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[2/8] Add pass_oacc_kernels

Message ID 5474672F.8000303@mentor.com
State New
Headers show

Commit Message

Tom de Vries Nov. 25, 2014, 11:25 a.m. UTC 
On 15-11-14 18:20, Tom de Vries wrote:
> On 15-11-14 13:14, Tom de Vries wrote:
>> Hi,
>>
>> I'm submitting a patch series with initial support for the oacc kernels
>> directive.
>>
>> The patch series uses pass_parallelize_loops to implement parallelization of
>> loops in the oacc kernels region.
>>
>> The patch series consists of these 8 patches:
>> ...
>>      1  Expand oacc kernels after pass_build_ealias
>>      2  Add pass_oacc_kernels
>>      3  Add pass_ch_oacc_kernels to pass_oacc_kernels
>>      4  Add pass_tree_loop_{init,done} to pass_oacc_kernels
>>      5  Add pass_loop_im to pass_oacc_kernels
>>      6  Add pass_ccp to pass_oacc_kernels
>>      7  Add pass_parloops_oacc_kernels to pass_oacc_kernels
>>      8  Do simple omp lowering for no address taken var
>> ...
>
> This patch adds a pass group pass_oacc_kernels.
>
> The rationale is that we want a pass group to run oacc kernels region related
> (optimization) passes in.
>

Updated for moving pass_oacc_kernels down past pass_fre in the pass list.

Bootstrapped and reg-tested as before.

OK for trunk?

Thanks,
   - Tom
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Patch

[PATCH 2/7] Add pass_oacc_kernels

2014-11-25  Tom de Vries  <tom@codesourcery.com>

	* passes.def: Add pass group pass_oacc_kernels.
	* tree-pass.h (make_pass_oacc_kernels): Declare.
	* tree-ssa-loop.c (gate_oacc_kernels): New static function.
	(pass_data_oacc_kernels): New pass_data.
	(class pass_oacc_kernels): New pass.
	(make_pass_oacc_kernels): New function.
---
 gcc/passes.def      |  7 ++++++-
 gcc/tree-pass.h     |  1 +
 gcc/tree-ssa-loop.c | 48 ++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 55 insertions(+), 1 deletion(-)

diff --git a/gcc/passes.def b/gcc/passes.def
index bf1cd34..efb3d8c 100644
--- a/gcc/passes.def
+++ b/gcc/passes.def
@@ -86,7 +86,12 @@  along with GCC; see the file COPYING3.  If not see
 	     execute TODO_rebuild_alias at this point.  */
 	  NEXT_PASS (pass_build_ealias);
 	  NEXT_PASS (pass_fre);
-	  NEXT_PASS (pass_expand_omp_ssa);
+	  /* Pass group that runs when there are oacc kernels in the
+	     function.  */
+	  NEXT_PASS (pass_oacc_kernels);
+	  PUSH_INSERT_PASSES_WITHIN (pass_oacc_kernels)
+	      NEXT_PASS (pass_expand_omp_ssa);
+	  POP_INSERT_PASSES ()
 	  NEXT_PASS (pass_merge_phi);
 	  NEXT_PASS (pass_cd_dce);
 	  NEXT_PASS (pass_early_ipa_sra);
diff --git a/gcc/tree-pass.h b/gcc/tree-pass.h
index 75f8aa5..d63ab2b 100644
--- a/gcc/tree-pass.h
+++ b/gcc/tree-pass.h
@@ -449,6 +449,7 @@  extern gimple_opt_pass *make_pass_strength_reduction (gcc::context *ctxt);
 extern gimple_opt_pass *make_pass_vtable_verify (gcc::context *ctxt);
 extern gimple_opt_pass *make_pass_ubsan (gcc::context *ctxt);
 extern gimple_opt_pass *make_pass_sanopt (gcc::context *ctxt);
+extern gimple_opt_pass *make_pass_oacc_kernels (gcc::context *ctxt);
 
 /* IPA Passes */
 extern simple_ipa_opt_pass *make_pass_ipa_lower_emutls (gcc::context *ctxt);
diff --git a/gcc/tree-ssa-loop.c b/gcc/tree-ssa-loop.c
index 758b5fc..c29aa22 100644
--- a/gcc/tree-ssa-loop.c
+++ b/gcc/tree-ssa-loop.c
@@ -157,6 +157,54 @@  make_pass_tree_loop (gcc::context *ctxt)
   return new pass_tree_loop (ctxt);
 }
 
+/* Gate for oacc kernels pass group.  */
+
+static bool
+gate_oacc_kernels (function *fn)
+{
+  if (!flag_openacc)
+    return false;
+
+  return fn->contains_oacc_kernels;
+}
+
+/* The oacc kernels superpass.  */
+
+namespace {
+
+const pass_data pass_data_oacc_kernels =
+{
+  GIMPLE_PASS, /* type */
+  "oacc_kernels", /* name */
+  OPTGROUP_LOOP, /* optinfo_flags */
+  TV_TREE_LOOP, /* tv_id */
+  PROP_cfg, /* properties_required */
+  0, /* properties_provided */
+  0, /* properties_destroyed */
+  0, /* todo_flags_start */
+  0, /* todo_flags_finish */
+};
+
+class pass_oacc_kernels : public gimple_opt_pass
+{
+public:
+  pass_oacc_kernels (gcc::context *ctxt)
+    : gimple_opt_pass (pass_data_oacc_kernels, ctxt)
+  {}
+
+  /* opt_pass methods: */
+  virtual bool gate (function *fn) { return gate_oacc_kernels (fn); }
+
+}; // class pass_oacc_kernels
+
+} // anon namespace
+
+gimple_opt_pass *
+make_pass_oacc_kernels (gcc::context *ctxt)
+{
+  return new pass_oacc_kernels (ctxt);
+}
+
 /* The no-loop superpass.  */
 
 namespace {
-- 
1.9.1