[MPlayer-dev-eng] [PATCH] Correctly set optimization flag for Athlon. Closes Bug #267

[Zuxy Meng]

Hi,

AMD's Family 6 CPUs come with two flavors: one that supports SSE and
one that dosen't. However, they're not easily distinguishible from
their signature (family, model and stepping). Original configure might
set -march=athlon-4 for a CPU that dosen't support SSE and causes gcc
to generate code that won't run on the target machine. The attached
patch corrects this.

BTW: Someone might wonder why it's rarely reported before. The reason
I guess is two-fold: firstly Duron with model 6 or 8 is uncommon, and
secondly gcc in most cases won't generate SSE instructions for normal
C code, unless one of -ftree-vectorize or -mfpunit=sse is specified.

--
Zuxy
Beauty is truth,
While truth is beauty.
PGP KeyID: E8555ED6
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