Re: [LAD] vectorization

Malte Steiner wrote:
> typedef float v4sf __attribute__ ((vector_size(16)));

These attributes are mostly useful to ensure alignment etc. properties
of variables in stack.

> On AMD 64bit Turion (single core) on 64 Studio in 64bit mode this doesnt
> improve performance at all, actually it even get worse. Is GCC that good
> at optimizing on its own?

Currently compilers are not very good at vectorization of all algorithm
types. Still, best results can be reached with handwritten assembler...

        - Jussi
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Received on Fri Feb 8 04:15:01 2008