First thanks for the reply. I want to know what can be done in the back end of a target to indicate that SIMD stuff should be emulated all the way.
__attribute__ ((vector_size (NN))) is something that can be done in programs. Is there any target macros or hooks available for that. Will the target hook TARGET_VECTOR_MODE_SUPPORTED_P hep me to indicate that? Guess this is the right mailing list for my question. Thanks in advance. Regards, Shafi. ----- Original Message ---- From: Ian Lance Taylor <[EMAIL PROTECTED]> To: Mohamed Shafi <[EMAIL PROTECTED]> Cc: gcc@gcc.gnu.org Sent: Friday, October 13, 2006 8:01:11 PM Subject: Re: Abt SIMD Emulation Mohamed Shafi <[EMAIL PROTECTED]> writes: This question is more appropriate for the gcc-help mailing list than for the gcc mailing list. > For targets which doesn't have simd hardware support like fr30 , simd stuff > is emulated? Yes, if you use __attribute__ ((vector_size (NN))) for a target which does not support vector registers of that size, gcc will emulate the vector handling. > Is there some flags/macros in gcc to indicate that? To indicate what? > How is it done in other targets which deosnt have the hardware support? In the obvious tedious way: as a loop over the elements. Ian
