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      1 ; RUN: llc < %s | FileCheck %s
      2 ;
      3 ; The test code is generated from the following source code:
      4 ; 
      5 ;  1 extern int bar(int x);
      6 ;  2
      7 ;  3 int foo(int *begin, int *end) {
      8 ;  4   int *i;
      9 ;  5   int ret = 0;
     10 ;  6   for (
     11 ;  7       i = begin ;
     12 ;  8       i != end ;
     13 ;  9       i++)
     14 ; 10   {
     15 ; 11       ret += bar(*i);
     16 ; 12   }
     17 ; 13   return ret;
     18 ; 14 }
     19 ; 
     20 ; CHECK: # %entry
     21 ; CHECK-NOT: # %for.body
     22 ; CHECK: .loc  1 6 3
     23 ; CHECK-NEXT: je  [[BB:.LBB[^ ]+]]
     24 ; CHECK: [[BB]]:
     25 ; CHECK: xorl %ebp, %ebp
     26 ; CHECK-NEXT: .LBB{{.*}} # %for.end
     27 
     28 target triple = "x86_64-unknown-linux-gnu"
     29 
     30 define i32 @foo(i32* readonly %begin, i32* readnone %end) !dbg !4 {
     31 entry:
     32   %cmp6 = icmp eq i32* %begin, %end, !dbg !9
     33   br i1 %cmp6, label %for.end, label %for.body.preheader, !dbg !12
     34 
     35 for.body.preheader:                               ; preds = %entry
     36   br label %for.body, !dbg !13
     37 
     38 for.body:                                         ; preds = %for.body.preheader, %for.body
     39   %ret.08 = phi i32 [ %add, %for.body ], [ 0, %for.body.preheader ]
     40   %i.07 = phi i32* [ %incdec.ptr, %for.body ], [ %begin, %for.body.preheader ]
     41   %0 = load i32, i32* %i.07, align 4, !dbg !13, !tbaa !15
     42   %call = tail call i32 @bar(i32 %0), !dbg !19
     43   %add = add nsw i32 %call, %ret.08, !dbg !20
     44   %incdec.ptr = getelementptr inbounds i32, i32* %i.07, i64 1, !dbg !21
     45   %cmp = icmp eq i32* %incdec.ptr, %end, !dbg !9
     46   br i1 %cmp, label %for.end.loopexit, label %for.body, !dbg !12, !llvm.loop !22
     47 
     48 for.end.loopexit:                                 ; preds = %for.body
     49   br label %for.end, !dbg !24
     50 
     51 for.end:                                          ; preds = %for.end.loopexit, %entry
     52   %ret.0.lcssa = phi i32 [ 0, %entry ], [ %add, %for.end.loopexit ]
     53   ret i32 %ret.0.lcssa, !dbg !24
     54 }
     55 
     56 declare i32 @bar(i32)
     57 
     58 !llvm.dbg.cu = !{!0}
     59 !llvm.module.flags = !{!2, !3}
     60 
     61 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, emissionKind: FullDebug)
     62 !1 = !DIFile(filename: "foo.c", directory: "b/")
     63 !2 = !{i32 2, !"Dwarf Version", i32 4}
     64 !3 = !{i32 2, !"Debug Info Version", i32 3}
     65 !4 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 3, type: !5, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: true, unit: !0)
     66 !5 = !DISubroutineType(types: !6)
     67 !6 = !{!7, !8, !8}
     68 !7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
     69 !8 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !7, size: 64)
     70 !9 = !DILocation(line: 8, column: 9, scope: !10)
     71 !10 = distinct !DILexicalBlock(scope: !11, file: !1, line: 6, column: 3)
     72 !11 = distinct !DILexicalBlock(scope: !4, file: !1, line: 6, column: 3)
     73 !12 = !DILocation(line: 6, column: 3, scope: !11)
     74 !13 = !DILocation(line: 11, column: 18, scope: !14)
     75 !14 = distinct !DILexicalBlock(scope: !10, file: !1, line: 10, column: 3)
     76 !15 = !{!16, !16, i64 0}
     77 !16 = !{!"int", !17, i64 0}
     78 !17 = !{!"omnipotent char", !18, i64 0}
     79 !18 = !{!"Simple C/C++ TBAA"}
     80 !19 = !DILocation(line: 11, column: 14, scope: !14)
     81 !20 = !DILocation(line: 11, column: 11, scope: !14)
     82 !21 = !DILocation(line: 9, column: 8, scope: !10)
     83 !22 = distinct !{!22, !12, !23}
     84 !23 = !DILocation(line: 12, column: 3, scope: !11)
     85 !24 = !DILocation(line: 13, column: 3, scope: !4)
     86