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      1 ; RUN: opt -instcombine -S < %s | FileCheck %s
      2 ;
      3 ; Generated with:
      4 ;
      5 ; clang -S -gmlt -emit-llvm test.c -o 1.ll
      6 ; opt -sroa -S 1.ll -o test.ll
      7 ;
      8 ; extern int bar(int i);
      9 ; extern int bar2(int i);
     10 ;
     11 ; int foo(int a, int *d) {
     12 ;   if(a) {
     13 ;       *d = bar(a);
     14 ;   } else {
     15 ;       *d = bar2(a);
     16 ;   }
     17 ;
     18 ;   return a;
     19 ; }
     20 ;
     21 ; CHECK:       define {{.*}}@foo
     22 ; CHECK:       if.end:
     23 ; CHECK-NEXT:  %storemerge = phi
     24 ;
     25 ; The debug location on the store should be a line-0 location.
     26 ; CHECK-NEXT:  store i32 %storemerge{{.*}}, align 4, !dbg [[storeLoc:![0-9]+]]
     27 ; CHECK: [[storeLoc]] = !DILocation(line: 0
     28 ;
     29 ; ModuleID = 'test1.ll'
     30 source_filename = "test.c"
     31 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
     32 target triple = "x86_64-unknown-linux-gnu"
     33 
     34 ; Function Attrs: noinline nounwind uwtable
     35 define i32 @foo(i32 %a, i32* %d) !dbg !6 {
     36 entry:
     37   %tobool = icmp ne i32 %a, 0, !dbg !8
     38   br i1 %tobool, label %if.then, label %if.else, !dbg !8
     39 
     40 if.then:                                          ; preds = %entry
     41   %call = call i32 @bar(i32 %a), !dbg !9
     42   store i32 %call, i32* %d, align 4, !dbg !10
     43   br label %if.end, !dbg !11
     44 
     45 if.else:                                          ; preds = %entry
     46   %call1 = call i32 @bar2(i32 %a), !dbg !12
     47   store i32 %call1, i32* %d, align 4, !dbg !13
     48   br label %if.end
     49 
     50 if.end:                                           ; preds = %if.else, %if.then
     51   ret i32 %a, !dbg !14
     52 }
     53 
     54 declare i32 @bar(i32)
     55 
     56 declare i32 @bar2(i32)
     57 
     58 !llvm.dbg.cu = !{!0}
     59 !llvm.module.flags = !{!3, !4}
     60 
     61 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "", isOptimized: false, runtimeVersion: 0, emissionKind: LineTablesOnly, enums: !2)
     62 !1 = !DIFile(filename: "test.c", directory: "/home/probinson/projects/scratch")
     63 !2 = !{}
     64 !3 = !{i32 2, !"Dwarf Version", i32 4}
     65 !4 = !{i32 2, !"Debug Info Version", i32 3}
     66 !6 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 4, type: !7, isLocal: false, isDefinition: true, scopeLine: 4, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)
     67 !7 = !DISubroutineType(types: !2)
     68 !8 = !DILocation(line: 5, column: 6, scope: !6)
     69 !9 = !DILocation(line: 6, column: 12, scope: !6)
     70 !10 = !DILocation(line: 6, column: 10, scope: !6)
     71 !11 = !DILocation(line: 7, column: 3, scope: !6)
     72 !12 = !DILocation(line: 8, column: 12, scope: !6)
     73 !13 = !DILocation(line: 8, column: 10, scope: !6)
     74 !14 = !DILocation(line: 10, column: 3, scope: !6)
     75