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Re: [BENCHMARK]-mfpmath=sse should disable x387 intrinsics


Richard Guenther wrote:

For me, specifying -mfpmath=sse,387 is 4% slower than -mfpmath=sse.  I gues
that 387 does not only enable 387 intrinsics but also all other
regular patterns?

I would prefer the -mfpmath=sse behavior _not_ to be changed for ia32.

Yes, Roger's patch is a good thing, and should stay in. Previously, you didn't have any switch available to turn i387 intrinsics off.

BTW: Did you add "-D __NO_MATH_INLINES" to compile parameters when compiling your application?

Uros.


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