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| author | Techjar <tecknojar@gmail.com> | 2020-01-26 22:08:55 -0500 |
|---|---|---|
| committer | Techjar <tecknojar@gmail.com> | 2020-01-26 22:09:46 -0500 |
| commit | 185e49d2a99c9edd8adca92d45dd5ba02e9892de (patch) | |
| tree | 6b7d8b3d394501c292cfd309981609697856e83c /Source/Core/Common/x64CPUDetect.cpp | |
| parent | 52b52631c2d241cb0eddebb85d3b0473955bab87 (diff) | |
x64CPUDetect: Add flag for slow PDEP/PEXT on AMD Zen
For some unknown reason PDEP and PEXT are ridiculously slow on AMD Zen
architecture.
Diffstat (limited to 'Source/Core/Common/x64CPUDetect.cpp')
| -rw-r--r-- | Source/Core/Common/x64CPUDetect.cpp | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/Source/Core/Common/x64CPUDetect.cpp b/Source/Core/Common/x64CPUDetect.cpp index 0c3decba05..338c74b808 100644 --- a/Source/Core/Common/x64CPUDetect.cpp +++ b/Source/Core/Common/x64CPUDetect.cpp @@ -175,6 +175,7 @@ void CPUInfo::Detect() } bFlushToZero = bSSE; + bFastBMI2 = bBMI2 && !bZen; if (max_ex_fn >= 0x80000004) { |