r217260 - in /trunk/gcc: ChangeLog fold-const.c...

[rguenth@gcc.gnu.org]

Author: rguenth
Date: Sun Nov  9 11:27:00 2014
New Revision: 217260

URL: https://gcc.gnu.org/viewcvs?rev=217260&root=gcc&view=rev
Log:
2014-11-09  Richard Biener  <rguenther@suse.de>

	* match.pd: Add patterns convering two conversions in a row
	from fold-const.c.
	* fold-const.c (fold_unary_loc): Remove them here.
	* tree-ssa-forwprop.c (combine_conversions): Likewise.
	* genmatch.c (dt_node::gen_kids): Check whether we may
	follow SSA use-def chains.

	* g++.dg/cpp0x/constexpr-reinterpret1.C: XFAIL.
	* gcc.dg/tree-ssa/pr21031.c: XFAIL.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/fold-const.c
    trunk/gcc/genmatch.c
    trunk/gcc/match.pd
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/g++.dg/cpp0x/constexpr-reinterpret1.C
    trunk/gcc/testsuite/gcc.dg/tree-ssa/pr21031.c
    trunk/gcc/tree-ssa-forwprop.c