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[Bug fortran/37536] [4.3/4.4 Regression] a mfcr is produced instead of branches for DO loops
- From: "jakub at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 16 Sep 2008 13:02:53 -0000
- Subject: [Bug fortran/37536] [4.3/4.4 Regression] a mfcr is produced instead of branches for DO loops
- References: <bug-37536-6528@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #3 from jakub at gcc dot gnu dot org 2008-09-16 13:02 -------
Created an attachment (id=16338)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=16338&action=view)
gcc44-pr37536.patch
So far untested patch to optimize slightly integer type non-simple do loops.
At least on x86_64 it results in smaller and hopefully faster code.
Still testing it with make check-gfortran, but will probably need a SPEC
testing too.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37536