I'm using "-O3 -march=pentium2 -mmmx -ffast-math -fomit-frame-pointer -pipe" as CFLAGS (and CXXFLAGS), and I wonder if -mmmx may be omited. The actual question is, does -march=xxx includes mmx, mmx2, 3dnow, 3dnow2, sse and sse2 for appropriate arch? And what to use as CFLAGS for my Celeron 300A (Mendocino)? Thanx a lot. :o)
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