r226279 - in /branches/gomp-4_0-branch/gcc: Cha...

[vries@gcc.gnu.org]

Author: vries
Date: Mon Jul 27 23:44:43 2015
New Revision: 226279

URL: https://gcc.gnu.org/viewcvs?rev=226279&root=gcc&view=rev
Log:
Don't cancel loop tree in parloops

2015-07-28  Tom de Vries  <tom@codesourcery.com>

	PR tree-optimization/66846
	* omp-low.c (expand_omp_taskreg) [ENABLE_CHECKING]: Call
	verify_loop_structure for child_cfun if !LOOPS_NEED_FIXUP.
	(expand_omp_target) [ENABLE_CHECKING]: Same.
	(execute_expand_omp): Reinstate LOOPS_HAVE_SIMPLE_LATCHES if in ssa.
	[ENABLE_CHECKING]: Call verify_loop_structure for cfun if
	!LOOPS_NEED_FIXUP.
	(expand_omp_for_static_nochunk): Handle case that omp_for already has
	its own loop struct.
	* tree-parloops.c (create_parallel_loop): Add comment about breaking
	LOOPS_HAVE_SIMPLE_LATCHES.  Record new exit.
	(gen_parallel_loop): Remove call to cancel_loop_tree.
	(parallelize_loops): Skip loops that are inner loops of parallelized
	loops.
	(pass_parallelize_loops::execute): Clear LOOPS_HAVE_SIMPLE_LATCHES on
	loop state.
	[ENABLE_CHECKING]: Call verify_loop_structure.

Modified:
    branches/gomp-4_0-branch/gcc/ChangeLog.gomp
    branches/gomp-4_0-branch/gcc/omp-low.c
    branches/gomp-4_0-branch/gcc/tree-parloops.c