patch: Enhancements to SIMD loop fusion

[Stefan Seefeld]

The attached patch adds some optimizations as well as more functionality
(support for complex types, as well as fused multiply-add) to the
SIMD loop fusion harness.

As SSE(2) doesn't provide fused multiply-add, the fma() implementation
falls back on mul() and add(). For AltiVec fma() still needs to be implemented.

No regressions were observed with gcc 4.1.

OK to commit ?

Thanks,
		Stefan

-- 
Stefan Seefeld
CodeSourcery
stefan at codesourcery.com
(650) 331-3385 x718
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