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/* Unit tests for GIMPLE range related routines.
Copyright (C) 2021-2023 Free Software Foundation, Inc.
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 3, 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 COPYING3. If not see
<http://www.gnu.org/licenses/>. */
#if CHECKING_P
#include "selftest.h"
namespace selftest {
// Test ranges of tree expressions.
class test_expr_eval : public gimple_ranger
{
public:
test_expr_eval ()
{
type = integer_type_node;
op0 = make_ssa_name (type);
op1 = make_ssa_name (type);
// [5,10] + [15,20] => [20, 30]
tree expr = fold_build2 (PLUS_EXPR, type, op0, op1);
int_range<1> expect (type,
wi::shwi (20, TYPE_PRECISION (type)),
wi::shwi (30, TYPE_PRECISION (type)));
int_range_max r;
ASSERT_TRUE (range_of_expr (r, expr));
ASSERT_TRUE (r == expect);
}
virtual bool range_of_expr (vrange &v, tree expr, gimple * = NULL) override
{
irange &r = as_a <irange> (v);
unsigned prec = TYPE_PRECISION (type);
if (expr == op0)
{
r.set (type, wi::shwi (5, prec), wi::shwi (10, prec));
return true;
}
if (expr == op1)
{
r.set (type, wi::shwi (15, prec), wi::shwi (20, prec));
return true;
}
return gimple_ranger::range_of_expr (r, expr);
}
private:
tree op0, op1, type;
};
void
gimple_range_tests ()
{
test_expr_eval e;
}
} // namespace selftest
#endif // CHECKING_P
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