[MPlayer-dev-eng] [PATCH] TOOLS/cpuinfo.c: correct k6_mtrr detection

[Guillaume Poirier]

Hi,
Zuxy wrote:
> Two years ago Diego added '{ 32, "k6_mtrr", "Memory Type Range
> Registers" }' to TOOLS/cpuinfo.c. However, the instruction "sal eax,
> 32" is in effect identical to "sal eax, 0", so what cpuinfo.c really
> checked is bit 0 of the extended feature string, i.e. built-in FPU. As
> a consequence k6_mtrr was reported on virtually every AMD CPU.
> However, only some K6-2 and K6-III supports this type of MTRR,
> including neither K6, which dosen't have any MTRR, nor Athlons, which
> implement MTRR in a way compliant with Intel P6.
> 
> The attached patch corrects this, plus a lot of new feature bits that
> pave the way for future optimizations to mplayer, including SSE3.

This patch works as expected on the machines I've tested it. I'll commit
it this week in no one objects.

Guillaume