r195475 - in /trunk/gcc: ChangeLog testsuite/Ch...

[jakub@gcc.gnu.org]

Author: jakub
Date: Fri Jan 25 20:03:54 2013
New Revision: 195475

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=195475
Log:
	PR tree-optimization/56098
	* tree-ssa-phiopt.c (nt_init_block): Don't call add_or_mark_expr
	for stmts with volatile ops.
	(cond_store_replacement): Don't optimize if assign has volatile ops.
	(cond_if_else_store_replacement_1): Don't optimize if either
	then_assign or else_assign have volatile ops.
	(hoist_adjacent_loads): Don't optimize if either def1 or def2 have
	volatile ops.

	* gcc.dg/pr56098-1.c: New test.
	* gcc.dg/pr56098-2.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/pr56098-1.c
    trunk/gcc/testsuite/gcc.dg/pr56098-2.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-phiopt.c