--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/ipa-fnsummary.c	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,3610 @@
+/* Function summary pass.
+   Copyright (C) 2003-2017 Free Software Foundation, Inc.
+   Contributed by Jan Hubicka
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+/* Analysis of function bodies used by inter-procedural passes
+
+   We estimate for each function
+     - function body size and size after specializing into given context
+     - average function execution time in a given context
+     - function frame size
+   For each call
+     - call statement size, time and how often the parameters change
+
+   ipa_fn_summary data structures store above information locally (i.e.
+   parameters of the function itself) and globally (i.e. parameters of
+   the function created by applying all the inline decisions already
+   present in the callgraph).
+
+   We provide access to the ipa_fn_summary data structure and
+   basic logic updating the parameters when inlining is performed. 
+
+   The summaries are context sensitive.  Context means
+     1) partial assignment of known constant values of operands
+     2) whether function is inlined into the call or not.
+   It is easy to add more variants.  To represent function size and time
+   that depends on context (i.e. it is known to be optimized away when
+   context is known either by inlining or from IP-CP and cloning),
+   we use predicates.
+
+   estimate_edge_size_and_time can be used to query
+   function size/time in the given context.  ipa_merge_fn_summary_after_inlining merges
+   properties of caller and callee after inlining.
+
+   Finally pass_inline_parameters is exported.  This is used to drive
+   computation of function parameters used by the early inliner. IPA
+   inlined performs analysis via its analyze_function method. */
+
+#include "config.h"
+#include "system.h"
+#include "coretypes.h"
+#include "backend.h"
+#include "tree.h"
+#include "gimple.h"
+#include "alloc-pool.h"
+#include "tree-pass.h"
+#include "ssa.h"
+#include "tree-streamer.h"
+#include "cgraph.h"
+#include "diagnostic.h"
+#include "fold-const.h"
+#include "print-tree.h"
+#include "tree-inline.h"
+#include "gimple-pretty-print.h"
+#include "params.h"
+#include "cfganal.h"
+#include "gimple-iterator.h"
+#include "tree-cfg.h"
+#include "tree-ssa-loop-niter.h"
+#include "tree-ssa-loop.h"
+#include "symbol-summary.h"
+#include "ipa-prop.h"
+#include "ipa-fnsummary.h"
+#include "cfgloop.h"
+#include "tree-scalar-evolution.h"
+#include "ipa-utils.h"
+#include "cilk.h"
+#include "cfgexpand.h"
+#include "gimplify.h"
+#include "stringpool.h"
+#include "attribs.h"
+
+/* Summaries.  */
+function_summary <ipa_fn_summary *> *ipa_fn_summaries;
+call_summary <ipa_call_summary *> *ipa_call_summaries;
+
+/* Edge predicates goes here.  */
+static object_allocator<predicate> edge_predicate_pool ("edge predicates");
+
+
+/* Dump IPA hints.  */
+void
+ipa_dump_hints (FILE *f, ipa_hints hints)
+{
+  if (!hints)
+    return;
+  fprintf (f, "IPA hints:");
+  if (hints & INLINE_HINT_indirect_call)
+    {
+      hints &= ~INLINE_HINT_indirect_call;
+      fprintf (f, " indirect_call");
+    }
+  if (hints & INLINE_HINT_loop_iterations)
+    {
+      hints &= ~INLINE_HINT_loop_iterations;
+      fprintf (f, " loop_iterations");
+    }
+  if (hints & INLINE_HINT_loop_stride)
+    {
+      hints &= ~INLINE_HINT_loop_stride;
+      fprintf (f, " loop_stride");
+    }
+  if (hints & INLINE_HINT_same_scc)
+    {
+      hints &= ~INLINE_HINT_same_scc;
+      fprintf (f, " same_scc");
+    }
+  if (hints & INLINE_HINT_in_scc)
+    {
+      hints &= ~INLINE_HINT_in_scc;
+      fprintf (f, " in_scc");
+    }
+  if (hints & INLINE_HINT_cross_module)
+    {
+      hints &= ~INLINE_HINT_cross_module;
+      fprintf (f, " cross_module");
+    }
+  if (hints & INLINE_HINT_declared_inline)
+    {
+      hints &= ~INLINE_HINT_declared_inline;
+      fprintf (f, " declared_inline");
+    }
+  if (hints & INLINE_HINT_array_index)
+    {
+      hints &= ~INLINE_HINT_array_index;
+      fprintf (f, " array_index");
+    }
+  if (hints & INLINE_HINT_known_hot)
+    {
+      hints &= ~INLINE_HINT_known_hot;
+      fprintf (f, " known_hot");
+    }
+  gcc_assert (!hints);
+}
+
+
+/* Record SIZE and TIME to SUMMARY.
+   The accounted code will be executed when EXEC_PRED is true.
+   When NONCONST_PRED is false the code will evaulate to constant and
+   will get optimized out in specialized clones of the function.   */
+
+void
+ipa_fn_summary::account_size_time (int size, sreal time,
+				   const predicate &exec_pred,
+				   const predicate &nonconst_pred_in)
+{
+  size_time_entry *e;
+  bool found = false;
+  int i;
+  predicate nonconst_pred;
+
+  if (exec_pred == false)
+    return;
+
+  nonconst_pred = nonconst_pred_in & exec_pred;
+
+  if (nonconst_pred == false)
+    return;
+
+  /* We need to create initial empty unconitional clause, but otherwie
+     we don't need to account empty times and sizes.  */
+  if (!size && time == 0 && size_time_table)
+    return;
+
+  gcc_assert (time >= 0);
+
+  for (i = 0; vec_safe_iterate (size_time_table, i, &e); i++)
+    if (e->exec_predicate == exec_pred
+	&& e->nonconst_predicate == nonconst_pred)
+      {
+	found = true;
+	break;
+      }
+  if (i == 256)
+    {
+      i = 0;
+      found = true;
+      e = &(*size_time_table)[0];
+      if (dump_file && (dump_flags & TDF_DETAILS))
+	fprintf (dump_file,
+		 "\t\tReached limit on number of entries, "
+		 "ignoring the predicate.");
+    }
+  if (dump_file && (dump_flags & TDF_DETAILS) && (time != 0 || size))
+    {
+      fprintf (dump_file,
+	       "\t\tAccounting size:%3.2f, time:%3.2f on %spredicate exec:",
+	       ((double) size) / ipa_fn_summary::size_scale,
+	       (time.to_double ()), found ? "" : "new ");
+      exec_pred.dump (dump_file, conds, 0);
+      if (exec_pred != nonconst_pred)
+	{
+          fprintf (dump_file, " nonconst:");
+          nonconst_pred.dump (dump_file, conds);
+	}
+      else
+        fprintf (dump_file, "\n");
+    }
+  if (!found)
+    {
+      struct size_time_entry new_entry;
+      new_entry.size = size;
+      new_entry.time = time;
+      new_entry.exec_predicate = exec_pred;
+      new_entry.nonconst_predicate = nonconst_pred;
+      vec_safe_push (size_time_table, new_entry);
+    }
+  else
+    {
+      e->size += size;
+      e->time += time;
+    }
+}
+
+/* We proved E to be unreachable, redirect it to __bultin_unreachable.  */
+
+static struct cgraph_edge *
+redirect_to_unreachable (struct cgraph_edge *e)
+{
+  struct cgraph_node *callee = !e->inline_failed ? e->callee : NULL;
+  struct cgraph_node *target = cgraph_node::get_create
+		      (builtin_decl_implicit (BUILT_IN_UNREACHABLE));
+
+  if (e->speculative)
+    e = e->resolve_speculation (target->decl);
+  else if (!e->callee)
+    e->make_direct (target);
+  else
+    e->redirect_callee (target);
+  struct ipa_call_summary *es = ipa_call_summaries->get (e);
+  e->inline_failed = CIF_UNREACHABLE;
+  e->frequency = 0;
+  e->count = profile_count::zero ();
+  es->call_stmt_size = 0;
+  es->call_stmt_time = 0;
+  if (callee)
+    callee->remove_symbol_and_inline_clones ();
+  return e;
+}
+
+/* Set predicate for edge E.  */
+
+static void
+edge_set_predicate (struct cgraph_edge *e, predicate *predicate)
+{
+  /* If the edge is determined to be never executed, redirect it
+     to BUILTIN_UNREACHABLE to make it clear to IPA passes the call will
+     be optimized out.  */
+  if (predicate && *predicate == false
+      /* When handling speculative edges, we need to do the redirection
+         just once.  Do it always on the direct edge, so we do not
+	 attempt to resolve speculation while duplicating the edge.  */
+      && (!e->speculative || e->callee))
+    e = redirect_to_unreachable (e);
+
+  struct ipa_call_summary *es = ipa_call_summaries->get (e);
+  if (predicate && *predicate != true)
+    {
+      if (!es->predicate)
+	es->predicate = edge_predicate_pool.allocate ();
+      *es->predicate = *predicate;
+    }
+  else
+    {
+      if (es->predicate)
+	edge_predicate_pool.remove (es->predicate);
+      es->predicate = NULL;
+    }
+}
+
+/* Set predicate for hint *P.  */
+
+static void
+set_hint_predicate (predicate **p, predicate new_predicate)
+{
+  if (new_predicate == false || new_predicate == true)
+    {
+      if (*p)
+	edge_predicate_pool.remove (*p);
+      *p = NULL;
+    }
+  else
+    {
+      if (!*p)
+	*p = edge_predicate_pool.allocate ();
+      **p = new_predicate;
+    }
+}
+
+
+/* Compute what conditions may or may not hold given invormation about
+   parameters.  RET_CLAUSE returns truths that may hold in a specialized copy,
+   whie RET_NONSPEC_CLAUSE returns truths that may hold in an nonspecialized
+   copy when called in a given context.  It is a bitmask of conditions. Bit
+   0 means that condition is known to be false, while bit 1 means that condition
+   may or may not be true.  These differs - for example NOT_INLINED condition
+   is always false in the second and also builtin_constant_p tests can not use
+   the fact that parameter is indeed a constant.
+
+   KNOWN_VALS is partial mapping of parameters of NODE to constant values.
+   KNOWN_AGGS is a vector of aggreggate jump functions for each parameter.
+   Return clause of possible truths. When INLINE_P is true, assume that we are
+   inlining.
+
+   ERROR_MARK means compile time invariant.  */
+
+static void
+evaluate_conditions_for_known_args (struct cgraph_node *node,
+				    bool inline_p,
+				    vec<tree> known_vals,
+				    vec<ipa_agg_jump_function_p>
+				    known_aggs,
+				    clause_t *ret_clause,
+				    clause_t *ret_nonspec_clause)
+{
+  clause_t clause = inline_p ? 0 : 1 << predicate::not_inlined_condition;
+  clause_t nonspec_clause = 1 << predicate::not_inlined_condition;
+  struct ipa_fn_summary *info = ipa_fn_summaries->get (node);
+  int i;
+  struct condition *c;
+
+  for (i = 0; vec_safe_iterate (info->conds, i, &c); i++)
+    {
+      tree val;
+      tree res;
+
+      /* We allow call stmt to have fewer arguments than the callee function
+         (especially for K&R style programs).  So bound check here (we assume
+         known_aggs vector, if non-NULL, has the same length as
+         known_vals).  */
+      gcc_checking_assert (!known_aggs.exists ()
+			   || (known_vals.length () == known_aggs.length ()));
+      if (c->operand_num >= (int) known_vals.length ())
+	{
+	  clause |= 1 << (i + predicate::first_dynamic_condition);
+	  nonspec_clause |= 1 << (i + predicate::first_dynamic_condition);
+	  continue;
+	}
+
+      if (c->agg_contents)
+	{
+	  struct ipa_agg_jump_function *agg;
+
+	  if (c->code == predicate::changed
+	      && !c->by_ref
+	      && (known_vals[c->operand_num] == error_mark_node))
+	    continue;
+
+	  if (known_aggs.exists ())
+	    {
+	      agg = known_aggs[c->operand_num];
+	      val = ipa_find_agg_cst_for_param (agg, known_vals[c->operand_num],
+						c->offset, c->by_ref);
+	    }
+	  else
+	    val = NULL_TREE;
+	}
+      else
+	{
+	  val = known_vals[c->operand_num];
+	  if (val == error_mark_node && c->code != predicate::changed)
+	    val = NULL_TREE;
+	}
+
+      if (!val)
+	{
+	  clause |= 1 << (i + predicate::first_dynamic_condition);
+	  nonspec_clause |= 1 << (i + predicate::first_dynamic_condition);
+	  continue;
+	}
+      if (c->code == predicate::changed)
+	{
+	  nonspec_clause |= 1 << (i + predicate::first_dynamic_condition);
+	  continue;
+	}
+
+      if (tree_to_shwi (TYPE_SIZE (TREE_TYPE (val))) != c->size)
+	{
+	  clause |= 1 << (i + predicate::first_dynamic_condition);
+	  nonspec_clause |= 1 << (i + predicate::first_dynamic_condition);
+	  continue;
+	}
+      if (c->code == predicate::is_not_constant)
+	{
+	  nonspec_clause |= 1 << (i + predicate::first_dynamic_condition);
+	  continue;
+	}
+
+      val = fold_unary (VIEW_CONVERT_EXPR, TREE_TYPE (c->val), val);
+      res = val
+	? fold_binary_to_constant (c->code, boolean_type_node, val, c->val)
+	: NULL;
+
+      if (res && integer_zerop (res))
+	continue;
+
+      clause |= 1 << (i + predicate::first_dynamic_condition);
+      nonspec_clause |= 1 << (i + predicate::first_dynamic_condition);
+    }
+  *ret_clause = clause;
+  if (ret_nonspec_clause)
+    *ret_nonspec_clause = nonspec_clause;
+}
+
+
+/* Work out what conditions might be true at invocation of E.  */
+
+void
+evaluate_properties_for_edge (struct cgraph_edge *e, bool inline_p,
+			      clause_t *clause_ptr,
+			      clause_t *nonspec_clause_ptr,
+			      vec<tree> *known_vals_ptr,
+			      vec<ipa_polymorphic_call_context>
+			      *known_contexts_ptr,
+			      vec<ipa_agg_jump_function_p> *known_aggs_ptr)
+{
+  struct cgraph_node *callee = e->callee->ultimate_alias_target ();
+  struct ipa_fn_summary *info = ipa_fn_summaries->get (callee);
+  vec<tree> known_vals = vNULL;
+  vec<ipa_agg_jump_function_p> known_aggs = vNULL;
+
+  if (clause_ptr)
+    *clause_ptr = inline_p ? 0 : 1 << predicate::not_inlined_condition;
+  if (known_vals_ptr)
+    known_vals_ptr->create (0);
+  if (known_contexts_ptr)
+    known_contexts_ptr->create (0);
+
+  if (ipa_node_params_sum
+      && !e->call_stmt_cannot_inline_p
+      && ((clause_ptr && info->conds) || known_vals_ptr || known_contexts_ptr))
+    {
+      struct ipa_node_params *parms_info;
+      struct ipa_edge_args *args = IPA_EDGE_REF (e);
+      struct ipa_call_summary *es = ipa_call_summaries->get (e);
+      int i, count = ipa_get_cs_argument_count (args);
+
+      if (e->caller->global.inlined_to)
+	parms_info = IPA_NODE_REF (e->caller->global.inlined_to);
+      else
+	parms_info = IPA_NODE_REF (e->caller);
+
+      if (count && (info->conds || known_vals_ptr))
+	known_vals.safe_grow_cleared (count);
+      if (count && (info->conds || known_aggs_ptr))
+	known_aggs.safe_grow_cleared (count);
+      if (count && known_contexts_ptr)
+	known_contexts_ptr->safe_grow_cleared (count);
+
+      for (i = 0; i < count; i++)
+	{
+	  struct ipa_jump_func *jf = ipa_get_ith_jump_func (args, i);
+	  tree cst = ipa_value_from_jfunc (parms_info, jf);
+
+	  if (!cst && e->call_stmt
+	      && i < (int)gimple_call_num_args (e->call_stmt))
+	    {
+	      cst = gimple_call_arg (e->call_stmt, i);
+	      if (!is_gimple_min_invariant (cst))
+		cst = NULL;
+	    }
+	  if (cst)
+	    {
+	      gcc_checking_assert (TREE_CODE (cst) != TREE_BINFO);
+	      if (known_vals.exists ())
+		known_vals[i] = cst;
+	    }
+	  else if (inline_p && !es->param[i].change_prob)
+	    known_vals[i] = error_mark_node;
+
+	  if (known_contexts_ptr)
+	    (*known_contexts_ptr)[i] = ipa_context_from_jfunc (parms_info, e,
+							       i, jf);
+	  /* TODO: When IPA-CP starts propagating and merging aggregate jump
+	     functions, use its knowledge of the caller too, just like the
+	     scalar case above.  */
+	  known_aggs[i] = &jf->agg;
+	}
+    }
+  else if (e->call_stmt && !e->call_stmt_cannot_inline_p
+	   && ((clause_ptr && info->conds) || known_vals_ptr))
+    {
+      int i, count = (int)gimple_call_num_args (e->call_stmt);
+
+      if (count && (info->conds || known_vals_ptr))
+	known_vals.safe_grow_cleared (count);
+      for (i = 0; i < count; i++)
+	{
+	  tree cst = gimple_call_arg (e->call_stmt, i);
+	  if (!is_gimple_min_invariant (cst))
+	    cst = NULL;
+	  if (cst)
+	    known_vals[i] = cst;
+	}
+    }
+
+  evaluate_conditions_for_known_args (callee, inline_p,
+				      known_vals, known_aggs, clause_ptr,
+				      nonspec_clause_ptr);
+
+  if (known_vals_ptr)
+    *known_vals_ptr = known_vals;
+  else
+    known_vals.release ();
+
+  if (known_aggs_ptr)
+    *known_aggs_ptr = known_aggs;
+  else
+    known_aggs.release ();
+}
+
+
+/* Allocate the function summary. */
+
+static void
+ipa_fn_summary_alloc (void)
+{
+  gcc_checking_assert (!ipa_fn_summaries);
+  ipa_fn_summaries = ipa_fn_summary_t::create_ggc (symtab);
+  ipa_call_summaries = new ipa_call_summary_t (symtab, false);
+}
+
+/* We are called multiple time for given function; clear
+   data from previous run so they are not cumulated.  */
+
+void
+ipa_call_summary::reset ()
+{
+  call_stmt_size = call_stmt_time = 0;
+  if (predicate)
+    edge_predicate_pool.remove (predicate);
+  predicate = NULL;
+  param.release ();
+}
+
+/* We are called multiple time for given function; clear
+   data from previous run so they are not cumulated.  */
+
+void
+ipa_fn_summary::reset (struct cgraph_node *node)
+{
+  struct cgraph_edge *e;
+
+  self_size = 0;
+  estimated_stack_size = 0;
+  estimated_self_stack_size = 0;
+  stack_frame_offset = 0;
+  size = 0;
+  time = 0;
+  growth = 0;
+  scc_no = 0;
+  if (loop_iterations)
+    {
+      edge_predicate_pool.remove (loop_iterations);
+      loop_iterations = NULL;
+    }
+  if (loop_stride)
+    {
+      edge_predicate_pool.remove (loop_stride);
+      loop_stride = NULL;
+    }
+  if (array_index)
+    {
+      edge_predicate_pool.remove (array_index);
+      array_index = NULL;
+    }
+  vec_free (conds);
+  vec_free (size_time_table);
+  for (e = node->callees; e; e = e->next_callee)
+    ipa_call_summaries->get (e)->reset ();
+  for (e = node->indirect_calls; e; e = e->next_callee)
+    ipa_call_summaries->get (e)->reset ();
+  fp_expressions = false;
+}
+
+/* Hook that is called by cgraph.c when a node is removed.  */
+
+void
+ipa_fn_summary_t::remove (cgraph_node *node, ipa_fn_summary *info)
+{
+  info->reset (node);
+}
+
+/* Same as remap_predicate_after_duplication but handle hint predicate *P.
