r225521 - in /trunk: gcc/ChangeLog gcc/tree-par...

[vries@gcc.gnu.org]

Author: vries
Date: Tue Jul  7 16:25:22 2015
New Revision: 225521

URL: https://gcc.gnu.org/viewcvs?rev=225521&root=gcc&view=rev
Log:
Add empty loop exit block in transform_to_exit_first_loop_alt

2015-07-07  Tom de Vries  <tom@codesourcery.com>

	PR tree-optimization/66642
	* tree-parloops.c (transform_to_exit_first_loop_alt): Update function
	header comment.  Rename split_edge variable to edge_at_split.  Split
	exit edge to create new loop exit bb.  Insert loop exit phis in new loop
	exit bb.

	* testsuite/libgomp.c/parloops-exit-first-loop-alt-3.c (main): Test low
	iteration count case.
	* testsuite/libgomp.c/parloops-exit-first-loop-alt.c (init): New
	function, factor out of ...
	(main): ... here.  Test low iteration count case.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/tree-parloops.c
    trunk/libgomp/ChangeLog
    trunk/libgomp/testsuite/libgomp.c/parloops-exit-first-loop-alt-3.c
    trunk/libgomp/testsuite/libgomp.c/parloops-exit-first-loop-alt.c