"SSE instruction set disabled?"

Andi Kleen ak@suse.de
Wed Dec 4 17:22:00 GMT 2002


"Scott Robert Ladd" <scott@coyotegulch.com> writes:

> Implied -fpmath=sse may *not* be a good thing under certain circumstances...

One problem is that SSE2 instructions are much bigger than x87. SSE is usually
three bytes or more for everthing, while x87 has shorter encodings. You usually
bloat the program a lot when you use a lot of floating point. 
Fortunately that's rare.

-Andi



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