1 files changed, 46 insertions, 0 deletions
diff --git a/test/DebugInfo/X86/deleted-bit-piece.ll b/test/DebugInfo/X86/deleted-bit-piece.ll
new file mode 100644
index 0000000..b8ae9b1
--- /dev/null
+++ b/test/DebugInfo/X86/deleted-bit-piece.ll
@@ -0,0 +1,46 @@
+; RUN: llc < %s | FileCheck %s
+; This is mainly a crasher for the revert in r234717.  A debug info intrinsic
+; that gets deleted can't have its bit piece expression verified after it's
+; deleted.
+
+target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-apple-macosx10.8.0"
+
+; CHECK: __Z3foov:
+; CHECK: retq
+
+define void @_Z3foov() {
+entry:
+  br i1 undef, label %exit, label %bb
+
+bb:                                               ; preds = %entry
+  call void @llvm.dbg.value(metadata i8* undef, i64 0, metadata !15, metadata !16), !dbg !17
+  br label %exit
+
+exit:                                             ; preds = %bb, %entry
+  ret void
+}
+
+declare void @llvm.dbg.value(metadata, i64, metadata, metadata)
+
+!llvm.module.flags = !{!0, !1}
+!llvm.dbg.cu = !{!2}
+
+!0 = !{i32 2, !"Dwarf Version", i32 2}
+!1 = !{i32 2, !"Debug Info Version", i32 3}
+!2 = !MDCompileUnit(language: DW_LANG_C_plus_plus, file: !3, isOptimized: true, runtimeVersion: 0, emissionKind: 1, enums: !4, retainedTypes: !5, subprograms: !11, globals: !4, imports: !4)
+!3 = !MDFile(filename: "foo.cpp", directory: "/path/to/dir")
+!4 = !{}
+!5 = !{!6}
+!6 = !MDCompositeType(tag: DW_TAG_structure_type, name: "Class", size: 64, align: 64, elements: !7, identifier: "_ZT5Class")
+!7 = !{!8, !10}
+!8 = !MDDerivedType(tag: DW_TAG_member, name: "a", scope: !"_ZT5Class", baseType: !9, size: 32, align: 32)
+!9 = !MDBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
+!10 = !MDDerivedType(tag: DW_TAG_member, name: "b", scope: !"_ZT5Class", baseType: !9, size: 32, align: 32)
+!11 = !{!12}
+!12 = !MDSubprogram(name: "foo", scope: null, file: !3, type: !13, isLocal: false, isDefinition: true, isOptimized: false, function: void ()* @_Z3foov)
+!13 = !MDSubroutineType(types: !14)
+!14 = !{null}
+!15 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "v", scope: !12, type: !"_ZT5Class")
+!16 = !MDExpression(DW_OP_bit_piece, 32, 32)
+!17 = !MDLocation(line: 2755, column: 9, scope: !12)