[Bug target/82990] Add -mprefer-vzeroupper

2017-11-14 Thread hjl.tools at gmail dot com
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82990 H.J. Lu changed: What|Removed |Added Attachment #42608|0 |1 is obsolete|

[Bug target/82990] Add -mprefer-vzeroupper

2017-11-14 Thread hjl.tools at gmail dot com
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82990 H.J. Lu changed: What|Removed |Added Status|UNCONFIRMED |NEW Last reconfirmed|

[Bug target/82990] Add -mprefer-vzeroupper

2017-11-14 Thread hjl.tools at gmail dot com
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82990 --- Comment #2 from H.J. Lu --- Created attachment 42608 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=42608&action=edit A patch Sebastian, please take a look.

[Bug target/82990] Add -mprefer-vzeroupper

2017-11-14 Thread hjl.tools at gmail dot com
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82990 --- Comment #1 from H.J. Lu --- We would like -mprefer-vzeroupper default to on and -mtune=knl should override it.