Update 4.8.1 to 4.8.3.

My previous drop was the wrong version. The platform mingw is
currently using 4.8.3, not 4.8.1 (not sure how I got that wrong).

From ftp://ftp.gnu.org/gnu/gcc/gcc-4.8.3/gcc-4.8.3.tar.bz2.

Bug: http://b/26523949
Change-Id: Id85f1bdcbbaf78c7d0b5a69e74c798a08f341c35

1 files changed, 1364 insertions, 0 deletions

diff --git a/gcc-4.8.3/gcc/tree-flow-inline.h b/gcc-4.8.3/gcc/tree-flow-inline.h
new file mode 100644
index 000000000..e3a70bf20
--- /dev/null
+++ b/gcc-4.8.3/gcc/tree-flow-inline.h
@@ -0,0 +1,1364 @@
+/* Inline functions for tree-flow.h
+   Copyright (C) 2001-2013 Free Software Foundation, Inc.
+   Contributed by Diego Novillo <dnovillo@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/>.  */
+
+#ifndef _TREE_FLOW_INLINE_H
+#define _TREE_FLOW_INLINE_H 1
+
+/* Inline functions for manipulating various data structures defined in
+   tree-flow.h.  See tree-flow.h for documentation.  */
+
+/* Return true when gimple SSA form was built.
+   gimple_in_ssa_p is queried by gimplifier in various early stages before SSA
+   infrastructure is initialized.  Check for presence of the datastructures
+   at first place.  */
+static inline bool
+gimple_in_ssa_p (const struct function *fun)
+{
+  return fun && fun->gimple_df && fun->gimple_df->in_ssa_p;
+}
+
+/* Artificial variable used for the virtual operand FUD chain.  */
+static inline tree
+gimple_vop (const struct function *fun)
+{
+  gcc_checking_assert (fun && fun->gimple_df);
+  return fun->gimple_df->vop;
+}
+
+/* Initialize the hashtable iterator HTI to point to hashtable TABLE */
+
+static inline void *
+first_htab_element (htab_iterator *hti, htab_t table)
+{
+  hti->htab = table;
+  hti->slot = table->entries;
+  hti->limit = hti->slot + htab_size (table);
+  do
+    {
+      PTR x = *(hti->slot);
+      if (x != HTAB_EMPTY_ENTRY && x != HTAB_DELETED_ENTRY)
+	break;
+    } while (++(hti->slot) < hti->limit);
+
+  if (hti->slot < hti->limit)
+    return *(hti->slot);
+  return NULL;
+}
+
+/* Return current non-empty/deleted slot of the hashtable pointed to by HTI,
+   or NULL if we have  reached the end.  */
+
+static inline bool
+end_htab_p (const htab_iterator *hti)
+{
+  if (hti->slot >= hti->limit)
+    return true;
+  return false;
+}
+
+/* Advance the hashtable iterator pointed to by HTI to the next element of the
+   hashtable.  */
+
+static inline void *
+next_htab_element (htab_iterator *hti)
+{
+  while (++(hti->slot) < hti->limit)
+    {
+      PTR x = *(hti->slot);
+      if (x != HTAB_EMPTY_ENTRY && x != HTAB_DELETED_ENTRY)
+	return x;
+    };
+  return NULL;
+}
+
+/* Get the number of the next statement uid to be allocated.  */
+static inline unsigned int
+gimple_stmt_max_uid (struct function *fn)
+{
+  return fn->last_stmt_uid;
+}
+
+/* Set the number of the next statement uid to be allocated.  */
+static inline void
+set_gimple_stmt_max_uid (struct function *fn, unsigned int maxid)
+{
+  fn->last_stmt_uid = maxid;
+}
+
+/* Set the number of the next statement uid to be allocated.  */
+static inline unsigned int
+inc_gimple_stmt_max_uid (struct function *fn)
+{
+  return fn->last_stmt_uid++;
+}
+
+/* Return the line number for EXPR, or return -1 if we have no line
+   number information for it.  */
+static inline int
+get_lineno (const_gimple stmt)
+{
+  location_t loc;
+
+  if (!stmt)
+    return -1;
+
+  loc = gimple_location (stmt);
+  if (loc == UNKNOWN_LOCATION)
+    return -1;
+
+  return LOCATION_LINE (loc);
+}
+
+/* Delink an immediate_uses node from its chain.  */
+static inline void
+delink_imm_use (ssa_use_operand_t *linknode)
+{
+  /* Return if this node is not in a list.  */
+  if (linknode->prev == NULL)
+    return;
+
+  linknode->prev->next = linknode->next;
+  linknode->next->prev = linknode->prev;
+  linknode->prev = NULL;
+  linknode->next = NULL;
+}
+
+/* Link ssa_imm_use node LINKNODE into the chain for LIST.  */
+static inline void
+link_imm_use_to_list (ssa_use_operand_t *linknode, ssa_use_operand_t *list)
+{
+  /* Link the new node at the head of the list.  If we are in the process of
+     traversing the list, we won't visit any new nodes added to it.  */
+  linknode->prev = list;
+  linknode->next = list->next;
+  list->next->prev = linknode;
+  list->next = linknode;
+}
+
+/* Link ssa_imm_use node LINKNODE into the chain for DEF.  */
+static inline void
+link_imm_use (ssa_use_operand_t *linknode, tree def)
+{
+  ssa_use_operand_t *root;
+
+  if (!def || TREE_CODE (def) != SSA_NAME)
+    linknode->prev = NULL;
+  else
+    {
+      root = &(SSA_NAME_IMM_USE_NODE (def));