+   Additionally care about allocating new memory slot for updated predicate
+   and set it to NULL when it becomes true or false (and thus uninteresting).
+ */
+
+static void
+remap_hint_predicate_after_duplication (predicate **p,
+					clause_t possible_truths)
+{
+  predicate new_predicate;
+
+  if (!*p)
+    return;
+
+  new_predicate = (*p)->remap_after_duplication (possible_truths);
+  /* We do not want to free previous predicate; it is used by node origin.  */
+  *p = NULL;
+  set_hint_predicate (p, new_predicate);
+}
+
+
+/* Hook that is called by cgraph.c when a node is duplicated.  */
+void
+ipa_fn_summary_t::duplicate (cgraph_node *src,
+			     cgraph_node *dst,
+			     ipa_fn_summary *,
+			     ipa_fn_summary *info)
+{
+  memcpy (info, ipa_fn_summaries->get (src), sizeof (ipa_fn_summary));
+  /* TODO: as an optimization, we may avoid copying conditions
+     that are known to be false or true.  */
+  info->conds = vec_safe_copy (info->conds);
+
+  /* When there are any replacements in the function body, see if we can figure
+     out that something was optimized out.  */
+  if (ipa_node_params_sum && dst->clone.tree_map)
+    {
+      vec<size_time_entry, va_gc> *entry = info->size_time_table;
+      /* Use SRC parm info since it may not be copied yet.  */
+      struct ipa_node_params *parms_info = IPA_NODE_REF (src);
+      vec<tree> known_vals = vNULL;
+      int count = ipa_get_param_count (parms_info);
+      int i, j;
+      clause_t possible_truths;
+      predicate true_pred = true;
+      size_time_entry *e;
+      int optimized_out_size = 0;
+      bool inlined_to_p = false;
+      struct cgraph_edge *edge, *next;
+
+      info->size_time_table = 0;
+      known_vals.safe_grow_cleared (count);
+      for (i = 0; i < count; i++)
+	{
+	  struct ipa_replace_map *r;
+
+	  for (j = 0; vec_safe_iterate (dst->clone.tree_map, j, &r); j++)
+	    {
+	      if (((!r->old_tree && r->parm_num == i)
+		   || (r->old_tree && r->old_tree == ipa_get_param (parms_info, i)))
+		   && r->replace_p && !r->ref_p)
+		{
+		  known_vals[i] = r->new_tree;
+		  break;
+		}
+	    }
+	}
+      evaluate_conditions_for_known_args (dst, false,
+					  known_vals,
+					  vNULL,
+					  &possible_truths,
+					  /* We are going to specialize,
+					     so ignore nonspec truths.  */
+					  NULL);
+      known_vals.release ();
+
+      info->account_size_time (0, 0, true_pred, true_pred);
+
+      /* Remap size_time vectors.
+         Simplify the predicate by prunning out alternatives that are known
+         to be false.
+         TODO: as on optimization, we can also eliminate conditions known
+         to be true.  */
+      for (i = 0; vec_safe_iterate (entry, i, &e); i++)
+	{
+	  predicate new_exec_pred;
+	  predicate new_nonconst_pred;
+	  new_exec_pred = e->exec_predicate.remap_after_duplication
+				 (possible_truths);
+	  new_nonconst_pred = e->nonconst_predicate.remap_after_duplication
+		  		 (possible_truths);
+	  if (new_exec_pred == false || new_nonconst_pred == false)
+	    optimized_out_size += e->size;
+	  else
+	    info->account_size_time (e->size, e->time, new_exec_pred,
+			             new_nonconst_pred);
+	}
+
+      /* Remap edge predicates with the same simplification as above.
+         Also copy constantness arrays.   */
+      for (edge = dst->callees; edge; edge = next)
+	{
+	  predicate new_predicate;
+	  struct ipa_call_summary *es = ipa_call_summaries->get (edge);
+	  next = edge->next_callee;
+
+	  if (!edge->inline_failed)
+	    inlined_to_p = true;
+	  if (!es->predicate)
+	    continue;
+	  new_predicate = es->predicate->remap_after_duplication
+	    (possible_truths);
+	  if (new_predicate == false && *es->predicate != false)
+	    optimized_out_size += es->call_stmt_size * ipa_fn_summary::size_scale;
+	  edge_set_predicate (edge, &new_predicate);
+	}
+
+      /* Remap indirect edge predicates with the same simplificaiton as above. 
+         Also copy constantness arrays.   */
+      for (edge = dst->indirect_calls; edge; edge = next)
+	{
+	  predicate new_predicate;
+	  struct ipa_call_summary *es = ipa_call_summaries->get (edge);
+	  next = edge->next_callee;
+
+	  gcc_checking_assert (edge->inline_failed);
+	  if (!es->predicate)
+	    continue;
+	  new_predicate = es->predicate->remap_after_duplication
+				 (possible_truths);
+	  if (new_predicate == false && *es->predicate != false)
+	    optimized_out_size += es->call_stmt_size * ipa_fn_summary::size_scale;
+	  edge_set_predicate (edge, &new_predicate);
+	}
+      remap_hint_predicate_after_duplication (&info->loop_iterations,
+					      possible_truths);
+      remap_hint_predicate_after_duplication (&info->loop_stride,
+					      possible_truths);
+      remap_hint_predicate_after_duplication (&info->array_index,
+					      possible_truths);
+
+      /* If inliner or someone after inliner will ever start producing
+         non-trivial clones, we will get trouble with lack of information
+         about updating self sizes, because size vectors already contains
+         sizes of the calees.  */
+      gcc_assert (!inlined_to_p || !optimized_out_size);
+    }
+  else
+    {
+      info->size_time_table = vec_safe_copy (info->size_time_table);
+      if (info->loop_iterations)
+	{
+	  predicate p = *info->loop_iterations;
+	  info->loop_iterations = NULL;
+	  set_hint_predicate (&info->loop_iterations, p);
+	}
+      if (info->loop_stride)
+	{
+	  predicate p = *info->loop_stride;
+	  info->loop_stride = NULL;
+	  set_hint_predicate (&info->loop_stride, p);
+	}
+      if (info->array_index)
+	{
+	  predicate p = *info->array_index;
+	  info->array_index = NULL;
+	  set_hint_predicate (&info->array_index, p);
+	}
+    }
+  if (!dst->global.inlined_to)
+    ipa_update_overall_fn_summary (dst);
+}
+
+
+/* Hook that is called by cgraph.c when a node is duplicated.  */
+
+void
+ipa_call_summary_t::duplicate (struct cgraph_edge *src,
+			       struct cgraph_edge *dst,
+			       struct ipa_call_summary *srcinfo,
+			       struct ipa_call_summary *info)
+{
+  *info = *srcinfo;
+  info->predicate = NULL;
+  edge_set_predicate (dst, srcinfo->predicate);
+  info->param = srcinfo->param.copy ();
+  if (!dst->indirect_unknown_callee && src->indirect_unknown_callee)
+    {
+      info->call_stmt_size -= (eni_size_weights.indirect_call_cost
+			       - eni_size_weights.call_cost);
+      info->call_stmt_time -= (eni_time_weights.indirect_call_cost
+			       - eni_time_weights.call_cost);
+    }
+}
+
+
+/* Keep edge cache consistent across edge removal.  */
+
+void
+ipa_call_summary_t::remove (struct cgraph_edge *,
+			    struct ipa_call_summary *sum)
+{
+  sum->reset ();
+}
+
+
+/* Dump edge summaries associated to NODE and recursively to all clones.
+   Indent by INDENT.  */
+
+static void
+dump_ipa_call_summary (FILE *f, int indent, struct cgraph_node *node,
+		       struct ipa_fn_summary *info)
+{
+  struct cgraph_edge *edge;
+  for (edge = node->callees; edge; edge = edge->next_callee)
+    {
+      struct ipa_call_summary *es = ipa_call_summaries->get (edge);
+      struct cgraph_node *callee = edge->callee->ultimate_alias_target ();
+      int i;
+
+      fprintf (f,
+	       "%*s%s/%i %s\n%*s  loop depth:%2i freq:%4i size:%2i"
+	       " time: %2i callee size:%2i stack:%2i",
+	       indent, "", callee->name (), callee->order,
+	       !edge->inline_failed
+	       ? "inlined" : cgraph_inline_failed_string (edge-> inline_failed),
+	       indent, "", es->loop_depth, edge->frequency,
+	       es->call_stmt_size, es->call_stmt_time,
+	       (int) ipa_fn_summaries->get (callee)->size / ipa_fn_summary::size_scale,
+	       (int) ipa_fn_summaries->get (callee)->estimated_stack_size);
+
+      if (es->predicate)
+	{
+	  fprintf (f, " predicate: ");
+	  es->predicate->dump (f, info->conds);
+	}
+      else
+	fprintf (f, "\n");
+      if (es->param.exists ())
+	for (i = 0; i < (int) es->param.length (); i++)
+	  {
+	    int prob = es->param[i].change_prob;
+
+	    if (!prob)
+	      fprintf (f, "%*s op%i is compile time invariant\n",
+		       indent + 2, "", i);
+	    else if (prob != REG_BR_PROB_BASE)
+	      fprintf (f, "%*s op%i change %f%% of time\n", indent + 2, "", i,
+		       prob * 100.0 / REG_BR_PROB_BASE);
+	  }
+      if (!edge->inline_failed)
+	{
+	  fprintf (f, "%*sStack frame offset %i, callee self size %i,"
+		   " callee size %i\n",
+		   indent + 2, "",
+		   (int) ipa_fn_summaries->get (callee)->stack_frame_offset,
+		   (int) ipa_fn_summaries->get (callee)->estimated_self_stack_size,
+		   (int) ipa_fn_summaries->get (callee)->estimated_stack_size);
+	  dump_ipa_call_summary (f, indent + 2, callee, info);
+	}
+    }
+  for (edge = node->indirect_calls; edge; edge = edge->next_callee)
+    {
+      struct ipa_call_summary *es = ipa_call_summaries->get (edge);
+      fprintf (f, "%*sindirect call loop depth:%2i freq:%4i size:%2i"
+	       " time: %2i",
+	       indent, "",
+	       es->loop_depth,
+	       edge->frequency, es->call_stmt_size, es->call_stmt_time);
+      if (es->predicate)
+	{
+	  fprintf (f, "predicate: ");
+	  es->predicate->dump (f, info->conds);
+	}
+      else
+	fprintf (f, "\n");
+    }
+}
+
+
+void
+ipa_dump_fn_summary (FILE *f, struct cgraph_node *node)
+{
+  if (node->definition)
+    {
+      struct ipa_fn_summary *s = ipa_fn_summaries->get (node);
+      size_time_entry *e;
+      int i;
+      fprintf (f, "IPA function summary for %s/%i", node->name (),
+	       node->order);
+      if (DECL_DISREGARD_INLINE_LIMITS (node->decl))
+	fprintf (f, " always_inline");
+      if (s->inlinable)
+	fprintf (f, " inlinable");
+      if (s->contains_cilk_spawn)
+	fprintf (f, " contains_cilk_spawn");
+      if (s->fp_expressions)
+	fprintf (f, " fp_expression");
+      fprintf (f, "\n  global time:     %f\n", s->time.to_double ());
+      fprintf (f, "  self size:       %i\n", s->self_size);
+      fprintf (f, "  global size:     %i\n", s->size);
+      fprintf (f, "  min size:       %i\n", s->min_size);
+      fprintf (f, "  self stack:      %i\n",
+	       (int) s->estimated_self_stack_size);
+      fprintf (f, "  global stack:    %i\n", (int) s->estimated_stack_size);
+      if (s->growth)
+	fprintf (f, "  estimated growth:%i\n", (int) s->growth);
+      if (s->scc_no)
+	fprintf (f, "  In SCC:          %i\n", (int) s->scc_no);
+      for (i = 0; vec_safe_iterate (s->size_time_table, i, &e); i++)
+	{
+	  fprintf (f, "    size:%f, time:%f",
+		   (double) e->size / ipa_fn_summary::size_scale,
+		   e->time.to_double ());
+	  if (e->exec_predicate != true)
+	    {
+	      fprintf (f, ",  executed if:");
+	      e->exec_predicate.dump (f, s->conds, 0);
+	    }
+	  if (e->exec_predicate != e->nonconst_predicate)
+	    {
+	      fprintf (f, ",  nonconst if:");
+	      e->nonconst_predicate.dump (f, s->conds, 0);
+	    }
+	  fprintf (f, "\n");
+	}
+      if (s->loop_iterations)
+	{
+	  fprintf (f, "  loop iterations:");
+	  s->loop_iterations->dump (f, s->conds);
+	}
+      if (s->loop_stride)
+	{
+	  fprintf (f, "  loop stride:");
+	  s->loop_stride->dump (f, s->conds);
+	}
+      if (s->array_index)
+	{
+	  fprintf (f, "  array index:");
+	  s->array_index->dump (f, s->conds);
+	}
+      fprintf (f, "  calls:\n");
+      dump_ipa_call_summary (f, 4, node, s);
+      fprintf (f, "\n");
+    }
+}
+
+DEBUG_FUNCTION void
+ipa_debug_fn_summary (struct cgraph_node *node)
+{
+  ipa_dump_fn_summary (stderr, node);
+}
+
+void
+ipa_dump_fn_summaries (FILE *f)
+{
+  struct cgraph_node *node;
+
+  FOR_EACH_DEFINED_FUNCTION (node)
+    if (!node->global.inlined_to)
+      ipa_dump_fn_summary (f, node);
+}
+
+/* Callback of walk_aliased_vdefs.  Flags that it has been invoked to the
+   boolean variable pointed to by DATA.  */
+
+static bool
+mark_modified (ao_ref *ao ATTRIBUTE_UNUSED, tree vdef ATTRIBUTE_UNUSED,
+	       void *data)
+{
+  bool *b = (bool *) data;
+  *b = true;
+  return true;
+}
+
+/* If OP refers to value of function parameter, return the corresponding
+   parameter.  If non-NULL, the size of the memory load (or the SSA_NAME of the
+   PARM_DECL) will be stored to *SIZE_P in that case too.  */
+
+static tree
+unmodified_parm_1 (gimple *stmt, tree op, HOST_WIDE_INT *size_p)
+{
+  /* SSA_NAME referring to parm default def?  */
+  if (TREE_CODE (op) == SSA_NAME
