Re: Compiler opt
Karl Hegbloom <email@example.com> writes:
> Here's the bug. It does not tell me, explicitly enough, whether or not
> -m64 implies -march=k8 or not. It seems to, but I'm not sure, since
> perhaps -march=k8 could be incompatible with the em64t. I think that
> the documentation should be a little more clear here.
They are orthogonal flags. On Debian-amd64 -m64 is on by default.
Using -march=k8 will turn on use of x86-64 instruction set.
Don't know if em64t support all of x86-64.