>From 1.3.1's configure.ac:
if test "x$asm_optimisation$sse_os" = "xyesyes" ; then
XIPH_ADD_CFLAGS([-msse2])
fi
-msse2 tells the compiler that it can generate SSE2 instructions.
The resulting code will _not_ run on CPUs without SSE2. This is
counter to the assembly optimizations themselves, which check at
runtime if extensions like SSE etc. are available.
This doesn't matter for x86-64, which includes SSE2 by definition,
but it should affect ia32.
--
Christian "naddy" Weisgerber [email protected]
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