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1; RUN: opt -mcpu=skx -S -passes=loop-vectorize -force-vector-width=8 -force-vector-interleave=1 -enable-interleaved-mem-accesses < %s | FileCheck %s2 3target datalayout = "e-m:e-p:32:32-f64:32:64-f80:32-n8:16:32-S128"4 5; This test checks the fix for PR39099.6;7; Check that the predicated load is not vectorized as an8; interleaved-group (which requires proper masking, currently unsupported)9; but rather as a scalarized accesses.10; (For SKX, Gather is not supported by the compiler for chars, therefore11; the only remaining alternative is to scalarize).12;13; void masked_strided(const unsigned char* restrict p,14; unsigned char* restrict q,15; unsigned char guard) {16; for(ix=0; ix < 1024; ++ix) {17; if (ix > guard) {18; char t = p[2*ix];19; q[ix] = t;20; }21; }22; }23 24;CHECK-LABEL: @masked_strided(25;CHECK: vector.body:26;CHECK-NEXT: %index = phi i3227;CHECK-NEXT: %[[VECIND:.+]] = phi <8 x i32> [ <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7>28;CHECK-NEXT: %[[VMASK:.+]] = icmp ugt <8 x i32> %[[VECIND]], %{{broadcast.splat*}}29;CHECK-NEXT: %{{.*}} = shl nuw nsw <8 x i32> %[[VECIND]], splat (i32 1)30;CHECK-NEXT: %[[M:.+]] = extractelement <8 x i1> %[[VMASK]], i32 031;CHECK-NEXT: br i1 %[[M]], label %pred.store.if, label %pred.store.continue32;CHECK-NOT: %{{.+}} = load <16 x i8>, ptr %{{.*}}, align 133 34define dso_local void @masked_strided(ptr noalias nocapture readonly %p, ptr noalias nocapture %q, i8 zeroext %guard) local_unnamed_addr {35entry:36 %conv = zext i8 %guard to i3237 br label %for.body38 39for.body:40 %ix.09 = phi i32 [ 0, %entry ], [ %inc, %for.inc ]41 %cmp1 = icmp ugt i32 %ix.09, %conv42 br i1 %cmp1, label %if.then, label %for.inc43 44if.then:45 %mul = shl nuw nsw i32 %ix.09, 146 %arrayidx = getelementptr inbounds i8, ptr %p, i32 %mul47 %0 = load i8, ptr %arrayidx, align 148 %arrayidx3 = getelementptr inbounds i8, ptr %q, i32 %ix.0949 store i8 %0, ptr %arrayidx3, align 150 br label %for.inc51 52for.inc:53 %inc = add nuw nsw i32 %ix.09, 154 %exitcond = icmp eq i32 %inc, 102455 br i1 %exitcond, label %for.end, label %for.body56 57for.end:58 ret void59}60