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[Bug rtl-optimization/22472] [4.1 regression] testsuite failure gcc.c-torture/compile/930621-1.c -O3 -funroll-loops
- From: "sje at cup dot hp dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 19 Jul 2005 17:00:46 -0000
- Subject: [Bug rtl-optimization/22472] [4.1 regression] testsuite failure gcc.c-torture/compile/930621-1.c -O3 -funroll-loops
- References: <20050713233852.22472.danglin@gcc.gnu.org>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From sje at cup dot hp dot com 2005-07-19 17:00 -------
It looks like this is a rename-registers issue. I checked in a patch so one
could specify -fno-rename-registers (or -fno-web or -fno-gcse-after-reload) in
combination with -funroll-loops. Using -fno-web or -fno-gcse-after-reload in
combination with -O3 -funroll-loops had no effect but using
-fno-rename-registers made the problem go away.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22472