+      && SSA_NAME_IS_DEFAULT_DEF (op)
+      && TREE_CODE (SSA_NAME_VAR (op)) == PARM_DECL)
+    {
+      if (size_p)
+	*size_p = tree_to_shwi (TYPE_SIZE (TREE_TYPE (op)));
+      return SSA_NAME_VAR (op);
+    }
+  /* Non-SSA parm reference?  */
+  if (TREE_CODE (op) == PARM_DECL)
+    {
+      bool modified = false;
+
+      ao_ref refd;
+      ao_ref_init (&refd, op);
+      walk_aliased_vdefs (&refd, gimple_vuse (stmt), mark_modified, &modified,
+			  NULL);
+      if (!modified)
+	{
+	  if (size_p)
+	    *size_p = tree_to_shwi (TYPE_SIZE (TREE_TYPE (op)));
+	  return op;
+	}
+    }
+  return NULL_TREE;
+}
+
+/* If OP refers to value of function parameter, return the corresponding
+   parameter.  Also traverse chains of SSA register assignments.  If non-NULL,
+   the size of the memory load (or the SSA_NAME of the PARM_DECL) will be
+   stored to *SIZE_P in that case too.  */
+
+static tree
+unmodified_parm (gimple *stmt, tree op, HOST_WIDE_INT *size_p)
+{
+  tree res = unmodified_parm_1 (stmt, op, size_p);
+  if (res)
+    return res;
+
+  if (TREE_CODE (op) == SSA_NAME
+      && !SSA_NAME_IS_DEFAULT_DEF (op)
+      && gimple_assign_single_p (SSA_NAME_DEF_STMT (op)))
+    return unmodified_parm (SSA_NAME_DEF_STMT (op),
+			    gimple_assign_rhs1 (SSA_NAME_DEF_STMT (op)),
+			    size_p);
+  return NULL_TREE;
+}
+
+/* If OP refers to a value of a function parameter or value loaded from an
+   aggregate passed to a parameter (either by value or reference), return TRUE
+   and store the number of the parameter to *INDEX_P, the access size into
+   *SIZE_P, and information whether and how it has been loaded from an
+   aggregate into *AGGPOS.  INFO describes the function parameters, STMT is the
+   statement in which OP is used or loaded.  */
+
+static bool
+unmodified_parm_or_parm_agg_item (struct ipa_func_body_info *fbi,
+				  gimple *stmt, tree op, int *index_p,
+				  HOST_WIDE_INT *size_p,
+				  struct agg_position_info *aggpos)
+{
+  tree res = unmodified_parm_1 (stmt, op, size_p);
+
+  gcc_checking_assert (aggpos);
+  if (res)
+    {
+      *index_p = ipa_get_param_decl_index (fbi->info, res);
+      if (*index_p < 0)
+	return false;
+      aggpos->agg_contents = false;
+      aggpos->by_ref = false;
+      return true;
+    }
+
+  if (TREE_CODE (op) == SSA_NAME)
+    {
+      if (SSA_NAME_IS_DEFAULT_DEF (op)
+	  || !gimple_assign_single_p (SSA_NAME_DEF_STMT (op)))
+	return false;
+      stmt = SSA_NAME_DEF_STMT (op);
+      op = gimple_assign_rhs1 (stmt);
+      if (!REFERENCE_CLASS_P (op))
+	return unmodified_parm_or_parm_agg_item (fbi, stmt, op, index_p, size_p,
+						 aggpos);
+    }
+
+  aggpos->agg_contents = true;
+  return ipa_load_from_parm_agg (fbi, fbi->info->descriptors,
+				 stmt, op, index_p, &aggpos->offset,
+				 size_p, &aggpos->by_ref);
+}
+
+/* See if statement might disappear after inlining.
+   0 - means not eliminated
+   1 - half of statements goes away
+   2 - for sure it is eliminated.
+   We are not terribly sophisticated, basically looking for simple abstraction
+   penalty wrappers.  */
+
+static int
+eliminated_by_inlining_prob (gimple *stmt)
+{
+  enum gimple_code code = gimple_code (stmt);
+  enum tree_code rhs_code;
+
+  if (!optimize)
+    return 0;
+
+  switch (code)
+    {
+    case GIMPLE_RETURN:
+      return 2;
+    case GIMPLE_ASSIGN:
+      if (gimple_num_ops (stmt) != 2)
+	return 0;
+
+      rhs_code = gimple_assign_rhs_code (stmt);
+
+      /* Casts of parameters, loads from parameters passed by reference
+         and stores to return value or parameters are often free after
+         inlining dua to SRA and further combining.
+         Assume that half of statements goes away.  */
+      if (CONVERT_EXPR_CODE_P (rhs_code)
+	  || rhs_code == VIEW_CONVERT_EXPR
+	  || rhs_code == ADDR_EXPR
+	  || gimple_assign_rhs_class (stmt) == GIMPLE_SINGLE_RHS)
+	{
+	  tree rhs = gimple_assign_rhs1 (stmt);
+	  tree lhs = gimple_assign_lhs (stmt);
+	  tree inner_rhs = get_base_address (rhs);
+	  tree inner_lhs = get_base_address (lhs);
+	  bool rhs_free = false;
+	  bool lhs_free = false;
+
+	  if (!inner_rhs)
+	    inner_rhs = rhs;
+	  if (!inner_lhs)
+	    inner_lhs = lhs;
+
+	  /* Reads of parameter are expected to be free.  */
+	  if (unmodified_parm (stmt, inner_rhs, NULL))
+	    rhs_free = true;
+	  /* Match expressions of form &this->field. Those will most likely
+	     combine with something upstream after inlining.  */
+	  else if (TREE_CODE (inner_rhs) == ADDR_EXPR)
+	    {
+	      tree op = get_base_address (TREE_OPERAND (inner_rhs, 0));
+	      if (TREE_CODE (op) == PARM_DECL)
+		rhs_free = true;
+	      else if (TREE_CODE (op) == MEM_REF
+		       && unmodified_parm (stmt, TREE_OPERAND (op, 0), NULL))
+		rhs_free = true;
+	    }
+
+	  /* When parameter is not SSA register because its address is taken
+	     and it is just copied into one, the statement will be completely
+	     free after inlining (we will copy propagate backward).   */
+	  if (rhs_free && is_gimple_reg (lhs))
+	    return 2;
+
+	  /* Reads of parameters passed by reference
+	     expected to be free (i.e. optimized out after inlining).  */
+	  if (TREE_CODE (inner_rhs) == MEM_REF
+	      && unmodified_parm (stmt, TREE_OPERAND (inner_rhs, 0), NULL))
+	    rhs_free = true;
+
+	  /* Copying parameter passed by reference into gimple register is
+	     probably also going to copy propagate, but we can't be quite
+	     sure.  */
+	  if (rhs_free && is_gimple_reg (lhs))
+	    lhs_free = true;
+
+	  /* Writes to parameters, parameters passed by value and return value
+	     (either dirrectly or passed via invisible reference) are free.  
+
+	     TODO: We ought to handle testcase like
+	     struct a {int a,b;};
+	     struct a
+	     retrurnsturct (void)
+	     {
+	     struct a a ={1,2};
+	     return a;
+	     }
+
+	     This translate into:
+
+	     retrurnsturct ()
+	     {
+	     int a$b;
+	     int a$a;
+	     struct a a;
+	     struct a D.2739;
+
+	     <bb 2>:
+	     D.2739.a = 1;
+	     D.2739.b = 2;
+	     return D.2739;
+
+	     }
+	     For that we either need to copy ipa-split logic detecting writes
+	     to return value.  */
+	  if (TREE_CODE (inner_lhs) == PARM_DECL
+	      || TREE_CODE (inner_lhs) == RESULT_DECL
+	      || (TREE_CODE (inner_lhs) == MEM_REF
+		  && (unmodified_parm (stmt, TREE_OPERAND (inner_lhs, 0), NULL)
+		      || (TREE_CODE (TREE_OPERAND (inner_lhs, 0)) == SSA_NAME
+			  && SSA_NAME_VAR (TREE_OPERAND (inner_lhs, 0))
+			  && TREE_CODE (SSA_NAME_VAR (TREE_OPERAND
+						      (inner_lhs,
+						       0))) == RESULT_DECL))))
+	    lhs_free = true;
+	  if (lhs_free
+	      && (is_gimple_reg (rhs) || is_gimple_min_invariant (rhs)))
+	    rhs_free = true;
+	  if (lhs_free && rhs_free)
+	    return 1;
+	}
+      return 0;
+    default:
+      return 0;
+    }
+}
+
+
+/* If BB ends by a conditional we can turn into predicates, attach corresponding
+   predicates to the CFG edges.   */
+
+static void
+set_cond_stmt_execution_predicate (struct ipa_func_body_info *fbi,
+				   struct ipa_fn_summary *summary,
+				   basic_block bb)
+{
+  gimple *last;
+  tree op;
+  int index;
+  HOST_WIDE_INT size;
+  struct agg_position_info aggpos;
+  enum tree_code code, inverted_code;
+  edge e;
+  edge_iterator ei;
+  gimple *set_stmt;
+  tree op2;
+
+  last = last_stmt (bb);
+  if (!last || gimple_code (last) != GIMPLE_COND)
+    return;
+  if (!is_gimple_ip_invariant (gimple_cond_rhs (last)))
+    return;
+  op = gimple_cond_lhs (last);
+  /* TODO: handle conditionals like
+     var = op0 < 4;
+     if (var != 0).  */
+  if (unmodified_parm_or_parm_agg_item (fbi, last, op, &index, &size, &aggpos))
+    {
+      code = gimple_cond_code (last);
+      inverted_code = invert_tree_comparison (code, HONOR_NANS (op));
+
+      FOR_EACH_EDGE (e, ei, bb->succs)
+	{
+	  enum tree_code this_code = (e->flags & EDGE_TRUE_VALUE
+				      ? code : inverted_code);
+	  /* invert_tree_comparison will return ERROR_MARK on FP
+	     comparsions that are not EQ/NE instead of returning proper
+	     unordered one.  Be sure it is not confused with NON_CONSTANT.  */
+	  if (this_code != ERROR_MARK)
+	    {
+	      predicate p
+		= add_condition (summary, index, size, &aggpos, this_code,
+				 unshare_expr_without_location
+				 (gimple_cond_rhs (last)));
+	      e->aux = edge_predicate_pool.allocate ();
+	      *(predicate *) e->aux = p;
+	    }
+	}
+    }
+
+  if (TREE_CODE (op) != SSA_NAME)
+    return;
+  /* Special case
+     if (builtin_constant_p (op))
+     constant_code
+     else
+     nonconstant_code.
+     Here we can predicate nonconstant_code.  We can't
+     really handle constant_code since we have no predicate
+     for this and also the constant code is not known to be
+     optimized away when inliner doen't see operand is constant.
+     Other optimizers might think otherwise.  */
+  if (gimple_cond_code (last) != NE_EXPR
+      || !integer_zerop (gimple_cond_rhs (last)))
+    return;
+  set_stmt = SSA_NAME_DEF_STMT (op);
+  if (!gimple_call_builtin_p (set_stmt, BUILT_IN_CONSTANT_P)
+      || gimple_call_num_args (set_stmt) != 1)
+    return;
+  op2 = gimple_call_arg (set_stmt, 0);
+  if (!unmodified_parm_or_parm_agg_item (fbi, set_stmt, op2, &index, &size,
+					 &aggpos))
+    return;
+  FOR_EACH_EDGE (e, ei, bb->succs) if (e->flags & EDGE_FALSE_VALUE)
+    {
+      predicate p = add_condition (summary, index, size, &aggpos,
+				   predicate::is_not_constant, NULL_TREE);
+      e->aux = edge_predicate_pool.allocate ();
+      *(predicate *) e->aux = p;
+    }
+}
+
+
+/* If BB ends by a switch we can turn into predicates, attach corresponding
+   predicates to the CFG edges.   */
+
+static void
+set_switch_stmt_execution_predicate (struct ipa_func_body_info *fbi,
+				     struct ipa_fn_summary *summary,
+				     basic_block bb)
+{
+  gimple *lastg;
+  tree op;
+  int index;
+  HOST_WIDE_INT size;
+  struct agg_position_info aggpos;
+  edge e;
+  edge_iterator ei;
+  size_t n;
+  size_t case_idx;
+
+  lastg = last_stmt (bb);
+  if (!lastg || gimple_code (lastg) != GIMPLE_SWITCH)
+    return;
+  gswitch *last = as_a <gswitch *> (lastg);
+  op = gimple_switch_index (last);
+  if (!unmodified_parm_or_parm_agg_item (fbi, last, op, &index, &size, &aggpos))
+    return;
+
+  FOR_EACH_EDGE (e, ei, bb->succs)
+    {
+      e->aux = edge_predicate_pool.allocate ();
+      *(predicate *) e->aux = false;
+    }
+  n = gimple_switch_num_labels (last);
+  for (case_idx = 0; case_idx < n; ++case_idx)
+    {
+      tree cl = gimple_switch_label (last, case_idx);
+      tree min, max;
+      predicate p;
+
+      e = find_edge (bb, label_to_block (CASE_LABEL (cl)));
+      min = CASE_LOW (cl);
+      max = CASE_HIGH (cl);
+
+      /* For default we might want to construct predicate that none
+         of cases is met, but it is bit hard to do not having negations
+         of conditionals handy.  */
+      if (!min && !max)
+	p = true;
+      else if (!max)
+	p = add_condition (summary, index, size, &aggpos, EQ_EXPR,
+			   unshare_expr_without_location (min));
+      else
+	{
+	  predicate p1, p2;
+	  p1 = add_condition (summary, index, size, &aggpos, GE_EXPR,
+			      unshare_expr_without_location (min));
+	  p2 = add_condition (summary, index, size, &aggpos, LE_EXPR,
+			      unshare_expr_without_location (max));
+	  p = p1 & p2;
+	}
+      *(struct predicate *) e->aux
+	= p.or_with (summary->conds, *(struct predicate *) e->aux);
+    }
+}
+
+
+/* For each BB in NODE attach to its AUX pointer predicate under
+   which it is executable.  */
+
+static void
+compute_bb_predicates (struct ipa_func_body_info *fbi,
+		       struct cgraph_node *node,
+		       struct ipa_fn_summary *summary)
+{
+  struct function *my_function = DECL_STRUCT_FUNCTION (node->decl);
+  bool done = false;
+  basic_block bb;
+
+  FOR_EACH_BB_FN (bb, my_function)
+    {
+      set_cond_stmt_execution_predicate (fbi, summary, bb);
+      set_switch_stmt_execution_predicate (fbi, summary, bb);
+    }
+
+  /* Entry block is always executable.  */
+  ENTRY_BLOCK_PTR_FOR_FN (my_function)->aux
+    = edge_predicate_pool.allocate ();
+  *(predicate *) ENTRY_BLOCK_PTR_FOR_FN (my_function)->aux = true;
+
+  /* A simple dataflow propagation of predicates forward in the CFG.
