https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100637
Uroš Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |ubizjak at gmail dot com
Last reconfirmed| |2021-05-17
Ever confirmed|0 |1
--- Comment #1 from Uroš Bizjak <ubizjak at gmail dot com> ---
Created attachment 50822
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=50822&action=edit
Patch that enables vectorization of 4-byte vectors
The patch introduces infrastructure to vectorize 4-byte vectors on SSE2
targets. The vectorization of logic and plus/minus instructions is
demonstrated, using -O3 -msse2 produces for the above testcases:
foo:
movd %esi, %xmm0
movd %edi, %xmm2
movd %edx, %xmm1
pandn %xmm2, %xmm0
paddb %xmm0, %xmm1
movd %xmm1, %eax
ret
bar_b:
movd tb(%rip), %xmm0
movd sb(%rip), %xmm1
paddb %xmm1, %xmm0
movd %xmm0, rb(%rip)
ret
bar_w:
movd tw(%rip), %xmm0
movd sw(%rip), %xmm1
paddw %xmm1, %xmm0
movd %xmm0, rw(%rip)
ret
