What do you guys thing about the P4
dhess at bothan.net
Thu Apr 5 20:24:32 EDT 2001
On Thu, 5 Apr 2001, Don Holmgren wrote:
> - SSE support requires a kernel patch for the 2.2.x kernels. gcc has no
> specific support (I believe) for SSE, though adding macros to
> implement the prefetch instructions is easy, and I'd much rather do
> the hand assembly coding in NASM. pgcc will use SSE instructions and
> attempt to vectorize.
CVS gcc can generate SSE and SSE2 code instead of x87 code with -msse and
-msse2. On one of my apps (a rendering package), I get about a 10%
speedup on a Pentium 4 just by throwing the -msse2 switch. It also has
support for SSE and SSE2 builtins, but I don't think they're working yet.
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