+     TODO: work in reverse postorder.  */
+  while (!done)
+    {
+      done = true;
+      FOR_EACH_BB_FN (bb, my_function)
+	{
+	  predicate p = false;
+	  edge e;
+	  edge_iterator ei;
+	  FOR_EACH_EDGE (e, ei, bb->preds)
+	    {
+	      if (e->src->aux)
+		{
+		  predicate this_bb_predicate
+		    = *(predicate *) e->src->aux;
+		  if (e->aux)
+		    this_bb_predicate &= (*(struct predicate *) e->aux);
+		  p = p.or_with (summary->conds, this_bb_predicate);
+		  if (p == true)
+		    break;
+		}
+	    }
+	  if (p == false)
+	    gcc_checking_assert (!bb->aux);
+	  else
+	    {
+	      if (!bb->aux)
+		{
+		  done = false;
+		  bb->aux = edge_predicate_pool.allocate ();
+		  *((predicate *) bb->aux) = p;
+		}
+	      else if (p != *(predicate *) bb->aux)
+		{
+		  /* This OR operation is needed to ensure monotonous data flow
+		     in the case we hit the limit on number of clauses and the
+		     and/or operations above give approximate answers.  */
+		  p = p.or_with (summary->conds, *(predicate *)bb->aux);
+	          if (p != *(predicate *) bb->aux)
+		    {
+		      done = false;
+		      *((predicate *) bb->aux) = p;
+		    }
+		}
+	    }
+	}
+    }
+}
+
+
+/* Return predicate specifying when the STMT might have result that is not
+   a compile time constant.  */
+
+static predicate
+will_be_nonconstant_expr_predicate (struct ipa_node_params *info,
+				    struct ipa_fn_summary *summary,
+				    tree expr,
+				    vec<predicate> nonconstant_names)
+{
+  tree parm;
+  int index;
+  HOST_WIDE_INT size;
+
+  while (UNARY_CLASS_P (expr))
+    expr = TREE_OPERAND (expr, 0);
+
+  parm = unmodified_parm (NULL, expr, &size);
+  if (parm && (index = ipa_get_param_decl_index (info, parm)) >= 0)
+    return add_condition (summary, index, size, NULL, predicate::changed,
+			  NULL_TREE);
+  if (is_gimple_min_invariant (expr))
+    return false;
+  if (TREE_CODE (expr) == SSA_NAME)
+    return nonconstant_names[SSA_NAME_VERSION (expr)];
+  if (BINARY_CLASS_P (expr) || COMPARISON_CLASS_P (expr))
+    {
+      predicate p1 = will_be_nonconstant_expr_predicate
+	(info, summary, TREE_OPERAND (expr, 0),
+	 nonconstant_names);
+      if (p1 == true)
+	return p1;
+
+      predicate p2;
+      p2 = will_be_nonconstant_expr_predicate (info, summary,
+					       TREE_OPERAND (expr, 1),
+					       nonconstant_names);
+      return p1.or_with (summary->conds, p2);
+    }
+  else if (TREE_CODE (expr) == COND_EXPR)
+    {
+      predicate p1 = will_be_nonconstant_expr_predicate
+	(info, summary, TREE_OPERAND (expr, 0),
+	 nonconstant_names);
+      if (p1 == true)
+	return p1;
+
+      predicate p2;
+      p2 = will_be_nonconstant_expr_predicate (info, summary,
+					       TREE_OPERAND (expr, 1),
+					       nonconstant_names);
+      if (p2 == true)
+	return p2;
+      p1 = p1.or_with (summary->conds, p2);
+      p2 = will_be_nonconstant_expr_predicate (info, summary,
+					       TREE_OPERAND (expr, 2),
+					       nonconstant_names);
+      return p2.or_with (summary->conds, p1);
+    }
+  else
+    {
+      debug_tree (expr);
+      gcc_unreachable ();
+    }
+  return false;
+}
+
+
+/* Return predicate specifying when the STMT might have result that is not
+   a compile time constant.  */
+
+static predicate
+will_be_nonconstant_predicate (struct ipa_func_body_info *fbi,
+			       struct ipa_fn_summary *summary,
+			       gimple *stmt,
+			       vec<predicate> nonconstant_names)
+{
+  predicate p = true;
+  ssa_op_iter iter;
+  tree use;
+  predicate op_non_const;
+  bool is_load;
+  int base_index;
+  HOST_WIDE_INT size;
+  struct agg_position_info aggpos;
+
+  /* What statments might be optimized away
+     when their arguments are constant.  */
+  if (gimple_code (stmt) != GIMPLE_ASSIGN
+      && gimple_code (stmt) != GIMPLE_COND
+      && gimple_code (stmt) != GIMPLE_SWITCH
+      && (gimple_code (stmt) != GIMPLE_CALL
+	  || !(gimple_call_flags (stmt) & ECF_CONST)))
+    return p;
+
+  /* Stores will stay anyway.  */
+  if (gimple_store_p (stmt))
+    return p;
+
+  is_load = gimple_assign_load_p (stmt);
+
+  /* Loads can be optimized when the value is known.  */
+  if (is_load)
+    {
+      tree op;
+      gcc_assert (gimple_assign_single_p (stmt));
+      op = gimple_assign_rhs1 (stmt);
+      if (!unmodified_parm_or_parm_agg_item (fbi, stmt, op, &base_index, &size,
+					     &aggpos))
+	return p;
+    }
+  else
+    base_index = -1;
+
+  /* See if we understand all operands before we start
+     adding conditionals.  */
+  FOR_EACH_SSA_TREE_OPERAND (use, stmt, iter, SSA_OP_USE)
+    {
+      tree parm = unmodified_parm (stmt, use, NULL);
+      /* For arguments we can build a condition.  */
+      if (parm && ipa_get_param_decl_index (fbi->info, parm) >= 0)
+	continue;
+      if (TREE_CODE (use) != SSA_NAME)
+	return p;
+      /* If we know when operand is constant,
+	 we still can say something useful.  */
+      if (nonconstant_names[SSA_NAME_VERSION (use)] != true)
+	continue;
+      return p;
+    }
+
+  if (is_load)
+    op_non_const =
+      add_condition (summary, base_index, size, &aggpos, predicate::changed,
+		     NULL);
+  else
+    op_non_const = false;
+  FOR_EACH_SSA_TREE_OPERAND (use, stmt, iter, SSA_OP_USE)
+    {
+      HOST_WIDE_INT size;
+      tree parm = unmodified_parm (stmt, use, &size);
+      int index;
+
+      if (parm && (index = ipa_get_param_decl_index (fbi->info, parm)) >= 0)
+	{
+	  if (index != base_index)
+	    p = add_condition (summary, index, size, NULL, predicate::changed,
+			       NULL_TREE);
+	  else
+	    continue;
+	}
+      else
+	p = nonconstant_names[SSA_NAME_VERSION (use)];
+      op_non_const = p.or_with (summary->conds, op_non_const);
+    }
+  if ((gimple_code (stmt) == GIMPLE_ASSIGN || gimple_code (stmt) == GIMPLE_CALL)
+      && gimple_op (stmt, 0)
+      && TREE_CODE (gimple_op (stmt, 0)) == SSA_NAME)
+    nonconstant_names[SSA_NAME_VERSION (gimple_op (stmt, 0))]
+      = op_non_const;
+  return op_non_const;
+}
+
+struct record_modified_bb_info
+{
+  bitmap bb_set;
+  gimple *stmt;
+};
+
+/* Value is initialized in INIT_BB and used in USE_BB.  We want to copute
+   probability how often it changes between USE_BB.
+   INIT_BB->frequency/USE_BB->frequency is an estimate, but if INIT_BB
+   is in different loop nest, we can do better.
+   This is all just estimate.  In theory we look for minimal cut separating
+   INIT_BB and USE_BB, but we only want to anticipate loop invariant motion
+   anyway.  */
+
+static basic_block
+get_minimal_bb (basic_block init_bb, basic_block use_bb)
+{
+  struct loop *l = find_common_loop (init_bb->loop_father, use_bb->loop_father);
+  if (l && l->header->frequency < init_bb->frequency)
+    return l->header;
+  return init_bb;
+}
+
+/* Callback of walk_aliased_vdefs.  Records basic blocks where the value may be
+   set except for info->stmt.  */
+
+static bool
+record_modified (ao_ref *ao ATTRIBUTE_UNUSED, tree vdef, void *data)
+{
+  struct record_modified_bb_info *info =
+    (struct record_modified_bb_info *) data;
+  if (SSA_NAME_DEF_STMT (vdef) == info->stmt)
+    return false;
+  bitmap_set_bit (info->bb_set,
+		  SSA_NAME_IS_DEFAULT_DEF (vdef)
+		  ? ENTRY_BLOCK_PTR_FOR_FN (cfun)->index
+		  : get_minimal_bb
+			 (gimple_bb (SSA_NAME_DEF_STMT (vdef)),
+			  gimple_bb (info->stmt))->index);
+  return false;
+}
+
+/* Return probability (based on REG_BR_PROB_BASE) that I-th parameter of STMT
+   will change since last invocation of STMT. 
+
+   Value 0 is reserved for compile time invariants.
+   For common parameters it is REG_BR_PROB_BASE.  For loop invariants it
+   ought to be REG_BR_PROB_BASE / estimated_iters.  */
+
+static int
+param_change_prob (gimple *stmt, int i)
+{
+  tree op = gimple_call_arg (stmt, i);
+  basic_block bb = gimple_bb (stmt);
+
+  if (TREE_CODE (op) == WITH_SIZE_EXPR)
+    op = TREE_OPERAND (op, 0);
+
+  tree base = get_base_address (op);
+
+  /* Global invariants never change.  */
+  if (is_gimple_min_invariant (base))
+    return 0;
+
+  /* We would have to do non-trivial analysis to really work out what
+     is the probability of value to change (i.e. when init statement
+     is in a sibling loop of the call). 
+
+     We do an conservative estimate: when call is executed N times more often
+     than the statement defining value, we take the frequency 1/N.  */
+  if (TREE_CODE (base) == SSA_NAME)
+    {
+      int init_freq;
+
+      if (!bb->frequency)
+	return REG_BR_PROB_BASE;
+
+      if (SSA_NAME_IS_DEFAULT_DEF (base))
+	init_freq = ENTRY_BLOCK_PTR_FOR_FN (cfun)->frequency;
+      else
+	init_freq = get_minimal_bb
+		      (gimple_bb (SSA_NAME_DEF_STMT (base)),
+		       gimple_bb (stmt))->frequency;
+
+      if (!init_freq)
+	init_freq = 1;
+      if (init_freq < bb->frequency)
+	return MAX (GCOV_COMPUTE_SCALE (init_freq, bb->frequency), 1);
+      else
+	return REG_BR_PROB_BASE;
+    }
+  else
+    {
+      ao_ref refd;
+      int max;
+      struct record_modified_bb_info info;
+      bitmap_iterator bi;
+      unsigned index;
+      tree init = ctor_for_folding (base);
+
+      if (init != error_mark_node)
+	return 0;
+      if (!bb->frequency)
+	return REG_BR_PROB_BASE;
+      ao_ref_init (&refd, op);
+      info.stmt = stmt;
+      info.bb_set = BITMAP_ALLOC (NULL);
+      walk_aliased_vdefs (&refd, gimple_vuse (stmt), record_modified, &info,
+			  NULL);
+      if (bitmap_bit_p (info.bb_set, bb->index))
+	{
+	  BITMAP_FREE (info.bb_set);
+	  return REG_BR_PROB_BASE;
+	}
+
+      /* Assume that every memory is initialized at entry.
+         TODO: Can we easilly determine if value is always defined
+         and thus we may skip entry block?  */
+      if (ENTRY_BLOCK_PTR_FOR_FN (cfun)->frequency)
+	max = ENTRY_BLOCK_PTR_FOR_FN (cfun)->frequency;
+      else
+	max = 1;
+
+      EXECUTE_IF_SET_IN_BITMAP (info.bb_set, 0, index, bi)
+	max = MIN (max, BASIC_BLOCK_FOR_FN (cfun, index)->frequency);
+
+      BITMAP_FREE (info.bb_set);
+      if (max < bb->frequency)
+	return MAX (GCOV_COMPUTE_SCALE (max, bb->frequency), 1);
+      else
+	return REG_BR_PROB_BASE;
+    }
+}
+
+/* Find whether a basic block BB is the final block of a (half) diamond CFG
+   sub-graph and if the predicate the condition depends on is known.  If so,
+   return true and store the pointer the predicate in *P.  */
+
+static bool
+phi_result_unknown_predicate (struct ipa_node_params *info,
+			      ipa_fn_summary *summary, basic_block bb,
+			      predicate *p,
+			      vec<predicate> nonconstant_names)
+{
+  edge e;
+  edge_iterator ei;
+  basic_block first_bb = NULL;
+  gimple *stmt;
+
+  if (single_pred_p (bb))
+    {
+      *p = false;
+      return true;
+    }
+
+  FOR_EACH_EDGE (e, ei, bb->preds)
+    {
+      if (single_succ_p (e->src))
+	{
+	  if (!single_pred_p (e->src))
+	    return false;
+	  if (!first_bb)
+	    first_bb = single_pred (e->src);
+	  else if (single_pred (e->src) != first_bb)
+	    return false;
+	}
+      else
+	{
+	  if (!first_bb)
+	    first_bb = e->src;
+	  else if (e->src != first_bb)
+	    return false;
+	}
+    }
+
+  if (!first_bb)
+    return false;
+
+  stmt = last_stmt (first_bb);
+  if (!stmt
+      || gimple_code (stmt) != GIMPLE_COND
+      || !is_gimple_ip_invariant (gimple_cond_rhs (stmt)))
+    return false;
+
+  *p = will_be_nonconstant_expr_predicate (info, summary,
+					   gimple_cond_lhs (stmt),
+					   nonconstant_names);
+  if (*p == true)
+    return false;
+  else
+    return true;
+}
+
+/* Given a PHI statement in a function described by inline properties SUMMARY
+   and *P being the predicate describing whether the selected PHI argument is
+   known, store a predicate for the result of the PHI statement into
+   NONCONSTANT_NAMES, if possible.  */
+
+static void
+predicate_for_phi_result (struct ipa_fn_summary *summary, gphi *phi,
+			  predicate *p,
+			  vec<predicate> nonconstant_names)
+{
+  unsigned i;
+
+  for (i = 0; i < gimple_phi_num_args (phi); i++)
+    {
+      tree arg = gimple_phi_arg (phi, i)->def;
+      if (!is_gimple_min_invariant (arg))
+	{
+	  gcc_assert (TREE_CODE (arg) == SSA_NAME);
+	  *p = p->or_with (summary->conds,
+			   nonconstant_names[SSA_NAME_VERSION (arg)]);
+	  if (*p == true)
+	    return;
+	}
+    }
+
+  if (dump_file && (dump_flags & TDF_DETAILS))
+    {
+      fprintf (dump_file, "\t\tphi predicate: ");
+      p->dump (dump_file, summary->conds);
+    }
+  nonconstant_names[SSA_NAME_VERSION (gimple_phi_result (phi))] = *p;
+}
+
+/* Return predicate specifying when array index in access OP becomes non-constant.  */
+
+static predicate
+array_index_predicate (ipa_fn_summary *info,
+		       vec< predicate> nonconstant_names, tree op)
+{
+  predicate p = false;
+  while (handled_component_p (op))
+    {
+      if (TREE_CODE (op) == ARRAY_REF || TREE_CODE (op) == ARRAY_RANGE_REF)
+	{
+	  if (TREE_CODE (TREE_OPERAND (op, 1)) == SSA_NAME)
+	    p = p.or_with (info->conds, 
+			   nonconstant_names[SSA_NAME_VERSION
+						  (TREE_OPERAND (op, 1))]);
+	}
+      op = TREE_OPERAND (op, 0);
+    }
+  return p;
+}
+
+/* For a typical usage of __builtin_expect (a<b, 1), we
+   may introduce an extra relation stmt:
+   With the builtin, we have
+     t1 = a <= b;
+     t2 = (long int) t1;
+     t3 = __builtin_expect (t2, 1);
+     if (t3 != 0)
+       goto ...
