1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
|
; RUN: opt -loop-vectorize -dce -instcombine -S -force-vector-width=4 < %s 2>%t | FileCheck %s
define void @inv_store_last_lane(i32* noalias nocapture %a, i32* noalias nocapture %inv, i32* noalias nocapture readonly %b, i64 %n) {
; CHECK-LABEL: @inv_store_last_lane
; CHECK: vector.body:
; CHECK: store <4 x i32> %[[VEC_VAL:.*]], <
; CHECK: middle.block:
; CHECK: %{{.*}} = extractelement <4 x i32> %[[VEC_VAL]], i32 3
entry:
br label %for.body
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
%arrayidx = getelementptr inbounds i32, i32* %b, i64 %indvars.iv
%0 = load i32, i32* %arrayidx, align 4
%mul = shl nsw i32 %0, 1
%arrayidx2 = getelementptr inbounds i32, i32* %a, i64 %indvars.iv
store i32 %mul, i32* %arrayidx2, align 4
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%exitcond.not = icmp eq i64 %indvars.iv.next, %n
br i1 %exitcond.not, label %exit, label %for.body
exit: ; preds = %for.body
%arrayidx5 = getelementptr inbounds i32, i32* %inv, i64 42
store i32 %mul, i32* %arrayidx5, align 4
ret void
}
define float @ret_last_lane(float* noalias nocapture %a, float* noalias nocapture readonly %b, i64 %n) {
; CHECK-LABEL: @ret_last_lane
; CHECK: vector.body:
; CHECK: store <4 x float> %[[VEC_VAL:.*]], <
; CHECK: middle.block:
; CHECK: %{{.*}} = extractelement <4 x float> %[[VEC_VAL]], i32 3
entry:
br label %for.body
for.body: ; preds = %for.body.preheader, %for.body
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
%arrayidx = getelementptr inbounds float, float* %b, i64 %indvars.iv
%0 = load float, float* %arrayidx, align 4
%mul = fmul float %0, 2.000000e+00
%arrayidx2 = getelementptr inbounds float, float* %a, i64 %indvars.iv
store float %mul, float* %arrayidx2, align 4
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%exitcond.not = icmp eq i64 %indvars.iv.next, %n
br i1 %exitcond.not, label %exit, label %for.body
exit: ; preds = %for.body, %entry
ret float %mul
}
|
