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| author | Craig Topper <craig.topper@intel.com> | 2018-02-08 07:54:16 +0000 |
|---|---|---|
| committer | Craig Topper <craig.topper@intel.com> | 2018-02-08 07:54:16 +0000 |
| commit | 93505707b6d3ec117e555c5a48adc2cc56470e38 (patch) | |
| tree | cba43d0312a42a16177ecf0b1cdd7d43c042adba /libcxx/test/std/re/re.regex/re.regex.construct/bad_backref.pass.cpp | |
| parent | f5465f98d2f210c20c94be9fe4edb9e60243ab80 (diff) | |
| download | bcm5719-llvm-93505707b6d3ec117e555c5a48adc2cc56470e38.tar.gz bcm5719-llvm-93505707b6d3ec117e555c5a48adc2cc56470e38.zip | |
[X86] Allow KORTEST instruction to be used for testing if a mask is all ones
The KTEST instruction sets the C flag if the result of anding both operands together is all 1s. We can use this to lower (icmp eq/ne (bitcast (vXi1 X), -1)
Differential Revision: https://reviews.llvm.org/D42772
llvm-svn: 324577
Diffstat (limited to 'libcxx/test/std/re/re.regex/re.regex.construct/bad_backref.pass.cpp')
0 files changed, 0 insertions, 0 deletions
