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      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 
      7 define void @foo(i32) nounwind ssp !dbg !0 {
      8 Entry:
      9   %1 = icmp slt i32 %0, 0, !dbg !5
     10   br i1 %1, label %BB5, label %BB1, !dbg !5
     11 
     12 BB1:                                              ; preds = %Entry
     13   %2 = icmp sgt i32 %0, 4, !dbg !5
     14   br i1 %2, label %BB5, label %BB2, !dbg !5
     15 
     16 BB2:                                              ; 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 
     26 BB3:                                              ; 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 
     32 BB4:                                              ; preds = %BB3
     33   %8 = icmp slt i32 %0, 0, !dbg !5
     34   ret void, !dbg !14
     35 
     36 BB5:                                              ; preds = %BB3, %BB2, %BB1, %Entry
     37   ret void, !dbg !14
     38 }
     39 
     40 declare 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