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-rw-r--r--gcc/tree-vect-loop.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/gcc/tree-vect-loop.c b/gcc/tree-vect-loop.c
index e5fb434..b4cfad8 100644
--- a/gcc/tree-vect-loop.c
+++ b/gcc/tree-vect-loop.c
@@ -8487,7 +8487,7 @@ update_epilogue_loop_vinfo (class loop *epilogue, tree advance)
Returns scalar epilogue loop if any. */
class loop *
-vect_transform_loop (loop_vec_info loop_vinfo)
+vect_transform_loop (loop_vec_info loop_vinfo, gimple *loop_vectorized_call)
{
class loop *loop = LOOP_VINFO_LOOP (loop_vinfo);
class loop *epilogue = NULL;
@@ -8538,7 +8538,7 @@ vect_transform_loop (loop_vec_info loop_vinfo)
if (LOOP_REQUIRES_VERSIONING (loop_vinfo))
{
class loop *sloop
- = vect_loop_versioning (loop_vinfo);
+ = vect_loop_versioning (loop_vinfo, loop_vectorized_call);
sloop->force_vectorize = false;
check_profitability = false;
}
generated by cgit v1.1 at 2025-08-10 18:08:44 +0000
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/* Tree inlining.
   Copyright (C) 2001-2021 Free Software Foundation, Inc.
   Contributed by Alexandre Oliva <aoliva@redhat.com>

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/>.  */

#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "backend.h"
#include "target.h"
#include "rtl.h"
#include "tree.h"
#include "gimple.h"
#include "cfghooks.h"
#include "tree-pass.h"
#include "ssa.h"
#include "cgraph.h"
#include "tree-pretty-print.h"
#include "diagnostic-core.h"
#include "gimple-predict.h"
#include "fold-const.h"
#include "stor-layout.h"
#include "calls.h"
#include "tree-inline.h"
#include "langhooks.h"
#include "cfganal.h"
#include "tree-iterator.h"
#include "intl.h"
#include "gimple-fold.h"
#include "tree-eh.h"
#include "gimplify.h"
#include "gimple-iterator.h"
#include "gimplify-me.h"
#include "gimple-walk.h"
#include "tree-cfg.h"
#include "tree-into-ssa.h"
#include "tree-dfa.h"
#include "tree-ssa.h"
#include "except.h"
#include "debug.h"
#include "value-prof.h"
#include "cfgloop.h"
#include "builtins.h"
#include "stringpool.h"
#include "attribs.h"
#include "sreal.h"
#include "tree-cfgcleanup.h"
#include "tree-ssa-live.h"
#include "alloc-pool.h"
#include "symbol-summary.h"
#include "symtab-thunks.h"
#include "symtab-clones.h"

/* I'm not real happy about this, but we need to handle gimple and
   non-gimple trees.  */

/* Inlining, Cloning, Versioning, Parallelization

   Inlining: a function body is duplicated, but the PARM_DECLs are
   remapped into VAR_DECLs, and non-void RETURN_EXPRs become
   MODIFY_EXPRs that store to a dedicated returned-value variable.
   The duplicated eh_region info of the copy will later be appended
   to the info for the caller; the eh_region info in copied throwing
   statements and RESX statements are adjusted accordingly.

   Cloning: (only in C++) We have one body for a con/de/structor, and
   multiple function decls, each with a unique parameter list.
   Duplicate the body, using the given splay tree; some parameters
   will become constants (like 0 or 1).

   Versioning: a function body is duplicated and the result is a new
   function rather than into blocks of an existing function as with
   inlining.  Some parameters will become constants.

   Parallelization: a region of a function is duplicated resulting in
   a new function.  Variables may be replaced with complex expressions
   to enable shared variable semantics.

   All of these will simultaneously lookup any callgraph edges.  If
   we're going to inline the duplicated function body, and the given
   function has some cloned callgraph nodes (one for each place this
   function will be inlined) those callgraph edges will be duplicated.
   If we're cloning the body, those callgraph edges will be
   updated to point into the new body.  (Note that the original
   callgraph node and edge list will not be altered.)

   See the CALL_EXPR handling case in copy_tree_body_r ().  */

/* To Do:

   o In order to make inlining-on-trees work, we pessimized
     function-local static constants.  In particular, they are now
     always output, even when not addressed.  Fix this by treating
     function-local static constants just like global static
     constants; the back-end already knows not to output them if they
     are not needed.

   o Provide heuristics to clamp inlining of recursive template
     calls?  */


/* Weights that estimate_num_insns uses to estimate the size of the
   produced code.  */

eni_weights eni_size_weights;

/* Weights that estimate_num_insns uses to estimate the time necessary
   to execute the produced code.  */

eni_weights eni_time_weights;

/* Prototypes.  */

static tree declare_return_variable (copy_body_data *, tree, tree,
				     basic_block);
static void remap_block (tree *, copy_body_data *);
static void copy_bind_expr (tree *, int *, copy_body_data *);
static void declare_inline_vars (tree, tree);
static void remap_save_expr (tree *, hash_map<tree, tree> *, int *);
static void prepend_lexical_block (tree current_block, tree new_block);
static tree copy_result_decl_to_var (tree, copy_body_data *);
static tree copy_decl_maybe_to_var (tree, copy_body_data *);
static gimple_seq remap_gimple_stmt (gimple *, copy_body_data *);
static void insert_init_stmt (copy_body_data *, basic_block, gimple *);

/* Insert a tree->tree mapping for ID.  Despite the name suggests
   that the trees should be variables, it is used for more than that.  */

void
insert_decl_map (copy_body_data *id, tree key, tree value)
{
  id->decl_map->put (key, value);

  /* Always insert an identity map as well.  If we see this same new
     node again, we won't want to duplicate it a second time.  */
  if (key != value)
    id->decl_map->put (value, value);
}

/* If nonzero, we're remapping the contents of inlined debug
   statements.  If negative, an error has occurred, such as a
   reference to a variable that isn't available in the inlined
   context.  */
static int processing_debug_stmt = 0;

/* Construct new SSA name for old NAME. ID is the inline context.  */

static tree
remap_ssa_name (tree name, copy_body_data *id)
{
  tree new_tree, var;
  tree *n;

  gcc_assert (TREE_CODE (name) == SSA_NAME);

  n = id->decl_map->get (name);
  if (n)
    {
      /* WHen we perform edge redirection as part of CFG copy, IPA-SRA can
	 remove an unused LHS from a call statement.  Such LHS can however
	 still appear in debug statements, but their value is lost in this
	 function and we do not want to map them.  */
      if (id->killed_new_ssa_names
	  && id->killed_new_ssa_names->contains (*n))
	{
	  gcc_assert (processing_debug_stmt);
	  processing_debug_stmt = -1;
	  return name;
	}

      return unshare_expr (*n);
    }

  if (processing_debug_stmt)
    {
      if (SSA_NAME_IS_DEFAULT_DEF (name)
	  && TREE_CODE (SSA_NAME_VAR (name)) == PARM_DECL
	  && id->entry_bb == NULL
	  && single_succ_p (ENTRY_BLOCK_PTR_FOR_FN (cfun)))
	{
	  tree vexpr = make_node (DEBUG_EXPR_DECL);
	  gimple *def_temp;
	  gimple_stmt_iterator gsi;
	  tree val = SSA_NAME_VAR (name);

	  n = id->decl_map->get (val);
	  if (n != NULL)
	    val = *n;
	  if (TREE_CODE (val) != PARM_DECL
	      && !(VAR_P (val) && DECL_ABSTRACT_ORIGIN (val)))
	    {
	      processing_debug_stmt = -1;
	      return name;
	    }
	  n = id->decl_map->get (val);
	  if (n && TREE_CODE (*n) == DEBUG_EXPR_DECL)
	    return *n;
	  def_temp = gimple_build_debug_source_bind (vexpr, val, NULL);
	  DECL_ARTIFICIAL (vexpr) = 1;
	  TREE_TYPE (vexpr) = TREE_TYPE (name);
	  SET_DECL_MODE (vexpr, DECL_MODE (SSA_NAME_VAR (name)));
	  gsi = gsi_after_labels (single_succ (ENTRY_BLOCK_PTR_FOR_FN (cfun)));
	  gsi_insert_before (&gsi, def_temp, GSI_SAME_STMT);
	  insert_decl_map (id, val, vexpr);
	  return vexpr;
	}

      processing_debug_stmt = -1;
      return name;
    }

  /* Remap anonymous SSA names or SSA names of anonymous decls.  */
  var = SSA_NAME_VAR (name);
  if (!var
      || (!SSA_NAME_IS_DEFAULT_DEF (name)
	  && VAR_P (var)
	  && !VAR_DECL_IS_VIRTUAL_OPERAND (var)
	  && DECL_ARTIFICIAL (var)
	  && DECL_IGNORED_P (var)
	  && !DECL_NAME (var)))
    {
      struct ptr_info_def *pi;
      new_tree = make_ssa_name (remap_type (TREE_TYPE (name), id));
      if (!var && SSA_NAME_IDENTIFIER (name))
	SET_SSA_NAME_VAR_OR_IDENTIFIER (new_tree, SSA_NAME_IDENTIFIER (name));
      insert_decl_map (id, name, new_tree);
      SSA_NAME_OCCURS_IN_ABNORMAL_PHI (new_tree)
	= SSA_NAME_OCCURS_IN_ABNORMAL_PHI (name);
      /* At least IPA points-to info can be directly transferred.  */
      if (id->src_cfun->gimple_df
	  && id->src_cfun->gimple_df->ipa_pta
	  && POINTER_TYPE_P (TREE_TYPE (name))
	  && (pi = SSA_NAME_PTR_INFO (name))
	  && !pi->pt.anything)
	{
	  struct ptr_info_def *new_pi = get_ptr_info (new_tree);
	  new_pi->pt = pi->pt;
	}
      /* So can range-info.  */
      if (!POINTER_TYPE_P (TREE_TYPE (name))
	  && SSA_NAME_RANGE_INFO (name))
	duplicate_ssa_name_range_info (new_tree, SSA_NAME_RANGE_TYPE (name),
				       SSA_NAME_RANGE_INFO (name));
      return new_tree;
    }

  /* Do not set DEF_STMT yet as statement is not copied yet. We do that
     in copy_bb.  */
  new_tree = remap_decl (var, id);

  /* We might've substituted constant or another SSA_NAME for
     the variable.

     Replace the SSA name representing RESULT_DECL by variable during
     inlining:  this saves us from need to introduce PHI node in a case
     return value is just partly initialized.  */
  if ((VAR_P (new_tree) || TREE_CODE (new_tree) == PARM_DECL)
      && (!SSA_NAME_VAR (name)
	  || TREE_CODE (SSA_NAME_VAR (name)) != RESULT_DECL
	  || !id->transform_return_to_modify))
    {
      struct ptr_info_def *pi;
      new_tree = make_ssa_name (new_tree);
      insert_decl_map (id, name, new_tree);
      SSA_NAME_OCCURS_IN_ABNORMAL_PHI (new_tree)
	= SSA_NAME_OCCURS_IN_ABNORMAL_PHI (name);
      /* At least IPA points-to info can be directly transferred.  */
      if (id->src_cfun->gimple_df
	  && id->src_cfun->gimple_df->ipa_pta
	  && POINTER_TYPE_P (TREE_TYPE (name))
	  && (pi = SSA_NAME_PTR_INFO (name))
	  && !pi->pt.anything)
	{
	  struct ptr_info_def *new_pi = get_ptr_info (new_tree);
	  new_pi->pt = pi->pt;
	}
      /* So can range-info.  */
      if (!POINTER_TYPE_P (TREE_TYPE (name))
	  && SSA_NAME_RANGE_INFO (name))
	duplicate_ssa_name_range_info (new_tree, SSA_NAME_RANGE_TYPE (name),
				       SSA_NAME_RANGE_INFO (name));
      if (SSA_NAME_IS_DEFAULT_DEF (name))
	{
	  /* By inlining function having uninitialized variable, we might
	     extend the lifetime (variable might get reused).  This cause
	     ICE in the case we end up extending lifetime of SSA name across
	     abnormal edge, but also increase register pressure.

