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[i386] pni => sse3 -- GCC 3.3.3 related

The 90nm version of the Pentium 4 (formerly code named Prescott) was released yesterday. Somewhat surprisingly, the chip was not given a new name.

Unsurprisingly, PNI (Prescott New Instructions) were renamed to SSE3. This mechanical patch updates GCC accordingly.

Note that this renaming is riding on the fact that "-mpni" support has not yet been included in a FSF released compiler. However, this feature was backported to be included in GCC 3.3.3 ( Personally I think it would be a mistake to include an option switch which was based on an internal codename in a released compiler -- especially a bug fix compiler. If 3.3.3 is released as is then "-mpni" will have to be supported for years afterward.

This is why I believe that either this patch also needs to included with GCC 3.3.3 or else the recently added PNI support should be reverted from 3.3.3.

Patch was bootstrapped on pentium4-pc-cygwin — though I do not have Pentium 4 E-step to test its effectiveness on.


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