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Re: -mno-sse and -mno-sse2 broken on opteron?
On Thu, Jan 06, 2005 at 07:41:52AM -0800, Steve Kargl wrote:
> gcc.info implies that one can use -mno-sse{2} with x86_64.
> If this is not true, then gcc.info needs to be fix and these
> options should be disabled/removed for x86_64 targets.
It is true. Indeed, one *wants* to use -mno-sse when compiling
kernel code, so that you're sure that the compiler won't clobber
these registers without your knowledge.
It's just that, for user-level code, -mno-sse isn't that useful
for x86_64.
r~