On Wed, Aug 10, 2005 at 10:18:41AM -0400, Jakub Jelinek wrote: > On Wed, Aug 10, 2005 at 07:09:04AM -0700, H. J. Lu wrote: > > On Tue, Aug 09, 2005 at 02:58:51PM -0700, Richard Henderson wrote: > > > On Tue, Aug 09, 2005 at 02:30:46PM -0700, H. J. Lu wrote: > > > > There is a minor problem. How can I add crtfastmath.o for SSE targets > > > > only? > > > > > > You don't. You either add code to detect sse, or you make the > > > spec depend on -mfpmath=sse. > > > > > > > Here is the patch to enable FTZ/DAZ for SSE via fast math. There are > > no regressions on Linux/x86_64 nor Linux/ia32. The performance of one > > FP benchmark on EM64T is more than doubled with -ffast-math. > > Not all i?86 CPUs support cpuid instruction. > Please look at > gcc/testsuite/gcc.dg/i386-cpuid.h > for the ugly details. >
Ok. Also all x86_64 supports SSE. There is no need to check that in 64bit. H.J.
