diff options
| author | Fiora <fioraaeterna@gmail.com> | 2014-09-14 05:31:22 -0700 |
|---|---|---|
| committer | Fiora <fioraaeterna@gmail.com> | 2014-09-14 05:31:22 -0700 |
| commit | 997c5c2d0e52969edc34ea463985a9c12be7c96c (patch) | |
| tree | 9806958634821e5ce6a8cbfa40057c0d3ac34f07 /Source/Core/Common/x64CPUDetect.cpp | |
| parent | 84a564a304e9eb003fd3a39dcc5df652037c1dc5 (diff) | |
x64Emitter: add LZCNT/TZCNT support and detection
Also add a unit test.
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 8c3738034a..0da02d0fb4 100644 --- a/Source/Core/Common/x64CPUDetect.cpp +++ b/Source/Core/Common/x64CPUDetect.cpp @@ -197,6 +197,7 @@ void CPUInfo::Detect() // Check for more features. __cpuid(cpu_id, 0x80000001); if (cpu_id[2] & 1) bLAHFSAHF64 = true; + if ((cpu_id[2] >> 5) & 1) bLZCNT = true; if ((cpu_id[3] >> 29) & 1) bLongMode = true; } |