = !DILocalVariable(name: "v", scope: !12, type: !"_ZT5Class")
45!16 = !DIExpression(DW_OP_bit_piece, 32, 32)
46!17 = !DILocation(line: 2755, column: 9, scope: !12)
47