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/* Scalar evolution detector.
Copyright (C) 2003, 2004 Free Software Foundation, Inc.
Contributed by Sebastian Pop <s.pop@laposte.net>
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 2, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to the Free
Software Foundation, 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA. */
#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "tm.h"
#include "errors.h"
#include "ggc.h"
#include "tree.h"
#include "rtl.h"
#include "basic-block.h"
#include "diagnostic.h"
#include "tree-flow.h"
#include "tree-dump.h"
#include "timevar.h"
#include "cfgloop.h"
#include "tree-chrec.h"
#include "tree-scalar-evolution.h"
/* Analyze all the parameters of the chrec that were left under a
symbolic form. LOOP is the loop in which symbolic names have to
be analyzed and instantiated. */
tree
instantiate_parameters (struct loop *loop ATTRIBUTE_UNUSED,
tree chrec)
{
/* Just a dummy definition for now. */
return chrec;
}
/* Checks whether OP behaves as a simple affine iv of LOOP in STMT and returns
its BASE and STEP if possible. */
bool
simple_iv (struct loop *loop ATTRIBUTE_UNUSED, tree stmt ATTRIBUTE_UNUSED,
tree op ATTRIBUTE_UNUSED, tree *base ATTRIBUTE_UNUSED,
tree *step ATTRIBUTE_UNUSED)
{
/* Just a dummy definition for now. */
return false;
}
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