1; RUN: opt -simplifycfg -S < %s | FileCheck %s
2
3%0 = type { i32*, i32* }
4
5@0 = external hidden constant [5 x %0], align 4
6
7define void @foo(i32) nounwind ssp !dbg !0 {
8Entry:
9  %1 = icmp slt i32 %0, 0, !dbg !5
10  br i1 %1, label %BB5, label %BB1, !dbg !5
11
12BB1:                                              ; preds = %Entry
13  %2 = icmp sgt i32 %0, 4, !dbg !5
14  br i1 %2, label %BB5, label %BB2, !dbg !5
15
16BB2:                                              ; preds = %BB1
17  %3 = shl i32 1, %0, !dbg !5
18  %4 = and i32 %3, 31, !dbg !5
19  %5 = icmp eq i32 %4, 0, !dbg !5
20  br i1 %5, label %BB5, label %BB3, !dbg !5
21
22;CHECK: icmp eq
23;CHECK-NEXT: getelementptr
24;CHECK-NEXT: icmp eq
25
26BB3:                                              ; preds = %BB2
27  %6 = getelementptr inbounds [5 x %0], [5 x %0]* @0, i32 0, i32 %0, !dbg !6
28  call void @llvm.dbg.value(metadata %0* %6, metadata !7, metadata !{}), !dbg !12
29  %7 = icmp eq %0* %6, null, !dbg !13
30  br i1 %7, label %BB5, label %BB4, !dbg !13
31
32BB4:                                              ; preds = %BB3
33  %8 = icmp slt i32 %0, 0, !dbg !5
34  ret void, !dbg !14
35
36BB5:                                              ; preds = %BB3, %BB2, %BB1, %Entry
37  ret void, !dbg !14
38}
39
40declare void @llvm.dbg.value(metadata, metadata, metadata) nounwind readnone
41
42!llvm.dbg.cu = !{!2}
43
44!0 = distinct !DISubprogram(name: "foo", line: 231, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !2, file: !15, scope: !1, type: !3)
45!1 = !DIFile(filename: "a.c", directory: "/private/tmp")
46!2 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang (trunk 129006)", isOptimized: true, emissionKind: FullDebug, file: !15, enums: !4, retainedTypes: !4)
47!3 = !DISubroutineType(types: !4)
48!4 = !{null}
49!5 = !DILocation(line: 131, column: 2, scope: !0)
50!6 = !DILocation(line: 134, column: 2, scope: !0)
51!7 = !DILocalVariable(name: "bar", line: 232, scope: !8, file: !1, type: !9)
52!8 = distinct !DILexicalBlock(line: 231, column: 1, file: !15, scope: !0)
53!9 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 32, align: 32, scope: !2, baseType: !10)
54!10 = !DIDerivedType(tag: DW_TAG_const_type, scope: !2, baseType: !11)
55!11 = !DIBasicType(tag: DW_TAG_base_type, name: "unsigned int", size: 32, align: 32, encoding: DW_ATE_unsigned)
56!12 = !DILocation(line: 232, column: 40, scope: !8)
57!13 = !DILocation(line: 234, column: 2, scope: !8)
58!14 = !DILocation(line: 274, column: 1, scope: !8)
59!15 = !DIFile(filename: "a.c", directory: "/private/tmp")
60