r269838 - in /trunk/gcc: ChangeLog fold-const.c...

[rguenth@gcc.gnu.org]

Author: rguenth
Date: Thu Mar 21 14:27:32 2019
New Revision: 269838

URL: https://gcc.gnu.org/viewcvs?rev=269838&root=gcc&view=rev
Log:
2019-03-21  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/89779
	* tree.c (tree_nop_conversion): Consolidate and fix defensive
	checks with respect to released SSA names now having error_mark_node
	type.
	* fold-const.c (operand_equal_p): Likewise.

	* gcc.dg/torture/pr89779.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr89779.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/fold-const.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree.c