	     We simply initialize all uninitialized vars by 0 except
	     for case we are inlining to very first BB.  We can avoid
	     this for all BBs that are not inside strongly connected
	     regions of the CFG, but this is expensive to test.  */
	  if (id->entry_bb
	      && SSA_NAME_OCCURS_IN_ABNORMAL_PHI (name)
	      && (!SSA_NAME_VAR (name)
		  || TREE_CODE (SSA_NAME_VAR (name)) != PARM_DECL)
	      && (id->entry_bb != EDGE_SUCC (ENTRY_BLOCK_PTR_FOR_FN (cfun),
					     0)->dest
		  || EDGE_COUNT (id->entry_bb->preds) != 1))
	    {
	      gimple_stmt_iterator gsi = gsi_last_bb (id->entry_bb);
	      gimple *init_stmt;
	      tree zero = build_zero_cst (TREE_TYPE (new_tree));

	      init_stmt = gimple_build_assign (new_tree, zero);
	      gsi_insert_after (&gsi, init_stmt, GSI_NEW_STMT);
	      SSA_NAME_IS_DEFAULT_DEF (new_tree) = 0;
	    }
	  else
	    {
	      SSA_NAME_DEF_STMT (new_tree) = gimple_build_nop ();
	      set_ssa_default_def (cfun, SSA_NAME_VAR (new_tree), new_tree);
	    }
	}
    }
  else
    insert_decl_map (id, name, new_tree);
  return new_tree;
}

/* Remap DECL during the copying of the BLOCK tree for the function.  */

tree
remap_decl (tree decl, copy_body_data *id)
{
  tree *n;

  /* We only remap local variables in the current function.  */

  /* See if we have remapped this declaration.  */

  n = id->decl_map->get (decl);

  if (!n && processing_debug_stmt)
    {
      processing_debug_stmt = -1;
      return decl;
    }

  /* When remapping a type within copy_gimple_seq_and_replace_locals, all
     necessary DECLs have already been remapped and we do not want to duplicate
     a decl coming from outside of the sequence we are copying.  */
  if (!n
      && id->prevent_decl_creation_for_types
      && id->remapping_type_depth > 0
      && (VAR_P (decl) || TREE_CODE (decl) == PARM_DECL))
    return decl;

  /* If we didn't already have an equivalent for this declaration, create one
     now.  */
  if (!n)
    {
      /* Make a copy of the variable or label.  */
      tree t = id->copy_decl (decl, id);

      /* Remember it, so that if we encounter this local entity again
	 we can reuse this copy.  Do this early because remap_type may
	 need this decl for TYPE_STUB_DECL.  */
      insert_decl_map (id, decl, t);

      if (!DECL_P (t))
	return t;

      /* Remap types, if necessary.  */
      TREE_TYPE (t) = remap_type (TREE_TYPE (t), id);
      if (TREE_CODE (t) == TYPE_DECL)
	{
	  DECL_ORIGINAL_TYPE (t) = remap_type (DECL_ORIGINAL_TYPE (t), id);

	  /* Preserve the invariant that DECL_ORIGINAL_TYPE != TREE_TYPE,
	     which is enforced in gen_typedef_die when DECL_ABSTRACT_ORIGIN
	     is not set on the TYPE_DECL, for example in LTO mode.  */
	  if (DECL_ORIGINAL_TYPE (t) == TREE_TYPE (t))
	    {
	      tree x = build_variant_type_copy (TREE_TYPE (t));
	      TYPE_STUB_DECL (x) = TYPE_STUB_DECL (TREE_TYPE (t));
	      TYPE_NAME (x) = TYPE_NAME (TREE_TYPE (t));
	      DECL_ORIGINAL_TYPE (t) = x;
	    }
	}

      /* Remap sizes as necessary.  */
      walk_tree (&DECL_SIZE (t), copy_tree_body_r, id, NULL);
      walk_tree (&DECL_SIZE_UNIT (t), copy_tree_body_r, id, NULL);

      /* If fields, do likewise for offset and qualifier.  */
      if (TREE_CODE (t) == FIELD_DECL)
	{
	  walk_tree (&DECL_FIELD_OFFSET (t), copy_tree_body_r, id, NULL);
	  if (TREE_CODE (DECL_CONTEXT (t)) == QUAL_UNION_TYPE)
	    walk_tree (&DECL_QUALIFIER (t), copy_tree_body_r, id, NULL);
	}

      return t;
    }

  if (id->do_not_unshare)
    return *n;
  else
    return unshare_expr (*n);
}

static tree
remap_type_1 (tree type, copy_body_data *id)
{
  tree new_tree, t;

  /* We do need a copy.  build and register it now.  If this is a pointer or
     reference type, remap the designated type and make a new pointer or
     reference type.  */
  if (TREE_CODE (type) == POINTER_TYPE)
    {
      new_tree = build_pointer_type_for_mode (remap_type (TREE_TYPE (type), id),
					 TYPE_MODE (type),
					 TYPE_REF_CAN_ALIAS_ALL (type));
      if (TYPE_ATTRIBUTES (type) || TYPE_QUALS (type))
	new_tree = build_type_attribute_qual_variant (new_tree,
						      TYPE_ATTRIBUTES (type),
						      TYPE_QUALS (type));
      insert_decl_map (id, type, new_tree);
      return new_tree;
    }
  else if (TREE_CODE (type) == REFERENCE_TYPE)
    {
      new_tree = build_reference_type_for_mode (remap_type (TREE_TYPE (type), id),
					    TYPE_MODE (type),
					    TYPE_REF_CAN_ALIAS_ALL (type));
      if (TYPE_ATTRIBUTES (type) || TYPE_QUALS (type))
	new_tree = build_type_attribute_qual_variant (new_tree,
						      TYPE_ATTRIBUTES (type),
						      TYPE_QUALS (type));
      insert_decl_map (id, type, new_tree);
      return new_tree;
    }
  else
    new_tree = copy_node (type);

  insert_decl_map (id, type, new_tree);

  /* This is a new type, not a copy of an old type.  Need to reassociate
     variants.  We can handle everything except the main variant lazily.  */
  t = TYPE_MAIN_VARIANT (type);
  if (type != t)
    {
      t = remap_type (t, id);
      TYPE_MAIN_VARIANT (new_tree) = t;
      TYPE_NEXT_VARIANT (new_tree) = TYPE_NEXT_VARIANT (t);
      TYPE_NEXT_VARIANT (t) = new_tree;
    }
  else
    {
      TYPE_MAIN_VARIANT (new_tree) = new_tree;
      TYPE_NEXT_VARIANT (new_tree) = NULL;
    }

  if (TYPE_STUB_DECL (type))
    TYPE_STUB_DECL (new_tree) = remap_decl (TYPE_STUB_DECL (type), id);

  /* Lazily create pointer and reference types.  */
  TYPE_POINTER_TO (new_tree) = NULL;
  TYPE_REFERENCE_TO (new_tree) = NULL;

  /* Copy all types that may contain references to local variables; be sure to
     preserve sharing in between type and its main variant when possible.  */
  switch (TREE_CODE (new_tree))
    {
    case INTEGER_TYPE:
    case REAL_TYPE:
    case FIXED_POINT_TYPE:
    case ENUMERAL_TYPE:
    case BOOLEAN_TYPE:
      if (TYPE_MAIN_VARIANT (new_tree) != new_tree)
	{
	  gcc_checking_assert (TYPE_MIN_VALUE (type) == TYPE_MIN_VALUE (TYPE_MAIN_VARIANT (type)));
	  gcc_checking_assert (TYPE_MAX_VALUE (type) == TYPE_MAX_VALUE (TYPE_MAIN_VARIANT (type)));

	  TYPE_MIN_VALUE (new_tree) = TYPE_MIN_VALUE (TYPE_MAIN_VARIANT (new_tree));
	  TYPE_MAX_VALUE (new_tree) = TYPE_MAX_VALUE (TYPE_MAIN_VARIANT (new_tree));
	}
      else
	{
	  t = TYPE_MIN_VALUE (new_tree);
	  if (t && TREE_CODE (t) != INTEGER_CST)
	    walk_tree (&TYPE_MIN_VALUE (new_tree), copy_tree_body_r, id, NULL);

	  t = TYPE_MAX_VALUE (new_tree);
	  if (t && TREE_CODE (t) != INTEGER_CST)
	    walk_tree (&TYPE_MAX_VALUE (new_tree), copy_tree_body_r, id, NULL);
	}
      return new_tree;

    case FUNCTION_TYPE:
      if (TYPE_MAIN_VARIANT (new_tree) != new_tree
	  && TREE_TYPE (type) == TREE_TYPE (TYPE_MAIN_VARIANT (type)))
	TREE_TYPE (new_tree) = TREE_TYPE (TYPE_MAIN_VARIANT (new_tree));
      else
        TREE_TYPE (new_tree) = remap_type (TREE_TYPE (new_tree), id);
      if (TYPE_MAIN_VARIANT (new_tree) != new_tree
	  && TYPE_ARG_TYPES (type) == TYPE_ARG_TYPES (TYPE_MAIN_VARIANT (type)))
	TYPE_ARG_TYPES (new_tree) = TYPE_ARG_TYPES (TYPE_MAIN_VARIANT (new_tree));
      else
        walk_tree (&TYPE_ARG_TYPES (new_tree), copy_tree_body_r, id, NULL);
      return new_tree;

    case ARRAY_TYPE:
      if (TYPE_MAIN_VARIANT (new_tree) != new_tree
	  && TREE_TYPE (type) == TREE_TYPE (TYPE_MAIN_VARIANT (type)))
	TREE_TYPE (new_tree) = TREE_TYPE (TYPE_MAIN_VARIANT (new_tree));
      else
	TREE_TYPE (new_tree) = remap_type (TREE_TYPE (new_tree), id);

      if (TYPE_MAIN_VARIANT (new_tree) != new_tree)
	{
	  gcc_checking_assert (TYPE_DOMAIN (type)
			       == TYPE_DOMAIN (TYPE_MAIN_VARIANT (type)));
	  TYPE_DOMAIN (new_tree) = TYPE_DOMAIN (TYPE_MAIN_VARIANT (new_tree));
	}
      else
        {
	  TYPE_DOMAIN (new_tree) = remap_type (TYPE_DOMAIN (new_tree), id);
	  /* For array bounds where we have decided not to copy over the bounds
	     variable which isn't used in OpenMP/OpenACC region, change them to
	     an uninitialized VAR_DECL temporary.  */
	  if (id->adjust_array_error_bounds
	      && TYPE_DOMAIN (new_tree)
	      && TYPE_MAX_VALUE (TYPE_DOMAIN (new_tree)) == error_mark_node
	      && TYPE_MAX_VALUE (TYPE_DOMAIN (type)) != error_mark_node)
	    {
	      tree v = create_tmp_var (TREE_TYPE (TYPE_DOMAIN (new_tree)));
	      DECL_ATTRIBUTES (v)
		= tree_cons (get_identifier ("omp dummy var"), NULL_TREE,
			     DECL_ATTRIBUTES (v));
	      TYPE_MAX_VALUE (TYPE_DOMAIN (new_tree)) = v;
	    }
        }
      break;

    case RECORD_TYPE:
    case UNION_TYPE:
    case QUAL_UNION_TYPE:
      if (TYPE_MAIN_VARIANT (type) != type
	  && TYPE_FIELDS (type) == TYPE_FIELDS (TYPE_MAIN_VARIANT (type)))
	TYPE_FIELDS (new_tree) = TYPE_FIELDS (TYPE_MAIN_VARIANT (new_tree));
      else
	{
	  tree f, nf = NULL;

	  for (f = TYPE_FIELDS (new_tree); f ; f = DECL_CHAIN (f))
	    {
	      t = remap_decl (f, id);
	      DECL_CONTEXT (t) = new_tree;
	      DECL_CHAIN (t) = nf;
	      nf = t;
	    }
	  TYPE_FIELDS (new_tree) = nreverse (nf);
	}
      break;

    case OFFSET_TYPE:
    default:
      /* Shouldn't have been thought variable sized.  */
      gcc_unreachable ();
    }

