r278963 - in /trunk/gcc: ChangeLog testsuite/Ch...

[rguenth@gcc.gnu.org]

Author: rguenth
Date: Wed Dec  4 12:23:58 2019
New Revision: 278963

URL: https://gcc.gnu.org/viewcvs?rev=278963&root=gcc&view=rev
Log:
2019-12-04  Richard Biener  <rguenther@suse.de>

	* tree-ssa-sccvn.c (vn_walk_cb_data::push_partial_def): Handle
	non-constant defs in the most trivial way.
	(vn_reference_lookup_3): Also push down SSA partial defs.

	* gcc.dg/tree-ssa/ssa-fre-84.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-84.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-sccvn.c