; The module ctor has no debug info. All we have to do is don't crash.
; X86: _asan.module_ctor:
+; X86-NEXT: L{{.*}}:
; X86-NEXT: # BB
; X86-NEXT: calll ___asan_init_v3
; X86-NEXT: retl
+; Make sure we don't put any DWARF debug info for ASan-instrumented modules.
+; X86-NOT: DWARF
+
; ModuleID = 'asan.c'
target datalayout = "e-m:w-p:32:32-i64:64-f80:32-n8:16:32-S32"
target triple = "i686-pc-win32"
!llvm.module.flags = !{!7, !8}
!llvm.ident = !{!9}
-!0 = metadata !{metadata !"0x11\0012\00clang version 3.5.0 \000\00\000\00\002", metadata !1, metadata !2, metadata !2, metadata !3, metadata !2, metadata !2} ; [ DW_TAG_compile_unit ] [D:\/asan.c] [DW_LANG_C99]
-!1 = metadata !{metadata !"asan.c", metadata !"D:\5C"}
-!2 = metadata !{}
-!3 = metadata !{metadata !4}
-!4 = metadata !{metadata !"0x2e\00foo\00foo\00\001\000\001\000\006\00256\000\001", metadata !1, metadata !5, metadata !6, null, i32 ()* @foo, null, null, metadata !2} ; [ DW_TAG_subprogram ] [line 1] [def] [foo]
-!5 = metadata !{metadata !"0x29", metadata !1} ; [ DW_TAG_file_type ] [D:\/asan.c]
-!6 = metadata !{metadata !"0x15\00\000\000\000\000\000\000", i32 0, null, null, metadata !2, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
-!7 = metadata !{i32 2, metadata !"Dwarf Version", i32 4}
-!8 = metadata !{i32 1, metadata !"Debug Info Version", i32 2}
-!9 = metadata !{metadata !"clang version 3.5.0 "}
-!10 = metadata !{i32 2, i32 0, metadata !4, null}
+!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: 2, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+!1 = !DIFile(filename: "asan.c", directory: "D:\5C")
+!2 = !{}
+!3 = !{!4}
+!4 = !DISubprogram(name: "foo", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 1, file: !1, scope: !5, type: !6, function: i32 ()* @foo, variables: !2)
+!5 = !DIFile(filename: "asan.c", directory: "D:C")
+!6 = !DISubroutineType(types: !2)
+!7 = !{i32 2, !"Dwarf Version", i32 4}
+!8 = !{i32 1, !"Debug Info Version", i32 3}
+!9 = !{!"clang version 3.5.0 "}
+!10 = !DILocation(line: 2, scope: !4)