+   Without the builtin, we have
+     if (a<=b)
+       goto...
+   This affects the size/time estimation and may have
+   an impact on the earlier inlining.
+   Here find this pattern and fix it up later.  */
+
+static gimple *
+find_foldable_builtin_expect (basic_block bb)
+{
+  gimple_stmt_iterator bsi;
+
+  for (bsi = gsi_start_bb (bb); !gsi_end_p (bsi); gsi_next (&bsi))
+    {
+      gimple *stmt = gsi_stmt (bsi);
+      if (gimple_call_builtin_p (stmt, BUILT_IN_EXPECT)
+	  || gimple_call_internal_p (stmt, IFN_BUILTIN_EXPECT))
+        {
+          tree var = gimple_call_lhs (stmt);
+          tree arg = gimple_call_arg (stmt, 0);
+          use_operand_p use_p;
+	  gimple *use_stmt;
+          bool match = false;
+          bool done = false;
+
+          if (!var || !arg)
+            continue;
+          gcc_assert (TREE_CODE (var) == SSA_NAME);
+
+          while (TREE_CODE (arg) == SSA_NAME)
+            {
+	      gimple *stmt_tmp = SSA_NAME_DEF_STMT (arg);
+              if (!is_gimple_assign (stmt_tmp))
+                break;
+              switch (gimple_assign_rhs_code (stmt_tmp))
+                {
+                  case LT_EXPR:
+                  case LE_EXPR:
+                  case GT_EXPR:
+                  case GE_EXPR:
+                  case EQ_EXPR:
+                  case NE_EXPR:
+                    match = true;
+                    done = true;
+                    break;
+                  CASE_CONVERT:
+                    break;
+                  default:
+                    done = true;
+                    break;
+                }
+              if (done)
+                break;
+              arg = gimple_assign_rhs1 (stmt_tmp);
+            }
+
+          if (match && single_imm_use (var, &use_p, &use_stmt)
+              && gimple_code (use_stmt) == GIMPLE_COND)
+            return use_stmt;
+        }
+    }
+  return NULL;
+}
+
+/* Return true when the basic blocks contains only clobbers followed by RESX.
+   Such BBs are kept around to make removal of dead stores possible with
+   presence of EH and will be optimized out by optimize_clobbers later in the
+   game. 
+
+   NEED_EH is used to recurse in case the clobber has non-EH predecestors
+   that can be clobber only, too.. When it is false, the RESX is not necessary
+   on the end of basic block.  */
+
+static bool
+clobber_only_eh_bb_p (basic_block bb, bool need_eh = true)
+{
+  gimple_stmt_iterator gsi = gsi_last_bb (bb);
+  edge_iterator ei;
+  edge e;
+
+  if (need_eh)
+    {
+      if (gsi_end_p (gsi))
+	return false;
+      if (gimple_code (gsi_stmt (gsi)) != GIMPLE_RESX)
+        return false;
+      gsi_prev (&gsi);
+    }
+  else if (!single_succ_p (bb))
+    return false;
+
+  for (; !gsi_end_p (gsi); gsi_prev (&gsi))
+    {
+      gimple *stmt = gsi_stmt (gsi);
+      if (is_gimple_debug (stmt))
+	continue;
+      if (gimple_clobber_p (stmt))
+	continue;
+      if (gimple_code (stmt) == GIMPLE_LABEL)
+	break;
+      return false;
+    }
+
+  /* See if all predecestors are either throws or clobber only BBs.  */
+  FOR_EACH_EDGE (e, ei, bb->preds)
+    if (!(e->flags & EDGE_EH)
+	&& !clobber_only_eh_bb_p (e->src, false))
+      return false;
+
+  return true;
+}
+
+/* Return true if STMT compute a floating point expression that may be affected
+   by -ffast-math and similar flags.  */
+
+static bool
+fp_expression_p (gimple *stmt)
+{
+  ssa_op_iter i;
+  tree op;
+
+  FOR_EACH_SSA_TREE_OPERAND (op, stmt, i, SSA_OP_DEF|SSA_OP_USE)
+    if (FLOAT_TYPE_P (TREE_TYPE (op)))
+      return true;
+  return false;
+}
+
+/* Analyze function body for NODE.
+   EARLY indicates run from early optimization pipeline.  */
+
+static void
+analyze_function_body (struct cgraph_node *node, bool early)
+{
+  sreal time = 0;
+  /* Estimate static overhead for function prologue/epilogue and alignment. */
+  int size = 2;
+  /* Benefits are scaled by probability of elimination that is in range
+     <0,2>.  */
+  basic_block bb;
+  struct function *my_function = DECL_STRUCT_FUNCTION (node->decl);
+  int freq;
+  struct ipa_fn_summary *info = ipa_fn_summaries->get (node);
+  predicate bb_predicate;
+  struct ipa_func_body_info fbi;
+  vec<predicate> nonconstant_names = vNULL;
+  int nblocks, n;
+  int *order;
+  predicate array_index = true;
+  gimple *fix_builtin_expect_stmt;
+
+  gcc_assert (my_function && my_function->cfg);
+  gcc_assert (cfun == my_function);
+
+  memset(&fbi, 0, sizeof(fbi));
+  info->conds = NULL;
+  info->size_time_table = NULL;
+
+  /* When optimizing and analyzing for IPA inliner, initialize loop optimizer
+     so we can produce proper inline hints.
+
+     When optimizing and analyzing for early inliner, initialize node params
+     so we can produce correct BB predicates.  */
+     
+  if (opt_for_fn (node->decl, optimize))
+    {
+      calculate_dominance_info (CDI_DOMINATORS);
+      if (!early)
+        loop_optimizer_init (LOOPS_NORMAL | LOOPS_HAVE_RECORDED_EXITS);
+      else
+	{
+	  ipa_check_create_node_params ();
+	  ipa_initialize_node_params (node);
+	}
+
+      if (ipa_node_params_sum)
+	{
+	  fbi.node = node;
+	  fbi.info = IPA_NODE_REF (node);
+	  fbi.bb_infos = vNULL;
+	  fbi.bb_infos.safe_grow_cleared (last_basic_block_for_fn (cfun));
+	  fbi.param_count = count_formal_params(node->decl);
+	  nonconstant_names.safe_grow_cleared
+	    (SSANAMES (my_function)->length ());
+	}
+    }
+
+  if (dump_file)
+    fprintf (dump_file, "\nAnalyzing function body size: %s\n",
+	     node->name ());
+
+  /* When we run into maximal number of entries, we assign everything to the
+     constant truth case.  Be sure to have it in list. */
+  bb_predicate = true;
+  info->account_size_time (0, 0, bb_predicate, bb_predicate);
+
+  bb_predicate = predicate::not_inlined ();
+  info->account_size_time (2 * ipa_fn_summary::size_scale, 0, bb_predicate,
+		           bb_predicate);
+
+  if (fbi.info)
+    compute_bb_predicates (&fbi, node, info);
+  order = XNEWVEC (int, n_basic_blocks_for_fn (cfun));
+  nblocks = pre_and_rev_post_order_compute (NULL, order, false);
+  for (n = 0; n < nblocks; n++)
+    {
+      bb = BASIC_BLOCK_FOR_FN (cfun, order[n]);
+      freq = compute_call_stmt_bb_frequency (node->decl, bb);
+      if (clobber_only_eh_bb_p (bb))
+	{
+	  if (dump_file && (dump_flags & TDF_DETAILS))
+	    fprintf (dump_file, "\n Ignoring BB %i;"
+		     " it will be optimized away by cleanup_clobbers\n",
+		     bb->index);
+	  continue;
+	}
+
+      /* TODO: Obviously predicates can be propagated down across CFG.  */
+      if (fbi.info)
+	{
+	  if (bb->aux)
+	    bb_predicate = *(predicate *) bb->aux;
+	  else
+	    bb_predicate = false;
+	}
+      else
+	bb_predicate = true;
+
+      if (dump_file && (dump_flags & TDF_DETAILS))
+	{
+	  fprintf (dump_file, "\n BB %i predicate:", bb->index);
+	  bb_predicate.dump (dump_file, info->conds);
+	}
+
+      if (fbi.info && nonconstant_names.exists ())
+	{
+	  predicate phi_predicate;
+	  bool first_phi = true;
+
+	  for (gphi_iterator bsi = gsi_start_phis (bb); !gsi_end_p (bsi);
+	       gsi_next (&bsi))
+	    {
+	      if (first_phi
+		  && !phi_result_unknown_predicate (fbi.info, info, bb,
+						    &phi_predicate,
+						    nonconstant_names))
+		break;
+	      first_phi = false;
+	      if (dump_file && (dump_flags & TDF_DETAILS))
+		{
+		  fprintf (dump_file, "  ");
+		  print_gimple_stmt (dump_file, gsi_stmt (bsi), 0);
+		}
+	      predicate_for_phi_result (info, bsi.phi (), &phi_predicate,
+					nonconstant_names);
+	    }
+	}
+
+      fix_builtin_expect_stmt = find_foldable_builtin_expect (bb);
+
+      for (gimple_stmt_iterator bsi = gsi_start_bb (bb); !gsi_end_p (bsi);
+	   gsi_next (&bsi))
+	{
+	  gimple *stmt = gsi_stmt (bsi);
+	  int this_size = estimate_num_insns (stmt, &eni_size_weights);
+	  int this_time = estimate_num_insns (stmt, &eni_time_weights);
+	  int prob;
+	  predicate will_be_nonconstant;
+
+          /* This relation stmt should be folded after we remove
+             buildin_expect call. Adjust the cost here.  */
+	  if (stmt == fix_builtin_expect_stmt)
+            {
+              this_size--;
+              this_time--;
+            }
+
+	  if (dump_file && (dump_flags & TDF_DETAILS))
+	    {
+	      fprintf (dump_file, "  ");
+	      print_gimple_stmt (dump_file, stmt, 0);
+	      fprintf (dump_file, "\t\tfreq:%3.2f size:%3i time:%3i\n",
+		       ((double) freq) / CGRAPH_FREQ_BASE, this_size,
+		       this_time);
+	    }
+
+	  if (gimple_assign_load_p (stmt) && nonconstant_names.exists ())
+	    {
+	      predicate this_array_index;
+	      this_array_index =
+		array_index_predicate (info, nonconstant_names,
+				       gimple_assign_rhs1 (stmt));
+	      if (this_array_index != false)
+		array_index &= this_array_index;
+	    }
+	  if (gimple_store_p (stmt) && nonconstant_names.exists ())
+	    {
+	      predicate this_array_index;
+	      this_array_index =
+		array_index_predicate (info, nonconstant_names,
+				       gimple_get_lhs (stmt));
+	      if (this_array_index != false)
+		array_index &= this_array_index;
+	    }
+
+
+	  if (is_gimple_call (stmt)
+	      && !gimple_call_internal_p (stmt))
+	    {
+	      struct cgraph_edge *edge = node->get_edge (stmt);
+	      struct ipa_call_summary *es = ipa_call_summaries->get (edge);
+
+	      /* Special case: results of BUILT_IN_CONSTANT_P will be always
+	         resolved as constant.  We however don't want to optimize
+	         out the cgraph edges.  */
+	      if (nonconstant_names.exists ()
+		  && gimple_call_builtin_p (stmt, BUILT_IN_CONSTANT_P)
+		  && gimple_call_lhs (stmt)
+		  && TREE_CODE (gimple_call_lhs (stmt)) == SSA_NAME)
+		{
+		  predicate false_p = false;
+		  nonconstant_names[SSA_NAME_VERSION (gimple_call_lhs (stmt))]
+		    = false_p;
+		}
+	      if (ipa_node_params_sum)
+		{
+		  int count = gimple_call_num_args (stmt);
+		  int i;
+
+		  if (count)
+		    es->param.safe_grow_cleared (count);
+		  for (i = 0; i < count; i++)
+		    {
+		      int prob = param_change_prob (stmt, i);
+		      gcc_assert (prob >= 0 && prob <= REG_BR_PROB_BASE);
+		      es->param[i].change_prob = prob;
+		    }
+		}
+
+	      es->call_stmt_size = this_size;
+	      es->call_stmt_time = this_time;
+	      es->loop_depth = bb_loop_depth (bb);
+	      edge_set_predicate (edge, &bb_predicate);
+	    }
+
+	  /* TODO: When conditional jump or swithc is known to be constant, but
+	     we did not translate it into the predicates, we really can account
+	     just maximum of the possible paths.  */
+	  if (fbi.info)
+	    will_be_nonconstant
+	      = will_be_nonconstant_predicate (&fbi, info,
+					       stmt, nonconstant_names);
+	  else
+	    will_be_nonconstant = true;
+	  if (this_time || this_size)
+	    {
+	      this_time *= freq;
+
+	      prob = eliminated_by_inlining_prob (stmt);
+	      if (prob == 1 && dump_file && (dump_flags & TDF_DETAILS))
+		fprintf (dump_file,
+			 "\t\t50%% will be eliminated by inlining\n");
+	      if (prob == 2 && dump_file && (dump_flags & TDF_DETAILS))
+		fprintf (dump_file, "\t\tWill be eliminated by inlining\n");
+
+	      struct predicate p = bb_predicate & will_be_nonconstant;
+
+	      /* We can ignore statement when we proved it is never going
+		 to happen, but we can not do that for call statements
+		 because edges are accounted specially.  */
+
+	      if (*(is_gimple_call (stmt) ? &bb_predicate : &p) != false)
+		{
+		  time += this_time;
+		  size += this_size;
+		}
+
+	      /* We account everything but the calls.  Calls have their own
+	         size/time info attached to cgraph edges.  This is necessary
+	         in order to make the cost disappear after inlining.  */
+	      if (!is_gimple_call (stmt))
+		{
+		  if (prob)
+		    {
+		      predicate ip = bb_predicate & predicate::not_inlined ();
+		      info->account_size_time (this_size * prob,
+					       (sreal)(this_time * prob)
+					       / (CGRAPH_FREQ_BASE * 2), ip,
+					       p);
+		    }
+		  if (prob != 2)
+		    info->account_size_time (this_size * (2 - prob),
+					     (sreal)(this_time * (2 - prob))
+					      / (CGRAPH_FREQ_BASE * 2),
+					     bb_predicate,
+					     p);
+		}
+
+	      if (!info->fp_expressions && fp_expression_p (stmt))
+		{
+		  info->fp_expressions = true;
+		  if (dump_file)
+		    fprintf (dump_file, "   fp_expression set\n");
+		}
+
+	      gcc_assert (time >= 0);
+	      gcc_assert (size >= 0);
+	    }
+	}
+    }
+  set_hint_predicate (&ipa_fn_summaries->get (node)->array_index, array_index);
+  time = time / CGRAPH_FREQ_BASE;
+  free (order);
+
+  if (nonconstant_names.exists () && !early)
+    {
+      struct loop *loop;
+      predicate loop_iterations = true;
+      predicate loop_stride = true;
+
+      if (dump_file && (dump_flags & TDF_DETAILS))
+	flow_loops_dump (dump_file, NULL, 0);
+      scev_initialize ();
+      FOR_EACH_LOOP (loop, 0)
+	{
+	  vec<edge> exits;
+	  edge ex;
+	  unsigned int j;
+	  struct tree_niter_desc niter_desc;
+	  bb_predicate = *(predicate *) loop->header->aux;
+
+	  exits = get_loop_exit_edges (loop);
+	  FOR_EACH_VEC_ELT (exits, j, ex)
+	    if (number_of_iterations_exit (loop, ex, &niter_desc, false)
+		&& !is_gimple_min_invariant (niter_desc.niter))
+	    {
+	      predicate will_be_nonconstant
+		= will_be_nonconstant_expr_predicate (fbi.info, info,
+						      niter_desc.niter,
+						      nonconstant_names);
+	      if (will_be_nonconstant != true)
+		will_be_nonconstant = bb_predicate & will_be_nonconstant;
+	      if (will_be_nonconstant != true
+		  && will_be_nonconstant != false)
+		/* This is slightly inprecise.  We may want to represent each
+		   loop with independent predicate.  */
+		loop_iterations &= will_be_nonconstant;
+	    }
+	  exits.release ();
+	}
+
+      /* To avoid quadratic behavior we analyze stride predicates only
+         with respect to the containing loop.  Thus we simply iterate
+	 over all defs in the outermost loop body.  */
+      for (loop = loops_for_fn (cfun)->tree_root->inner;
+	   loop != NULL; loop = loop->next)
+	{
+	  basic_block *body = get_loop_body (loop);
+	  for (unsigned i = 0; i < loop->num_nodes; i++)
+	    {
+	      gimple_stmt_iterator gsi;
+	      bb_predicate = *(predicate *) body[i]->aux;
+	      for (gsi = gsi_start_bb (body[i]); !gsi_end_p (gsi);
+		   gsi_next (&gsi))
+		{
+		  gimple *stmt = gsi_stmt (gsi);
+
+		  if (!is_gimple_assign (stmt))
+		    continue;
+
+		  tree def = gimple_assign_lhs (stmt);
+		  if (TREE_CODE (def) != SSA_NAME)
+		    continue;
+
+		  affine_iv iv;
+		  if (!simple_iv (loop_containing_stmt (stmt),
+				  loop_containing_stmt (stmt),
+				  def, &iv, true)
+		      || is_gimple_min_invariant (iv.step))
+		    continue;
+
+		  predicate will_be_nonconstant
+		    = will_be_nonconstant_expr_predicate (fbi.info, info,
+							  iv.step,
+							  nonconstant_names);
+		  if (will_be_nonconstant != true)
+		    will_be_nonconstant = bb_predicate & will_be_nonconstant;
+		  if (will_be_nonconstant != true
+		      && will_be_nonconstant != false)
+		    /* This is slightly inprecise.  We may want to represent
+		       each loop with independent predicate.  */
+		    loop_stride = loop_stride & will_be_nonconstant;
+		}
+	    }
+	  free (body);
+	}
+      set_hint_predicate (&ipa_fn_summaries->get (node)->loop_iterations,
+			  loop_iterations);
+      set_hint_predicate (&ipa_fn_summaries->get (node)->loop_stride,
+			  loop_stride);
+      scev_finalize ();
+    }
+  FOR_ALL_BB_FN (bb, my_function)
+    {
+      edge e;
+      edge_iterator ei;
+
+      if (bb->aux)
+	edge_predicate_pool.remove ((predicate *)bb->aux);
+      bb->aux = NULL;
+      FOR_EACH_EDGE (e, ei, bb->succs)
+	{
+	  if (e->aux)
+	    edge_predicate_pool.remove ((predicate *) e->aux);
+	  e->aux = NULL;
+	}
+    }
+  ipa_fn_summaries->get (node)->time = time;
+  ipa_fn_summaries->get (node)->self_size = size;
+  nonconstant_names.release ();
+  ipa_release_body_info (&fbi);
+  if (opt_for_fn (node->decl, optimize))
+    {
+      if (!early)
+        loop_optimizer_finalize ();
+      else if (!ipa_edge_args_sum)
+	ipa_free_all_node_params ();
+      free_dominance_info (CDI_DOMINATORS);
+    }
+  if (dump_file)
+    {
+      fprintf (dump_file, "\n");
+      ipa_dump_fn_summary (dump_file, node);
+    }
+}
+
+
+/* Compute function summary.