  /* All variants of type share the same size, so use the already remaped data.  */
  if (TYPE_MAIN_VARIANT (new_tree) != new_tree)
    {
      tree s = TYPE_SIZE (type);
      tree mvs = TYPE_SIZE (TYPE_MAIN_VARIANT (type));
      tree su = TYPE_SIZE_UNIT (type);
      tree mvsu = TYPE_SIZE_UNIT (TYPE_MAIN_VARIANT (type));
      gcc_checking_assert ((TREE_CODE (s) == PLACEHOLDER_EXPR
			    && (TREE_CODE (mvs) == PLACEHOLDER_EXPR))
			   || s == mvs);
      gcc_checking_assert ((TREE_CODE (su) == PLACEHOLDER_EXPR
			    && (TREE_CODE (mvsu) == PLACEHOLDER_EXPR))
			   || su == mvsu);
      TYPE_SIZE (new_tree) = TYPE_SIZE (TYPE_MAIN_VARIANT (new_tree));
      TYPE_SIZE_UNIT (new_tree) = TYPE_SIZE_UNIT (TYPE_MAIN_VARIANT (new_tree));
    }
  else
    {
      walk_tree (&TYPE_SIZE (new_tree), copy_tree_body_r, id, NULL);
      walk_tree (&TYPE_SIZE_UNIT (new_tree), copy_tree_body_r, id, NULL);
    }

  return new_tree;
}

/* Helper function for remap_type_2, called through walk_tree.  */

static tree
remap_type_3 (tree *tp, int *walk_subtrees, void *data)
{
  copy_body_data *id = (copy_body_data *) data;

  if (TYPE_P (*tp))
    *walk_subtrees = 0;

  else if (DECL_P (*tp) && remap_decl (*tp, id) != *tp)
    return *tp;

  return NULL_TREE;
}

/* Return true if TYPE needs to be remapped because remap_decl on any
   needed embedded decl returns something other than that decl.  */

static bool
remap_type_2 (tree type, copy_body_data *id)
{
  tree t;

#define RETURN_TRUE_IF_VAR(T) \
  do								\
    {								\
      tree _t = (T);						\
      if (_t)							\
	{							\
	  if (DECL_P (_t) && remap_decl (_t, id) != _t)		\
	    return true;					\
	  if (!TYPE_SIZES_GIMPLIFIED (type)			\
	      && walk_tree (&_t, remap_type_3, id, NULL))	\
	    return true;					\
	}							\
    }								\
  while (0)

  switch (TREE_CODE (type))
    {
    case POINTER_TYPE:
    case REFERENCE_TYPE:
    case FUNCTION_TYPE:
    case METHOD_TYPE:
      return remap_type_2 (TREE_TYPE (type), id);

    case INTEGER_TYPE:
    case REAL_TYPE:
    case FIXED_POINT_TYPE:
    case ENUMERAL_TYPE:
    case BOOLEAN_TYPE:
      RETURN_TRUE_IF_VAR (TYPE_MIN_VALUE (type));
      RETURN_TRUE_IF_VAR (TYPE_MAX_VALUE (type));
      return false;

    case ARRAY_TYPE:
      if (remap_type_2 (TREE_TYPE (type), id)
	  || (TYPE_DOMAIN (type) && remap_type_2 (TYPE_DOMAIN (type), id)))
	return true;
      break;

    case RECORD_TYPE:
    case UNION_TYPE:
    case QUAL_UNION_TYPE:
      for (t = TYPE_FIELDS (type); t; t = DECL_CHAIN (t))
	if (TREE_CODE (t) == FIELD_DECL)
	  {
	    RETURN_TRUE_IF_VAR (DECL_FIELD_OFFSET (t));
	    RETURN_TRUE_IF_VAR (DECL_SIZE (t));
	    RETURN_TRUE_IF_VAR (DECL_SIZE_UNIT (t));
	    if (TREE_CODE (type) == QUAL_UNION_TYPE)
	      RETURN_TRUE_IF_VAR (DECL_QUALIFIER (t));
	  }
      break;

    default:
      return false;
    }

  RETURN_TRUE_IF_VAR (TYPE_SIZE (type));
  RETURN_TRUE_IF_VAR (TYPE_SIZE_UNIT (type));
  return false;
#undef RETURN_TRUE_IF_VAR
}

tree
remap_type (tree type, copy_body_data *id)
{
  tree *node;
  tree tmp;

  if (type == NULL)
    return type;

  /* See if we have remapped this type.  */
  node = id->decl_map->get (type);
  if (node)
    return *node;

  /* The type only needs remapping if it's variably modified.  */
  if (! variably_modified_type_p (type, id->src_fn)
      /* Don't remap if copy_decl method doesn't always return a new
	 decl and for all embedded decls returns the passed in decl.  */
      || (id->dont_remap_vla_if_no_change && !remap_type_2 (type, id)))
    {
      insert_decl_map (id, type, type);
      return type;
    }

  id->remapping_type_depth++;
  tmp = remap_type_1 (type, id);
  id->remapping_type_depth--;

  return tmp;
}

/* Decide if DECL can be put into BLOCK_NONLOCAL_VARs.  */

static bool
can_be_nonlocal (tree decl, copy_body_data *id)
{
  /* We cannot duplicate function decls.  */
  if (TREE_CODE (decl) == FUNCTION_DECL)
    return true;

  /* Local static vars must be non-local or we get multiple declaration
     problems.  */
  if (VAR_P (decl) && !auto_var_in_fn_p (decl, id->src_fn))
    return true;

  return false;
}

static tree
remap_decls (tree decls, vec<tree, va_gc> **nonlocalized_list,
	     copy_body_data *id)
{
  tree old_var;
  tree new_decls = NULL_TREE;

  /* Remap its variables.  */
  for (old_var = decls; old_var; old_var = DECL_CHAIN (old_var))
    {
      tree new_var;

      if (can_be_nonlocal (old_var, id))
	{
	  /* We need to add this variable to the local decls as otherwise
	     nothing else will do so.  */
	  if (VAR_P (old_var) && ! DECL_EXTERNAL (old_var) && cfun)
	    add_local_decl (cfun, old_var);
	  if ((!optimize || debug_info_level > DINFO_LEVEL_TERSE)
	      && !DECL_IGNORED_P (old_var)
	      && nonlocalized_list)
	    vec_safe_push (*nonlocalized_list, old_var);
	  continue;
	}

      /* Remap the variable.  */
      new_var = remap_decl (old_var, id);

      /* If we didn't remap this variable, we can't mess with its
	 TREE_CHAIN.  If we remapped this variable to the return slot, it's
	 already declared somewhere else, so don't declare it here.  */

      if (new_var == id->retvar)
	;
      else if (!new_var)
        {
	  if ((!optimize || debug_info_level > DINFO_LEVEL_TERSE)
	      && !DECL_IGNORED_P (old_var)
	      && nonlocalized_list)
	    vec_safe_push (*nonlocalized_list, old_var);
	}
      else
	{
	  gcc_assert (DECL_P (new_var));
	  DECL_CHAIN (new_var) = new_decls;
	  new_decls = new_var;
 
	  /* Also copy value-expressions.  */
	  if (VAR_P (new_var) && DECL_HAS_VALUE_EXPR_P (new_var))
	    {
	      tree tem = DECL_VALUE_EXPR (new_var);
	      bool old_regimplify = id->regimplify;
	      id->remapping_type_depth++;
	      walk_tree (&tem, copy_tree_body_r, id, NULL);
	      id->remapping_type_depth--;
	      id->regimplify = old_regimplify;
	      SET_DECL_VALUE_EXPR (new_var, tem);
	    }
	}
    }

  return nreverse (new_decls);
}

/* Copy the BLOCK to contain remapped versions of the variables
   therein.  And hook the new block into the block-tree.  */

static void
remap_block (tree *block, copy_body_data *id)
{
  tree old_block;
  tree new_block;

  /* Make the new block.  */
  old_block = *block;
  new_block = make_node (BLOCK);
  TREE_USED (new_block) = TREE_USED (old_block);
  BLOCK_ABSTRACT_ORIGIN (new_block) = BLOCK_ORIGIN (old_block);
  BLOCK_SOURCE_LOCATION (new_block) = BLOCK_SOURCE_LOCATION (old_block);
  BLOCK_NONLOCALIZED_VARS (new_block)
    = vec_safe_copy (BLOCK_NONLOCALIZED_VARS (old_block));
  *block = new_block;

  /* Remap its variables.  */
  BLOCK_VARS (new_block) = remap_decls (BLOCK_VARS (old_block),
  					&BLOCK_NONLOCALIZED_VARS (new_block),
					id);

  if (id->transform_lang_insert_block)
    id->transform_lang_insert_block (new_block);

  /* Remember the remapped block.  */
  insert_decl_map (id, old_block, new_block);
}

/* Copy the whole block tree and root it in id->block.  */

static tree
remap_blocks (tree block, copy_body_data *id)
{
  tree t;
  tree new_tree = block;

  if (!block)
    return NULL;

  remap_block (&new_tree, id);
  gcc_assert (new_tree != block);
  for (t = BLOCK_SUBBLOCKS (block); t ; t = BLOCK_CHAIN (t))
    prepend_lexical_block (new_tree, remap_blocks (t, id));
  /* Blocks are in arbitrary order, but make things slightly prettier and do
     not swap order when producing a copy.  */
  BLOCK_SUBBLOCKS (new_tree) = blocks_nreverse (BLOCK_SUBBLOCKS (new_tree));
  return new_tree;
}

/* Remap the block tree rooted at BLOCK to nothing.  */

static void
remap_blocks_to_null (tree block, copy_body_data *id)
{
  tree t;
  insert_decl_map (id, block, NULL_TREE);
  for (t = BLOCK_SUBBLOCKS (block); t ; t = BLOCK_CHAIN (t))
    remap_blocks_to_null (t, id);
}

