[PATCH] x86 NaCl: Emit LAHF/SAHF instead of PUSHF/POPF

Reid Kleckner rnk at google.com
Fri Dec 12 10:33:46 PST 2014


LLVM should never, ever generate popf from normal code. It's ridiculously slow. We should use sahf/lahf if we can.


http://reviews.llvm.org/D6629

EMAIL PREFERENCES
  http://reviews.llvm.org/settings/panel/emailpreferences/






More information about the llvm-commits mailing list