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[Bug rtl-optimization/46804] [4.5/4.6 Regression] gfortran.dg/char_cshift_2.f90 FAILs with -fregmove
- From: "jakub at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Fri, 10 Dec 2010 16:41:00 +0000
- Subject: [Bug rtl-optimization/46804] [4.5/4.6 Regression] gfortran.dg/char_cshift_2.f90 FAILs with -fregmove
- Auto-submitted: auto-generated
- References: <bug-46804-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46804
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> 2010-12-10 16:40:57 UTC ---
Author: jakub
Date: Fri Dec 10 16:40:51 2010
New Revision: 167695
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=167695
Log:
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:
trunk/gcc/testsuite/gfortran.dg/pr46804.f90
Modified:
trunk/gcc/ChangeLog
trunk/gcc/regmove.c
trunk/gcc/testsuite/ChangeLog