tree-ssa-operands.h (create_ssa_artificial_load_stmt): Rename from create_ssa_artficial_load_stmt.

	* tree-ssa-operands.h (create_ssa_artificial_load_stmt):
	Rename from create_ssa_artficial_load_stmt.  Update all users.
	* tree-into-ssa.c (register_new_def): Make static.
	* tree.c (is_global_var): Handle SSA_NAMEs.
	* tree.h (SSA_NAME_IS_DEFAULT_DEF): Define.  Update all users
	that used to call gimple_default_def.
	* tree-ssa-operands.c (push_stmt_changes): New.
	(pop_stmt_changes): New.  Update every pass that modifies
	statements to bracket modifications with
	push_stmt_changes/pop_stmt_changes.
	(discard_stmt_changes): New.
	* tree-ssa-dom.c (stmts_to_rescan): Change to stack of
	'tree *' instead of 'tree'.  Update all users.
	* tree-flow-inline.h (zero_imm_uses_p): New.
	(symbol_mem_tag): New.  Update every function that used
	to access the annotation directly.
	(set_symbol_mem_tag): Likewise.
	* tree-dfa.c (dump_variable): Always show the escape mask.
	(mark_symbols_for_renaming): Rename from
	mark_new_vars_to_rename.  Update all users.
	Only mark to rename naked symbols in real and virtual
	operands.

From-SVN: r119746

1 files changed, 37 insertions, 1 deletions

diff --git a/gcc/tree-flow-inline.h b/gcc/tree-flow-inline.h
index bc4c394..49be48e 100644
--- a/gcc/tree-flow-inline.h
+++ b/gcc/tree-flow-inline.h
@@ -587,7 +587,14 @@ num_imm_uses (tree var)
   return num;
 }
 
-
+/* Return true if VAR has no immediate uses.  */
+static inline bool
+zero_imm_uses_p (tree var)
+{
+  ssa_use_operand_t *ptr = &(SSA_NAME_IMM_USE_NODE (var));
+  return (ptr == ptr->next);
+}
+ 
 /* Return the tree pointer to by USE.  */ 
 static inline tree
 get_use_from_ptr (use_operand_p use)
@@ -1712,6 +1719,35 @@ overlap_subvar (unsigned HOST_WIDE_INT offset, unsigned HOST_WIDE_INT size,
 
 }
 
+/* Return the memory tag associated with symbol SYM.  */
+
+static inline tree
+symbol_mem_tag (tree sym)
+{
+  tree tag = get_var_ann (sym)->symbol_mem_tag;
+
+#if defined ENABLE_CHECKING
+  if (tag)
+    gcc_assert (TREE_CODE (tag) == SYMBOL_MEMORY_TAG);
+#endif
+
+  return tag;
+}
+
+
+/* Set the memory tag associated with symbol SYM.  */
+
+static inline void
+set_symbol_mem_tag (tree sym, tree tag)
+{
+#if defined ENABLE_CHECKING
+  if (tag)
+    gcc_assert (TREE_CODE (tag) == SYMBOL_MEMORY_TAG);
+#endif
+
+  get_var_ann (sym)->symbol_mem_tag = tag;
+}
+
 /* Get the value handle of EXPR.  This is the only correct way to get
    the value handle for a "thing".  If EXPR does not have a value
    handle associated, it returns NULL_TREE.