/* Remap the location info pointed to by LOCUS.  */

static location_t
remap_location (location_t locus, copy_body_data *id)
{
  if (LOCATION_BLOCK (locus))
    {
      tree *n = id->decl_map->get (LOCATION_BLOCK (locus));
      gcc_assert (n);
      if (*n)
	return set_block (locus, *n);
    }

  locus = LOCATION_LOCUS (locus);

  if (locus != UNKNOWN_LOCATION && id->block)
    return set_block (locus, id->block);

  return locus;
}

static void
copy_statement_list (tree *tp)
{
  tree_stmt_iterator oi, ni;
  tree new_tree;

  new_tree = alloc_stmt_list ();
  ni = tsi_start (new_tree);
  oi = tsi_start (*tp);
  TREE_TYPE (new_tree) = TREE_TYPE (*tp);
  *tp = new_tree;

  for (; !tsi_end_p (oi); tsi_next (&oi))
    {
      tree stmt = tsi_stmt (oi);
      if (TREE_CODE (stmt) == STATEMENT_LIST)
	/* This copy is not redundant; tsi_link_after will smash this
	   STATEMENT_LIST into the end of the one we're building, and we
	   don't want to do that with the original.  */
	copy_statement_list (&stmt);
      tsi_link_after (&ni, stmt, TSI_CONTINUE_LINKING);
    }
}

static void
copy_bind_expr (tree *tp, int *walk_subtrees, copy_body_data *id)
{
  tree block = BIND_EXPR_BLOCK (*tp);
  /* Copy (and replace) the statement.  */
  copy_tree_r (tp, walk_subtrees, NULL);
  if (block)
    {
      remap_block (&block, id);
      BIND_EXPR_BLOCK (*tp) = block;
    }

  if (BIND_EXPR_VARS (*tp))
    /* This will remap a lot of the same decls again, but this should be
       harmless.  */
    BIND_EXPR_VARS (*tp) = remap_decls (BIND_EXPR_VARS (*tp), NULL, id);
}


/* Create a new gimple_seq by remapping all the statements in BODY
   using the inlining information in ID.  */

static gimple_seq
remap_gimple_seq (gimple_seq body, copy_body_data *id)
{
  gimple_stmt_iterator si;
  gimple_seq new_body = NULL;

  for (si = gsi_start (body); !gsi_end_p (si); gsi_next (&si))
    {
      gimple_seq new_stmts = remap_gimple_stmt (gsi_stmt (si), id);
      gimple_seq_add_seq (&new_body, new_stmts);
    }

  return new_body;
}


/* Copy a GIMPLE_BIND statement STMT, remapping all the symbols in its
   block using the mapping information in ID.  */

static gimple *
copy_gimple_bind (gbind *stmt, copy_body_data *id)
{
  gimple *new_bind;
  tree new_block, new_vars;
  gimple_seq body, new_body;

  /* Copy the statement.  Note that we purposely don't use copy_stmt
     here because we need to remap statements as we copy.  */
  body = gimple_bind_body (stmt);
  new_body = remap_gimple_seq (body, id);

  new_block = gimple_bind_block (stmt);
  if (new_block)
    remap_block (&new_block, id);

  /* This will remap a lot of the same decls again, but this should be
     harmless.  */
  new_vars = gimple_bind_vars (stmt);
  if (new_vars)
    new_vars = remap_decls (new_vars, NULL, id);

  new_bind = gimple_build_bind (new_vars, new_body, new_block);

  return new_bind;
}

/* Return true if DECL is a parameter or a SSA_NAME for a parameter.  */

static bool
is_parm (tree decl)
{
  if (TREE_CODE (decl) == SSA_NAME)
    {
      decl = SSA_NAME_VAR (decl);
      if (!decl)
	return false;
    }

  return (TREE_CODE (decl) == PARM_DECL);
}

/* Remap the dependence CLIQUE from the source to the destination function
   as specified in ID.  */

static unsigned short
remap_dependence_clique (copy_body_data *id, unsigned short clique)
{
  if (clique == 0 || processing_debug_stmt)
    return 0;
  if (!id->dependence_map)
    id->dependence_map = new hash_map<dependence_hash, unsigned short>;
  bool existed;
  unsigned short &newc = id->dependence_map->get_or_insert (clique, &existed);
  if (!existed)
    {
      /* Clique 1 is reserved for local ones set by PTA.  */
      if (cfun->last_clique == 0)
	cfun->last_clique = 1;
      newc = ++cfun->last_clique;
    }
  return newc;
}

/* Remap the GIMPLE operand pointed to by *TP.  DATA is really a
   'struct walk_stmt_info *'.  DATA->INFO is a 'copy_body_data *'.
   WALK_SUBTREES is used to indicate walk_gimple_op whether to keep
   recursing into the children nodes of *TP.  */

static tree
remap_gimple_op_r (tree *tp, int *walk_subtrees, void *data)
{
  struct walk_stmt_info *wi_p = (struct walk_stmt_info *) data;
  copy_body_data *id = (copy_body_data *) wi_p->info;
  tree fn = id->src_fn;

  /* For recursive invocations this is no longer the LHS itself.  */
  bool is_lhs = wi_p->is_lhs;
  wi_p->is_lhs = false;

  if (TREE_CODE (*tp) == SSA_NAME)
    {
      *tp = remap_ssa_name (*tp, id);
      *walk_subtrees = 0;
      if (is_lhs)
	SSA_NAME_DEF_STMT (*tp) = wi_p->stmt;
      return NULL;
    }
  else if (auto_var_in_fn_p (*tp, fn))
    {
      /* Local variables and labels need to be replaced by equivalent
	 variables.  We don't want to copy static variables; there's
	 only one of those, no matter how many times we inline the
	 containing function.  Similarly for globals from an outer
	 function.  */
      tree new_decl;

      /* Remap the declaration.  */
      new_decl = remap_decl (*tp, id);
      gcc_assert (new_decl);
      /* Replace this variable with the copy.  */
      STRIP_TYPE_NOPS (new_decl);
      /* ???  The C++ frontend uses void * pointer zero to initialize
         any other type.  This confuses the middle-end type verification.
	 As cloned bodies do not go through gimplification again the fixup
	 there doesn't trigger.  */
      if (TREE_CODE (new_decl) == INTEGER_CST
	  && !useless_type_conversion_p (TREE_TYPE (*tp), TREE_TYPE (new_decl)))
	new_decl = fold_convert (TREE_TYPE (*tp), new_decl);
      *tp = new_decl;
      *walk_subtrees = 0;
    }
  else if (TREE_CODE (*tp) == STATEMENT_LIST)
    gcc_unreachable ();
  else if (TREE_CODE (*tp) == SAVE_EXPR)
    gcc_unreachable ();
  else if (TREE_CODE (*tp) == LABEL_DECL
	   && (!DECL_CONTEXT (*tp)
	       || decl_function_context (*tp) == id->src_fn))
    /* These may need to be remapped for EH handling.  */
    *tp = remap_decl (*tp, id);
  else if (TREE_CODE (*tp) == FIELD_DECL)
    {
      /* If the enclosing record type is variably_modified_type_p, the field
	 has already been remapped.  Otherwise, it need not be.  */
      tree *n = id->decl_map->get (*tp);
      if (n)
	*tp = *n;
      *walk_subtrees = 0;
    }
  else if (TYPE_P (*tp))
    /* Types may need remapping as well.  */
    *tp = remap_type (*tp, id);
  else if (CONSTANT_CLASS_P (*tp))
    {
      /* If this is a constant, we have to copy the node iff the type
	 will be remapped.  copy_tree_r will not copy a constant.  */
      tree new_type = remap_type (TREE_TYPE (*tp), id);

      if (new_type == TREE_TYPE (*tp))
	*walk_subtrees = 0;

      else if (TREE_CODE (*tp) == INTEGER_CST)
	*tp = wide_int_to_tree (new_type, wi::to_wide (*tp));
      else
	{
	  *tp = copy_node (*tp);
	  TREE_TYPE (*tp) = new_type;
	}
    }
  else
    {
      /* Otherwise, just copy the node.  Note that copy_tree_r already
	 knows not to copy VAR_DECLs, etc., so this is safe.  */

      if (TREE_CODE (*tp) == MEM_REF && !id->do_not_fold)
	{
	  /* We need to re-canonicalize MEM_REFs from inline substitutions
	     that can happen when a pointer argument is an ADDR_EXPR.
	     Recurse here manually to allow that.  */
	  tree ptr = TREE_OPERAND (*tp, 0);
	  tree type = remap_type (TREE_TYPE (*tp), id);
	  tree old = *tp;
	  walk_tree (&ptr, remap_gimple_op_r, data, NULL);
	  *tp = fold_build2 (MEM_REF, type, ptr, TREE_OPERAND (*tp, 1));
	  TREE_THIS_VOLATILE (*tp) = TREE_THIS_VOLATILE (old);
	  TREE_SIDE_EFFECTS (*tp) = TREE_SIDE_EFFECTS (old);
	  TREE_NO_WARNING (*tp) = TREE_NO_WARNING (old);
	  if (MR_DEPENDENCE_CLIQUE (old) != 0)
	    {
	      MR_DEPENDENCE_CLIQUE (*tp)
	        = remap_dependence_clique (id, MR_DEPENDENCE_CLIQUE (old));
	      MR_DEPENDENCE_BASE (*tp) = MR_DEPENDENCE_BASE (old);
	    }
	  /* We cannot propagate the TREE_THIS_NOTRAP flag if we have
	     remapped a parameter as the property might be valid only
	     for the parameter itself.  */
	  if (TREE_THIS_NOTRAP (old)
	      && (!is_parm (TREE_OPERAND (old, 0))
		  || (!id->transform_parameter && is_parm (ptr))))
	    TREE_THIS_NOTRAP (*tp) = 1;
	  REF_REVERSE_STORAGE_ORDER (*tp) = REF_REVERSE_STORAGE_ORDER (old);
	  *walk_subtrees = 0;
	  return NULL;
	}

      /* Here is the "usual case".  Copy this tree node, and then
	 tweak some special cases.  */
      copy_tree_r (tp, walk_subtrees, NULL);

      if (TREE_CODE (*tp) != OMP_CLAUSE)
	TREE_TYPE (*tp) = remap_type (TREE_TYPE (*tp), id);

      if (TREE_CODE (*tp) == TARGET_EXPR && TREE_OPERAND (*tp, 3))
	{
	  /* The copied TARGET_EXPR has never been expanded, even if the
	     original node was expanded already.  */
	  TREE_OPERAND (*tp, 1) = TREE_OPERAND (*tp, 3);
	  TREE_OPERAND (*tp, 3) = NULL_TREE;
	}
      else if (TREE_CODE (*tp) == ADDR_EXPR)
	{
	  /* Variable substitution need not be simple.  In particular,
	     the MEM_REF substitution above.  Make sure that
	     TREE_CONSTANT and friends are up-to-date.  */
	  int invariant = is_gimple_min_invariant (*tp);
	  walk_tree (&TREE_OPERAND (*tp, 0), remap_gimple_op_r, data, NULL);
	  recompute_tree_invariant_for_addr_expr (*tp);

	  /* If this used to be invariant, but is not any longer,
	     then regimplification is probably needed.  */
	  if (invariant && !is_gimple_min_invariant (*tp))
	    id->regimplify = true;

	  *walk_subtrees = 0;
	}
    }

  /* Update the TREE_BLOCK for the cloned expr.  */
  if (EXPR_P (*tp))
    {
      tree new_block = id->remapping_type_depth == 0 ? id->block : NULL;
      tree old_block = TREE_BLOCK (*tp);
      if (old_block)
	{
	  tree *n;
	  n = id->decl_map->get (TREE_BLOCK (*tp));
	  if (n)
	    new_block = *n;
	}
      TREE_SET_BLOCK (*tp, new_block);
    }

  /* Keep iterating.  */
  return NULL_TREE;
}


/* Called from copy_body_id via walk_tree.  DATA is really a
   `copy_body_data *'.  */

tree
copy_tree_body_r (tree *tp, int *walk_subtrees, void *data)
{
  copy_body_data *id = (copy_body_data *) data;
  tree fn = id->src_fn;
  tree new_block;

