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
|
; REQUIRES: asserts
; RUN: opt -S -loop-vectorize -force-vector-width=8 -force-vector-interleave=1 -enable-interleaved-mem-accesses -debug-only=loop-vectorize,vectorutils -disable-output < %s 2>&1 | FileCheck %s
target datalayout = "e-m:e-p:32:32-f64:32:64-f80:32-n8:16:32-S128"
; Ensure that we don't create interleave groups for predicated
; strided accesses.
; CHECK: LV: Checking a loop in "masked_strided"
; CHECK: LV: Analyzing interleaved accesses...
; CHECK-NOT: LV: Creating an interleave group
define dso_local void @masked_strided(i8* noalias nocapture readonly %p, i8* noalias nocapture %q, i8 zeroext %guard) local_unnamed_addr {
entry:
%conv = zext i8 %guard to i32
br label %for.body
for.body:
%ix.017 = phi i32 [ 0, %entry ], [ %inc, %for.inc ]
%cmp1 = icmp ugt i32 %ix.017, %conv
br i1 %cmp1, label %if.then, label %for.inc
if.then:
%mul = shl nuw nsw i32 %ix.017, 1
%arrayidx = getelementptr inbounds i8, i8* %p, i32 %mul
%0 = load i8, i8* %arrayidx, align 1
%arrayidx4 = getelementptr inbounds i8, i8* %q, i32 %mul
store i8 %0, i8* %arrayidx4, align 1
%sub = sub i8 0, %0
%add = or i32 %mul, 1
%arrayidx8 = getelementptr inbounds i8, i8* %q, i32 %add
store i8 %sub, i8* %arrayidx8, align 1
br label %for.inc
for.inc:
%inc = add nuw nsw i32 %ix.017, 1
%exitcond = icmp eq i32 %inc, 1024
br i1 %exitcond, label %for.end, label %for.body
for.end:
ret void
}
|