+      if (linknode->use)
+        gcc_checking_assert (*(linknode->use) == def);
+      link_imm_use_to_list (linknode, root);
+    }
+}
+
+/* Set the value of a use pointed to by USE to VAL.  */
+static inline void
+set_ssa_use_from_ptr (use_operand_p use, tree val)
+{
+  delink_imm_use (use);
+  *(use->use) = val;
+  link_imm_use (use, val);
+}
+
+/* Link ssa_imm_use node LINKNODE into the chain for DEF, with use occurring
+   in STMT.  */
+static inline void
+link_imm_use_stmt (ssa_use_operand_t *linknode, tree def, gimple stmt)
+{
+  if (stmt)
+    link_imm_use (linknode, def);
+  else
+    link_imm_use (linknode, NULL);
+  linknode->loc.stmt = stmt;
+}
+
+/* Relink a new node in place of an old node in the list.  */
+static inline void
+relink_imm_use (ssa_use_operand_t *node, ssa_use_operand_t *old)
+{
+  /* The node one had better be in the same list.  */
+  gcc_checking_assert (*(old->use) == *(node->use));
+  node->prev = old->prev;
+  node->next = old->next;
+  if (old->prev)
+    {
+      old->prev->next = node;
+      old->next->prev = node;
+      /* Remove the old node from the list.  */
+      old->prev = NULL;
+    }
+}
+
+/* Relink ssa_imm_use node LINKNODE into the chain for OLD, with use occurring
+   in STMT.  */
+static inline void
+relink_imm_use_stmt (ssa_use_operand_t *linknode, ssa_use_operand_t *old,
+		     gimple stmt)
+{
+  if (stmt)
+    relink_imm_use (linknode, old);
+  else
+    link_imm_use (linknode, NULL);
+  linknode->loc.stmt = stmt;
+}
+
+
+/* Return true is IMM has reached the end of the immediate use list.  */
+static inline bool
+end_readonly_imm_use_p (const imm_use_iterator *imm)
+{
+  return (imm->imm_use == imm->end_p);
+}
+
+/* Initialize iterator IMM to process the list for VAR.  */
+static inline use_operand_p
+first_readonly_imm_use (imm_use_iterator *imm, tree var)
+{
+  imm->end_p = &(SSA_NAME_IMM_USE_NODE (var));
+  imm->imm_use = imm->end_p->next;
+#ifdef ENABLE_CHECKING
+  imm->iter_node.next = imm->imm_use->next;
+#endif
+  if (end_readonly_imm_use_p (imm))
+    return NULL_USE_OPERAND_P;
+  return imm->imm_use;
+}
+
+/* Bump IMM to the next use in the list.  */
+static inline use_operand_p
+next_readonly_imm_use (imm_use_iterator *imm)
+{
+  use_operand_p old = imm->imm_use;
+
+#ifdef ENABLE_CHECKING
+  /* If this assertion fails, it indicates the 'next' pointer has changed
+     since the last bump.  This indicates that the list is being modified
+     via stmt changes, or SET_USE, or somesuch thing, and you need to be
+     using the SAFE version of the iterator.  */
+  gcc_assert (imm->iter_node.next == old->next);
+  imm->iter_node.next = old->next->next;
+#endif
+
+  imm->imm_use = old->next;
+  if (end_readonly_imm_use_p (imm))
+    return NULL_USE_OPERAND_P;
+  return imm->imm_use;
+}
+
+/* tree-cfg.c */
+extern bool has_zero_uses_1 (const ssa_use_operand_t *head);
+extern bool single_imm_use_1 (const ssa_use_operand_t *head,
+			      use_operand_p *use_p, gimple *stmt);
+
+/* Return true if VAR has no nondebug uses.  */
+static inline bool
+has_zero_uses (const_tree var)
+{
+  const ssa_use_operand_t *const ptr = &(SSA_NAME_IMM_USE_NODE (var));
+
+  /* A single use_operand means there is no items in the list.  */
+  if (ptr == ptr->next)
+    return true;
+
+  /* If there are debug stmts, we have to look at each use and see
+     whether there are any nondebug uses.  */
+  if (!MAY_HAVE_DEBUG_STMTS)
+    return false;
+
+  return has_zero_uses_1 (ptr);
+}
+
+/* Return true if VAR has a single nondebug use.  */
+static inline bool
+has_single_use (const_tree var)
+{
+  const ssa_use_operand_t *const ptr = &(SSA_NAME_IMM_USE_NODE (var));
+
+  /* If there aren't any uses whatsoever, we're done.  */
+  if (ptr == ptr->next)
+    return false;
+
+  /* If there's a single use, check that it's not a debug stmt.  */
+  if (ptr == ptr->next->next)
+    return !is_gimple_debug (USE_STMT (ptr->next));
+
+  /* If there are debug stmts, we have to look at each of them.  */
+  if (!MAY_HAVE_DEBUG_STMTS)
+    return false;
+
+  return single_imm_use_1 (ptr, NULL, NULL);
+}
+
+
+/* If VAR has only a single immediate nondebug use, return true, and
+   set USE_P and STMT to the use pointer and stmt of occurrence.  */
+static inline bool
+single_imm_use (const_tree var, use_operand_p *use_p, gimple *stmt)
+{
+  const ssa_use_operand_t *const ptr = &(SSA_NAME_IMM_USE_NODE (var));
+
+  /* If there aren't any uses whatsoever, we're done.  */
+  if (ptr == ptr->next)
+    {
+    return_false:
+      *use_p = NULL_USE_OPERAND_P;
+      *stmt = NULL;
