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.
---
gcc/tree-parloops.c | 28 +++++++++++++++++++++++-----
1 file changed, 23 insertions(+), 5 deletions(-)
@@ -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;
+ }
+
+ if (!in_loop_pipeline)
+ {
+ scev_finalize ();
+ loop_optimizer_finalize ();
}
- return 0;
+ return todo;
}
} // anon namespace
[ was: Re: [PIING][PATCH, 9/16] Add pass_parallelize_loops_oacc_kernels ] On 14/12/15 16:22, Richard Biener wrote: > Can the pass not just use a pass parameter to switch between oacc/non-oacc? It can, and that means that parloops is run outside the loops pipeline. This patch enables that. Bootstrapped and reg-tested on x86_64. Committed to trunk. Thanks, - Tom