[llvm] r353963 - [X86] Add 'fxsr' to the getHostCPUFeatures detection code.

[Craig Topper via llvm-commits]

Author: ctopper
Date: Wed Feb 13 10:21:36 2019
New Revision: 353963

URL: http://llvm.org/viewvc/llvm-project?rev=353963&view=rev
Log:
[X86] Add 'fxsr' to the getHostCPUFeatures detection code.

We implicitly mark this feature as enabled when the target is 64-bits, but our detection code for -march=native didn't support it so you can't detect it on 32-bit targets.

Modified:
    llvm/trunk/lib/Support/Host.cpp

Modified: llvm/trunk/lib/Support/Host.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Support/Host.cpp?rev=353963&r1=353962&r2=353963&view=diff
==============================================================================
--- llvm/trunk/lib/Support/Host.cpp (original)
+++ llvm/trunk/lib/Support/Host.cpp Wed Feb 13 10:21:36 2019
@@ -1259,6 +1259,7 @@ bool sys::getHostCPUFeatures(StringMap<b
 
   Features["cmov"]   = (EDX >> 15) & 1;
   Features["mmx"]    = (EDX >> 23) & 1;
+  Features["fxsr"]   = (EDX >> 24) & 1;
   Features["sse"]    = (EDX >> 25) & 1;
   Features["sse2"]   = (EDX >> 26) & 1;