+      return false;
+    }
+
+  /* If there's a single use, check that it's not a debug stmt.  */
+  if (ptr == ptr->next->next)
+    {
+      if (!is_gimple_debug (USE_STMT (ptr->next)))
+	{
+	  *use_p = ptr->next;
+	  *stmt = ptr->next->loc.stmt;
+	  return true;
+	}
+      else
+	goto return_false;
+    }
+
+  /* If there are debug stmts, we have to look at each of them.  */
+  if (!MAY_HAVE_DEBUG_STMTS)
+    goto return_false;
+
+  return single_imm_use_1 (ptr, use_p, stmt);
+}
+
+/* Return the number of nondebug immediate uses of VAR.  */
+static inline unsigned int
+num_imm_uses (const_tree var)
+{
+  const ssa_use_operand_t *const start = &(SSA_NAME_IMM_USE_NODE (var));
+  const ssa_use_operand_t *ptr;
+  unsigned int num = 0;
+
+  if (!MAY_HAVE_DEBUG_STMTS)
+    for (ptr = start->next; ptr != start; ptr = ptr->next)
+      num++;
+  else
+    for (ptr = start->next; ptr != start; ptr = ptr->next)
+      if (!is_gimple_debug (USE_STMT (ptr)))
+	num++;
+
+  return num;
+}
+
+/* Return the tree pointed-to by USE.  */
+static inline tree
+get_use_from_ptr (use_operand_p use)
+{
+  return *(use->use);
+}
+
+/* Return the tree pointed-to by DEF.  */
+static inline tree
+get_def_from_ptr (def_operand_p def)
+{
+  return *def;
+}
+
+/* Return a use_operand_p pointer for argument I of PHI node GS.  */
+
+static inline use_operand_p
+gimple_phi_arg_imm_use_ptr (gimple gs, int i)
+{
+  return &gimple_phi_arg (gs, i)->imm_use;
+}
+
+/* Return the tree operand for argument I of PHI node GS.  */
+
+static inline tree
+gimple_phi_arg_def (gimple gs, size_t index)
+{
+  struct phi_arg_d *pd = gimple_phi_arg (gs, index);
+  return get_use_from_ptr (&pd->imm_use);
+}
+
+/* Return a pointer to the tree operand for argument I of PHI node GS.  */
+
+static inline tree *
+gimple_phi_arg_def_ptr (gimple gs, size_t index)
+{
+  return &gimple_phi_arg (gs, index)->def;
+}
+
+/* Return the edge associated with argument I of phi node GS.  */
+
+static inline edge
+gimple_phi_arg_edge (gimple gs, size_t i)
+{
+  return EDGE_PRED (gimple_bb (gs), i);
+}
+
+/* Return the source location of gimple argument I of phi node GS.  */
+
+static inline source_location
+gimple_phi_arg_location (gimple gs, size_t i)
+{
+  return gimple_phi_arg (gs, i)->locus;
+}
+
+/* Return the source location of the argument on edge E of phi node GS.  */
+
+static inline source_location
+gimple_phi_arg_location_from_edge (gimple gs, edge e)
+{
+  return gimple_phi_arg (gs, e->dest_idx)->locus;
+}
+
+/* Set the source location of gimple argument I of phi node GS to LOC.  */
+
+static inline void
+gimple_phi_arg_set_location (gimple gs, size_t i, source_location loc)
+{
+  gimple_phi_arg (gs, i)->locus = loc;
+}
+
+/* Return TRUE if argument I of phi node GS has a location record.  */
+
+static inline bool
+gimple_phi_arg_has_location (gimple gs, size_t i)
+{
+  return gimple_phi_arg_location (gs, i) != UNKNOWN_LOCATION;
+}
+
+
+/* Return the PHI nodes for basic block BB, or NULL if there are no
+   PHI nodes.  */
+static inline gimple_seq
+phi_nodes (const_basic_block bb)
+{
+  gcc_checking_assert (!(bb->flags & BB_RTL));
+  return bb->il.gimple.phi_nodes;
+}
+
+static inline gimple_seq *
+phi_nodes_ptr (basic_block bb)
+{
+  gcc_checking_assert (!(bb->flags & BB_RTL));
+  return &bb->il.gimple.phi_nodes;
+}
+
+/* Set PHI nodes of a basic block BB to SEQ.  */
+
+static inline void
+set_phi_nodes (basic_block bb, gimple_seq seq)
+{
+  gimple_stmt_iterator i;
+
+  gcc_checking_assert (!(bb->flags & BB_RTL));
+  bb->il.gimple.phi_nodes = seq;
+  if (seq)
+    for (i = gsi_start (seq); !gsi_end_p (i); gsi_next (&i))
+      gimple_set_bb (gsi_stmt (i), bb);
+}
+
+/* Return the phi argument which contains the specified use.  */
+
+static inline int
+phi_arg_index_from_use (use_operand_p use)
+{
+  struct phi_arg_d *element, *root;
+  size_t index;
+  gimple phi;
+
+  /* Since the use is the first thing in a PHI argument element, we can
+     calculate its index based on casting it to an argument, and performing
+     pointer arithmetic.  */
+
+  phi = USE_STMT (use);
+
+  element = (struct phi_arg_d *)use;
+  root = gimple_phi_arg (phi, 0);
+  index = element - root;
+
+  /* Make sure the calculation doesn't have any leftover bytes.  If it does,
+     then imm_use is likely not the first element in phi_arg_d.  */
+  gcc_checking_assert ((((char *)element - (char *)root)
+			% sizeof (struct phi_arg_d)) == 0
+		       && index < gimple_phi_capacity (phi));
+
+ return index;
+}
+
+/* Return true if T (assumed to be a DECL) is a global variable.
