[Bug target/100637] New: [i386] Vectorize 4-byte vectors
ubizjak at gmail dot com
gcc-bugzilla@gcc.gnu.org
Mon May 17 12:19:23 GMT 2021
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100637
Bug ID: 100637
Summary: [i386] Vectorize 4-byte vectors
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: ubizjak at gmail dot com
Target Milestone: ---
Following testcases involving 4 byte vectors, e.g.:
typedef char __v4qi __attribute__ ((__vector_size__ (4)));
__v4qi foo (__v4qi a, __v4qi b, __v4qi c)
{
return (a & ~b) + c;
}
char rb[4], sb[4], tb[4];
void bar_b (void)
{
int i;
for (i = 0; i < 4; i++)
rb[i] = sb[i] + tb[i];
}
short rw[2], sw[2], tw[2];
void bar_w (void)
{
int i;
for (i = 0; i < 2; i++)
rw[i] = sw[i] + tw[i];
}
should vectorize on SSE2 targets using partial vectors.
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