1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
| ; 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
}
|