Add AutoFDO.

gcc/ChangeLog:

2014-10-21  Dehao Chen  <dehao@google.com>

	* auto-profile.c: New file.
	* auto-profile.h: New file.
	* basic-block.h (maybe_hot_count_p): New export func.
	(add_working_set): New export func.
	* gcov-io.h (GCOV_TAG_AFDO_FILE_NAMES): New tag.
	(GCOV_TAG_AFDO_FUNCTION): Likewise.
	(GCOV_TAG_AFDO_WORKING_SET): Likewise.
	* opts.c (enable_fdo_optimizations): New func.
	(common_handle_option): Handle -fauto-profile flag.
	* ipa-inline.c (want_early_inline_function_p): Iterative-einline.
	(class pass_early_inline): Export early_inliner.
	(early_inliner): Likewise.
	(pass_early_inline::execute): Likewise.
	* ipa-inline.h (early_inliner): Likewise.
	* predict.c (maybe_hot_count_p): New export func.
	(counts_to_freqs): AutoFDO logic.
	(rebuild_frequencies): Likewise.
	* tree-profile.c (pass_ipa_tree_profile::gate): Likewise.
	* profile.c (add_working_set): New func.
	* Makefile.in (auto-profile.o): New object file.
	* passes.def (pass_ipa_auto_profile): New pass.
	* tree-ssa-live.c (remove_unused_scope_block_p): AutoFDO logic.
	* tree-pass.h (make_pass_ipa_auto_profile): New pass.
	* toplev.c (compile_file): AutoFDO logic.
	* doc/invoke.texi (-fauto-profile): New doc.
	* coverage.c (coverage_init): AutoFDO logic.
	* common.opt (-fauto-profile): New flag.
	* timevar.def (TV_IPA_AUTOFDO): New tag.
	* value-prof.c (gimple_alloc_histogram_value): New export func.
	(check_ic_target): Likewise.
	* value-prof.h (gimple_alloc_histogram_value): Likewise.
	(check_ic_target): Likewise.

From-SVN: r216523

1 files changed, 62 insertions, 38 deletions

diff --git a/gcc/opts.c b/gcc/opts.c
index 3054196..de066bc 100644
--- a/gcc/opts.c
+++ b/gcc/opts.c
@@ -1280,6 +1280,50 @@ print_specific_help (unsigned int include_flags,
 		       opts->x_help_columns, opts, lang_mask);
 }
 
