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Re: [RFC] try to generate FP and/or/xor instructions for SSE
On 8/23/07, Richard Guenther <richard.guenther@gmail.com> wrote:
> Well, they can also used to mask integer typed vectors -- after all
> how you use a comparison result isn't affected by the comparison
> operand types ;)
Right. But the penalty kicks in because fp vectors have an auxiliary
tag attached describing some properties and non ps|pd ops do not
propagate/produce that tag. If i'm not mistaken, both k8 and core2
work more or less that way.
So such 'conversion' only matter in one way, something -> ps|pd.