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(parent: 310a21a) | patch
Short circuit if upper 128bits are unchanged in the block.
authorH.J. Lu <hongjiu.lu@intel.com>
Thu, 30 Dec 2010 13:13:13 +0000 (13:13 +0000)
committerH.J. Lu <hjl@gcc.gnu.org>
Thu, 30 Dec 2010 13:13:13 +0000 (05:13 -0800)
commit720386ac5f2f615f03289eb196b0ad4683d860a3
treecb3749fa5d94b46c7f0e186eda5b55231ff8e7catree
parent310a21aa3120a17fe90c02faf1c462de2789c4e3commit | diff
Short circuit if upper 128bits are unchanged in the block.

2010-12-30  H.J. Lu  <hongjiu.lu@intel.com>

* config/i386/i386.c (upper_128bits_state): Remove comments.
(block_info_def): Add unchanged.
(move_or_delete_vzeroupper_2): Short circuit if upper 128bits
are unchanged in the block.

From-SVN: r168343
gcc/ChangeLog diff | blob | history
gcc/config/i386/i386.c diff | blob | history