+/* Enable FDO-related flags.  */
+
+static void
+enable_fdo_optimizations (struct gcc_options *opts,
+			  struct gcc_options *opts_set,
+			  int value)
+{
+  if (!opts_set->x_flag_branch_probabilities)
+    opts->x_flag_branch_probabilities = value;
+  if (!opts_set->x_flag_profile_values)
+    opts->x_flag_profile_values = value;
+  if (!opts_set->x_flag_unroll_loops)
+    opts->x_flag_unroll_loops = value;
+  if (!opts_set->x_flag_peel_loops)
+    opts->x_flag_peel_loops = value;
+  if (!opts_set->x_flag_tracer)
+    opts->x_flag_tracer = value;
+  if (!opts_set->x_flag_value_profile_transformations)
+    opts->x_flag_value_profile_transformations = value;
+  if (!opts_set->x_flag_inline_functions)
+    opts->x_flag_inline_functions = value;
+  if (!opts_set->x_flag_ipa_cp)
+    opts->x_flag_ipa_cp = value;
+  if (!opts_set->x_flag_ipa_cp_clone
+      && value && opts->x_flag_ipa_cp)
+    opts->x_flag_ipa_cp_clone = value;
+  if (!opts_set->x_flag_predictive_commoning)
+    opts->x_flag_predictive_commoning = value;
+  if (!opts_set->x_flag_unswitch_loops)
+    opts->x_flag_unswitch_loops = value;
+  if (!opts_set->x_flag_gcse_after_reload)
+    opts->x_flag_gcse_after_reload = value;
+  if (!opts_set->x_flag_tree_loop_vectorize
+      && !opts_set->x_flag_tree_vectorize)
+    opts->x_flag_tree_loop_vectorize = value;
+  if (!opts_set->x_flag_tree_slp_vectorize
+      && !opts_set->x_flag_tree_vectorize)
+    opts->x_flag_tree_slp_vectorize = value;
+  if (!opts_set->x_flag_vect_cost_model)
+    opts->x_flag_vect_cost_model = VECT_COST_MODEL_DYNAMIC;
+  if (!opts_set->x_flag_tree_loop_distribute_patterns)
+    opts->x_flag_tree_loop_distribute_patterns = value;
+}
+
 /* Handle target- and language-independent options.  Return zero to
    generate an "unknown option" message.  Only options that need
    extra handling need to be listed here; if you simply want
@@ -1749,50 +1793,30 @@ common_handle_option (struct gcc_options *opts,
       value = true;
       /* No break here - do -fprofile-use processing. */
     case OPT_fprofile_use:
-      if (!opts_set->x_flag_branch_probabilities)
-	opts->x_flag_branch_probabilities = value;
-      if (!opts_set->x_flag_profile_values)
-	opts->x_flag_profile_values = value;
-      if (!opts_set->x_flag_unroll_loops)
-	opts->x_flag_unroll_loops = value;
-      if (!opts_set->x_flag_peel_loops)
-	opts->x_flag_peel_loops = value;
-      if (!opts_set->x_flag_tracer)
-	opts->x_flag_tracer = value;
-      if (!opts_set->x_flag_value_profile_transformations)
-	opts->x_flag_value_profile_transformations = value;
-      if (!opts_set->x_flag_inline_functions)
-	opts->x_flag_inline_functions = value;
-      if (!opts_set->x_flag_ipa_cp)
-	opts->x_flag_ipa_cp = value;
-      if (!opts_set->x_flag_ipa_cp_clone
-	  && value && opts->x_flag_ipa_cp)
-	opts->x_flag_ipa_cp_clone = value;
-      if (!opts_set->x_flag_predictive_commoning)
-	opts->x_flag_predictive_commoning = value;
-      if (!opts_set->x_flag_unswitch_loops)
-	opts->x_flag_unswitch_loops = value;
-      if (!opts_set->x_flag_gcse_after_reload)
-	opts->x_flag_gcse_after_reload = value;
-      if (!opts_set->x_flag_tree_loop_vectorize
-          && !opts_set->x_flag_tree_vectorize)
-	opts->x_flag_tree_loop_vectorize = value;
-      if (!opts_set->x_flag_tree_slp_vectorize
-          && !opts_set->x_flag_tree_vectorize)
-	opts->x_flag_tree_slp_vectorize = value;
-      if (!opts_set->x_flag_vect_cost_model)
-	opts->x_flag_vect_cost_model = VECT_COST_MODEL_DYNAMIC;
-      if (!opts_set->x_flag_tree_loop_distribute_patterns)
-	opts->x_flag_tree_loop_distribute_patterns = value;
+      enable_fdo_optimizations (opts, opts_set, value);
       if (!opts_set->x_flag_profile_reorder_functions)
-	opts->x_flag_profile_reorder_functions = value;
-      /* Indirect call profiling should do all useful transformations
- 	 speculative devirtualization does.  */
+	  opts->x_flag_profile_reorder_functions = value;
+	/* Indirect call profiling should do all useful transformations
+	   speculative devirtualization does.  */
       if (!opts_set->x_flag_devirtualize_speculatively
 	  && opts->x_flag_value_profile_transformations)
 	opts->x_flag_devirtualize_speculatively = false;
       break;
 
+    case OPT_fauto_profile_:
+      opts->x_auto_profile_file = xstrdup (arg);
+      opts->x_flag_auto_profile = true;
+      value = true;
+      /* No break here - do -fauto-profile processing. */
+    case OPT_fauto_profile:
+      enable_fdo_optimizations (opts, opts_set, value);
+      if (!opts_set->x_flag_profile_correction)
+	opts->x_flag_profile_correction = value;
+      maybe_set_param_value (
+	PARAM_EARLY_INLINER_MAX_ITERATIONS, 10,
+	opts->x_param_values, opts_set->x_param_values);
+      break;
+
     case OPT_fprofile_generate_:
       opts->x_profile_data_prefix = xstrdup (arg);
       value = true;