| ; RUN: opt -mtriple=s390x-unknown-linux -mcpu=z13 -passes=loop-vectorize \ | |
| ; RUN: -force-vector-width=4 -debug-only=loop-vectorize \ | |
| ; RUN: -enable-interleaved-mem-accesses=false -disable-output < %s 2>&1 \ | |
| ; RUN: | FileCheck %s | |
| ; REQUIRES: asserts | |
| ; | |
| ; Check that a scalarized load does not get a zero cost in a vectorized | |
| ; loop. It can only be folded into the add operand in the scalar loop. | |
| define i32 @fun(ptr %data, i64 %n, i64 %s, ptr %Src) { | |
| entry: | |
| br label %for.body | |
| for.body: | |
| %iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ] | |
| %acc = phi i32 [ 0, %entry ], [ %acc_next, %for.body ] | |
| %gep = getelementptr inbounds i32, ptr %Src, i64 %iv | |
| %ld = load i32, ptr %gep | |
| %acc_next = add i32 %acc, %ld | |
| %iv.next = add nuw nsw i64 %iv, 2 | |
| %cmp110.us = icmp slt i64 %iv.next, %n | |
| br i1 %cmp110.us, label %for.body, label %for.end | |
| for.end: | |
| ret i32 %acc_next | |
| ; CHECK: Cost of 4 for VF 4: REPLICATE ir<%ld> = load ir<%gep> | |
| } |