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
28target triple = "x86_64-unknown-linux-gnu"
29
30define i32 @foo(i32* readonly %begin, i32* readnone %end) !dbg !4 {
31entry:
32  %cmp6 = icmp eq i32* %begin, %end, !dbg !9
33  br i1 %cmp6, label %for.end, label %for.body.preheader, !dbg !12
34
35for.body.preheader:                               ; preds = %entry
36  br label %for.body, !dbg !13
37
38for.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
48for.end.loopexit:                                 ; preds = %for.body
49  br label %for.end, !dbg !24
50
51for.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
56declare 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