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r168863 - in /branches/gcc-4_5-branch/gcc: Chan...
- From: jakub at gcc dot gnu dot org
- To: gcc-cvs at gcc dot gnu dot org
- Date: Sun, 16 Jan 2011 20:16:31 -0000
- Subject: r168863 - in /branches/gcc-4_5-branch/gcc: Chan...
Author: jakub
Date: Sun Jan 16 20:16:30 2011
New Revision: 168863
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=168863
Log:
Backport from mainline
2010-12-10 Jakub Jelinek <jakub@redhat.com>
PR rtl-optimization/46804
* regmove.c (optimize_reg_copy_3): Look for REG_EQUAL note
on the setter of src_reg rather than on insn. If it is
equal to the setter's original SET_SRC, replace it with its
zero or sign extension instead of dropping it.
* gfortran.dg/pr46804.f90: New test.
Added:
branches/gcc-4_5-branch/gcc/testsuite/gfortran.dg/pr46804.f90
Modified:
branches/gcc-4_5-branch/gcc/ChangeLog
branches/gcc-4_5-branch/gcc/regmove.c
branches/gcc-4_5-branch/gcc/testsuite/ChangeLog