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      1 ; RUN: opt < %s -simplifycfg -S | FileCheck %s
      2 
      3 ; Check that the debug location for the hoisted store for "ret = 0" is a
      4 ; line-0 location.
      5 ;
      6 ; int foo(int x) {
      7 ;   int ret = 1;
      8 ;   if (x)
      9 ;     ret = 0;
     10 ;   return ret;
     11 ; }
     12 ;
     13 ; CHECK: store i32 1,{{.+}}!dbg ![[DLOC1:[0-9]+]]
     14 ; CHECK: icmp ne {{.+}}!dbg ![[DLOC2:[0-9]+]]
     15 ; CHECK: [[VREG:%[^ ]+]] = select
     16 ; CHECK: store i32 [[VREG]],{{.*}} !dbg [[storeLoc:![0-9]+]]
     17 ; CHECK: ret {{.+}}!dbg ![[DLOC3:[0-9]+]]
     18 ; CHECK: ![[DLOC1]] = !DILocation(line: 2
     19 ; CHECK: ![[DLOC2]] = !DILocation(line: 3
     20 ; CHECK: [[storeLoc]] = !DILocation(line: 0
     21 ; CHECK: ![[DLOC3]] = !DILocation(line: 5
     22 
     23 target triple = "x86_64-unknown-linux-gnu"
     24 
     25 ; Function Attrs: noinline nounwind uwtable
     26 define i32 @foo(i32) !dbg !6 {
     27   %2 = alloca i32, align 4
     28   %3 = alloca i32, align 4
     29   store i32 %0, i32* %2, align 4
     30   store i32 1, i32* %3, align 4, !dbg !14
     31   %4 = load i32, i32* %2, align 4, !dbg !15
     32   %5 = icmp ne i32 %4, 0, !dbg !15
     33   br i1 %5, label %6, label %7, !dbg !17
     34 
     35 ; <label>:6:                                      ; preds = %1
     36   store i32 0, i32* %3, align 4, !dbg !18
     37   br label %7, !dbg !19
     38 
     39 ; <label>:7:                                      ; preds = %6, %1
     40   %8 = load i32, i32* %3, align 4, !dbg !20
     41   ret i32 %8, !dbg !21
     42 }
     43 
     44 !llvm.dbg.cu = !{!0}
     45 !llvm.module.flags = !{!3, !4}
     46 
     47 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1)
     48 !1 = !DIFile(filename: "foo.c", directory: "b/")
     49 !2 = !{}
     50 !3 = !{i32 2, !"Dwarf Version", i32 4}
     51 !4 = !{i32 2, !"Debug Info Version", i32 3}
     52 !5 = !{}
     53 !6 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 1, type: !7, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)
     54 !7 = !DISubroutineType(types: !8)
     55 !8 = !{!9, !9}
     56 !9 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
     57 !10 = !DILocalVariable(name: "x", arg: 1, scope: !6, file: !1, line: 1, type: !9)
     58 !11 = !DIExpression()
     59 !12 = !DILocation(line: 1, column: 13, scope: !6)
     60 !13 = !DILocalVariable(name: "ret", scope: !6, file: !1, line: 2, type: !9)
     61 !14 = !DILocation(line: 2, column: 7, scope: !6)
     62 !15 = !DILocation(line: 3, column: 7, scope: !16)
     63 !16 = distinct !DILexicalBlock(scope: !6, file: !1, line: 3, column: 7)
     64 !17 = !DILocation(line: 3, column: 7, scope: !6)
     65 !18 = !DILocation(line: 4, column: 9, scope: !16)
     66 !19 = !DILocation(line: 4, column: 5, scope: !16)
     67 !20 = !DILocation(line: 5, column: 10, scope: !6)
     68 !21 = !DILocation(line: 5, column: 3, scope: !6)
     69