+   A variable is considered global if its storage is not automatic.  */
+
+static inline bool
+is_global_var (const_tree t)
+{
+  return (TREE_STATIC (t) || DECL_EXTERNAL (t));
+}
+
+
+/* Return true if VAR may be aliased.  A variable is considered as
+   maybe aliased if it has its address taken by the local TU
+   or possibly by another TU and might be modified through a pointer.  */
+
+static inline bool
+may_be_aliased (const_tree var)
+{
+  return (TREE_CODE (var) != CONST_DECL
+	  && !((TREE_STATIC (var) || TREE_PUBLIC (var) || DECL_EXTERNAL (var))
+	       && TREE_READONLY (var)
+	       && !TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (var)))
+	  && (TREE_PUBLIC (var)
+	      || DECL_EXTERNAL (var)
+	      || TREE_ADDRESSABLE (var)));
+}
+
+
+/* PHI nodes should contain only ssa_names and invariants.  A test
+   for ssa_name is definitely simpler; don't let invalid contents
+   slip in in the meantime.  */
+
+static inline bool
+phi_ssa_name_p (const_tree t)
+{
+  if (TREE_CODE (t) == SSA_NAME)
+    return true;
+  gcc_checking_assert (is_gimple_min_invariant (t));
+  return false;
+}
+
+
+/* Returns the loop of the statement STMT.  */
+
+static inline struct loop *
+loop_containing_stmt (gimple stmt)
+{
+  basic_block bb = gimple_bb (stmt);
+  if (!bb)
+    return NULL;
+
+  return bb->loop_father;
+}
+
+
+/*  -----------------------------------------------------------------------  */
+
+/* The following set of routines are used to iterator over various type of
+   SSA operands.  */
+
+/* Return true if PTR is finished iterating.  */
+static inline bool
+op_iter_done (const ssa_op_iter *ptr)
+{
+  return ptr->done;
+}
+
+/* Get the next iterator use value for PTR.  */
+static inline use_operand_p
+op_iter_next_use (ssa_op_iter *ptr)
+{
+  use_operand_p use_p;
+  gcc_checking_assert (ptr->iter_type == ssa_op_iter_use);
+  if (ptr->uses)
+    {
+      use_p = USE_OP_PTR (ptr->uses);
+      ptr->uses = ptr->uses->next;
+      return use_p;
+    }
+  if (ptr->i < ptr->numops)
+    {
+      return PHI_ARG_DEF_PTR (ptr->stmt, (ptr->i)++);
+    }
+  ptr->done = true;
+  return NULL_USE_OPERAND_P;
+}
+
+/* Get the next iterator def value for PTR.  */
+static inline def_operand_p
+op_iter_next_def (ssa_op_iter *ptr)
+{
+  gcc_checking_assert (ptr->iter_type == ssa_op_iter_def);
+  if (ptr->flags & SSA_OP_VDEF)
+    {
+      tree *p;
+      ptr->flags &= ~SSA_OP_VDEF;
+      p = gimple_vdef_ptr (ptr->stmt);
+      if (p && *p)
+	return p;
+    }
+  if (ptr->flags & SSA_OP_DEF)
+    {
+      while (ptr->i < ptr->numops)
+	{
+	  tree *val = gimple_op_ptr (ptr->stmt, ptr->i);
+	  ptr->i++;
+	  if (*val)
+	    {
+	      if (TREE_CODE (*val) == TREE_LIST)
+		val = &TREE_VALUE (*val);
+	      if (TREE_CODE (*val) == SSA_NAME
+		  || is_gimple_reg (*val))
+		return val;
+	    }
+	}
+      ptr->flags &= ~SSA_OP_DEF;
+    }
+
+  ptr->done = true;
+  return NULL_DEF_OPERAND_P;
+}
+
+/* Get the next iterator tree value for PTR.  */
+static inline tree
+op_iter_next_tree (ssa_op_iter *ptr)
+{
+  tree val;
+  gcc_checking_assert (ptr->iter_type == ssa_op_iter_tree);
+  if (ptr->uses)
+    {
+      val = USE_OP (ptr->uses);
+      ptr->uses = ptr->uses->next;
+      return val;
+    }
+  if (ptr->flags & SSA_OP_VDEF)
+    {
+      ptr->flags &= ~SSA_OP_VDEF;
+      if ((val = gimple_vdef (ptr->stmt)))
+	return val;
+    }
+  if (ptr->flags & SSA_OP_DEF)
+    {
+      while (ptr->i < ptr->numops)
+	{
+	  val = gimple_op (ptr->stmt, ptr->i);
+	  ptr->i++;
+	  if (val)
+	    {
+	      if (TREE_CODE (val) == TREE_LIST)
+		val = TREE_VALUE (val);
+	      if (TREE_CODE (val) == SSA_NAME
+		  || is_gimple_reg (val))
+		return val;
+	    }
+	}
+      ptr->flags &= ~SSA_OP_DEF;
+    }
+
+  ptr->done = true;
+  return NULL_TREE;
+}
+
+
+/* This functions clears the iterator PTR, and marks it done.  This is normally
+   used to prevent warnings in the compile about might be uninitialized
+   components.  */
+
+static inline void
+clear_and_done_ssa_iter (ssa_op_iter *ptr)
+{
+  ptr->i = 0;
+  ptr->numops = 0;
+  ptr->uses = NULL;
+  ptr->iter_type = ssa_op_iter_none;
+  ptr->stmt = NULL;
+  ptr->done = true;
+  ptr->flags = 0;
+}
+
+/* Initialize the iterator PTR to the virtual defs in STMT.  */
+static inline void
+op_iter_init (ssa_op_iter *ptr, gimple stmt, int flags)
+{
+  /* PHI nodes require a different iterator initialization path.  We
