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      1 ; RUN: opt -S -simplifycfg -strip-debug < %s | FileCheck %s
      2 ; RUN: opt -S -simplifycfg < %s | FileCheck %s
      3 
      4 ; Test case for BUG-27615
      5 ; Test that simplify cond branch produce same result for debug and non-debug builds
      6 ; CHECK: select i1 %or.cond, i32 -1, i32 5
      7 ; CHECK-NOT: bb1:
      8 
      9 ; ModuleID = './csmith107.i.debug.ll'
     10 source_filename = "./csmith107.i.debug.ll"
     11 
     12 @a = global i16 0
     13 @b = global i32 0
     14 @c = global i16* null
     15 
     16 
     17 ; Function Attrs: nounwind
     18 define i16 @fn1() #3 !dbg !15 {
     19 bb2:
     20   store i32 -1, i32* @b, align 1
     21   %_tmp1.pre = load i16, i16* @a, align 1, !dbg !19
     22   %_tmp2.pre = load i16*, i16** @c, align 1
     23   tail call void @llvm.dbg.value(metadata i16 6, i64 0, metadata !22, metadata !23), !dbg !24
     24   tail call void @llvm.dbg.value(metadata i16 %_tmp1.pre, i64 0, metadata !25, metadata !23), !dbg !19
     25   %_tmp3 = load i16, i16* %_tmp2.pre, align 1
     26   %_tmp4 = icmp ne i16 %_tmp3, 0
     27   %_tmp6 = icmp ne i16 %_tmp1.pre, 0
     28   %or.cond = and i1 %_tmp6, %_tmp4
     29   br i1 %or.cond, label %bb5, label %bb1
     30 
     31 bb1:                                              ; preds = %bb2
     32   store i32 5, i32* @b, align 1
     33   br label %bb5
     34 
     35 bb5:                                              ; preds = %bb1, %bb2
     36   ret i16 0
     37 }
     38 
     39 ; Function Attrs: nounwind readnone
     40 declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #4
     41 
     42 !llvm.dbg.cu = !{!0}
     43 !llvm.module.flags = !{!12, !13}
     44 
     45 !0 = distinct !DICompileUnit(language: DW_LANG_C, file: !1, producer: "FlexC Compiler v6.36 (LLVM)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !2, globals: !3)
     46 !1 = !DIFile(filename: "csmith107.i.c", directory: "/tmp")
     47 !2 = !{}
     48 !3 = !{!4, !6, !10}
     49 !4 = !DIGlobalVariable(name: "a", scope: null, file: !1, line: 2, type: !5, isLocal: false, isDefinition: true, variable: i16* @a)
     50 !5 = !DIBasicType(name: "int", size: 16, align: 16, encoding: DW_ATE_signed)
     51 !6 = !DIGlobalVariable(name: "b", scope: null, file: !1, line: 3, type: !7, isLocal: false, isDefinition: true, variable: i32* @b)
     52 !7 = !DIDerivedType(tag: DW_TAG_typedef, name: "uint32_t", file: !1, line: 1, baseType: !8)
     53 !8 = !DIDerivedType(tag: DW_TAG_typedef, name: "__u32_t", file: !1, baseType: !9)
     54 !9 = !DIBasicType(name: "unsigned long", size: 32, align: 16, encoding: DW_ATE_unsigned)
     55 !10 = !DIGlobalVariable(name: "c", scope: null, file: !1, line: 4, type: !11, isLocal: false, isDefinition: true, variable: i16** @c)
     56 !11 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !5, size: 16, align: 16)
     57 !12 = !{i32 2, !"Dwarf Version", i32 4}
     58 !13 = !{i32 2, !"Debug Info Version", i32 3}
     59 !15 = distinct !DISubprogram(name: "fn1", scope: !1, file: !1, line: 5, type: !16, isLocal: false, isDefinition: true, scopeLine: 5, isOptimized: false, unit: !0, variables: !2)
     60 !16 = !DISubroutineType(types: !17)
     61 !17 = !{!5}
     62 !19 = !DILocation(line: 8, column: 16, scope: !20)
     63 !20 = !DILexicalBlock(scope: !15, file: !1, line: 7, column: 29)
     64 !22 = !DILocalVariable(name: "d", scope: !20, line: 8, type: !5)
     65 !23 = !DIExpression()
     66 !24 = !DILocation(line: 8, column: 9, scope: !20)
     67 !25 = !DILocalVariable(name: "e", scope: !20, line: 8, type: !5)
     68 
     69