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[Bug optimization/13653] [3.3 regression] -O2 -funroll-loop miscompiles POOMA testcase
- From: "dberlin at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 18 Jan 2004 03:54:43 -0000
- Subject: [Bug optimization/13653] [3.3 regression] -O2 -funroll-loop miscompiles POOMA testcase
- References: <20040112101346.13653.rguenth@tat.physik.uni-tuebingen.de>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From dberlin at gcc dot gnu dot org 2004-01-18 03:54 -------
Just a progress update
This is taking a while to minimize because it takes 40 seconds per compile at the current length
and i do two compiles per minimize, to make sure it works at -O2 but breaks with -O2 -funroll-
loops.
It'll probably be another few days before it's minimal.
But it's already gotten 25% smaller
[dberlin@dberlin tmp0]$ wc 8472.c
19949 88459 944229 8472.c
^^^^^^
Smallest so far that works at -O2 and doesn't work at -O2 -funroll-loops
[dberlin@dberlin tmp0]$ wc 000.c
26943 127952 1369563 000.c
^^^^^
Original array_test1.cpp
[dberlin@dberlin tmp0]$
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13653