+     do not support iterating over virtual defs or uses without
+     iterating over defs or uses at the same time.  */
+  gcc_checking_assert (gimple_code (stmt) != GIMPLE_PHI
+		       && (!(flags & SSA_OP_VDEF) || (flags & SSA_OP_DEF))
+		       && (!(flags & SSA_OP_VUSE) || (flags & SSA_OP_USE)));
+  ptr->numops = 0;
+  if (flags & (SSA_OP_DEF | SSA_OP_VDEF))
+    {
+      switch (gimple_code (stmt))
+	{
+	  case GIMPLE_ASSIGN:
+	  case GIMPLE_CALL:
+	    ptr->numops = 1;
+	    break;
+	  case GIMPLE_ASM:
+	    ptr->numops = gimple_asm_noutputs (stmt);
+	    break;
+	  default:
+	    ptr->numops = 0;
+	    flags &= ~(SSA_OP_DEF | SSA_OP_VDEF);
+	    break;
+	}
+    }
+  ptr->uses = (flags & (SSA_OP_USE|SSA_OP_VUSE)) ? gimple_use_ops (stmt) : NULL;
+  if (!(flags & SSA_OP_VUSE)
+      && ptr->uses
+      && gimple_vuse (stmt) != NULL_TREE)
+    ptr->uses = ptr->uses->next;
+  ptr->done = false;
+  ptr->i = 0;
+
+  ptr->stmt = stmt;
+  ptr->flags = flags;
+}
+
+/* Initialize iterator PTR to the use operands in STMT based on FLAGS. Return
+   the first use.  */
+static inline use_operand_p
+op_iter_init_use (ssa_op_iter *ptr, gimple stmt, int flags)
+{
+  gcc_checking_assert ((flags & SSA_OP_ALL_DEFS) == 0
+		       && (flags & SSA_OP_USE));
+  op_iter_init (ptr, stmt, flags);
+  ptr->iter_type = ssa_op_iter_use;
+  return op_iter_next_use (ptr);
+}
+
+/* Initialize iterator PTR to the def operands in STMT based on FLAGS. Return
+   the first def.  */
+static inline def_operand_p
+op_iter_init_def (ssa_op_iter *ptr, gimple stmt, int flags)
+{
+  gcc_checking_assert ((flags & SSA_OP_ALL_USES) == 0
+		       && (flags & SSA_OP_DEF));
+  op_iter_init (ptr, stmt, flags);
+  ptr->iter_type = ssa_op_iter_def;
+  return op_iter_next_def (ptr);
+}
+
+/* Initialize iterator PTR to the operands in STMT based on FLAGS. Return
+   the first operand as a tree.  */
+static inline tree
+op_iter_init_tree (ssa_op_iter *ptr, gimple stmt, int flags)
+{
+  op_iter_init (ptr, stmt, flags);
+  ptr->iter_type = ssa_op_iter_tree;
+  return op_iter_next_tree (ptr);
+}
+
+
+/* If there is a single operand in STMT matching FLAGS, return it.  Otherwise
+   return NULL.  */
+static inline tree
+single_ssa_tree_operand (gimple stmt, int flags)
+{
+  tree var;
+  ssa_op_iter iter;
+
+  var = op_iter_init_tree (&iter, stmt, flags);
+  if (op_iter_done (&iter))
+    return NULL_TREE;
+  op_iter_next_tree (&iter);
+  if (op_iter_done (&iter))
+    return var;
+  return NULL_TREE;
+}
+
+
+/* If there is a single operand in STMT matching FLAGS, return it.  Otherwise
+   return NULL.  */
+static inline use_operand_p
+single_ssa_use_operand (gimple stmt, int flags)
+{
+  use_operand_p var;
+  ssa_op_iter iter;
+
+  var = op_iter_init_use (&iter, stmt, flags);
+  if (op_iter_done (&iter))
+    return NULL_USE_OPERAND_P;
+  op_iter_next_use (&iter);
+  if (op_iter_done (&iter))
+    return var;
+  return NULL_USE_OPERAND_P;
+}
+
+
+
+/* If there is a single operand in STMT matching FLAGS, return it.  Otherwise
+   return NULL.  */
+static inline def_operand_p
+single_ssa_def_operand (gimple stmt, int flags)
+{
+  def_operand_p var;
+  ssa_op_iter iter;
+
+  var = op_iter_init_def (&iter, stmt, flags);
+  if (op_iter_done (&iter))
+    return NULL_DEF_OPERAND_P;
+  op_iter_next_def (&iter);
+  if (op_iter_done (&iter))
+    return var;
+  return NULL_DEF_OPERAND_P;
+}
+
+
+/* Return true if there are zero operands in STMT matching the type
+   given in FLAGS.  */
+static inline bool
+zero_ssa_operands (gimple stmt, int flags)
+{
+  ssa_op_iter iter;
+
+  op_iter_init_tree (&iter, stmt, flags);
+  return op_iter_done (&iter);
+}
+
+
+/* Return the number of operands matching FLAGS in STMT.  */
+static inline int
+num_ssa_operands (gimple stmt, int flags)
+{
+  ssa_op_iter iter;
+  tree t;
+  int num = 0;
+
+  gcc_checking_assert (gimple_code (stmt) != GIMPLE_PHI);
+  FOR_EACH_SSA_TREE_OPERAND (t, stmt, iter, flags)
+    num++;
+  return num;
+}
+
+static inline use_operand_p
+op_iter_init_phiuse (ssa_op_iter *ptr, gimple phi, int flags);
+
+/* Delink all immediate_use information for STMT.  */
+static inline void
+delink_stmt_imm_use (gimple stmt)
+{
+   ssa_op_iter iter;
+   use_operand_p use_p;
+
+   if (ssa_operands_active (cfun))
+     FOR_EACH_PHI_OR_STMT_USE (use_p, stmt, iter, SSA_OP_ALL_USES)
+       delink_imm_use (use_p);
+}
+
+
+/* If there is a single DEF in the PHI node which matches FLAG, return it.