  /* Begin by recognizing trees that we'll completely rewrite for the
     inlining context.  Our output for these trees is completely
     different from out input (e.g. RETURN_EXPR is deleted, and morphs
     into an edge).  Further down, we'll handle trees that get
     duplicated and/or tweaked.  */

  /* When requested, RETURN_EXPRs should be transformed to just the
     contained MODIFY_EXPR.  The branch semantics of the return will
     be handled elsewhere by manipulating the CFG rather than a statement.  */
  if (TREE_CODE (*tp) == RETURN_EXPR && id->transform_return_to_modify)
    {
      tree assignment = TREE_OPERAND (*tp, 0);

      /* If we're returning something, just turn that into an
	 assignment into the equivalent of the original RESULT_DECL.
	 If the "assignment" is just the result decl, the result
	 decl has already been set (e.g. a recent "foo (&result_decl,
	 ...)"); just toss the entire RETURN_EXPR.  */
      if (assignment && TREE_CODE (assignment) == MODIFY_EXPR)
	{
	  /* Replace the RETURN_EXPR with (a copy of) the
	     MODIFY_EXPR hanging underneath.  */
	  *tp = copy_node (assignment);
	}
      else /* Else the RETURN_EXPR returns no value.  */
	{
	  *tp = NULL;
	  return (tree) (void *)1;
	}
    }
  else if (TREE_CODE (*tp) == SSA_NAME)
    {
      *tp = remap_ssa_name (*tp, id);
      *walk_subtrees = 0;
      return NULL;
    }

  /* Local variables and labels need to be replaced by equivalent
     variables.  We don't want to copy static variables; there's only
     one of those, no matter how many times we inline the containing
     function.  Similarly for globals from an outer function.  */
  else if (auto_var_in_fn_p (*tp, fn))
    {
      tree new_decl;

      /* Remap the declaration.  */
      new_decl = remap_decl (*tp, id);
      gcc_assert (new_decl);
      /* Replace this variable with the copy.  */
      STRIP_TYPE_NOPS (new_decl);
      *tp = new_decl;
      *walk_subtrees = 0;
    }
  else if (TREE_CODE (*tp) == STATEMENT_LIST)
    copy_statement_list (tp);
  else if (TREE_CODE (*tp) == SAVE_EXPR
	   || TREE_CODE (*tp) == TARGET_EXPR)
    remap_save_expr (tp, id->decl_map, walk_subtrees);
  else if (TREE_CODE (*tp) == LABEL_DECL
	   && (! DECL_CONTEXT (*tp)
	       || decl_function_context (*tp) == id->src_fn))
    /* These may need to be remapped for EH handling.  */
    *tp = remap_decl (*tp, id);
  else if (TREE_CODE (*tp) == BIND_EXPR)
    copy_bind_expr (tp, walk_subtrees, id);
  /* Types may need remapping as well.  */
  else if (TYPE_P (*tp))
    *tp = remap_type (*tp, id);

  /* If this is a constant, we have to copy the node iff the type will be
     remapped.  copy_tree_r will not copy a constant.  */
  else if (CONSTANT_CLASS_P (*tp))
    {
      tree new_type = remap_type (TREE_TYPE (*tp), id);

      if (new_type == TREE_TYPE (*tp))
	*walk_subtrees = 0;

      else if (TREE_CODE (*tp) == INTEGER_CST)
	*tp = wide_int_to_tree (new_type, wi::to_wide (*tp));
      else
	{
	  *tp = copy_node (*tp);
	  TREE_TYPE (*tp) = new_type;
	}
    }

  /* Otherwise, just copy the node.  Note that copy_tree_r already
     knows not to copy VAR_DECLs, etc., so this is safe.  */
  else
    {
      /* Here we handle trees that are not completely rewritten.
	 First we detect some inlining-induced bogosities for
	 discarding.  */
      if (TREE_CODE (*tp) == MODIFY_EXPR
	  && TREE_OPERAND (*tp, 0) == TREE_OPERAND (*tp, 1)
	  && (auto_var_in_fn_p (TREE_OPERAND (*tp, 0), fn)))
	{
	  /* Some assignments VAR = VAR; don't generate any rtl code
	     and thus don't count as variable modification.  Avoid
	     keeping bogosities like 0 = 0.  */
	  tree decl = TREE_OPERAND (*tp, 0), value;
	  tree *n;

	  n = id->decl_map->get (decl);
	  if (n)
	    {
	      value = *n;
	      STRIP_TYPE_NOPS (value);
	      if (TREE_CONSTANT (value) || TREE_READONLY (value))
		{
		  *tp = build_empty_stmt (EXPR_LOCATION (*tp));
		  return copy_tree_body_r (tp, walk_subtrees, data);
		}
	    }
	}
      else if (TREE_CODE (*tp) == INDIRECT_REF)
	{
	  /* Get rid of *& from inline substitutions that can happen when a
	     pointer argument is an ADDR_EXPR.  */
	  tree decl = TREE_OPERAND (*tp, 0);
	  tree *n = id->decl_map->get (decl);
	  if (n)
	    {
	      /* If we happen to get an ADDR_EXPR in n->value, strip
	         it manually here as we'll eventually get ADDR_EXPRs
		 which lie about their types pointed to.  In this case
		 build_fold_indirect_ref wouldn't strip the INDIRECT_REF,
		 but we absolutely rely on that.  As fold_indirect_ref
	         does other useful transformations, try that first, though.  */
	      tree type = TREE_TYPE (*tp);
	      tree ptr = id->do_not_unshare ? *n : unshare_expr (*n);
	      tree old = *tp;
	      *tp = id->do_not_fold ? NULL : gimple_fold_indirect_ref (ptr);
	      if (! *tp)
	        {
		  type = remap_type (type, id);
		  if (TREE_CODE (ptr) == ADDR_EXPR && !id->do_not_fold)
		    {
		      *tp
		        = fold_indirect_ref_1 (EXPR_LOCATION (ptr), type, ptr);
		      /* ???  We should either assert here or build
			 a VIEW_CONVERT_EXPR instead of blindly leaking
			 incompatible types to our IL.  */
		      if (! *tp)
			*tp = TREE_OPERAND (ptr, 0);
		    }
	          else
		    {
	              *tp = build1 (INDIRECT_REF, type, ptr);
		      TREE_THIS_VOLATILE (*tp) = TREE_THIS_VOLATILE (old);
		      TREE_SIDE_EFFECTS (*tp) = TREE_SIDE_EFFECTS (old);
		      TREE_READONLY (*tp) = TREE_READONLY (old);
		      /* We cannot propagate the TREE_THIS_NOTRAP flag if we
			 have remapped a parameter as the property might be
			 valid only for the parameter itself.  */
		      if (TREE_THIS_NOTRAP (old)
			  && (!is_parm (TREE_OPERAND (old, 0))
			      || (!id->transform_parameter && is_parm (ptr))))
		        TREE_THIS_NOTRAP (*tp) = 1;
		    }
		}
	      *walk_subtrees = 0;
	      return NULL;
	    }
	}
      else if (TREE_CODE (*tp) == MEM_REF && !id->do_not_fold)
	{
	  /* We need to re-canonicalize MEM_REFs from inline substitutions
	     that can happen when a pointer argument is an ADDR_EXPR.
	     Recurse here manually to allow that.  */
	  tree ptr = TREE_OPERAND (*tp, 0);
	  tree type = remap_type (TREE_TYPE (*tp), id);
	  tree old = *tp;
	  walk_tree (&ptr, copy_tree_body_r, data, NULL);
	  *tp = fold_build2 (MEM_REF, type, ptr, TREE_OPERAND (*tp, 1));
	  TREE_THIS_VOLATILE (*tp) = TREE_THIS_VOLATILE (old);
	  TREE_SIDE_EFFECTS (*tp) = TREE_SIDE_EFFECTS (old);
	  TREE_NO_WARNING (*tp) = TREE_NO_WARNING (old);
	  if (MR_DEPENDENCE_CLIQUE (old) != 0)
	    {
	      MR_DEPENDENCE_CLIQUE (*tp)
		= remap_dependence_clique (id, MR_DEPENDENCE_CLIQUE (old));
	      MR_DEPENDENCE_BASE (*tp) = MR_DEPENDENCE_BASE (old);
	    }
	  /* We cannot propagate the TREE_THIS_NOTRAP flag if we have
	     remapped a parameter as the property might be valid only
	     for the parameter itself.  */
	  if (TREE_THIS_NOTRAP (old)
	      && (!is_parm (TREE_OPERAND (old, 0))
		  || (!id->transform_parameter && is_parm (ptr))))
	    TREE_THIS_NOTRAP (*tp) = 1;
	  REF_REVERSE_STORAGE_ORDER (*tp) = REF_REVERSE_STORAGE_ORDER (old);
	  *walk_subtrees = 0;
	  return NULL;
	}

      /* Here is the "usual case".  Copy this tree node, and then
	 tweak some special cases.  */
      copy_tree_r (tp, walk_subtrees, NULL);

      /* If EXPR has block defined, map it to newly constructed block.
         When inlining we want EXPRs without block appear in the block
	 of function call if we are not remapping a type.  */
      if (EXPR_P (*tp))
	{
	  new_block = id->remapping_type_depth == 0 ? id->block : NULL;
	  if (TREE_BLOCK (*tp))
	    {
	      tree *n;
	      n = id->decl_map->get (TREE_BLOCK (*tp));
	      if (n)
		new_block = *n;
	    }
	  TREE_SET_BLOCK (*tp, new_block);
	}

      if (TREE_CODE (*tp) != OMP_CLAUSE)
	TREE_TYPE (*tp) = remap_type (TREE_TYPE (*tp), id);

      /* The copied TARGET_EXPR has never been expanded, even if the
	 original node was expanded already.  */
      if (TREE_CODE (*tp) == TARGET_EXPR && TREE_OPERAND (*tp, 3))
	{
	  TREE_OPERAND (*tp, 1) = TREE_OPERAND (*tp, 3);
	  TREE_OPERAND (*tp, 3) = NULL_TREE;
	}

      /* Variable substitution need not be simple.  In particular, the
	 INDIRECT_REF substitution above.  Make sure that TREE_CONSTANT
	 and friends are up-to-date.  */
      else if (TREE_CODE (*tp) == ADDR_EXPR)
	{
	  int invariant = is_gimple_min_invariant (*tp);
	  walk_tree (&TREE_OPERAND (*tp, 0), copy_tree_body_r, id, NULL);

	  /* Handle the case where we substituted an INDIRECT_REF
	     into the operand of the ADDR_EXPR.  */
	  if (TREE_CODE (TREE_OPERAND (*tp, 0)) == INDIRECT_REF
	      && !id->do_not_fold)
	    {
	      tree t = TREE_OPERAND (TREE_OPERAND (*tp, 0), 0);
	      if (TREE_TYPE (t) != TREE_TYPE (*tp))
		t = fold_convert (remap_type (TREE_TYPE (*tp), id), t);
	      *tp = t;
	    }
	  else
	    recompute_tree_invariant_for_addr_expr (*tp);

	  /* If this used to be invariant, but is not any longer,
	     then regimplification is probably needed.  */
	  if (invariant && !is_gimple_min_invariant (*tp))
	    id->regimplify = true;

