https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105504
Eric Gallager changed:
What|Removed |Added
Status|UNCONFIRMED |RESOLVED
Resolution|---
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105504
Hongtao.liu changed:
What|Removed |Added
CC||crazylht at gmail dot com
--- Comment #8
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105504
--- Comment #7 from Eric Gallager ---
(In reply to CVS Commits from comment #6)
> The master branch has been updated by hongtao Liu :
>
> https://gcc.gnu.org/g:5e005393d4ff0a428c5f55b9ba7f65d6078a7cf5
>
> commit r13-1009-g5e005393d4ff0a428c5f5
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105504
--- Comment #6 from CVS Commits ---
The master branch has been updated by hongtao Liu :
https://gcc.gnu.org/g:5e005393d4ff0a428c5f55b9ba7f65d6078a7cf5
commit r13-1009-g5e005393d4ff0a428c5f55b9ba7f65d6078a7cf5
Author: liuhongt
Date: Mon May
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105504
--- Comment #5 from Alexander Monakov ---
The strange xmm0 spill issue may affect more code, so I reported an isolated
testcase: PR 105513 (regression vs. gcc-8, the complete testcase in this PR
also does not spill with gcc-8).
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105504
--- Comment #4 from Hongtao.liu ---
Another possible solution is add a little bit dislike for "m" alternative(like
?m) to avoid potential spill.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105504
Hongtao.liu changed:
What|Removed |Added
CC||hjl.tools at gmail dot com
--- Comment #3
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105504
--- Comment #2 from Hongtao.liu ---
After set remove_partial_avx_dependency to true for register alternative, we
get
vxorps %xmm3, %xmm3, %xmm3
vmovsd .LC16(%rip), %xmm6
vmovsd .LC14(%rip), %xmm5
vcvtss2sd
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105504
--- Comment #1 from Hongtao.liu ---
Pass remove_partial_avx_dependency is before RA, which we have
(insn 128 127 129 22 (set (reg/v:DF 99 [ z ])
(float_extend:DF (reg/v:SF 117 [ x ]))) "test.c":43:10 163
{*extendsfdf2}
and attr avx_par
