r274749 - in /trunk/gcc: ChangeLog testsuite/Ch...

[mbelivea@gcc.gnu.org]

Author: mbelivea
Date: Tue Aug 20 13:23:01 2019
New Revision: 274749

URL: https://gcc.gnu.org/viewcvs?rev=274749&root=gcc&view=rev
Log:
2019-08-19  Matthew Beliveau  <mbelivea@redhat.com>

	* tree-ssa-dse.c (dse_optimize_redundant_stores): Improved check to
	catch more redundant zero initialization cases.
	(dse_dom_walker::dse_optimize_stmt): Likewise.

Added:
    trunk/gcc/testsuite/gcc.dg/tree-ssa/redundant-assign-zero-1.c
    trunk/gcc/testsuite/gcc.dg/tree-ssa/redundant-assign-zero-2.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-dse.c