	  *walk_subtrees = 0;
	}
      else if (TREE_CODE (*tp) == OMP_CLAUSE
	       && (OMP_CLAUSE_CODE (*tp) == OMP_CLAUSE_AFFINITY
		   || OMP_CLAUSE_CODE (*tp) == OMP_CLAUSE_DEPEND))
	{
	  tree t = OMP_CLAUSE_DECL (*tp);
	  if (TREE_CODE (t) == TREE_LIST
	      && TREE_PURPOSE (t)
	      && TREE_CODE (TREE_PURPOSE (t)) == TREE_VEC)
	    {
	      *walk_subtrees = 0;
	      OMP_CLAUSE_DECL (*tp) = copy_node (t);
	      t = OMP_CLAUSE_DECL (*tp);
	      TREE_PURPOSE (t) = copy_node (TREE_PURPOSE (t));
	      for (int i = 0; i <= 4; i++)
		walk_tree (&TREE_VEC_ELT (TREE_PURPOSE (t), i),
			   copy_tree_body_r, id, NULL);
	      if (TREE_VEC_ELT (TREE_PURPOSE (t), 5))
		remap_block (&TREE_VEC_ELT (TREE_PURPOSE (t), 5), id);
	      walk_tree (&TREE_VALUE (t), copy_tree_body_r, id, NULL);
	    }
	}
    }

  /* Keep iterating.  */
  return NULL_TREE;
}

/* Helper for remap_gimple_stmt.  Given an EH region number for the
   source function, map that to the duplicate EH region number in
   the destination function.  */

static int
remap_eh_region_nr (int old_nr, copy_body_data *id)
{
  eh_region old_r, new_r;

  old_r = get_eh_region_from_number_fn (id->src_cfun, old_nr);
  new_r = static_cast<eh_region> (*id->eh_map->get (old_r));

  return new_r->index;
}

/* Similar, but operate on INTEGER_CSTs.  */

static tree
remap_eh_region_tree_nr (tree old_t_nr, copy_body_data *id)
{
  int old_nr, new_nr;

  old_nr = tree_to_shwi (old_t_nr);
  new_nr = remap_eh_region_nr (old_nr, id);

  return build_int_cst (integer_type_node, new_nr);
}

/* Helper for copy_bb.  Remap statement STMT using the inlining
   information in ID.  Return the new statement copy.  */

static gimple_seq
remap_gimple_stmt (gimple *stmt, copy_body_data *id)
{
  gimple *copy = NULL;
  struct walk_stmt_info wi;
  bool skip_first = false;
  gimple_seq stmts = NULL;

  if (is_gimple_debug (stmt)
      && (gimple_debug_nonbind_marker_p (stmt)
	  ? !DECL_STRUCT_FUNCTION (id->dst_fn)->debug_nonbind_markers
	  : !opt_for_fn (id->dst_fn, flag_var_tracking_assignments)))
    return NULL;

  /* Begin by recognizing trees that we'll completely rewrite for the
     inlining context.  Our output for these trees is completely
     different from our input (e.g. RETURN_EXPR is deleted and morphs
     into an edge).  Further down, we'll handle trees that get
     duplicated and/or tweaked.  */

  /* When requested, GIMPLE_RETURN should be transformed to just the
     contained GIMPLE_ASSIGN.  The branch semantics of the return will
     be handled elsewhere by manipulating the CFG rather than the
     statement.  */
  if (gimple_code (stmt) == GIMPLE_RETURN && id->transform_return_to_modify)
    {
      tree retval = gimple_return_retval (as_a <greturn *> (stmt));

      /* If we're returning something, just turn that into an
	 assignment to the equivalent of the original RESULT_DECL.
	 If RETVAL is just the result decl, the result decl has
	 already been set (e.g. a recent "foo (&result_decl, ...)");
	 just toss the entire GIMPLE_RETURN.  Likewise for when the
	 call doesn't want the return value.  */
      if (retval
	  && (TREE_CODE (retval) != RESULT_DECL
	      && (!id->call_stmt
		  || gimple_call_lhs (id->call_stmt) != NULL_TREE)
	      && (TREE_CODE (retval) != SSA_NAME
		  || ! SSA_NAME_VAR (retval)
		  || TREE_CODE (SSA_NAME_VAR (retval)) != RESULT_DECL)))
        {
	  copy = gimple_build_assign (id->do_not_unshare
				      ? id->retvar : unshare_expr (id->retvar),
				      retval);
	  /* id->retvar is already substituted.  Skip it on later remapping.  */
	  skip_first = true;
	}
      else
	return NULL;
    }
  else if (gimple_has_substatements (stmt))
    {
      gimple_seq s1, s2;

      /* When cloning bodies from the C++ front end, we will be handed bodies
	 in High GIMPLE form.  Handle here all the High GIMPLE statements that
	 have embedded statements.  */
      switch (gimple_code (stmt))
	{
	case GIMPLE_BIND:
	  copy = copy_gimple_bind (as_a <gbind *> (stmt), id);
	  break;

	case GIMPLE_CATCH:
	  {
	    gcatch *catch_stmt = as_a <gcatch *> (stmt);
	    s1 = remap_gimple_seq (gimple_catch_handler (catch_stmt), id);
	    copy = gimple_build_catch (gimple_catch_types (catch_stmt), s1);
	  }
	  break;

	case GIMPLE_EH_FILTER:
	  s1 = remap_gimple_seq (gimple_eh_filter_failure (stmt), id);
	  copy = gimple_build_eh_filter (gimple_eh_filter_types (stmt), s1);
	  break;

	case GIMPLE_TRY:
	  s1 = remap_gimple_seq (gimple_try_eval (stmt), id);
	  s2 = remap_gimple_seq (gimple_try_cleanup (stmt), id);
	  copy = gimple_build_try (s1, s2, gimple_try_kind (stmt));
	  break;

	case GIMPLE_WITH_CLEANUP_EXPR:
	  s1 = remap_gimple_seq (gimple_wce_cleanup (stmt), id);
	  copy = gimple_build_wce (s1);
	  break;

	case GIMPLE_OMP_PARALLEL:
	  {
	    gomp_parallel *omp_par_stmt = as_a <gomp_parallel *> (stmt);
	    s1 = remap_gimple_seq (gimple_omp_body (omp_par_stmt), id);
	    copy = gimple_build_omp_parallel
	             (s1,
		      gimple_omp_parallel_clauses (omp_par_stmt),
		      gimple_omp_parallel_child_fn (omp_par_stmt),
		      gimple_omp_parallel_data_arg (omp_par_stmt));
	  }
	  break;

	case GIMPLE_OMP_TASK:
	  s1 = remap_gimple_seq (gimple_omp_body (stmt), id);
	  copy = gimple_build_omp_task
	           (s1,
		    gimple_omp_task_clauses (stmt),
		    gimple_omp_task_child_fn (stmt),
		    gimple_omp_task_data_arg (stmt),
		    gimple_omp_task_copy_fn (stmt),
		    gimple_omp_task_arg_size (stmt),
		    gimple_omp_task_arg_align (stmt));
	  break;

	case GIMPLE_OMP_FOR:
	  s1 = remap_gimple_seq (gimple_omp_body (stmt), id);
	  s2 = remap_gimple_seq (gimple_omp_for_pre_body (stmt), id);
	  copy = gimple_build_omp_for (s1, gimple_omp_for_kind (stmt),
				       gimple_omp_for_clauses (stmt),
				       gimple_omp_for_collapse (stmt), s2);
	  {
	    size_t i;
	    for (i = 0; i < gimple_omp_for_collapse (stmt); i++)
	      {
		gimple_omp_for_set_index (copy, i,
					  gimple_omp_for_index (stmt, i));
		gimple_omp_for_set_initial (copy, i,
					    gimple_omp_for_initial (stmt, i));
		gimple_omp_for_set_final (copy, i,
					  gimple_omp_for_final (stmt, i));
		gimple_omp_for_set_incr (copy, i,
					 gimple_omp_for_incr (stmt, i));
		gimple_omp_for_set_cond (copy, i,
					 gimple_omp_for_cond (stmt, i));
	      }
	  }
	  break;

	case GIMPLE_OMP_MASTER:
	  s1 = remap_gimple_seq (gimple_omp_body (stmt), id);
	  copy = gimple_build_omp_master (s1);
	  break;

	case GIMPLE_OMP_TASKGROUP:
	  s1 = remap_gimple_seq (gimple_omp_body (stmt), id);
	  copy = gimple_build_omp_taskgroup
		   (s1, gimple_omp_taskgroup_clauses (stmt));
	  break;

	case GIMPLE_OMP_ORDERED:
	  s1 = remap_gimple_seq (gimple_omp_body (stmt), id);
	  copy = gimple_build_omp_ordered
		   (s1,
		    gimple_omp_ordered_clauses (as_a <gomp_ordered *> (stmt)));
	  break;

	case GIMPLE_OMP_SCAN:
	  s1 = remap_gimple_seq (gimple_omp_body (stmt), id);
	  copy = gimple_build_omp_scan
		   (s1, gimple_omp_scan_clauses (as_a <gomp_scan *> (stmt)));
	  break;

	case GIMPLE_OMP_SECTION:
	  s1 = remap_gimple_seq (gimple_omp_body (stmt), id);
	  copy = gimple_build_omp_section (s1);
	  break;

	case GIMPLE_OMP_SECTIONS:
	  s1 = remap_gimple_seq (gimple_omp_body (stmt), id);
	  copy = gimple_build_omp_sections
	           (s1, gimple_omp_sections_clauses (stmt));
	  break;

	case GIMPLE_OMP_SINGLE:
	  s1 = remap_gimple_seq (gimple_omp_body (stmt), id);
	  copy = gimple_build_omp_single
	           (s1, gimple_omp_single_clauses (stmt));
	  break;

	case GIMPLE_OMP_TARGET:
	  s1 = remap_gimple_seq (gimple_omp_body (stmt), id);
	  copy = gimple_build_omp_target
		   (s1, gimple_omp_target_kind (stmt),
		    gimple_omp_target_clauses (stmt));
	  break;

	case GIMPLE_OMP_TEAMS:
	  s1 = remap_gimple_seq (gimple_omp_body (stmt), id);
	  copy = gimple_build_omp_teams
		   (s1, gimple_omp_teams_clauses (stmt));
	  break;

	case GIMPLE_OMP_CRITICAL:
	  s1 = remap_gimple_seq (gimple_omp_body (stmt), id);
	  copy = gimple_build_omp_critical (s1,
					    gimple_omp_critical_name
					      (as_a <gomp_critical *> (stmt)),
					    gimple_omp_critical_clauses
					      (as_a <gomp_critical *> (stmt)));
	  break;

	case GIMPLE_TRANSACTION:
	  {
	    gtransaction *old_trans_stmt = as_a <gtransaction *> (stmt);
	    gtransaction *new_trans_stmt;
	    s1 = remap_gimple_seq (gimple_transaction_body (old_trans_stmt),
				   id);
	    copy = new_trans_stmt = gimple_build_transaction (s1);
	    gimple_transaction_set_subcode (new_trans_stmt,
	      gimple_transaction_subcode (old_trans_stmt));
	    gimple_transaction_set_label_norm (new_trans_stmt,
	      gimple_transaction_label_norm (old_trans_stmt));
	    gimple_transaction_set_label_uninst (new_trans_stmt,
	      gimple_transaction_label_uninst (old_trans_stmt));
	    gimple_transaction_set_label_over (new_trans_stmt,
	      gimple_transaction_label_over (old_trans_stmt));
	  }
	  break;

	default:
	  gcc_unreachable ();
	}
    }
  else
    {
      if (gimple_assign_copy_p (stmt)
	  && gimple_assign_lhs (stmt) == gimple_assign_rhs1 (stmt)
	  && auto_var_in_fn_p (gimple_assign_lhs (stmt), id->src_fn))
	{
	  /* Here we handle statements that are not completely rewritten.
	     First we detect some inlining-induced bogosities for
	     discarding.  */

