[Bug target/34163] [4.3/4.4/4.5 Regression] 10% performance regression since Nov 1 on Polyhedron's "NF" on AMD64
rguenth at gcc dot gnu dot org
gcc-bugzilla@gcc.gnu.org
Fri Jul 3 14:11:00 GMT 2009
------- Comment #22 from rguenth at gcc dot gnu dot org 2009-07-03 14:11 -------
Subject: Bug 34163
Author: rguenth
Date: Fri Jul 3 14:11:14 2009
New Revision: 149207
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=149207
Log:
2009-07-03 Richard Guenther <rguenther@suse.de>
PR middle-end/34163
* tree-chrec.c (chrec_convert_1): Fold (T2)(t +- x) to
(T2)t +- (T2)x if t +- x is known to not overflow and
the conversion widens the operation.
* Makefile.in (tree-chrec.o): Add $(FLAGS_H) dependency.
* gfortran.dg/pr34163.f90: New testcase.
Added:
trunk/gcc/testsuite/gfortran.dg/pr34163.f90
Modified:
trunk/gcc/ChangeLog
trunk/gcc/Makefile.in
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-chrec.c
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34163
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