--- Comment #16 from pluto at agmk dot net 2005-11-21 11:29 ---
without Uros' mmx-patch the gcc-4.1.0-20051113 generates amazing code:
(gcc -O3 -march=pentium3 -S -fomit-frame-pointer pr14552.c)
test: subl$20, %esp
movlw, %eax
movlw+4, %edx
movl
--- Additional Comments From uros at kss-loka dot si 2005-09-15 11:39
---
(In reply to comment #14)
> Yes, it does not work when configuring gcc with --with-cpu=pentium4 see PR
19161.
No, the patch works OK for pentium4. The remaining problem is in
optimize_mode_switching() function.
--- Additional Comments From pinskia at gcc dot gnu dot org 2005-09-13
21:13 ---
(In reply to comment #13)
> Are there remaining issues with them?
Yes, it does not work when configuring gcc with --with-cpu=pentium4 see PR
19161.
--
What|Removed |Add
--- Additional Comments From fjahanian at apple dot com 2005-09-13 21:09
---
Hello,
What is the status of Uros's patches in:
http://gcc.gnu.org/ml/gcc-patches/2005-07/msg01128.html
Looks like they did not make it to FSF mainline? Are there remaining issues
with them?
--
http://
--- Additional Comments From uros at kss-loka dot si 2005-07-21 08:42
---
You can patch the mainline 4.1 compiler with the patch at
http://gcc.gnu.org/ml/gcc-patches/2005-07/msg01128.html. Patch (which is
currently awaiting a review) will make gcc to produce optimal code:
'gcc -O2 -mm
--- Additional Comments From uros at kss-loka dot si 2005-06-22 10:14
---
Just for fun, I have compiled the testcase with MMX/x87 mode switching patch
included, to check MMX vector extensions. This little patch is needed to enable
MMX vector extensions (only MMX vector add expander is
--
What|Removed |Added
Target Milestone|4.1.0 |---
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14552
--- Additional Comments From rth at gcc dot gnu dot org 2005-01-18 11:34
---
No, Andrew, mainline is not plainly wrong. We are correctly not using the
MMX unit when is not in use. The instruction selection thing
can still be seen with the SSE unit though, if you widen the vectors to
--
Bug 14552 depends on bug 19391, which changed state.
Bug 19391 Summary: [4.0 Regression] missed optimization with size of 8 vectors
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19391
What|Old Value |New Value
--
--
What|Removed |Added
BugsThisDependsOn||19391
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14552
--- Additional Comments From pinskia at gcc dot gnu dot org 2005-01-12
06:26 ---
I will have to file a new bug for this as we produce so much worse code now on
the mainline but that is
because we expand the + to do it all four times instead of using the sse/mmx
unit which is just plai
11 matches
Mail list logo
