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[Bug tree-optimization/32604] [4.3 regression] miscompilation at -O2
- From: "ubizjak at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 3 Jul 2007 10:26:57 -0000
- Subject: [Bug tree-optimization/32604] [4.3 regression] miscompilation at -O2
- References: <bug-32604-6642@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #3 from ubizjak at gmail dot com 2007-07-03 10:26 -------
(In reply to comment #2)
> I don't see anything obvious in the diff between before FRE and after, likewise
> for PRE.
gfortran -O1 -fno-tree-fre pr32604.f90
./a.out
1.00000000000000
gfortran -O2 pr32604.f90
./a.out
0.00000000000000
gfortran -O2 -fno-tree-pre pr32604.f90
./a.out
1.00000000000000
gfortran -O2 -fno-tree-fre pr32604.f90
./a.out
0.00000000000000
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32604