+   Otherwise return NULL_DEF_OPERAND_P.  */
+static inline tree
+single_phi_def (gimple stmt, int flags)
+{
+  tree def = PHI_RESULT (stmt);
+  if ((flags & SSA_OP_DEF) && is_gimple_reg (def))
+    return def;
+  if ((flags & SSA_OP_VIRTUAL_DEFS) && !is_gimple_reg (def))
+    return def;
+  return NULL_TREE;
+}
+
+/* Initialize the iterator PTR for uses matching FLAGS in PHI.  FLAGS should
+   be either SSA_OP_USES or SSA_OP_VIRTUAL_USES.  */
+static inline use_operand_p
+op_iter_init_phiuse (ssa_op_iter *ptr, gimple phi, int flags)
+{
+  tree phi_def = gimple_phi_result (phi);
+  int comp;
+
+  clear_and_done_ssa_iter (ptr);
+  ptr->done = false;
+
+  gcc_checking_assert ((flags & (SSA_OP_USE | SSA_OP_VIRTUAL_USES)) != 0);
+
+  comp = (is_gimple_reg (phi_def) ? SSA_OP_USE : SSA_OP_VIRTUAL_USES);
+
+  /* If the PHI node doesn't the operand type we care about, we're done.  */
+  if ((flags & comp) == 0)
+    {
+      ptr->done = true;
+      return NULL_USE_OPERAND_P;
+    }
+
+  ptr->stmt = phi;
+  ptr->numops = gimple_phi_num_args (phi);
+  ptr->iter_type = ssa_op_iter_use;
+  ptr->flags = flags;
+  return op_iter_next_use (ptr);
+}
+
+
+/* Start an iterator for a PHI definition.  */
+
+static inline def_operand_p
+op_iter_init_phidef (ssa_op_iter *ptr, gimple phi, int flags)
+{
+  tree phi_def = PHI_RESULT (phi);
+  int comp;
+
+  clear_and_done_ssa_iter (ptr);
+  ptr->done = false;
+
+  gcc_checking_assert ((flags & (SSA_OP_DEF | SSA_OP_VIRTUAL_DEFS)) != 0);
+
+  comp = (is_gimple_reg (phi_def) ? SSA_OP_DEF : SSA_OP_VIRTUAL_DEFS);
+
+  /* If the PHI node doesn't have the operand type we care about,
+     we're done.  */
+  if ((flags & comp) == 0)
+    {
+      ptr->done = true;
+      return NULL_DEF_OPERAND_P;
+    }
+
+  ptr->iter_type = ssa_op_iter_def;
+  /* The first call to op_iter_next_def will terminate the iterator since
+     all the fields are NULL.  Simply return the result here as the first and
+     therefore only result.  */
+  return PHI_RESULT_PTR (phi);
+}
+
+/* Return true is IMM has reached the end of the immediate use stmt list.  */
+
+static inline bool
+end_imm_use_stmt_p (const imm_use_iterator *imm)
+{
+  return (imm->imm_use == imm->end_p);
+}
+
+/* Finished the traverse of an immediate use stmt list IMM by removing the
+   placeholder node from the list.  */
+
+static inline void
+end_imm_use_stmt_traverse (imm_use_iterator *imm)
+{
+  delink_imm_use (&(imm->iter_node));
+}
+
+/* Immediate use traversal of uses within a stmt require that all the
+   uses on a stmt be sequentially listed.  This routine is used to build up
+   this sequential list by adding USE_P to the end of the current list
+   currently delimited by HEAD and LAST_P.  The new LAST_P value is
+   returned.  */
+
+static inline use_operand_p
+move_use_after_head (use_operand_p use_p, use_operand_p head,
+		      use_operand_p last_p)
+{
+  gcc_checking_assert (USE_FROM_PTR (use_p) == USE_FROM_PTR (head));
+  /* Skip head when we find it.  */
+  if (use_p != head)
+    {
+      /* If use_p is already linked in after last_p, continue.  */
+      if (last_p->next == use_p)
+	last_p = use_p;
+      else
+	{
+	  /* Delink from current location, and link in at last_p.  */
+	  delink_imm_use (use_p);
+	  link_imm_use_to_list (use_p, last_p);
+	  last_p = use_p;
+	}
+    }
+  return last_p;
+}
+
+
+/* This routine will relink all uses with the same stmt as HEAD into the list
+   immediately following HEAD for iterator IMM.  */
+
+static inline void
+link_use_stmts_after (use_operand_p head, imm_use_iterator *imm)
+{
+  use_operand_p use_p;
+  use_operand_p last_p = head;
+  gimple head_stmt = USE_STMT (head);
+  tree use = USE_FROM_PTR (head);
+  ssa_op_iter op_iter;
+  int flag;
+
+  /* Only look at virtual or real uses, depending on the type of HEAD.  */
+  flag = (is_gimple_reg (use) ? SSA_OP_USE : SSA_OP_VIRTUAL_USES);
+
+  if (gimple_code (head_stmt) == GIMPLE_PHI)
+    {
+      FOR_EACH_PHI_ARG (use_p, head_stmt, op_iter, flag)
+	if (USE_FROM_PTR (use_p) == use)
+	  last_p = move_use_after_head (use_p, head, last_p);
+    }
+  else
+    {
+      if (flag == SSA_OP_USE)
+	{
+	  FOR_EACH_SSA_USE_OPERAND (use_p, head_stmt, op_iter, flag)
+	    if (USE_FROM_PTR (use_p) == use)
+	      last_p = move_use_after_head (use_p, head, last_p);
+	}
+      else if ((use_p = gimple_vuse_op (head_stmt)) != NULL_USE_OPERAND_P)
+	{
+	  if (USE_FROM_PTR (use_p) == use)
+	    last_p = move_use_after_head (use_p, head, last_p);
+	}
+    }
+  /* Link iter node in after last_p.  */
+  if (imm->iter_node.prev != NULL)
+    delink_imm_use (&imm->iter_node);
+  link_imm_use_to_list (&(imm->iter_node), last_p);
+}
+
+/* Initialize IMM to traverse over uses of VAR.  Return the first statement.  */
+static inline gimple
+first_imm_use_stmt (imm_use_iterator *imm, tree var)
+{
+  imm->end_p = &(SSA_NAME_IMM_USE_NODE (var));
+  imm->imm_use = imm->end_p->next;
+  imm->next_imm_name = NULL_USE_OPERAND_P;
+
+  /* iter_node is used as a marker within the immediate use list to indicate
+     where the end of the current stmt's uses are.  Initialize it to NULL
