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[Bug tree-optimization/19038] [4.0 Regression] out-of ssa causing loops to have more than one BB
- From: "mustafa at il dot ibm dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 24 Dec 2004 12:13:48 -0000
- Subject: [Bug tree-optimization/19038] [4.0 Regression] out-of ssa causing loops to have more than one BB
- References: <20041216155140.19038.dje@gcc.gnu.org>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From mustafa at il dot ibm dot com 2004-12-24 12:13 -------
Doing loop header copying in RTL works around this problem, doing so
gain us improvements of 3.9% for SPECINT on a G5 machine and a 66%
for gcc benchmark.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19038