[MIPS][Loongson2] SIMD improvement

Ruan Beihong ruanbeihong@gmail.com
Sat Jan 24 14:04:00 GMT 2009

This patch adds following insntructions:
integer AND OR NOR XOR on fpu,
integer sll srl sra on fpu,
and their testsuite code.

It also adds a transparent union __vecpack
to represent all vector types.

James Ruan
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