r254628 - in /trunk/gcc: ChangeLog gimple-ssa-s...

[jakub@gcc.gnu.org]

Author: jakub
Date: Fri Nov 10 14:43:13 2017
New Revision: 254628

URL: https://gcc.gnu.org/viewcvs?rev=254628&root=gcc&view=rev
Log:
	PR tree-optimization/82929
	* gimple-ssa-store-merging.c (struct store_immediate_info): Add
	ops_swapped_p non-static data member.
	(store_immediate_info::store_immediate_info): Clear it.
	(imm_store_chain_info::coalesce_immediate_stores): If swapping
	ops set ops_swapped_p.
	(count_multiple_uses): Handle ops_swapped_p.

	* gcc.dg/pr82929.c: New test.
	* g++.dg/opt/pr82929.C: New test.

Added:
    trunk/gcc/testsuite/g++.dg/opt/pr82929.C
    trunk/gcc/testsuite/gcc.dg/pr82929.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/gimple-ssa-store-merging.c
    trunk/gcc/testsuite/ChangeLog