1; REQUIRES: asserts 2; RUN: opt -S -passes=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 3 4target datalayout = "e-m:e-p:32:32-f64:32:64-f80:32-n8:16:32-S128" 5 6; Ensure that we don't create interleave groups for predicated 7; strided accesses. 8 9; CHECK: LV: Checking a loop in 'masked_strided' 10; CHECK: LV: Analyzing interleaved accesses... 11; CHECK-NOT: LV: Creating an interleave group 12 13define dso_local void @masked_strided(ptr noalias nocapture readonly %p, ptr noalias nocapture %q, i8 zeroext %guard) local_unnamed_addr { 14entry: 15 %conv = zext i8 %guard to i32 16 br label %for.body 17 18for.body: 19 %ix.017 = phi i32 [ 0, %entry ], [ %inc, %for.inc ] 20 %cmp1 = icmp ugt i32 %ix.017, %conv 21 br i1 %cmp1, label %if.then, label %for.inc 22 23if.then: 24 %mul = shl nuw nsw i32 %ix.017, 1 25 %arrayidx = getelementptr inbounds i8, ptr %p, i32 %mul 26 %0 = load i8, ptr %arrayidx, align 1 27 %arrayidx4 = getelementptr inbounds i8, ptr %q, i32 %mul 28 store i8 %0, ptr %arrayidx4, align 1 29 %sub = sub i8 0, %0 30 %add = or disjoint i32 %mul, 1 31 %arrayidx8 = getelementptr inbounds i8, ptr %q, i32 %add 32 store i8 %sub, ptr %arrayidx8, align 1 33 br label %for.inc 34 35for.inc: 36 %inc = add nuw nsw i32 %ix.017, 1 37 %exitcond = icmp eq i32 %inc, 1024 38 br i1 %exitcond, label %for.end, label %for.body 39 40for.end: 41 ret void 42} 43