	  /* Some assignments VAR = VAR; don't generate any rtl code
	     and thus don't count as variable modification.  Avoid
	     keeping bogosities like 0 = 0.  */
	  tree decl = gimple_assign_lhs (stmt), value;
	  tree *n;

	  n = id->decl_map->get (decl);
	  if (n)
	    {
	      value = *n;
	      STRIP_TYPE_NOPS (value);
	      if (TREE_CONSTANT (value) || TREE_READONLY (value))
		return NULL;
	    }
	}

      /* For *ptr_N ={v} {CLOBBER}, if ptr_N is SSA_NAME defined
	 in a block that we aren't copying during tree_function_versioning,
	 just drop the clobber stmt.  */
      if (id->blocks_to_copy && gimple_clobber_p (stmt))
	{
	  tree lhs = gimple_assign_lhs (stmt);
	  if (TREE_CODE (lhs) == MEM_REF
	      && TREE_CODE (TREE_OPERAND (lhs, 0)) == SSA_NAME)
	    {
	      gimple *def_stmt = SSA_NAME_DEF_STMT (TREE_OPERAND (lhs, 0));
	      if (gimple_bb (def_stmt)
		  && !bitmap_bit_p (id->blocks_to_copy,
				    gimple_bb (def_stmt)->index))
		return NULL;
	    }
	}
     
      /* We do not allow CLOBBERs of handled components.  In case
	 returned value is stored via such handled component, remove
	 the clobber so stmt verifier is happy.  */
      if (gimple_clobber_p (stmt)
	  && TREE_CODE (gimple_assign_lhs (stmt)) == RESULT_DECL)
	{
	  tree remapped = remap_decl (gimple_assign_lhs (stmt), id);
	  if (!DECL_P (remapped)
	      && TREE_CODE (remapped) != MEM_REF)
	    return NULL;
	}

      if (gimple_debug_bind_p (stmt))
	{
	  gdebug *copy
	    = gimple_build_debug_bind (gimple_debug_bind_get_var (stmt),
				       gimple_debug_bind_get_value (stmt),
				       stmt);
	  if (id->reset_location)
	    gimple_set_location (copy, input_location);
	  id->debug_stmts.safe_push (copy);
	  gimple_seq_add_stmt (&stmts, copy);
	  return stmts;
	}
      if (gimple_debug_source_bind_p (stmt))
	{
	  gdebug *copy = gimple_build_debug_source_bind
	                   (gimple_debug_source_bind_get_var (stmt),
			    gimple_debug_source_bind_get_value (stmt),
			    stmt);
	  if (id->reset_location)
	    gimple_set_location (copy, input_location);
	  id->debug_stmts.safe_push (copy);
	  gimple_seq_add_stmt (&stmts, copy);
	  return stmts;
	}
      if (gimple_debug_nonbind_marker_p (stmt))
	{
	  /* If the inlined function has too many debug markers,
	     don't copy them.  */
	  if (id->src_cfun->debug_marker_count
	      > param_max_debug_marker_count
	      || id->reset_location)
	    return stmts;

	  gdebug *copy = as_a <gdebug *> (gimple_copy (stmt));
	  id->debug_stmts.safe_push (copy);
	  gimple_seq_add_stmt (&stmts, copy);
	  return stmts;
	}

      /* Create a new deep copy of the statement.  */
      copy = gimple_copy (stmt);

      /* Clear flags that need revisiting.  */
      if (gcall *call_stmt = dyn_cast <gcall *> (copy))
        {
	  if (gimple_call_tail_p (call_stmt))
	    gimple_call_set_tail (call_stmt, false);
	  if (gimple_call_from_thunk_p (call_stmt))
	    gimple_call_set_from_thunk (call_stmt, false);
	  if (gimple_call_internal_p (call_stmt))
	    switch (gimple_call_internal_fn (call_stmt))
	      {
	      case IFN_GOMP_SIMD_LANE:
	      case IFN_GOMP_SIMD_VF:
	      case IFN_GOMP_SIMD_LAST_LANE:
	      case IFN_GOMP_SIMD_ORDERED_START:
	      case IFN_GOMP_SIMD_ORDERED_END:
		DECL_STRUCT_FUNCTION (id->dst_fn)->has_simduid_loops = true;
	        break;
	      default:
		break;
	      }
	}

      /* Remap the region numbers for __builtin_eh_{pointer,filter},
	 RESX and EH_DISPATCH.  */
      if (id->eh_map)
	switch (gimple_code (copy))
	  {
	  case GIMPLE_CALL:
	    {
	      tree r, fndecl = gimple_call_fndecl (copy);
	      if (fndecl && fndecl_built_in_p (fndecl, BUILT_IN_NORMAL))
		switch (DECL_FUNCTION_CODE (fndecl))
		  {
		  case BUILT_IN_EH_COPY_VALUES:
		    r = gimple_call_arg (copy, 1);
		    r = remap_eh_region_tree_nr (r, id);
		    gimple_call_set_arg (copy, 1, r);
		    /* FALLTHRU */

		  case BUILT_IN_EH_POINTER:
		  case BUILT_IN_EH_FILTER:
		    r = gimple_call_arg (copy, 0);
		    r = remap_eh_region_tree_nr (r, id);
		    gimple_call_set_arg (copy, 0, r);
		    break;

		  default:
		    break;
		  }

	      /* Reset alias info if we didn't apply measures to
		 keep it valid over inlining by setting DECL_PT_UID.  */
	      if (!id->src_cfun->gimple_df
		  || !id->src_cfun->gimple_df->ipa_pta)
		gimple_call_reset_alias_info (as_a <gcall *> (copy));
	    }
	    break;

	  case GIMPLE_RESX:
	    {
	      gresx *resx_stmt = as_a <gresx *> (copy);
	      int r = gimple_resx_region (resx_stmt);
	      r = remap_eh_region_nr (r, id);
	      gimple_resx_set_region (resx_stmt, r);
	    }
	    break;

	  case GIMPLE_EH_DISPATCH:
	    {
	      geh_dispatch *eh_dispatch = as_a <geh_dispatch *> (copy);
	      int r = gimple_eh_dispatch_region (eh_dispatch);
	      r = remap_eh_region_nr (r, id);
	      gimple_eh_dispatch_set_region (eh_dispatch, r);
	    }
	    break;

	  default:
	    break;
	  }
    }

  /* If STMT has a block defined, map it to the newly constructed block.  */
  if (tree block = gimple_block (copy))
    {
      tree *n;
      n = id->decl_map->get (block);
      gcc_assert (n);
      gimple_set_block (copy, *n);
    }
  if (id->param_body_adjs)
    {
      gimple_seq extra_stmts = NULL;
      id->param_body_adjs->modify_gimple_stmt (&copy, &extra_stmts);
      if (!gimple_seq_empty_p (extra_stmts))
	{
	  memset (&wi, 0, sizeof (wi));
	  wi.info = id;
	  for (gimple_stmt_iterator egsi = gsi_start (extra_stmts);
	       !gsi_end_p (egsi);
	       gsi_next (&egsi))
	    walk_gimple_op (gsi_stmt (egsi), remap_gimple_op_r, &wi);
	  gimple_seq_add_seq (&stmts, extra_stmts);
	}
    }

  if (id->reset_location)
    gimple_set_location (copy, input_location);

  /* Debug statements ought to be rebuilt and not copied.  */
  gcc_checking_assert (!is_gimple_debug (copy));

  /* Remap all the operands in COPY.  */
  memset (&wi, 0, sizeof (wi));
  wi.info = id;
  if (skip_first)
    walk_tree (gimple_op_ptr (copy, 1), remap_gimple_op_r, &wi, NULL);
  else
    walk_gimple_op (copy, remap_gimple_op_r, &wi);

  /* Clear the copied virtual operands.  We are not remapping them here
     but are going to recreate them from scratch.  */
  if (gimple_has_mem_ops (copy))
    {
      gimple_set_vdef (copy, NULL_TREE);
      gimple_set_vuse (copy, NULL_TREE);
    }

  if (cfun->can_throw_non_call_exceptions)
    {
      /* When inlining a function which does not have non-call exceptions
	 enabled into a function that has (which only happens with
	 always-inline) we have to fixup stmts that cannot throw.  */
      if (gcond *cond = dyn_cast <gcond *> (copy))
	if (gimple_could_trap_p (cond))
	  {
	    gassign *cmp
	      = gimple_build_assign (make_ssa_name (boolean_type_node),
				     gimple_cond_code (cond),
				     gimple_cond_lhs (cond),
				     gimple_cond_rhs (cond));
	    gimple_seq_add_stmt (&stmts, cmp);
	    gimple_cond_set_code (cond, NE_EXPR);
	    gimple_cond_set_lhs (cond, gimple_assign_lhs (cmp));
	    gimple_cond_set_rhs (cond, boolean_false_node);
	  }
    }

  gimple_seq_add_stmt (&stmts, copy);
  return stmts;
}


/* Copy basic block, scale profile accordingly.  Edges will be taken care of
   later  */

static basic_block
copy_bb (copy_body_data *id, basic_block bb,
         profile_count num, profile_count den)
{
  gimple_stmt_iterator gsi, copy_gsi, seq_gsi;
  basic_block copy_basic_block;
  tree decl;
  basic_block prev;

  profile_count::adjust_for_ipa_scaling (&num, &den);

  /* Search for previous copied basic block.  */
  prev = bb->prev_bb;
  while (!prev->aux)
    prev = prev->prev_bb;

  /* create_basic_block() will append every new block to
     basic_block_info automatically.  */
  copy_basic_block = create_basic_block (NULL, (basic_block) prev->aux);
  copy_basic_block->count = bb->count.apply_scale (num, den);

  copy_gsi = gsi_start_bb (copy_basic_block);

  for (gsi = gsi_start_bb (bb); !gsi_end_p (gsi); gsi_next (&gsi))
    {
      gimple_seq stmts;
      gimple *stmt = gsi_stmt (gsi);
      gimple *orig_stmt = stmt;
      gimple_stmt_iterator stmts_gsi;
      bool stmt_added = false;

      id->regimplify = false;
      stmts = remap_gimple_stmt (stmt, id);

      if (gimple_seq_empty_p (stmts))
	continue;

      seq_gsi = copy_gsi;

      for (stmts_gsi = gsi_start (stmts);
	   !gsi_end_p (stmts_gsi); )
	{
	  stmt = gsi_stmt (stmts_gsi);

	  /* Advance iterator now before stmt is moved to seq_gsi.  */
	  gsi_next (&stmts_gsi);

	  if (gimple_nop_p (stmt))
	      continue;

	  gimple_duplicate_stmt_histograms (cfun, stmt, id->src_cfun,
					    orig_stmt);

	  /* With return slot optimization we can end up with
	     non-gimple (foo *)&this->m, fix that here.  */
	  if (is_gimple_assign (stmt)
	      && CONVERT_EXPR_CODE_P (gimple_assign_rhs_code (stmt))
	      && !is_gimple_val (gimple_assign_rhs1 (stmt)))
	    {
	      tree new_rhs;
	      new_rhs = force_gimple_operand_gsi (&seq_gsi,
						  gimple_assign_rhs1 (stmt),
						  true, NULL, false,
						  GSI_CONTINUE_LINKING);
	      gimple_assign_set_rhs1 (stmt, new_rhs);
	      id->regimplify = false;
	    }

	  gsi_insert_after (&seq_gsi, stmt, GSI_NEW_STMT);

	  if (id->regimplify)
	    gimple_regimplify_operands (stmt, &seq_gsi);

	  stmt_added = true;
	}

      if (!stmt_added)
	continue;

