https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70873
H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
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CC| |ubizjak at gmail dot com
--- Comment #5 from H.J. Lu <hjl.tools at gmail dot com> ---
This optimization is implemented with define_peephole2:
commit 01c074df07cc82f1a032d12a786b3109467a2a6b
Author: wmi <wmi@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Tue Oct 1 23:32:55 2013 +0000
2013-10-01 Wei Mi <w...@google.com>
* config/i386/x86-tune.def (DEF_TUNE): Remove
m_CORE_ALL.
* config/i386/i386.md: Add define_peephole2 to
break partial reg stall for cvtss2sd/cvtsd2ss.
which is sensitive to regrename. Should it be implemented with
define_split?
