1; RUN: opt < %s  -loop-vectorize -force-vector-width=4 -force-vector-interleave=1 -instcombine -S | FileCheck %s
2
3target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
4target triple = "arm64-apple-ios5.0.0"
5
6; CHECK-LABEL: @foo(
7define void @foo(float* noalias %a, float* noalias %b, float* noalias %c, i32 %N) {
8entry:
9  %cmp.4 = icmp sgt i32 %N, 0
10  br i1 %cmp.4, label %for.body.preheader, label %for.end
11
12for.body.preheader:                               ; preds = %entry
13  br label %for.body
14
15for.body:                                         ; preds = %for.body.preheader, %for.body
16  %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %for.body.preheader ]
17
18; Check that we don't lose !nontemporal hint when vectorizing loads.
19; CHECK: %wide.load{{[0-9]*}} = load <4 x float>, <4 x float>* %{{[0-9]+}}, align 4, !nontemporal !0
20  %arrayidx = getelementptr inbounds float, float* %b, i64 %indvars.iv
21  %0 = load float, float* %arrayidx, align 4, !nontemporal !0
22
23; Check that we don't introduce !nontemporal hint when the original scalar loads didn't have it.
24; CHECK: %wide.load{{[0-9]+}} = load <4 x float>, <4 x float>* %{{[0-9]+}}, align 4{{$}}
25  %arrayidx2 = getelementptr inbounds float, float* %c, i64 %indvars.iv
26  %1 = load float, float* %arrayidx2, align 4
27  %add = fadd float %0, %1
28
29; Check that we don't lose !nontemporal hint when vectorizing stores.
30; CHECK: store <4 x float> %{{[0-9]+}}, <4 x float>* %{{[0-9]+}}, align 4, !nontemporal !0
31  %arrayidx4 = getelementptr inbounds float, float* %a, i64 %indvars.iv
32  store float %add, float* %arrayidx4, align 4, !nontemporal !0
33
34  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
35  %lftr.wideiv = trunc i64 %indvars.iv.next to i32
36  %exitcond = icmp eq i32 %lftr.wideiv, %N
37  br i1 %exitcond, label %for.end.loopexit, label %for.body
38
39for.end.loopexit:                                 ; preds = %for.body
40  br label %for.end
41
42for.end:                                          ; preds = %for.end.loopexit, %entry
43; CHECK: ret void
44  ret void
45}
46
47!0 = !{i32 1}
48