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[Bug target/59968] Unused BT patterns
- 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, 29 Jan 2014 17:58:42 +0000
- Subject: [Bug target/59968] Unused BT patterns
- Auto-submitted: auto-generated
- References: <bug-59968-4 at http dot gcc dot gnu dot org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59968
H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #31974|0 |1
is obsolete| |
--- Comment #18 from H.J. Lu <hjl.tools at gmail dot com> ---
Created attachment 31983
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=31983&action=edit
Micro-benchmark for bt, btr, bts
These micro-benchmark for bt, btr, bts show
that BTx with register operand is 8 to 30%
faster on Sandy Bride, Ivy Bridge, Haswell
and Silvermont.