Ping?
On Sat, 26 Jul 2014, Marc Glisse wrote:
Hello,
any comment on this patch?
https://gcc.gnu.org/ml/gcc-patches/2014-06/msg00769.html
On Tue, 10 Jun 2014, Marc Glisse wrote:
On Tue, 19 Mar 2013, Richard Henderson wrote:
I'm not fond of this, primarily because I believe the pattern should
not exist at all.
One year later, new try. Tweaking the pattern, I ended up with a copy of
the mov pattern (the subreg is generated automatically when the modes don't
match), so I just removed it. I know the comment in emit-rtl.c says
splitters are a better way forward than subregs, but I haven't managed with
splitters while the subreg patch is very simple :-) I added a -O0 testcase
because when I was experimenting I had many versions that worked for -O2
but ICEd at -O0 (and vice versa), but it might be redundant with some other
tests.
Bootstrap+testsuite on x86_64-linux-gnu.
2014-06-10 Marc Glisse <marc.gli...@inria.fr>
PR target/50829
gcc/
* config/i386/sse.md (enum unspec): Remove UNSPEC_CAST.
(avx_<castmode><avxsizesuffix>_<castmode>): Remove.
* config/i386/i386.c (builtin_description) [__builtin_ia32_si256_si,
__builtin_ia32_ps256_ps, __builtin_ia32_pd256_pd]: Replace the
removed insn with mov.
* emit-rtl.c (validate_subreg): Allow vector-vector subregs.
gcc/testsuite/
* gcc.target/i386/pr50829-1.c: New file.
* gcc.target/i386/pr50829-2.c: New file.
--
Marc Glisse
