r235444 - in /trunk/gcc: ChangeLog fold-const.c...

[glisse@gcc.gnu.org]

Author: glisse
Date: Tue Apr 26 14:02:09 2016
New Revision: 235444

URL: https://gcc.gnu.org/viewcvs?rev=235444&root=gcc&view=rev
Log:
match.pd: X + X --> X * 2 for integers

2016-04-26  Marc Glisse  <marc.glisse@inria.fr>

gcc/
	* genmatch.c (write_predicate): Add ATTRIBUTE_UNUSED.
	* fold-const.c (fold_binary_loc): Remove 2 transformations
	superseded by match.pd.
	* match.pd (x+x -> x*2): Generalize to integers.

gcc/testsuite/
	* gcc.dg/fold-plusmult.c: Adjust.
	* gcc.dg/no-strict-overflow-6.c: Adjust.
	* gcc.dg/gomp/loop-1.c: Xfail some tests.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/fold-const.c
    trunk/gcc/genmatch.c
    trunk/gcc/match.pd
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.dg/fold-plusmult.c
    trunk/gcc/testsuite/gcc.dg/gomp/loop-1.c
    trunk/gcc/testsuite/gcc.dg/no-strict-overflow-6.c