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| author | Gabor Buella <gabor.buella@intel.com> | 2018-04-13 07:35:08 +0000 |
|---|---|---|
| committer | Gabor Buella <gabor.buella@intel.com> | 2018-04-13 07:35:08 +0000 |
| commit | 604be4424bdc2ad62a386ad656ea287e1adde05f (patch) | |
| tree | 3cee2e03a33c8755623a1e1145d0245b1814dfc6 /llvm/lib/Support/Host.cpp | |
| parent | 8293161712e68ff966d5dbfb623c5e33d96331f0 (diff) | |
| download | bcm5719-llvm-604be4424bdc2ad62a386ad656ea287e1adde05f.tar.gz bcm5719-llvm-604be4424bdc2ad62a386ad656ea287e1adde05f.zip | |
[X86] Introduce cldemote instruction
Hint to hardware to move the cache line containing the
address to a more distant level of the cache without
writing back to memory.
Reviewers: craig.topper, zvi
Reviewed By: craig.topper
Differential Revision: https://reviews.llvm.org/D45256
llvm-svn: 329992
Diffstat (limited to 'llvm/lib/Support/Host.cpp')
| -rw-r--r-- | llvm/lib/Support/Host.cpp | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/llvm/lib/Support/Host.cpp b/llvm/lib/Support/Host.cpp index 304a9e3736a..4df1102cf26 100644 --- a/llvm/lib/Support/Host.cpp +++ b/llvm/lib/Support/Host.cpp @@ -1257,6 +1257,7 @@ bool sys::getHostCPUFeatures(StringMap<bool> &Features) { Features["avx512bitalg"] = HasLeaf7 && ((ECX >> 12) & 1) && HasAVX512Save; Features["avx512vpopcntdq"] = HasLeaf7 && ((ECX >> 14) & 1) && HasAVX512Save; Features["rdpid"] = HasLeaf7 && ((ECX >> 22) & 1); + Features["cldemote"] = HasLeaf7 && ((ECX >> 25) & 1); Features["ibt"] = HasLeaf7 && ((EDX >> 20) & 1); |