+   EARLY is true when we compute parameters during early opts.  */
+
+void
+compute_fn_summary (struct cgraph_node *node, bool early)
+{
+  HOST_WIDE_INT self_stack_size;
+  struct cgraph_edge *e;
+  struct ipa_fn_summary *info;
+
+  gcc_assert (!node->global.inlined_to);
+
+  if (!ipa_fn_summaries)
+    ipa_fn_summary_alloc ();
+
+  info = ipa_fn_summaries->get (node);
+  info->reset (node);
+
+  /* Estimate the stack size for the function if we're optimizing.  */
+  self_stack_size = optimize && !node->thunk.thunk_p
+		    ? estimated_stack_frame_size (node) : 0;
+  info->estimated_self_stack_size = self_stack_size;
+  info->estimated_stack_size = self_stack_size;
+  info->stack_frame_offset = 0;
+
+  if (node->thunk.thunk_p)
+    {
+      struct ipa_call_summary *es = ipa_call_summaries->get (node->callees);
+      predicate t = true;
+
+      node->local.can_change_signature = false;
+      es->call_stmt_size = eni_size_weights.call_cost;
+      es->call_stmt_time = eni_time_weights.call_cost;
+      info->account_size_time (ipa_fn_summary::size_scale * 2, 2, t, t);
+      t = predicate::not_inlined ();
+      info->account_size_time (2 * ipa_fn_summary::size_scale, 0, t, t);
+      ipa_update_overall_fn_summary (node);
+      info->self_size = info->size;
+      /* We can not inline instrumentation clones.  */
+      if (node->thunk.add_pointer_bounds_args)
+	{
+          info->inlinable = false;
+          node->callees->inline_failed = CIF_CHKP;
+	}
+      else
+        info->inlinable = true;
+    }
+  else
+    {
+       /* Even is_gimple_min_invariant rely on current_function_decl.  */
+       push_cfun (DECL_STRUCT_FUNCTION (node->decl));
+
+       /* Can this function be inlined at all?  */
+       if (!opt_for_fn (node->decl, optimize)
+	   && !lookup_attribute ("always_inline",
+				 DECL_ATTRIBUTES (node->decl)))
+	 info->inlinable = false;
+       else
+	 info->inlinable = tree_inlinable_function_p (node->decl);
+
+       info->contains_cilk_spawn = fn_contains_cilk_spawn_p (cfun);
+
+       /* Type attributes can use parameter indices to describe them.  */
+       if (TYPE_ATTRIBUTES (TREE_TYPE (node->decl)))
+	 node->local.can_change_signature = false;
+       else
+	 {
+	   /* Otherwise, inlinable functions always can change signature.  */
+	   if (info->inlinable)
+	     node->local.can_change_signature = true;
+	   else
+	     {
+	       /* Functions calling builtin_apply can not change signature.  */
+	       for (e = node->callees; e; e = e->next_callee)
+		 {
+		   tree cdecl = e->callee->decl;
+		   if (DECL_BUILT_IN (cdecl)
+		       && DECL_BUILT_IN_CLASS (cdecl) == BUILT_IN_NORMAL
+		       && (DECL_FUNCTION_CODE (cdecl) == BUILT_IN_APPLY_ARGS
+			   || DECL_FUNCTION_CODE (cdecl) == BUILT_IN_VA_START))
+		     break;
+		 }
+	       node->local.can_change_signature = !e;
+	     }
+	 }
+       /* Functions called by instrumentation thunk can't change signature
+	  because instrumentation thunk modification is not supported.  */
+       if (node->local.can_change_signature)
+	 for (e = node->callers; e; e = e->next_caller)
+	   if (e->caller->thunk.thunk_p
+	       && e->caller->thunk.add_pointer_bounds_args)
+	     {
+	       node->local.can_change_signature = false;
+	       break;
+	     }
+       analyze_function_body (node, early);
+       pop_cfun ();
+     }
+  for (e = node->callees; e; e = e->next_callee)
+    if (e->callee->comdat_local_p ())
+      break;
+  node->calls_comdat_local = (e != NULL);
+
+  /* Inlining characteristics are maintained by the cgraph_mark_inline.  */
+  info->size = info->self_size;
+  info->stack_frame_offset = 0;
+  info->estimated_stack_size = info->estimated_self_stack_size;
+
+  /* Code above should compute exactly the same result as
+     ipa_update_overall_fn_summary but because computation happens in
+     different order the roundoff errors result in slight changes.  */
+  ipa_update_overall_fn_summary (node);
+  gcc_assert (info->size == info->self_size);
+}
+
+
+/* Compute parameters of functions used by inliner using
+   current_function_decl.  */
+
+static unsigned int
+compute_fn_summary_for_current (void)
+{
+  compute_fn_summary (cgraph_node::get (current_function_decl), true);
+  return 0;
+}
+
+/* Estimate benefit devirtualizing indirect edge IE, provided KNOWN_VALS,
+   KNOWN_CONTEXTS and KNOWN_AGGS.  */
+
+static bool
+estimate_edge_devirt_benefit (struct cgraph_edge *ie,
+			      int *size, int *time,
+			      vec<tree> known_vals,
+			      vec<ipa_polymorphic_call_context> known_contexts,
+			      vec<ipa_agg_jump_function_p> known_aggs)
+{
+  tree target;
+  struct cgraph_node *callee;
+  struct ipa_fn_summary *isummary;
+  enum availability avail;
+  bool speculative;
+
+  if (!known_vals.exists () && !known_contexts.exists ())
+    return false;
+  if (!opt_for_fn (ie->caller->decl, flag_indirect_inlining))
+    return false;
+
+  target = ipa_get_indirect_edge_target (ie, known_vals, known_contexts,
+					 known_aggs, &speculative);
+  if (!target || speculative)
+    return false;
+
+  /* Account for difference in cost between indirect and direct calls.  */
+  *size -= (eni_size_weights.indirect_call_cost - eni_size_weights.call_cost);
+  *time -= (eni_time_weights.indirect_call_cost - eni_time_weights.call_cost);
+  gcc_checking_assert (*time >= 0);
+  gcc_checking_assert (*size >= 0);
+
+  callee = cgraph_node::get (target);
+  if (!callee || !callee->definition)
+    return false;
+  callee = callee->function_symbol (&avail);
+  if (avail < AVAIL_AVAILABLE)
+    return false;
+  isummary = ipa_fn_summaries->get (callee);
+  return isummary->inlinable;
+}
+
+/* Increase SIZE, MIN_SIZE (if non-NULL) and TIME for size and time needed to
+   handle edge E with probability PROB.
+   Set HINTS if edge may be devirtualized.
+   KNOWN_VALS, KNOWN_AGGS and KNOWN_CONTEXTS describe context of the call
+   site.  */
+
+static inline void
+estimate_edge_size_and_time (struct cgraph_edge *e, int *size, int *min_size,
+			     sreal *time,
+			     int prob,
+			     vec<tree> known_vals,
+			     vec<ipa_polymorphic_call_context> known_contexts,
+			     vec<ipa_agg_jump_function_p> known_aggs,
+			     ipa_hints *hints)
+{
+  struct ipa_call_summary *es = ipa_call_summaries->get (e);
+  int call_size = es->call_stmt_size;
+  int call_time = es->call_stmt_time;
+  int cur_size;
+  if (!e->callee
+      && estimate_edge_devirt_benefit (e, &call_size, &call_time,
+				       known_vals, known_contexts, known_aggs)
+      && hints && e->maybe_hot_p ())
+    *hints |= INLINE_HINT_indirect_call;
+  cur_size = call_size * ipa_fn_summary::size_scale;
+  *size += cur_size;
+  if (min_size)
+    *min_size += cur_size;
+  if (prob == REG_BR_PROB_BASE)
+    *time += ((sreal)(call_time * e->frequency)) / CGRAPH_FREQ_BASE;
+  else
+    *time += ((sreal)call_time) * (prob * e->frequency)
+	      / (CGRAPH_FREQ_BASE * REG_BR_PROB_BASE);
+}
+
+
+
+/* Increase SIZE, MIN_SIZE and TIME for size and time needed to handle all
+   calls in NODE.  POSSIBLE_TRUTHS, KNOWN_VALS, KNOWN_AGGS and KNOWN_CONTEXTS
+   describe context of the call site.  */
+
+static void
+estimate_calls_size_and_time (struct cgraph_node *node, int *size,
+			      int *min_size, sreal *time,
+			      ipa_hints *hints,
+			      clause_t possible_truths,
+			      vec<tree> known_vals,
+			      vec<ipa_polymorphic_call_context> known_contexts,
+			      vec<ipa_agg_jump_function_p> known_aggs)
+{
+  struct cgraph_edge *e;
+  for (e = node->callees; e; e = e->next_callee)
+    {
+      struct ipa_call_summary *es = ipa_call_summaries->get (e);
+
+      /* Do not care about zero sized builtins.  */
+      if (e->inline_failed && !es->call_stmt_size)
+	{
+	  gcc_checking_assert (!es->call_stmt_time);
+	  continue;
+	}
+      if (!es->predicate
+	  || es->predicate->evaluate (possible_truths))
+	{
+	  if (e->inline_failed)
+	    {
+	      /* Predicates of calls shall not use NOT_CHANGED codes,
+	         sowe do not need to compute probabilities.  */
+	      estimate_edge_size_and_time (e, size,
+					   es->predicate ? NULL : min_size,
+					   time, REG_BR_PROB_BASE,
+					   known_vals, known_contexts,
+					   known_aggs, hints);
+	    }
+	  else
+	    estimate_calls_size_and_time (e->callee, size, min_size, time,
+					  hints,
+					  possible_truths,
+					  known_vals, known_contexts,
+					  known_aggs);
+	}
+    }
+  for (e = node->indirect_calls; e; e = e->next_callee)
+    {
+      struct ipa_call_summary *es = ipa_call_summaries->get (e);
+      if (!es->predicate
+	  || es->predicate->evaluate (possible_truths))
+	estimate_edge_size_and_time (e, size,
+				     es->predicate ? NULL : min_size,
+				     time, REG_BR_PROB_BASE,
+				     known_vals, known_contexts, known_aggs,
+				     hints);
+    }
+}
+
+
+/* Estimate size and time needed to execute NODE assuming
+   POSSIBLE_TRUTHS clause, and KNOWN_VALS, KNOWN_AGGS and KNOWN_CONTEXTS
+   information about NODE's arguments.  If non-NULL use also probability
+   information present in INLINE_PARAM_SUMMARY vector.
+   Additionally detemine hints determined by the context.  Finally compute
+   minimal size needed for the call that is independent on the call context and
+   can be used for fast estimates.  Return the values in RET_SIZE,
+   RET_MIN_SIZE, RET_TIME and RET_HINTS.  */
+
+void
+estimate_node_size_and_time (struct cgraph_node *node,
+			     clause_t possible_truths,
+			     clause_t nonspec_possible_truths,
+			     vec<tree> known_vals,
+			     vec<ipa_polymorphic_call_context> known_contexts,
+			     vec<ipa_agg_jump_function_p> known_aggs,
+			     int *ret_size, int *ret_min_size,
+			     sreal *ret_time,
+			     sreal *ret_nonspecialized_time,
+			     ipa_hints *ret_hints,
+			     vec<inline_param_summary>
+			     inline_param_summary)
+{
+  struct ipa_fn_summary *info = ipa_fn_summaries->get (node);
+  size_time_entry *e;
+  int size = 0;
+  sreal time = 0;
+  int min_size = 0;
+  ipa_hints hints = 0;
+  int i;
+
+  if (dump_file && (dump_flags & TDF_DETAILS))
+    {
+      bool found = false;
+      fprintf (dump_file, "   Estimating body: %s/%i\n"
+	       "   Known to be false: ", node->name (),
+	       node->order);
+
+      for (i = predicate::not_inlined_condition;
+	   i < (predicate::first_dynamic_condition
+		+ (int) vec_safe_length (info->conds)); i++)
+	if (!(possible_truths & (1 << i)))
+	  {
+	    if (found)
+	      fprintf (dump_file, ", ");
+	    found = true;
+	    dump_condition (dump_file, info->conds, i);
+	  }
+    }
+
+  estimate_calls_size_and_time (node, &size, &min_size, &time, &hints, possible_truths,
+				known_vals, known_contexts, known_aggs);
+  sreal nonspecialized_time = time;
+
+  for (i = 0; vec_safe_iterate (info->size_time_table, i, &e); i++)
+    {
+      bool exec = e->exec_predicate.evaluate (nonspec_possible_truths);
+
+      /* Because predicates are conservative, it can happen that nonconst is 1
+	 but exec is 0.  */
+      if (exec)
+        {
+          bool nonconst = e->nonconst_predicate.evaluate (possible_truths);
+
+	  gcc_checking_assert (e->time >= 0);
+	  gcc_checking_assert (time >= 0);
+
+	  /* We compute specialized size only because size of nonspecialized
+	     copy is context independent.
