r244045 - in /trunk/gcc: ChangeLog testsuite/Ch...

[law@gcc.gnu.org]

Author: law
Date: Wed Jan  4 05:31:23 2017
New Revision: 244045

URL: https://gcc.gnu.org/viewcvs?rev=244045&root=gcc&view=rev
Log:
	PR tree-optimizatin/78856
	* tree-ssa-threadupdate.c: Include tree-vectorizer.h.
	(mark_threaded_blocks): Remove code to truncate thread paths that
	cross multiple loop headers.  Instead invalidate the cached loop
	iteration information and handle case of a thread path walking
	into an irreducible region.

	PR tree-optimization/78856
	* gcc.c-torture/execute/pr78856.c: New test.

Added:
    trunk/gcc/testsuite/gcc.c-torture/execute/pr78856.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-threadupdate.c