| ; RUN: opt -mtriple=s390x-unknown-linux -mcpu=z13 -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(i64* %data, i64 %n, i64 %s, i32* %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, i32* %Src, i64 %iv |
| %ld = load i32, i32* %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: Found an estimated cost of 4 for VF 4 For instruction: %ld = load i32, i32* %gep |
| } |