+
+	     The difference between nonspecialized execution and specialized is
+	     that nonspecialized is not going to have optimized out computations
+	     known to be constant in a specialized setting.  */
+	  if (nonconst)
+	    size += e->size;
+	  nonspecialized_time += e->time;
+	  if (!nonconst)
+	    ;
+	  else if (!inline_param_summary.exists ())
+	    {
+	      if (nonconst)
+	        time += e->time;
+	    }
+	  else
+	    {
+	      int prob = e->nonconst_predicate.probability 
+					       (info->conds, possible_truths,
+					        inline_param_summary);
+	      gcc_checking_assert (prob >= 0);
+	      gcc_checking_assert (prob <= REG_BR_PROB_BASE);
+	      time += e->time * prob / REG_BR_PROB_BASE;
+	    }
+	  gcc_checking_assert (time >= 0);
+        }
+     }
+  gcc_checking_assert ((*info->size_time_table)[0].exec_predicate == true);
+  gcc_checking_assert ((*info->size_time_table)[0].nonconst_predicate == true);
+  min_size = (*info->size_time_table)[0].size;
+  gcc_checking_assert (size >= 0);
+  gcc_checking_assert (time >= 0);
+  /* nonspecialized_time should be always bigger than specialized time.
+     Roundoff issues however may get into the way.  */
+  gcc_checking_assert ((nonspecialized_time - time) >= -1);
+
+  /* Roundoff issues may make specialized time bigger than nonspecialized
+     time.  We do not really want that to happen because some heurstics
+     may get confused by seeing negative speedups.  */
+  if (time > nonspecialized_time)
+    time = nonspecialized_time;
+
+  if (info->loop_iterations
+      && !info->loop_iterations->evaluate (possible_truths))
+    hints |= INLINE_HINT_loop_iterations;
+  if (info->loop_stride
+      && !info->loop_stride->evaluate (possible_truths))
+    hints |= INLINE_HINT_loop_stride;
+  if (info->array_index
+      && !info->array_index->evaluate (possible_truths))
+    hints |= INLINE_HINT_array_index;
+  if (info->scc_no)
+    hints |= INLINE_HINT_in_scc;
+  if (DECL_DECLARED_INLINE_P (node->decl))
+    hints |= INLINE_HINT_declared_inline;
+
+  size = RDIV (size, ipa_fn_summary::size_scale);
+  min_size = RDIV (min_size, ipa_fn_summary::size_scale);
+
+  if (dump_file && (dump_flags & TDF_DETAILS))
+    fprintf (dump_file, "\n   size:%i time:%f nonspec time:%f\n", (int) size,
+	     time.to_double (), nonspecialized_time.to_double ());
+  if (ret_time)
+    *ret_time = time;
+  if (ret_nonspecialized_time)
+    *ret_nonspecialized_time = nonspecialized_time;
+  if (ret_size)
+    *ret_size = size;
+  if (ret_min_size)
+    *ret_min_size = min_size;
+  if (ret_hints)
+    *ret_hints = hints;
+  return;
+}
+
+
+/* Estimate size and time needed to execute callee of EDGE assuming that
+   parameters known to be constant at caller of EDGE are propagated.
+   KNOWN_VALS and KNOWN_CONTEXTS are vectors of assumed known constant values
+   and types for parameters.  */
+
+void
+estimate_ipcp_clone_size_and_time (struct cgraph_node *node,
+				   vec<tree> known_vals,
+				   vec<ipa_polymorphic_call_context>
+				   known_contexts,
+				   vec<ipa_agg_jump_function_p> known_aggs,
+				   int *ret_size, sreal *ret_time,
+				   sreal *ret_nonspec_time,
+				   ipa_hints *hints)
+{
+  clause_t clause, nonspec_clause;
+
+  evaluate_conditions_for_known_args (node, false, known_vals, known_aggs,
+				      &clause, &nonspec_clause);
+  estimate_node_size_and_time (node, clause, nonspec_clause,
+			       known_vals, known_contexts,
+			       known_aggs, ret_size, NULL, ret_time,
+			       ret_nonspec_time, hints, vNULL);
+}
+
+
+/* Update summary information of inline clones after inlining.
+   Compute peak stack usage.  */
+
+static void
+inline_update_callee_summaries (struct cgraph_node *node, int depth)
+{
+  struct cgraph_edge *e;
+  struct ipa_fn_summary *callee_info = ipa_fn_summaries->get (node);
+  struct ipa_fn_summary *caller_info = ipa_fn_summaries->get (node->callers->caller);
+  HOST_WIDE_INT peak;
+
+  callee_info->stack_frame_offset
+    = caller_info->stack_frame_offset
+    + caller_info->estimated_self_stack_size;
+  peak = callee_info->stack_frame_offset
+    + callee_info->estimated_self_stack_size;
+  if (ipa_fn_summaries->get (node->global.inlined_to)->estimated_stack_size < peak)
+      ipa_fn_summaries->get (node->global.inlined_to)->estimated_stack_size = peak;
+  ipa_propagate_frequency (node);
+  for (e = node->callees; e; e = e->next_callee)
+    {
+      if (!e->inline_failed)
+	inline_update_callee_summaries (e->callee, depth);
+      ipa_call_summaries->get (e)->loop_depth += depth;
+    }
+  for (e = node->indirect_calls; e; e = e->next_callee)
+    ipa_call_summaries->get (e)->loop_depth += depth;
+}
+
+/* Update change_prob of EDGE after INLINED_EDGE has been inlined.
+   When functoin A is inlined in B and A calls C with parameter that
+   changes with probability PROB1 and C is known to be passthroug
+   of argument if B that change with probability PROB2, the probability
+   of change is now PROB1*PROB2.  */
+
+static void
+remap_edge_change_prob (struct cgraph_edge *inlined_edge,
+			struct cgraph_edge *edge)
+{
+  if (ipa_node_params_sum)
+    {
+      int i;
+      struct ipa_edge_args *args = IPA_EDGE_REF (edge);
+      struct ipa_call_summary *es = ipa_call_summaries->get (edge);
+      struct ipa_call_summary *inlined_es
+	= ipa_call_summaries->get (inlined_edge);
+
+      for (i = 0; i < ipa_get_cs_argument_count (args); i++)
+	{
+	  struct ipa_jump_func *jfunc = ipa_get_ith_jump_func (args, i);
+	  if (jfunc->type == IPA_JF_PASS_THROUGH
+	      || jfunc->type == IPA_JF_ANCESTOR)
+	    {
+	      int id = jfunc->type == IPA_JF_PASS_THROUGH
+		       ? ipa_get_jf_pass_through_formal_id (jfunc)
+		       : ipa_get_jf_ancestor_formal_id (jfunc);
+	      if (id < (int) inlined_es->param.length ())
+		{
+		  int prob1 = es->param[i].change_prob;
+		  int prob2 = inlined_es->param[id].change_prob;
+		  int prob = combine_probabilities (prob1, prob2);
+
+		  if (prob1 && prob2 && !prob)
+		    prob = 1;
+
+		  es->param[i].change_prob = prob;
+		}
+	    }
+	}
+    }
+}
+
+/* Update edge summaries of NODE after INLINED_EDGE has been inlined.
+
+   Remap predicates of callees of NODE.  Rest of arguments match
+   remap_predicate.
+
+   Also update change probabilities.  */
+
+static void
+remap_edge_summaries (struct cgraph_edge *inlined_edge,
+		      struct cgraph_node *node,
+		      struct ipa_fn_summary *info,
+		      struct ipa_fn_summary *callee_info,
+		      vec<int> operand_map,
+		      vec<int> offset_map,
+		      clause_t possible_truths,
+		      predicate *toplev_predicate)
+{
+  struct cgraph_edge *e, *next;
+  for (e = node->callees; e; e = next)
+    {
+      struct ipa_call_summary *es = ipa_call_summaries->get (e);
+      predicate p;
+      next = e->next_callee;
+
+      if (e->inline_failed)
+	{
+	  remap_edge_change_prob (inlined_edge, e);
+
+	  if (es->predicate)
+	    {
+	      p = es->predicate->remap_after_inlining
+				     (info, callee_info, operand_map,
+				      offset_map, possible_truths,
+				      *toplev_predicate);
+	      edge_set_predicate (e, &p);
+	    }
+	  else
+	    edge_set_predicate (e, toplev_predicate);
+	}
+      else
+	remap_edge_summaries (inlined_edge, e->callee, info, callee_info,
+			      operand_map, offset_map, possible_truths,
+			      toplev_predicate);
+    }
+  for (e = node->indirect_calls; e; e = next)
+    {
+      struct ipa_call_summary *es = ipa_call_summaries->get (e);
+      predicate p;
+      next = e->next_callee;
+
+      remap_edge_change_prob (inlined_edge, e);
+      if (es->predicate)
+	{
+	  p = es->predicate->remap_after_inlining
+				 (info, callee_info, operand_map, offset_map,
+			          possible_truths, *toplev_predicate);
+	  edge_set_predicate (e, &p);
+	}
+      else
+	edge_set_predicate (e, toplev_predicate);
+    }
+}
+
+/* Same as remap_predicate, but set result into hint *HINT.  */
+
+static void
+remap_hint_predicate (struct ipa_fn_summary *info,
+		      struct ipa_fn_summary *callee_info,
+		      predicate **hint,
+		      vec<int> operand_map,
+		      vec<int> offset_map,
+		      clause_t possible_truths,
+		      predicate *toplev_predicate)
+{
+  predicate p;
+
+  if (!*hint)
+    return;
+  p = (*hint)->remap_after_inlining
+			 (info, callee_info,
+			  operand_map, offset_map,
+			  possible_truths, *toplev_predicate);
+  if (p != false && p != true)
+    {
+      if (!*hint)
+	set_hint_predicate (hint, p);
+      else
+	**hint &= p;
+    }
+}
+
+/* We inlined EDGE.  Update summary of the function we inlined into.  */
+
+void
+ipa_merge_fn_summary_after_inlining (struct cgraph_edge *edge)
+{
+  struct ipa_fn_summary *callee_info = ipa_fn_summaries->get (edge->callee);
+  struct cgraph_node *to = (edge->caller->global.inlined_to
+			    ? edge->caller->global.inlined_to : edge->caller);
+  struct ipa_fn_summary *info = ipa_fn_summaries->get (to);
+  clause_t clause = 0;	/* not_inline is known to be false.  */
+  size_time_entry *e;
+  vec<int> operand_map = vNULL;
+  vec<int> offset_map = vNULL;
+  int i;
+  predicate toplev_predicate;
+  predicate true_p = true;
+  struct ipa_call_summary *es = ipa_call_summaries->get (edge);
+
+  if (es->predicate)
+    toplev_predicate = *es->predicate;
+  else
+    toplev_predicate = true;
+
+  info->fp_expressions |= callee_info->fp_expressions;
+
+  if (callee_info->conds)
+    evaluate_properties_for_edge (edge, true, &clause, NULL, NULL, NULL, NULL);
+  if (ipa_node_params_sum && callee_info->conds)
+    {
+      struct ipa_edge_args *args = IPA_EDGE_REF (edge);
+      int count = ipa_get_cs_argument_count (args);
+      int i;
+
+      if (count)
+	{
+	  operand_map.safe_grow_cleared (count);
+	  offset_map.safe_grow_cleared (count);
+	}
+      for (i = 0; i < count; i++)
+	{
+	  struct ipa_jump_func *jfunc = ipa_get_ith_jump_func (args, i);
+	  int map = -1;
+
+	  /* TODO: handle non-NOPs when merging.  */
+	  if (jfunc->type == IPA_JF_PASS_THROUGH)
+	    {
+	      if (ipa_get_jf_pass_through_operation (jfunc) == NOP_EXPR)
+		map = ipa_get_jf_pass_through_formal_id (jfunc);
+	      if (!ipa_get_jf_pass_through_agg_preserved (jfunc))
+		offset_map[i] = -1;
+	    }
+	  else if (jfunc->type == IPA_JF_ANCESTOR)
+	    {
+	      HOST_WIDE_INT offset = ipa_get_jf_ancestor_offset (jfunc);
+	      if (offset >= 0 && offset < INT_MAX)
+		{
+		  map = ipa_get_jf_ancestor_formal_id (jfunc);
+		  if (!ipa_get_jf_ancestor_agg_preserved (jfunc))
+		    offset = -1;
+		  offset_map[i] = offset;
+		}
+	    }
+	  operand_map[i] = map;
+	  gcc_assert (map < ipa_get_param_count (IPA_NODE_REF (to)));
+	}
+    }
+  for (i = 0; vec_safe_iterate (callee_info->size_time_table, i, &e); i++)
+    {
+      predicate p;
+      p = e->exec_predicate.remap_after_inlining
+			     (info, callee_info, operand_map,
+			      offset_map, clause,
+			      toplev_predicate);
+      predicate nonconstp;
+      nonconstp = e->nonconst_predicate.remap_after_inlining
+				     (info, callee_info, operand_map,
+				      offset_map, clause,
+				      toplev_predicate);
+      if (p != false && nonconstp != false)
+	{
+	  sreal add_time = ((sreal)e->time * edge->frequency) / CGRAPH_FREQ_BASE;
+	  int prob = e->nonconst_predicate.probability (callee_info->conds,
+							clause, es->param);
+	  add_time = add_time * prob / REG_BR_PROB_BASE;
+	  if (prob != REG_BR_PROB_BASE
+	      && dump_file && (dump_flags & TDF_DETAILS))
+	    {
+	      fprintf (dump_file, "\t\tScaling time by probability:%f\n",
+		       (double) prob / REG_BR_PROB_BASE);
+	    }
+	  info->account_size_time (e->size, add_time, p, nonconstp);
+	}
+    }
+  remap_edge_summaries (edge, edge->callee, info, callee_info, operand_map,
+			offset_map, clause, &toplev_predicate);
+  remap_hint_predicate (info, callee_info,
+			&callee_info->loop_iterations,
+			operand_map, offset_map, clause, &toplev_predicate);
+  remap_hint_predicate (info, callee_info,
+			&callee_info->loop_stride,
+			operand_map, offset_map, clause, &toplev_predicate);
+  remap_hint_predicate (info, callee_info,
+			&callee_info->array_index,
+			operand_map, offset_map, clause, &toplev_predicate);
+
+  inline_update_callee_summaries (edge->callee,
+				  ipa_call_summaries->get (edge)->loop_depth);
+
+  /* We do not maintain predicates of inlined edges, free it.  */
+  edge_set_predicate (edge, &true_p);
+  /* Similarly remove param summaries.  */
+  es->param.release ();
+  operand_map.release ();
+  offset_map.release ();
+}
+
+/* For performance reasons ipa_merge_fn_summary_after_inlining is not updating overall size
+   and time.  Recompute it.  */
+
+void
+ipa_update_overall_fn_summary (struct cgraph_node *node)
+{
+  struct ipa_fn_summary *info = ipa_fn_summaries->get (node);
+  size_time_entry *e;
+  int i;
+
+  info->size = 0;
+  info->time = 0;
+  for (i = 0; vec_safe_iterate (info->size_time_table, i, &e); i++)
+    {
+      info->size += e->size;
+      info->time += e->time;
+    }
+  estimate_calls_size_and_time (node, &info->size, &info->min_size,
+				&info->time, NULL,
+				~(clause_t) (1 << predicate::false_condition),
+				vNULL, vNULL, vNULL);
+  info->size = (info->size + ipa_fn_summary::size_scale / 2) / ipa_fn_summary::size_scale;
+}
+
+
+/* This function performs intraprocedural analysis in NODE that is required to
+   inline indirect calls.  */
+
+static void
+inline_indirect_intraprocedural_analysis (struct cgraph_node *node)
+{
+  ipa_analyze_node (node);
+  if (dump_file && (dump_flags & TDF_DETAILS))
+    {
+      ipa_print_node_params (dump_file, node);
+      ipa_print_node_jump_functions (dump_file, node);
+    }
+}
+
+
+/* Note function body size.  */
+
+void
+inline_analyze_function (struct cgraph_node *node)
+{
+  push_cfun (DECL_STRUCT_FUNCTION (node->decl));
+
+  if (dump_file)
