1;RUN: opt < %s -loop-vectorize -force-vector-width=4 -force-vector-interleave=1 -instcombine -S | FileCheck %s
2
3target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
4
5;; Check consecutive memory access without preceding GEP instruction
6
7;  for (int i=0; i<len; i++) {
8;    *to++ = *from++;
9;  }
10
11; CHECK-LABEL: @consecutive_no_gep(
12; CHECK: vector.body
13; CHECK: %[[index:.*]] = phi i64 [ 0, %vector.ph ]
14; CHECK: getelementptr float, float* %{{.*}}, i64 %[[index]]
15; CHECK: load <4 x float>
16
17define void @consecutive_no_gep(float* noalias nocapture readonly %from, float* noalias nocapture %to, i32 %len) #0 {
18entry:
19  %cmp2 = icmp sgt i32 %len, 0
20  br i1 %cmp2, label %for.body.preheader, label %for.end
21
22for.body.preheader:                               ; preds = %entry
23  br label %for.body
24
25for.body:                                         ; preds = %for.body.preheader, %for.body
26  %i.05 = phi i32 [ %inc, %for.body ], [ 0, %for.body.preheader ]
27  %from.addr.04 = phi float* [ %incdec.ptr, %for.body ], [ %from, %for.body.preheader ]
28  %to.addr.03 = phi float* [ %incdec.ptr1, %for.body ], [ %to, %for.body.preheader ]
29  %incdec.ptr = getelementptr inbounds float, float* %from.addr.04, i64 1
30  %val = load float, float* %from.addr.04, align 4
31  %incdec.ptr1 = getelementptr inbounds float, float* %to.addr.03, i64 1
32  store float %val, float* %to.addr.03, align 4
33  %inc = add nsw i32 %i.05, 1
34  %cmp = icmp slt i32 %inc, %len
35  br i1 %cmp, label %for.body, label %for.end.loopexit
36
37for.end.loopexit:                                 ; preds = %for.body
38  br label %for.end
39
40for.end:                                          ; preds = %for.end.loopexit, %entry
41  ret void
42}
43