1; RUN: opt < %s  -loop-vectorize -force-vector-interleave=4 -force-vector-width=4 -debug-only=loop-vectorize -stats -S 2>&1 | FileCheck %s
2; REQUIRES: asserts
3
4;
5; We have 2 loops, one of them is vectorizable and the second one is not.
6;
7
8; CHECK: 2 loop-vectorize               - Number of loops analyzed for vectorization
9; CHECK: 1 loop-vectorize               - Number of loops vectorized
10
11target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
12target triple = "x86_64-unknown-linux-gnu"
13
14define void @vectorized(float* nocapture %a, i64 %size) {
15entry:
16  %cmp1 = icmp sle i64 %size, 0
17  %cmp21 = icmp sgt i64 0, %size
18  %or.cond = or i1 %cmp1, %cmp21
19  br i1 %or.cond, label %for.end, label %for.body
20
21for.body:                                         ; preds = %entry, %for.body
22  %indvars.iv2 = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
23  %arrayidx = getelementptr inbounds float, float* %a, i64 %indvars.iv2
24  %0 = load float, float* %arrayidx, align 4
25  %mul = fmul float %0, %0
26  store float %mul, float* %arrayidx, align 4
27  %indvars.iv.next = add nuw nsw i64 %indvars.iv2, 1
28  %cmp2 = icmp sgt i64 %indvars.iv.next, %size
29  br i1 %cmp2, label %for.end, label %for.body
30
31for.end:                                          ; preds = %entry, %for.body
32  ret void
33}
34
35define void @not_vectorized(float* nocapture %a, i64 %size) {
36entry:
37  %cmp1 = icmp sle i64 %size, 0
38  %cmp21 = icmp sgt i64 0, %size
39  %or.cond = or i1 %cmp1, %cmp21
40  br i1 %or.cond, label %for.end, label %for.body
41
42for.body:                                         ; preds = %entry, %for.body
43  %indvars.iv2 = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
44  %0 = add nsw i64 %indvars.iv2, -5
45  %arrayidx = getelementptr inbounds float, float* %a, i64 %0
46  %1 = load float, float* %arrayidx, align 4
47  %2 = add nsw i64 %indvars.iv2, 2
48  %arrayidx2 = getelementptr inbounds float, float* %a, i64 %2
49  %3 = load float, float* %arrayidx2, align 4
50  %mul = fmul float %1, %3
51  %arrayidx4 = getelementptr inbounds float, float* %a, i64 %indvars.iv2
52  store float %mul, float* %arrayidx4, align 4
53  %indvars.iv.next = add nuw nsw i64 %indvars.iv2, 1
54  %cmp2 = icmp sgt i64 %indvars.iv.next, %size
55  br i1 %cmp2, label %for.end, label %for.body
56
57for.end:                                          ; preds = %entry, %for.body
58  ret void
59}
60