[x86] do not issue invalid vec_select from V2DI
Richard Henderson
rth@redhat.com
Thu Jan 5 03:38:00 GMT 2006
On Wed, Jan 04, 2006 at 09:05:22PM -0200, Alexandre Oliva wrote:
> instead of the simpler (and SSE1-compatible, I hope, although this is
> all new to me and I haven't found reliable docs on differences between
> SSE1 and SSE2 so far):
What you have isn't sse1 compatible; sse1 doesn't have anything
to do with doubles or integers.
See also typed registers and the reformatting costs associated.
If we have an integer formatted register, unless optimizing for
size, we prefer to use insns that operate on integers. Thus the
shift instead of movhlpd.
r~
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