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| author | H.J. Lu <hongjiu.lu@intel.com> | 2017-11-15 19:30:58 +0000 |
|---|---|---|
| committer | H.J. Lu <hjl@gcc.gnu.org> | 2017-11-15 11:30:58 -0800 |
| commit | 348188bf59ad01b6575165ef52e72dd58d331735 (patch) | |
| tree | 2cbdb40ab76164958e7ecb5cde1c55f5dbc40a67 /gcc/final.c | |
| parent | 41e181973e27274f2d188b9eff0c5935b76d559c (diff) | |
| download | gcc-348188bf59ad01b6575165ef52e72dd58d331735.zip gcc-348188bf59ad01b6575165ef52e72dd58d331735.tar.gz gcc-348188bf59ad01b6575165ef52e72dd58d331735.tar.bz2 | |
i386: Add X86_TUNE_EMIT_VZEROUPPER
Add X86_TUNE_EMIT_VZEROUPPER to indicate if vzeroupper instruction should
be inserted before a transfer of control flow out of the function. It is
turned on by default unless we are tuning for KNL. Users can always use
-mzeroupper or -mno-zeroupper to override X86_TUNE_EMIT_VZEROUPPER.
gcc/
PR target/82990
* config/i386/i386.c (pass_insert_vzeroupper::gate): Remove
TARGET_AVX512ER check.
(ix86_option_override_internal): Set MASK_VZEROUPPER if
neither -mzeroupper nor -mno-zeroupper is used and
TARGET_EMIT_VZEROUPPER is set.
* config/i386/i386.h (TARGET_EMIT_VZEROUPPER): New.
* config/i386/x86-tune.def: Add X86_TUNE_EMIT_VZEROUPPER.
gcc/testsuite/
PR target/82990
* gcc.target/i386/pr82942-2.c: Add -mtune=knl.
* gcc.target/i386/pr82990-1.c: New test.
* gcc.target/i386/pr82990-2.c: Likewise.
* gcc.target/i386/pr82990-3.c: Likewise.
* gcc.target/i386/pr82990-4.c: Likewise.
* gcc.target/i386/pr82990-5.c: Likewise.
* gcc.target/i386/pr82990-6.c: Likewise.
* gcc.target/i386/pr82990-7.c: Likewise.
From-SVN: r254783
Diffstat (limited to 'gcc/final.c')
0 files changed, 0 insertions, 0 deletions