This is the mail archive of the
gcc@gcc.gnu.org
mailing list for the GCC project.
SSE builtins for ia32
- From: Paul Koning <pkoning at equallogic dot com>
- To: gcc at gcc dot gnu dot org
- Date: Tue, 23 Aug 2005 16:32:42 -0400
- Subject: SSE builtins for ia32
Two things I'm wondering about:
1. Why do _builtin_ia32_paddusb and similar functions take signed
vector arguments, when the hardware primitive is defined to operate
on unsigned vectors?
2. Why are there no sse equivalents of those functions, ones that
operate on 128 bit values (i.e., paddusb for v16qi vectors)?
paul