| ; 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 | |
| } |