1 ; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z14 -prefetch-distance=20 \
2 ; RUN: -loop-prefetch-writes -stop-after=loop-data-prefetch | FileCheck %s
4 ; Check that for a load followed by a store to the same address gets a single
7 ; CHECK-LABEL: for.body
8 ; CHECK: call void @llvm.prefetch.p0(ptr %scevgep, i32 1, i32 3, i32 1
9 ; CHECK-not: call void @llvm.prefetch
11 define void @fun(ptr nocapture %Src, ptr nocapture readonly %Dst) {
16 %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next.9, %for.body ]
17 %arrayidx = getelementptr inbounds i32, ptr %Dst, i64 %indvars.iv
18 %0 = load i32, ptr %arrayidx, align 4
20 store i32 %a, ptr %arrayidx, align 4
21 %indvars.iv.next.9 = add nuw nsw i64 %indvars.iv, 1600
22 %cmp.9 = icmp ult i64 %indvars.iv.next.9, 11200
23 br i1 %cmp.9, label %for.body, label %for.cond.cleanup