      /* If copy_basic_block has been empty at the start of this iteration,
	 call gsi_start_bb again to get at the newly added statements.  */
      if (gsi_end_p (copy_gsi))
	copy_gsi = gsi_start_bb (copy_basic_block);
      else
	gsi_next (&copy_gsi);

      /* Process the new statement.  The call to gimple_regimplify_operands
	 possibly turned the statement into multiple statements, we
	 need to process all of them.  */
      do
	{
	  tree fn;
	  gcall *call_stmt;

	  stmt = gsi_stmt (copy_gsi);
	  call_stmt = dyn_cast <gcall *> (stmt);
	  if (call_stmt
	      && gimple_call_va_arg_pack_p (call_stmt)
	      && id->call_stmt
	      && ! gimple_call_va_arg_pack_p (id->call_stmt))
	    {
	      /* __builtin_va_arg_pack () should be replaced by
		 all arguments corresponding to ... in the caller.  */
	      tree p;
	      gcall *new_call;
	      vec<tree> argarray;
	      size_t nargs_caller = gimple_call_num_args (id->call_stmt);
	      size_t nargs = nargs_caller;

	      for (p = DECL_ARGUMENTS (id->src_fn); p; p = DECL_CHAIN (p))
		nargs--;

	      /* Create the new array of arguments.  */
	      size_t nargs_callee = gimple_call_num_args (call_stmt);
	      size_t n = nargs + nargs_callee;
	      argarray.create (n);
	      argarray.safe_grow_cleared (n, true);

	      /* Copy all the arguments before '...'  */
	      if (nargs_callee)
		memcpy (argarray.address (),
			gimple_call_arg_ptr (call_stmt, 0),
			nargs_callee * sizeof (tree));

	      /* Append the arguments passed in '...'  */
	      if (nargs)
		memcpy (argarray.address () + nargs_callee,
			gimple_call_arg_ptr (id->call_stmt, 0)
			+ (nargs_caller - nargs), nargs * sizeof (tree));

	      new_call = gimple_build_call_vec (gimple_call_fn (call_stmt),
						argarray);

	      argarray.release ();

	      /* Copy all GIMPLE_CALL flags, location and block, except
		 GF_CALL_VA_ARG_PACK.  */
	      gimple_call_copy_flags (new_call, call_stmt);
	      gimple_call_set_va_arg_pack (new_call, false);
	      gimple_call_set_fntype (new_call, gimple_call_fntype (call_stmt));
	      /* location includes block.  */
	      gimple_set_location (new_call, gimple_location (stmt));
	      gimple_call_set_lhs (new_call, gimple_call_lhs (call_stmt));

	      gsi_replace (&copy_gsi, new_call, false);
	      stmt = new_call;
	    }
	  else if (call_stmt
		   && id->call_stmt
		   && (decl = gimple_call_fndecl (stmt))
		   && fndecl_built_in_p (decl, BUILT_IN_VA_ARG_PACK_LEN))
	    {
	      /* __builtin_va_arg_pack_len () should be replaced by
		 the number of anonymous arguments.  */
	      size_t nargs = gimple_call_num_args (id->call_stmt);
	      tree count, p;
	      gimple *new_stmt;

	      for (p = DECL_ARGUMENTS (id->src_fn); p; p = DECL_CHAIN (p))
		nargs--;

	      if (!gimple_call_lhs (stmt))
		{
		  /* Drop unused calls.  */
		  gsi_remove (&copy_gsi, false);
		  continue;
		}
	      else if (!gimple_call_va_arg_pack_p (id->call_stmt))
		{
		  count = build_int_cst (integer_type_node, nargs);
		  new_stmt = gimple_build_assign (gimple_call_lhs (stmt), count);
		  gsi_replace (&copy_gsi, new_stmt, false);
		  stmt = new_stmt;
		}
	      else if (nargs != 0)
		{
		  tree newlhs = create_tmp_reg_or_ssa_name (integer_type_node);
		  count = build_int_cst (integer_type_node, nargs);
		  new_stmt = gimple_build_assign (gimple_call_lhs (stmt),
						  PLUS_EXPR, newlhs, count);
		  gimple_call_set_lhs (stmt, newlhs);
		  gsi_insert_after (&copy_gsi, new_stmt, GSI_NEW_STMT);
		}
	    }
	  else if (call_stmt
		   && id->call_stmt
		   && gimple_call_internal_p (stmt)
		   && gimple_call_internal_fn (stmt) == IFN_TSAN_FUNC_EXIT)
	    {
	      /* Drop TSAN_FUNC_EXIT () internal calls during inlining.  */
	      gsi_remove (&copy_gsi, false);
	      continue;
	    }

	  /* Statements produced by inlining can be unfolded, especially
	     when we constant propagated some operands.  We can't fold
	     them right now for two reasons:
	     1) folding require SSA_NAME_DEF_STMTs to be correct
	     2) we can't change function calls to builtins.
	     So we just mark statement for later folding.  We mark
	     all new statements, instead just statements that has changed
	     by some nontrivial substitution so even statements made
	     foldable indirectly are updated.  If this turns out to be
	     expensive, copy_body can be told to watch for nontrivial
	     changes.  */
	  if (id->statements_to_fold)
	    id->statements_to_fold->add (stmt);

	  /* We're duplicating a CALL_EXPR.  Find any corresponding
	     callgraph edges and update or duplicate them.  */
	  if (gcall *call_stmt = dyn_cast <gcall *> (stmt))
	    {
	      struct cgraph_edge *edge;

	      switch (id->transform_call_graph_edges)
		{
		case CB_CGE_DUPLICATE:
		  edge = id->src_node->get_edge (orig_stmt);
		  if (edge)
		    {
		      struct cgraph_edge *old_edge = edge;

		      /* A speculative call is consist of multiple
			 edges - indirect edge and one or more direct edges
			 Duplicate the whole thing and distribute frequencies
			 accordingly.  */
		      if (edge->speculative)
			{
			  int n = 0;
			  profile_count direct_cnt
				 = profile_count::zero ();

			  /* First figure out the distribution of counts
			     so we can re-scale BB profile accordingly.  */
			  for (cgraph_edge *e = old_edge; e;
			       e = e->next_speculative_call_target ())
			    direct_cnt = direct_cnt + e->count;

			  cgraph_edge *indirect
				 = old_edge->speculative_call_indirect_edge ();
			  profile_count indir_cnt = indirect->count;

			  /* Next iterate all direct edges, clone it and its
			     corresponding reference and update profile.  */
			  for (cgraph_edge *e = old_edge;
			       e;
			       e = e->next_speculative_call_target ())
			    {
			      profile_count cnt = e->count;

			      id->dst_node->clone_reference
				 (e->speculative_call_target_ref (), stmt);
			      edge = e->clone (id->dst_node, call_stmt,
					       gimple_uid (stmt), num, den,
					       true);
			      profile_probability prob
				 = cnt.probability_in (direct_cnt
						       + indir_cnt);
			      edge->count
				 = copy_basic_block->count.apply_probability
					 (prob);
			      n++;
			    }
			  gcc_checking_assert
				 (indirect->num_speculative_call_targets_p ()
				  == n);

			  /* Duplicate the indirect edge after all direct edges
			     cloned.  */
			  indirect = indirect->clone (id->dst_node, call_stmt,
						      gimple_uid (stmt),
						      num, den,
						      true);

			  profile_probability prob
			     = indir_cnt.probability_in (direct_cnt
							 + indir_cnt);
			  indirect->count
			     = copy_basic_block->count.apply_probability (prob);
			}
		      else
			{
			  edge = edge->clone (id->dst_node, call_stmt,
					      gimple_uid (stmt),
					      num, den,
					      true);
			  edge->count = copy_basic_block->count;
			}
		    }
		  break;

		case CB_CGE_MOVE_CLONES:
		  id->dst_node->set_call_stmt_including_clones (orig_stmt,
								call_stmt);
		  edge = id->dst_node->get_edge (stmt);
		  break;

		case CB_CGE_MOVE:
		  edge = id->dst_node->get_edge (orig_stmt);
		  if (edge)
		    edge = cgraph_edge::set_call_stmt (edge, call_stmt);
		  break;

		default:
		  gcc_unreachable ();
		}

	      /* Constant propagation on argument done during inlining
		 may create new direct call.  Produce an edge for it.  */
	      if ((!edge
		   || (edge->indirect_inlining_edge
		       && id->transform_call_graph_edges == CB_CGE_MOVE_CLONES))
		  && id->dst_node->definition
		  && (fn = gimple_call_fndecl (stmt)) != NULL)
		{
		  struct cgraph_node *dest = cgraph_node::get_create (fn);

		  /* We have missing edge in the callgraph.  This can happen
		     when previous inlining turned an indirect call into a
		     direct call by constant propagating arguments or we are
		     producing dead clone (for further cloning).  In all
		     other cases we hit a bug (incorrect node sharing is the
		     most common reason for missing edges).  */
		  gcc_assert (!dest->definition
			      || dest->address_taken
		  	      || !id->src_node->definition
			      || !id->dst_node->definition);
		  if (id->transform_call_graph_edges == CB_CGE_MOVE_CLONES)
		    id->dst_node->create_edge_including_clones
		      (dest, orig_stmt, call_stmt, bb->count,
		       CIF_ORIGINALLY_INDIRECT_CALL);
		  else
		    id->dst_node->create_edge (dest, call_stmt,
					bb->count)->inline_failed
		      = CIF_ORIGINALLY_INDIRECT_CALL;
		  if (dump_file)
		    {
		      fprintf (dump_file, "Created new direct edge to %s\n",
			       dest->dump_name ());
		    }
		}

	      notice_special_calls (as_a <gcall *> (stmt));
	    }

	  maybe_duplicate_eh_stmt_fn (cfun, stmt, id->src_cfun, orig_stmt,
				      id->eh_map, id->eh_lp_nr);

	  gsi_next (&copy_gsi);
	}
      while (!gsi_end_p (copy_gsi));

      copy_gsi = gsi_last_bb (copy_basic_block);
    }

  return copy_basic_block;
}

/* Inserting Single Entry Multiple Exit region in SSA form into code in SSA
   form is quite easy, since dominator relationship for old basic blocks does
   not change.

   There is however exception where inlining might change dominator relation
   across EH edges from basic block within inlined functions destinating
   to landing pads in function we inline into.

   The function fills in PHI_RESULTs of such PHI nodes if they refer
   to gimple regs.  Otherwise, the function mark PHI_RESULT of such
   PHI nodes for renaming.  For non-gimple regs, renaming is safe: the
   EH edges are abnormal and SSA_NAME_OCCURS_IN_ABNORMAL_PHI must be
   set, and this means that there will be no overlapping live ranges
   for the underlying symbol.

   This might change in future if we allow redirecting of EH edges and
   we might want to change way build CFG pre-inlining to include
   all the possible edges then.  */
static void
update_ssa_across_abnormal_edges (basic_block bb, basic_block ret_bb,
				  bool can_throw, bool nonlocal_goto)
{
  edge e;
  edge_iterator ei;

  FOR_EACH_EDGE (e, ei, bb->succs)
    if (!e->dest->aux
	|| ((basic_block)e->dest->aux)->index == ENTRY_BLOCK)
      {