r255356 - in /trunk/gcc: ChangeLog gimple-ssa-s...

[jakub@gcc.gnu.org]

Author: jakub
Date: Sat Dec  2 07:58:57 2017
New Revision: 255356

URL: https://gcc.gnu.org/viewcvs?rev=255356&root=gcc&view=rev
Log:
	PR tree-optimization/83170
	PR tree-optimization/83241
	* gimple-ssa-store-merging.c
	(imm_store_chain_info::try_coalesce_bswap): Update vuse field from
	gimple_vuse (ins_stmt) in case it has changed.
	(imm_store_chain_info::output_merged_store): Likewise.

	* gcc.dg/store_merging_17.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/store_merging_17.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/gimple-ssa-store-merging.c
    trunk/gcc/testsuite/ChangeLog