+     stmt and use, which indicates a marker node.  */
+  imm->iter_node.prev = NULL_USE_OPERAND_P;
+  imm->iter_node.next = NULL_USE_OPERAND_P;
+  imm->iter_node.loc.stmt = NULL;
+  imm->iter_node.use = NULL;
+
+  if (end_imm_use_stmt_p (imm))
+    return NULL;
+
+  link_use_stmts_after (imm->imm_use, imm);
+
+  return USE_STMT (imm->imm_use);
+}
+
+/* Bump IMM to the next stmt which has a use of var.  */
+
+static inline gimple
+next_imm_use_stmt (imm_use_iterator *imm)
+{
+  imm->imm_use = imm->iter_node.next;
+  if (end_imm_use_stmt_p (imm))
+    {
+      if (imm->iter_node.prev != NULL)
+	delink_imm_use (&imm->iter_node);
+      return NULL;
+    }
+
+  link_use_stmts_after (imm->imm_use, imm);
+  return USE_STMT (imm->imm_use);
+}
+
+/* This routine will return the first use on the stmt IMM currently refers
+   to.  */
+
+static inline use_operand_p
+first_imm_use_on_stmt (imm_use_iterator *imm)
+{
+  imm->next_imm_name = imm->imm_use->next;
+  return imm->imm_use;
+}
+
+/*  Return TRUE if the last use on the stmt IMM refers to has been visited.  */
+
+static inline bool
+end_imm_use_on_stmt_p (const imm_use_iterator *imm)
+{
+  return (imm->imm_use == &(imm->iter_node));
+}
+
+/* Bump to the next use on the stmt IMM refers to, return NULL if done.  */
+
+static inline use_operand_p
+next_imm_use_on_stmt (imm_use_iterator *imm)
+{
+  imm->imm_use = imm->next_imm_name;
+  if (end_imm_use_on_stmt_p (imm))
+    return NULL_USE_OPERAND_P;
+  else
+    {
+      imm->next_imm_name = imm->imm_use->next;
+      return imm->imm_use;
+    }
+}
+
+/* Return true if VAR cannot be modified by the program.  */
+
+static inline bool
+unmodifiable_var_p (const_tree var)
+{
+  if (TREE_CODE (var) == SSA_NAME)
+    var = SSA_NAME_VAR (var);
+
+  return TREE_READONLY (var) && (TREE_STATIC (var) || DECL_EXTERNAL (var));
+}
+
+/* Return true if REF, a handled component reference, has an ARRAY_REF
+   somewhere in it.  */
+
+static inline bool
+ref_contains_array_ref (const_tree ref)
+{
+  gcc_checking_assert (handled_component_p (ref));
+
+  do {
+    if (TREE_CODE (ref) == ARRAY_REF)
+      return true;
+    ref = TREE_OPERAND (ref, 0);
+  } while (handled_component_p (ref));
+
+  return false;
+}
+
+/* Return true if REF has an VIEW_CONVERT_EXPR somewhere in it.  */
+
+static inline bool
+contains_view_convert_expr_p (const_tree ref)
+{
+  while (handled_component_p (ref))
+    {
+      if (TREE_CODE (ref) == VIEW_CONVERT_EXPR)
+	return true;
+      ref = TREE_OPERAND (ref, 0);
+    }
+
+  return false;
+}
+
+/* Return true, if the two ranges [POS1, SIZE1] and [POS2, SIZE2]
+   overlap.  SIZE1 and/or SIZE2 can be (unsigned)-1 in which case the
+   range is open-ended.  Otherwise return false.  */
+
+static inline bool
+ranges_overlap_p (unsigned HOST_WIDE_INT pos1,
+		  unsigned HOST_WIDE_INT size1,
+		  unsigned HOST_WIDE_INT pos2,
+		  unsigned HOST_WIDE_INT size2)
+{
+  if (pos1 >= pos2
+      && (size2 == (unsigned HOST_WIDE_INT)-1
+	  || pos1 < (pos2 + size2)))
+    return true;
+  if (pos2 >= pos1
+      && (size1 == (unsigned HOST_WIDE_INT)-1
+	  || pos2 < (pos1 + size1)))
+    return true;
+
+  return false;
+}
+
+/* Accessor to tree-ssa-operands.c caches.  */
+static inline struct ssa_operands *
+gimple_ssa_operands (const struct function *fun)
+{
+  return &fun->gimple_df->ssa_operands;
+}
+
+/* Given an edge_var_map V, return the PHI arg definition.  */
+
+static inline tree
+redirect_edge_var_map_def (edge_var_map *v)
+{
+  return v->def;
+}
+
+/* Given an edge_var_map V, return the PHI result.  */
+
+static inline tree
+redirect_edge_var_map_result (edge_var_map *v)
+{
+  return v->result;
+}
+
+/* Given an edge_var_map V, return the PHI arg location.  */
+
+static inline source_location
+redirect_edge_var_map_location (edge_var_map *v)
+{
+  return v->locus;
+}
+
+
+/* Return an SSA_NAME node for variable VAR defined in statement STMT
+   in function cfun.  */
+
+static inline tree
+make_ssa_name (tree var, gimple stmt)
+{
+  return make_ssa_name_fn (cfun, var, stmt);
+}
+
+/* Return an SSA_NAME node using the template SSA name NAME defined in
+   statement STMT in function cfun.  */
+
+static inline tree
+copy_ssa_name (tree var, gimple stmt)
+{
+  return copy_ssa_name_fn (cfun, var, stmt);
+}
+
+/*  Creates a duplicate of a SSA name NAME tobe defined by statement STMT
+    in function cfun.  */
+
+static inline tree
+duplicate_ssa_name (tree var, gimple stmt)
+{
+  return duplicate_ssa_name_fn (cfun, var, stmt);
+}
+
+/* Return an anonymous SSA_NAME node for type TYPE defined in statement STMT
+   in function cfun.  Arrange so that it uses NAME in dumps.  */
+
+static inline tree
+make_temp_ssa_name (tree type, gimple stmt, const char *name)
+{
+  tree ssa_name;
+  gcc_checking_assert (TYPE_P (type));
+  ssa_name = make_ssa_name_fn (cfun, type, stmt);
+  SET_SSA_NAME_VAR_OR_IDENTIFIER (ssa_name, get_identifier (name));
+  return ssa_name;
+}
+
+/* Returns the base object and a constant BITS_PER_UNIT offset in *POFFSET that
+   denotes the starting address of the memory access EXP.
