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[Bug fortran/44773] [4.6 Regression] Unnecessary temporaries increase the runtime for channel.f90 by ~70%
- From: "pault at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 10 Jul 2010 17:09:03 -0000
- Subject: [Bug fortran/44773] [4.6 Regression] Unnecessary temporaries increase the runtime for channel.f90 by ~70%
- References: <bug-44773-12313@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #18 from pault at gcc dot gnu dot org 2010-07-10 17:09 -------
Subject: Bug 44773
Author: pault
Date: Sat Jul 10 17:08:48 2010
New Revision: 162041
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=162041
Log:
2010-07-10 Paul Thomas <pault@gcc.gnu.org>
PR fortran/44582
* trans-expr.c (arrayfunc_assign_needs_temporary): New function
to determine if a function assignment can be made without a
temporary.
(gfc_trans_arrayfunc_assign): Move all the conditions that
suppress the direct function call to the above new functon and
call it.
PR fortran/44773
* trans-expr.c (arrayfunc_assign_needs_temporary): No temporary
if the lhs has never been host associated, as well as not being
use associated, a pointer or a target.
* resolve.c (resolve_variable): Mark variables that are host
associated.
* gfortran.h: Add the host_assoc bit to the symbol_attribute
structure.
2010-07-10 Paul Thomas <pault@gcc.gnu.org>
PR fortran/44582
* gfortran.dg/aliasing_array_result_1.f90 : New test.
Added:
branches/gcc-4_4-branch/gcc/testsuite/gfortran.dg/aliasing_array_result_1.f90
Modified:
branches/gcc-4_4-branch/gcc/fortran/ChangeLog
branches/gcc-4_4-branch/gcc/fortran/gfortran.h
branches/gcc-4_4-branch/gcc/fortran/resolve.c
branches/gcc-4_4-branch/gcc/fortran/trans-expr.c
branches/gcc-4_4-branch/gcc/testsuite/ChangeLog
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44773