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[Bug tree-optimization/25621] Missed optimization when unrolling the loop (splitting up the sum) (only with -ffast-math)
- From: "eres at il dot ibm dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 4 Jul 2007 08:57:51 -0000
- Subject: [Bug tree-optimization/25621] Missed optimization when unrolling the loop (splitting up the sum) (only with -ffast-math)
- References: <bug-25621-6642@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #5 from eres at il dot ibm dot com 2007-07-04 08:57 -------
You can also try to tune --param max-variable-expansions-in-unroller. The
default is to add one expansion (which seems to be the most helpful due to the
fact that adding more expansions can increase register pressure).
--
eres at il dot ibm dot com changed:
What |Removed |Added
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CC| |eres at il dot ibm dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25621