+   Returns NULL_TREE if the offset is not constant or any component
+   is not BITS_PER_UNIT-aligned.
+   VALUEIZE if non-NULL is used to valueize SSA names.  It should return
+   its argument or a constant if the argument is known to be constant.  */
+/* ??? This is a static inline here to avoid the overhead of the indirect calls
+   to VALUEIZE.  But is this overhead really that significant?  And should we
+   perhaps just rely on WHOPR to specialize the function?  */
+
+static inline tree
+get_addr_base_and_unit_offset_1 (tree exp, HOST_WIDE_INT *poffset,
+				 tree (*valueize) (tree))
+{
+  HOST_WIDE_INT byte_offset = 0;
+
+  /* Compute cumulative byte-offset for nested component-refs and array-refs,
+     and find the ultimate containing object.  */
+  while (1)
+    {
+      switch (TREE_CODE (exp))
+	{
+	case BIT_FIELD_REF:
+	  return NULL_TREE;
+
+	case COMPONENT_REF:
+	  {
+	    tree field = TREE_OPERAND (exp, 1);
+	    tree this_offset = component_ref_field_offset (exp);
+	    HOST_WIDE_INT hthis_offset;
+
+	    if (!this_offset
+		|| TREE_CODE (this_offset) != INTEGER_CST
+		|| (TREE_INT_CST_LOW (DECL_FIELD_BIT_OFFSET (field))
+		    % BITS_PER_UNIT))
+	      return NULL_TREE;
+
+	    hthis_offset = TREE_INT_CST_LOW (this_offset);
+	    hthis_offset += (TREE_INT_CST_LOW (DECL_FIELD_BIT_OFFSET (field))
+			     / BITS_PER_UNIT);
+	    byte_offset += hthis_offset;
+	  }
+	  break;
+
+	case ARRAY_REF:
+	case ARRAY_RANGE_REF:
+	  {
+	    tree index = TREE_OPERAND (exp, 1);
+	    tree low_bound, unit_size;
+
+	    if (valueize
+		&& TREE_CODE (index) == SSA_NAME)
+	      index = (*valueize) (index);
+
+	    /* If the resulting bit-offset is constant, track it.  */
+	    if (TREE_CODE (index) == INTEGER_CST
+		&& (low_bound = array_ref_low_bound (exp),
+		    TREE_CODE (low_bound) == INTEGER_CST)
+		&& (unit_size = array_ref_element_size (exp),
+		    TREE_CODE (unit_size) == INTEGER_CST))
+	      {
+		HOST_WIDE_INT hindex = TREE_INT_CST_LOW (index);
+
+		hindex -= TREE_INT_CST_LOW (low_bound);
+		hindex *= TREE_INT_CST_LOW (unit_size);
+		byte_offset += hindex;
+	      }
+	    else
+	      return NULL_TREE;
+	  }
+	  break;
+
+	case REALPART_EXPR:
+	  break;
+
+	case IMAGPART_EXPR:
+	  byte_offset += TREE_INT_CST_LOW (TYPE_SIZE_UNIT (TREE_TYPE (exp)));
+	  break;
+
+	case VIEW_CONVERT_EXPR:
+	  break;
+
+	case MEM_REF:
+	  {
+	    tree base = TREE_OPERAND (exp, 0);
+	    if (valueize
+		&& TREE_CODE (base) == SSA_NAME)
+	      base = (*valueize) (base);
+
+	    /* Hand back the decl for MEM[&decl, off].  */
+	    if (TREE_CODE (base) == ADDR_EXPR)
+	      {
+		if (!integer_zerop (TREE_OPERAND (exp, 1)))
+		  {
+		    double_int off = mem_ref_offset (exp);
+		    gcc_assert (off.high == -1 || off.high == 0);
+		    byte_offset += off.to_shwi ();
+		  }
+		exp = TREE_OPERAND (base, 0);
+	      }
+	    goto done;
+	  }
+
+	case TARGET_MEM_REF:
+	  {
+	    tree base = TREE_OPERAND (exp, 0);
+	    if (valueize
+		&& TREE_CODE (base) == SSA_NAME)
+	      base = (*valueize) (base);
+
+	    /* Hand back the decl for MEM[&decl, off].  */
+	    if (TREE_CODE (base) == ADDR_EXPR)
+	      {
+		if (TMR_INDEX (exp) || TMR_INDEX2 (exp))
+		  return NULL_TREE;
+		if (!integer_zerop (TMR_OFFSET (exp)))
+		  {
+		    double_int off = mem_ref_offset (exp);
+		    gcc_assert (off.high == -1 || off.high == 0);
+		    byte_offset += off.to_shwi ();
+		  }
+		exp = TREE_OPERAND (base, 0);
+	      }
+	    goto done;
+	  }
+
+	default:
+	  goto done;
+	}
+
+      exp = TREE_OPERAND (exp, 0);
+    }
+done:
+
+  *poffset = byte_offset;
+  return exp;
+}
+
+#endif /* _TREE_FLOW_INLINE_H  */