bug#42147: 28.0.50; pure vs side-effect-free, missing optimizations?

[Paul Eggert]

On 7/4/20 9:15 AM, Eli Zaretskii wrote:
>> * configure.ac: On x86 with GCC, default to -msse2 -mfpmath=sse.
> This assumes that the system on which Emacs runs is the same as where
> it was built, doesn't it?
It doesn't assume they're the same system. It merely assumes that build and
host platforms both support SSE2, which is a safe assumption nowadays.