On Jun 7, 2006, at 11:13 PM, Uros Bizjak wrote:
Hello! Current mainline gcc can efficiently disable x87 instruction when -mno-80387 switch is used. In this case, MMX registers can be used for the autovectorisation even without emms or femms instructions to switch back to x87 mode.
I don't think so, because another function could use x87 instructions even without you knowing it. -- Pinski
