1; RUN: llc -O0 < %s -o /dev/null
2; llc should not crash on this optimized out debug info.
3; PR6588
4declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone
5
6define void @foo() {
7entry:
8  call void @llvm.dbg.declare(metadata i32* undef, metadata !0, metadata !DIExpression()), !dbg !DILocation(scope: !1)
9  ret void
10}
11
12!llvm.dbg.cu = !{!3}
13!0 = !DILocalVariable(name: "sy", line: 890, arg: 1, scope: !1, file: !2, type: !7)
14!1 = distinct !DISubprogram(name: "foo", linkageName: "foo", line: 892, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, unit: !3, file: !8, scope: !3, type: !4)
15!2 = !DIFile(filename: "qpainter.h", directory: "QtGui")
16!3 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang 1.1", isOptimized: true, emissionKind: FullDebug, file: !9, enums: !10, retainedTypes: !10)
17!4 = !DISubroutineType(types: !6)
18!5 = !DIFile(filename: "splineeditor.cpp", directory: "src")
19!6 = !{null}
20!7 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
21!8 = !DIFile(filename: "qpainter.h", directory: "QtGui")
22!9 = !DIFile(filename: "splineeditor.cpp", directory: "src")
23!10 = !{i32 0}
24