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[Bug target/82990] Update the default -mzeroupper setting
- From: "hjl.tools at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 15 Nov 2017 05:20:14 +0000
- Subject: [Bug target/82990] Update the default -mzeroupper setting
- Auto-submitted: auto-generated
- References: <bug-82990-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82990
H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ubizjak at gmail dot com
Target Milestone|--- |8.0
Summary|Add -mprefer-vzeroupper |Update the default
| |-mzeroupper setting
--- Comment #4 from H.J. Lu <hjl.tools at gmail dot com> ---
-mzeroupper is specified to generate vzeroupper instruction. If it
isn't used, the default should depend on !TARGET_AVX512ER. Users can
always use -mzeroupper or -mno-zeroupper to override it.