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[Bug tree-optimization/21485] [4.3/4.4/4.5/4.6 Regression] missed load PRE, PRE makes i?86 suck
- From: "hubicka at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Sat, 8 Jan 2011 16:21:46 +0000
- Subject: [Bug tree-optimization/21485] [4.3/4.4/4.5/4.6 Regression] missed load PRE, PRE makes i?86 suck
- Auto-submitted: auto-generated
- References: <bug-21485-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21485
Jan Hubicka <hubicka at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed|2008-10-03 23:54:40 |2011-02-06 23:54:40
CC| |hubicka at gcc dot gnu.org,
| |vmakarov at redhat dot com
Known to fail| |4.6.0
--- Comment #44 from Jan Hubicka <hubicka at gcc dot gnu.org> 2011-01-08 16:21:07 UTC ---
Seems that even in IRA world we made no progress
jh@evans:/abuild/jh/trunk-3/build-inst2/gcc> ./xgcc -B ./ -O3 reg.i
jh@evans:/abuild/jh/trunk-3/build-inst2/gcc> tim e./a.out
If 'tim' is not a typo you can run the following command to lookup the package
that contains the binary:
command-not-found tim
bash: tim: command not found
jh@evans:/abuild/jh/trunk-3/build-inst2/gcc> time ./a.out
1000.8
real 0m5.179s
user 0m5.176s
sys 0m0.000s
jh@evans:/abuild/jh/trunk-3/build-inst2/gcc> gcc-4.3 -O3 reg.i
jh@evans:/abuild/jh/trunk-3/build-inst2/gcc> time ./a.out
1180.8
real 0m5.195s
user 0m5.192s
sys 0m0.000s
jh@evans:/abuild/jh/trunk-3/build-inst2/gcc>
-fno-tree-pre -fno-inline -fschedule-insns makes no difference
Adding vladimir to list as it is partly RA issue