+    fprintf (dump_file, "\nAnalyzing function: %s/%u\n",
+	     node->name (), node->order);
+  if (opt_for_fn (node->decl, optimize) && !node->thunk.thunk_p)
+    inline_indirect_intraprocedural_analysis (node);
+  compute_fn_summary (node, false);
+  if (!optimize)
+    {
+      struct cgraph_edge *e;
+      for (e = node->callees; e; e = e->next_callee)
+	e->inline_failed = CIF_FUNCTION_NOT_OPTIMIZED;
+      for (e = node->indirect_calls; e; e = e->next_callee)
+	e->inline_failed = CIF_FUNCTION_NOT_OPTIMIZED;
+    }
+
+  pop_cfun ();
+}
+
+
+/* Called when new function is inserted to callgraph late.  */
+
+void
+ipa_fn_summary_t::insert (struct cgraph_node *node, ipa_fn_summary *)
+{
+  inline_analyze_function (node);
+}
+
+/* Note function body size.  */
+
+static void
+ipa_fn_summary_generate (void)
+{
+  struct cgraph_node *node;
+
+  FOR_EACH_DEFINED_FUNCTION (node)
+    if (DECL_STRUCT_FUNCTION (node->decl))
+      node->local.versionable = tree_versionable_function_p (node->decl);
+
+  ipa_fn_summary_alloc ();
+
+  ipa_fn_summaries->enable_insertion_hook ();
+
+  ipa_register_cgraph_hooks ();
+
+  FOR_EACH_DEFINED_FUNCTION (node)
+    if (!node->alias
+	&& (flag_generate_lto || flag_generate_offload|| flag_wpa
+	    || opt_for_fn (node->decl, optimize)))
+      inline_analyze_function (node);
+}
+
+
+/* Write inline summary for edge E to OB.  */
+
+static void
+read_ipa_call_summary (struct lto_input_block *ib, struct cgraph_edge *e)
+{
+  struct ipa_call_summary *es = ipa_call_summaries->get (e);
+  predicate p;
+  int length, i;
+
+  es->call_stmt_size = streamer_read_uhwi (ib);
+  es->call_stmt_time = streamer_read_uhwi (ib);
+  es->loop_depth = streamer_read_uhwi (ib);
+  p.stream_in (ib);
+  edge_set_predicate (e, &p);
+  length = streamer_read_uhwi (ib);
+  if (length)
+    {
+      es->param.safe_grow_cleared (length);
+      for (i = 0; i < length; i++)
+	es->param[i].change_prob = streamer_read_uhwi (ib);
+    }
+}
+
+
+/* Stream in inline summaries from the section.  */
+
+static void
+inline_read_section (struct lto_file_decl_data *file_data, const char *data,
+		     size_t len)
+{
+  const struct lto_function_header *header =
+    (const struct lto_function_header *) data;
+  const int cfg_offset = sizeof (struct lto_function_header);
+  const int main_offset = cfg_offset + header->cfg_size;
+  const int string_offset = main_offset + header->main_size;
+  struct data_in *data_in;
+  unsigned int i, count2, j;
+  unsigned int f_count;
+
+  lto_input_block ib ((const char *) data + main_offset, header->main_size,
+		      file_data->mode_table);
+
+  data_in =
+    lto_data_in_create (file_data, (const char *) data + string_offset,
+			header->string_size, vNULL);
+  f_count = streamer_read_uhwi (&ib);
+  for (i = 0; i < f_count; i++)
+    {
+      unsigned int index;
+      struct cgraph_node *node;
+      struct ipa_fn_summary *info;
+      lto_symtab_encoder_t encoder;
+      struct bitpack_d bp;
+      struct cgraph_edge *e;
+      predicate p;
+
+      index = streamer_read_uhwi (&ib);
+      encoder = file_data->symtab_node_encoder;
+      node = dyn_cast<cgraph_node *> (lto_symtab_encoder_deref (encoder,
+								index));
+      info = ipa_fn_summaries->get (node);
+
+      info->estimated_stack_size
+	= info->estimated_self_stack_size = streamer_read_uhwi (&ib);
+      info->size = info->self_size = streamer_read_uhwi (&ib);
+      info->time = sreal::stream_in (&ib);
+
+      bp = streamer_read_bitpack (&ib);
+      info->inlinable = bp_unpack_value (&bp, 1);
+      info->contains_cilk_spawn = bp_unpack_value (&bp, 1);
+      info->fp_expressions = bp_unpack_value (&bp, 1);
+
+      count2 = streamer_read_uhwi (&ib);
+      gcc_assert (!info->conds);
+      for (j = 0; j < count2; j++)
+	{
+	  struct condition c;
+	  c.operand_num = streamer_read_uhwi (&ib);
+	  c.size = streamer_read_uhwi (&ib);
+	  c.code = (enum tree_code) streamer_read_uhwi (&ib);
+	  c.val = stream_read_tree (&ib, data_in);
+	  bp = streamer_read_bitpack (&ib);
+	  c.agg_contents = bp_unpack_value (&bp, 1);
+	  c.by_ref = bp_unpack_value (&bp, 1);
+	  if (c.agg_contents)
+	    c.offset = streamer_read_uhwi (&ib);
+	  vec_safe_push (info->conds, c);
+	}
+      count2 = streamer_read_uhwi (&ib);
+      gcc_assert (!info->size_time_table);
+      for (j = 0; j < count2; j++)
+	{
+	  struct size_time_entry e;
+
+	  e.size = streamer_read_uhwi (&ib);
+	  e.time = sreal::stream_in (&ib);
+	  e.exec_predicate.stream_in (&ib);
+	  e.nonconst_predicate.stream_in (&ib);
+
+	  vec_safe_push (info->size_time_table, e);
+	}
+
+      p.stream_in (&ib);
+      set_hint_predicate (&info->loop_iterations, p);
+      p.stream_in (&ib);
+      set_hint_predicate (&info->loop_stride, p);
+      p.stream_in (&ib);
+      set_hint_predicate (&info->array_index, p);
+      for (e = node->callees; e; e = e->next_callee)
+	read_ipa_call_summary (&ib, e);
+      for (e = node->indirect_calls; e; e = e->next_callee)
+	read_ipa_call_summary (&ib, e);
+    }
+
+  lto_free_section_data (file_data, LTO_section_ipa_fn_summary, NULL, data,
+			 len);
+  lto_data_in_delete (data_in);
+}
+
+
+/* Read inline summary.  Jump functions are shared among ipa-cp
+   and inliner, so when ipa-cp is active, we don't need to write them
+   twice.  */
+
+static void
+ipa_fn_summary_read (void)
+{
+  struct lto_file_decl_data **file_data_vec = lto_get_file_decl_data ();
+  struct lto_file_decl_data *file_data;
+  unsigned int j = 0;
+
+  ipa_fn_summary_alloc ();
+
+  while ((file_data = file_data_vec[j++]))
+    {
+      size_t len;
+      const char *data = lto_get_section_data (file_data,
+					       LTO_section_ipa_fn_summary,
+					       NULL, &len);
+      if (data)
+	inline_read_section (file_data, data, len);
+      else
+	/* Fatal error here.  We do not want to support compiling ltrans units
+	   with different version of compiler or different flags than the WPA
+	   unit, so this should never happen.  */
+	fatal_error (input_location,
+		     "ipa inline summary is missing in input file");
+    }
+  ipa_register_cgraph_hooks ();
+  if (!flag_ipa_cp)
+    ipa_prop_read_jump_functions ();
+
+  gcc_assert (ipa_fn_summaries);
+  ipa_fn_summaries->enable_insertion_hook ();
+}
+
+
+/* Write inline summary for edge E to OB.  */
+
+static void
+write_ipa_call_summary (struct output_block *ob, struct cgraph_edge *e)
+{
+  struct ipa_call_summary *es = ipa_call_summaries->get (e);
+  int i;
+
+  streamer_write_uhwi (ob, es->call_stmt_size);
+  streamer_write_uhwi (ob, es->call_stmt_time);
+  streamer_write_uhwi (ob, es->loop_depth);
+  if (es->predicate)
+    es->predicate->stream_out (ob);
+  else
+    streamer_write_uhwi (ob, 0);
+  streamer_write_uhwi (ob, es->param.length ());
+  for (i = 0; i < (int) es->param.length (); i++)
+    streamer_write_uhwi (ob, es->param[i].change_prob);
+}
+
+
+/* Write inline summary for node in SET.
+   Jump functions are shared among ipa-cp and inliner, so when ipa-cp is
+   active, we don't need to write them twice.  */
+
+static void
+ipa_fn_summary_write (void)
+{
+  struct output_block *ob = create_output_block (LTO_section_ipa_fn_summary);
+  lto_symtab_encoder_t encoder = ob->decl_state->symtab_node_encoder;
+  unsigned int count = 0;
+  int i;
+
+  for (i = 0; i < lto_symtab_encoder_size (encoder); i++)
+    {
+      symtab_node *snode = lto_symtab_encoder_deref (encoder, i);
+      cgraph_node *cnode = dyn_cast <cgraph_node *> (snode);
+      if (cnode && cnode->definition && !cnode->alias)
+	count++;
+    }
+  streamer_write_uhwi (ob, count);
+
+  for (i = 0; i < lto_symtab_encoder_size (encoder); i++)
+    {
+      symtab_node *snode = lto_symtab_encoder_deref (encoder, i);
+      cgraph_node *cnode = dyn_cast <cgraph_node *> (snode);
+      if (cnode && cnode->definition && !cnode->alias)
+	{
+	  struct ipa_fn_summary *info = ipa_fn_summaries->get (cnode);
+	  struct bitpack_d bp;
+	  struct cgraph_edge *edge;
+	  int i;
+	  size_time_entry *e;
+	  struct condition *c;
+
+	  streamer_write_uhwi (ob, lto_symtab_encoder_encode (encoder, cnode));
+	  streamer_write_hwi (ob, info->estimated_self_stack_size);
+	  streamer_write_hwi (ob, info->self_size);
+	  info->time.stream_out (ob);
+	  bp = bitpack_create (ob->main_stream);
+	  bp_pack_value (&bp, info->inlinable, 1);
+	  bp_pack_value (&bp, info->contains_cilk_spawn, 1);
+	  bp_pack_value (&bp, info->fp_expressions, 1);
+	  streamer_write_bitpack (&bp);
+	  streamer_write_uhwi (ob, vec_safe_length (info->conds));
+	  for (i = 0; vec_safe_iterate (info->conds, i, &c); i++)
+	    {
+	      streamer_write_uhwi (ob, c->operand_num);
+	      streamer_write_uhwi (ob, c->size);
+	      streamer_write_uhwi (ob, c->code);
+	      stream_write_tree (ob, c->val, true);
+	      bp = bitpack_create (ob->main_stream);
+	      bp_pack_value (&bp, c->agg_contents, 1);
+	      bp_pack_value (&bp, c->by_ref, 1);
+	      streamer_write_bitpack (&bp);
+	      if (c->agg_contents)
+		streamer_write_uhwi (ob, c->offset);
+	    }
+	  streamer_write_uhwi (ob, vec_safe_length (info->size_time_table));
+	  for (i = 0; vec_safe_iterate (info->size_time_table, i, &e); i++)
+	    {
+	      streamer_write_uhwi (ob, e->size);
+	      e->time.stream_out (ob);
+	      e->exec_predicate.stream_out (ob);
+	      e->nonconst_predicate.stream_out (ob);
+	    }
+	  if (info->loop_iterations)
+	    info->loop_iterations->stream_out (ob);
+ 	  else
+	    streamer_write_uhwi (ob, 0);
+	  if (info->loop_stride)
+	    info->loop_stride->stream_out (ob);
+ 	  else
+	    streamer_write_uhwi (ob, 0);
+	  if (info->array_index)
+	    info->array_index->stream_out (ob);
+	  else
+	    streamer_write_uhwi (ob, 0);
+	  for (edge = cnode->callees; edge; edge = edge->next_callee)
+	    write_ipa_call_summary (ob, edge);
+	  for (edge = cnode->indirect_calls; edge; edge = edge->next_callee)
+	    write_ipa_call_summary (ob, edge);
+	}
+    }
+  streamer_write_char_stream (ob->main_stream, 0);
+  produce_asm (ob, NULL);
+  destroy_output_block (ob);
+
+  if (!flag_ipa_cp)
+    ipa_prop_write_jump_functions ();
+}
+
+
+/* Release inline summary.  */
+
+void
+ipa_free_fn_summary (void)
+{
+  struct cgraph_node *node;
+  if (!ipa_call_summaries)
+    return;
+  FOR_EACH_DEFINED_FUNCTION (node)
+    if (!node->alias)
+      ipa_fn_summaries->get (node)->reset (node);
+  ipa_fn_summaries->release ();
+  ipa_fn_summaries = NULL;
+  ipa_call_summaries->release ();
+  delete ipa_call_summaries;
+  ipa_call_summaries = NULL;
+  edge_predicate_pool.release ();
+}
+
+namespace {
+
+const pass_data pass_data_local_fn_summary =
+{
+  GIMPLE_PASS, /* type */
+  "local-fnsummary", /* name */
+  OPTGROUP_INLINE, /* optinfo_flags */
+  TV_INLINE_PARAMETERS, /* tv_id */
+  0, /* properties_required */
+  0, /* properties_provided */
+  0, /* properties_destroyed */
+  0, /* todo_flags_start */
+  0, /* todo_flags_finish */
+};
+
+class pass_local_fn_summary : public gimple_opt_pass
+{
+public:
+  pass_local_fn_summary (gcc::context *ctxt)
+    : gimple_opt_pass (pass_data_local_fn_summary, ctxt)
+  {}
+
+  /* opt_pass methods: */
+  opt_pass * clone () { return new pass_local_fn_summary (m_ctxt); }
+  virtual unsigned int execute (function *)
+    {
+      return compute_fn_summary_for_current ();
+    }
+
+}; // class pass_local_fn_summary
+
+} // anon namespace
+
+gimple_opt_pass *
+make_pass_local_fn_summary (gcc::context *ctxt)
+{
+  return new pass_local_fn_summary (ctxt);
+}
+
+
+/* Free inline summary.  */
+
+namespace {
+
+const pass_data pass_data_ipa_free_fn_summary =
+{
+  SIMPLE_IPA_PASS, /* type */
+  "free-fnsummary", /* name */
+  OPTGROUP_NONE, /* optinfo_flags */
+  TV_IPA_FREE_INLINE_SUMMARY, /* tv_id */
+  0, /* properties_required */
+  0, /* properties_provided */
+  0, /* properties_destroyed */
+  0, /* todo_flags_start */
+  /* Early optimizations may make function unreachable.  We can not
+     remove unreachable functions as part of the ealry opts pass because
+     TODOs are run before subpasses.  Do it here.  */
+  ( TODO_remove_functions | TODO_dump_symtab ), /* todo_flags_finish */
+};
+
+class pass_ipa_free_fn_summary : public simple_ipa_opt_pass
+{
+public:
+  pass_ipa_free_fn_summary (gcc::context *ctxt)
+    : simple_ipa_opt_pass (pass_data_ipa_free_fn_summary, ctxt)
+  {}
+
+  /* opt_pass methods: */
+  virtual unsigned int execute (function *)
+    {
+      ipa_free_fn_summary ();
+      return 0;
+    }
+
+}; // class pass_ipa_free_fn_summary
+
+} // anon namespace
+
+simple_ipa_opt_pass *
+make_pass_ipa_free_fn_summary (gcc::context *ctxt)
+{
+  return new pass_ipa_free_fn_summary (ctxt);
+}
+
+namespace {
+
+const pass_data pass_data_ipa_fn_summary =
+{
+  IPA_PASS, /* type */
+  "fnsummary", /* name */
+  OPTGROUP_INLINE, /* optinfo_flags */
+  TV_IPA_FNSUMMARY, /* tv_id */
+  0, /* properties_required */
+  0, /* properties_provided */
+  0, /* properties_destroyed */
+  0, /* todo_flags_start */
+  ( TODO_dump_symtab ), /* todo_flags_finish */
+};
+
+class pass_ipa_fn_summary : public ipa_opt_pass_d
+{
+public:
+  pass_ipa_fn_summary (gcc::context *ctxt)
+    : ipa_opt_pass_d (pass_data_ipa_fn_summary, ctxt,
+		      ipa_fn_summary_generate, /* generate_summary */
+		      ipa_fn_summary_write, /* write_summary */
+		      ipa_fn_summary_read, /* read_summary */
+		      NULL, /* write_optimization_summary */
+		      NULL, /* read_optimization_summary */
+		      NULL, /* stmt_fixup */
+		      0, /* function_transform_todo_flags_start */
+		      NULL, /* function_transform */
+		      NULL) /* variable_transform */
+  {}
+
+  /* opt_pass methods: */
+  virtual unsigned int execute (function *) { return 0; }
+
+}; // class pass_ipa_fn_summary
+
+} // anon namespace
+
+ipa_opt_pass_d *
+make_pass_ipa_fn_summary (gcc::context *ctxt)
+{
+  return new pass_ipa_fn_summary (ctxt);
+}