1; RUN: opt < %s -loop-vectorize -S -pass-remarks-missed='loop-vectorize' -pass-remarks-analysis='loop-vectorize' 2>&1 | FileCheck %s
2
3; CHECK: remark: source.c:2:8: loop not vectorized: store that is conditionally executed prevents vectorization
4
5target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
6target triple = "x86_64-apple-macosx10.9.0"
7
8; Function Attrs: nounwind ssp uwtable
9define void @conditional_store(i32* noalias nocapture %indices) #0 {
10entry:
11  br label %for.body, !dbg !10
12
13for.body:                                         ; preds = %for.inc, %entry
14  %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.inc ]
15  %arrayidx = getelementptr inbounds i32* %indices, i64 %indvars.iv, !dbg !12
16  %0 = load i32* %arrayidx, align 4, !dbg !12, !tbaa !14
17  %cmp1 = icmp eq i32 %0, 1024, !dbg !12
18  br i1 %cmp1, label %if.then, label %for.inc, !dbg !12
19
20if.then:                                          ; preds = %for.body
21  store i32 0, i32* %arrayidx, align 4, !dbg !18, !tbaa !14
22  br label %for.inc, !dbg !18
23
24for.inc:                                          ; preds = %for.body, %if.then
25  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !10
26  %exitcond = icmp eq i64 %indvars.iv.next, 4096, !dbg !10
27  br i1 %exitcond, label %for.end, label %for.body, !dbg !10
28
29for.end:                                          ; preds = %for.inc
30  ret void, !dbg !19
31}
32
33attributes #0 = { nounwind }
34
35!llvm.dbg.cu = !{!0}
36!llvm.module.flags = !{!7, !8}
37!llvm.ident = !{!9}
38
39!0 = metadata !{i32 786449, metadata !1, i32 12, metadata !"clang version 3.6.0", i1 true, metadata !"", i32 0, metadata !2, metadata !2, metadata !3, metadata !2, metadata !2, metadata !"", i32 2}
40!1 = metadata !{metadata !"source.c", metadata !"."}
41!2 = metadata !{}
42!3 = metadata !{metadata !4}
43!4 = metadata !{i32 786478, metadata !1, metadata !5, metadata !"conditional_store", metadata !"conditional_store", metadata !"", i32 1, metadata !6, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 true, void (i32*)* @conditional_store, null, null, metadata !2, i32 1}
44!5 = metadata !{i32 786473, metadata !1}
45!6 = metadata !{i32 786453, i32 0, null, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !2, i32 0, null, null, null}
46!7 = metadata !{i32 2, metadata !"Dwarf Version", i32 2}
47!8 = metadata !{i32 2, metadata !"Debug Info Version", i32 1}
48!9 = metadata !{metadata !"clang version 3.6.0"}
49!10 = metadata !{i32 2, i32 8, metadata !11, null}
50!11 = metadata !{i32 786443, metadata !1, metadata !4, i32 2, i32 3, i32 0, i32 0}
51!12 = metadata !{i32 3, i32 9, metadata !13, null}
52!13 = metadata !{i32 786443, metadata !1, metadata !11, i32 3, i32 9, i32 0, i32 1}
53!14 = metadata !{metadata !15, metadata !15, i64 0}
54!15 = metadata !{metadata !"int", metadata !16, i64 0}
55!16 = metadata !{metadata !"omnipotent char", metadata !17, i64 0}
56!17 = metadata !{metadata !"Simple C/C++ TBAA"}
57!18 = metadata !{i32 3, i32 29, metadata !13, null}
58!19 = metadata !{i32 4, i32 1, metadata !4, null}
59