1 ; RUN: opt < %s -loop-vectorize -force-vector-unroll=4 -force-vector-width=4 -debug-only=loop-vectorize -stats -S 2>&1 | FileCheck %s
5 ; We have 2 loops, one of them is vectorizable and the second one is not.
8 ; CHECK: 2 loop-vectorize - Number of loops analyzed for vectorization
9 ; CHECK: 1 loop-vectorize - Number of loops vectorized
11 target 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"
12 target triple = "x86_64-unknown-linux-gnu"
14 define void @vectorized(float* nocapture %a, i64 %size) {
16 %cmp1 = icmp sgt i64 %size, 0
17 br i1 %cmp1, label %for.header, label %for.end
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
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
31 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
38 define void @not_vectorized(float* nocapture %a, i64 %size) {
40 %cmp1 = icmp sgt i64 %size, 0
41 br i1 %cmp1, label %for.header, label %for.end
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
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
60 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1