1; RUN: opt < %s  -loop-vectorize -force-vector-unroll=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 sgt i64 %size, 0
17  br i1 %cmp1, label %for.header, label %for.end
18
19for.header:
20  %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
21  %cmp2 = icmp sgt i64 %indvars.iv, %size
22  br i1 %cmp2, label %for.end, label %for.body
23
24for.body:
25
26  %arrayidx = getelementptr inbounds float* %a, i64 %indvars.iv
27  %0 = load float* %arrayidx, align 4
28  %mul = fmul float %0, %0
29  store float %mul, float* %arrayidx, align 4
30
31  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
32  br label %for.header
33
34for.end:
35  ret void
36}
37
38define void @not_vectorized(float* nocapture %a, i64 %size) {
39entry:
40  %cmp1 = icmp sgt i64 %size, 0
41  br i1 %cmp1, label %for.header, label %for.end
42
43for.header:
44  %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
45  %cmp2 = icmp sgt i64 %indvars.iv, %size
46  br i1 %cmp2, label %for.end, label %for.body
47
48for.body:
49
50  %0 = add nsw i64 %indvars.iv, -5
51  %arrayidx = getelementptr inbounds float* %a, i64 %0
52  %1 = load float* %arrayidx, align 4
53  %2 = add nsw i64 %indvars.iv, 2
54  %arrayidx2 = getelementptr inbounds float* %a, i64 %2
55  %3 = load float* %arrayidx2, align 4
56  %mul = fmul float %1, %3
57  %arrayidx4 = getelementptr inbounds float* %a, i64 %indvars.iv
58  store float %mul, float* %arrayidx4, align 4
59
60  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
61  br label %for.header
62
63for.end:
64  ret void
65}
66
67