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Allow pass_parallelize_loops to be run outside the loop pipeline 

2016-01-18  Tom de Vries  <tom@codesourcery.com>

	* tree-parloops.c (pass_parallelize_loops::execute): Allow
	pass_parallelize_loops to be run outside the loop pipeline.

From-SVN: r232511
This commit is contained in:
Tom de Vries 2016-01-18 12:52:23 +00:00 committed by Tom de Vries
parent da976fa899
commit 12db081402
2 changed files with 28 additions and 5 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2016-01-18 Tom de Vries <tom@codesourcery.com>
* tree-parloops.c (pass_parallelize_loops::execute): Allow
pass_parallelize_loops to be run outside the loop pipeline.
2016-01-18 Alan Lawrence <alan.lawrence@arm.com>
* tree-scalar-evolution.c (follow_copies_to_constant): New.

28
gcc/tree-parloops.c
View File

@ -2844,23 +2844,41 @@ public:
unsigned
pass_parallelize_loops::execute (function *fun)
{
if (number_of_loops (fun) <= 1)
return 0;
tree nthreads = builtin_decl_explicit (BUILT_IN_OMP_GET_NUM_THREADS);
if (nthreads == NULL_TREE)
return 0;
bool in_loop_pipeline = scev_initialized_p ();
if (!in_loop_pipeline)
loop_optimizer_init (LOOPS_NORMAL
| LOOPS_HAVE_RECORDED_EXITS);
if (number_of_loops (fun) <= 1)
return 0;
if (!in_loop_pipeline)
{
rewrite_into_loop_closed_ssa (NULL, TODO_update_ssa);
scev_initialize ();
}
unsigned int todo = 0;
if (parallelize_loops ())
{
fun->curr_properties &= ~(PROP_gimple_eomp);
checking_verify_loop_structure ();
return TODO_update_ssa;
todo |= TODO_update_ssa;
}
return 0;
if (!in_loop_pipeline)
{
scev_finalize ();
loop_optimizer_finalize ();
}
return todo;
}
} // anon namespace