Initial checkin of GCC 4.9.0 from trunk (r208799).

Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba

1 files changed, 103 insertions, 0 deletions

diff --git a/gcc-4.9/gcc/gimplify.h b/gcc-4.9/gcc/gimplify.h
new file mode 100644
index 000000000..6bc0057c3
--- /dev/null
+++ b/gcc-4.9/gcc/gimplify.h
@@ -0,0 +1,103 @@
+/* Header file for gimplification.
+   Copyright (C) 2013-2014 Free Software Foundation, Inc.
+
+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 GCC_GIMPLIFY_H
+#define GCC_GIMPLIFY_H
+
+/* Validation of GIMPLE expressions.  Note that these predicates only check
+   the basic form of the expression, they don't recurse to make sure that
+   underlying nodes are also of the right form.  */
+typedef bool (*gimple_predicate)(tree);
+
+/* FIXME we should deduce this from the predicate.  */
+enum fallback {
+  fb_none = 0,		/* Do not generate a temporary.  */
+
+  fb_rvalue = 1,	/* Generate an rvalue to hold the result of a
+			   gimplified expression.  */
+
+  fb_lvalue = 2,	/* Generate an lvalue to hold the result of a
+			   gimplified expression.  */
+
+  fb_mayfail = 4,	/* Gimplification may fail.  Error issued
+			   afterwards.  */
+  fb_either= fb_rvalue | fb_lvalue
+};
+
+typedef int fallback_t;
+
+enum gimplify_status {
+  GS_ERROR	= -2,	/* Something Bad Seen.  */
+  GS_UNHANDLED	= -1,	/* A langhook result for "I dunno".  */
+  GS_OK		= 0,	/* We did something, maybe more to do.  */
+  GS_ALL_DONE	= 1	/* The expression is fully gimplified.  */
+};
+
+extern void free_gimplify_stack (void);
+extern void push_gimplify_context (bool in_ssa = false,
+				   bool rhs_cond_ok = false);
+extern void pop_gimplify_context (gimple);
+extern gimple gimple_current_bind_expr (void);
+extern vec<gimple> gimple_bind_expr_stack (void);
+extern void gimplify_and_add (tree, gimple_seq *);
+extern tree get_formal_tmp_var (tree, gimple_seq *);
+extern tree get_initialized_tmp_var (tree, gimple_seq *, gimple_seq *);
+extern void declare_vars (tree, gimple, bool);
+extern void gimple_add_tmp_var (tree);
+extern tree unshare_expr (tree);
+extern tree unshare_expr_without_location (tree);
+extern tree voidify_wrapper_expr (tree, tree);
+extern tree build_and_jump (tree *);
+extern enum gimplify_status gimplify_self_mod_expr (tree *, gimple_seq *,
+						    gimple_seq *, bool, tree);
+extern tree gimple_boolify (tree);
+extern gimple_predicate rhs_predicate_for (tree);
+extern bool gimplify_stmt (tree *, gimple_seq *);
+extern void omp_firstprivatize_variable (struct gimplify_omp_ctx *, tree);
+extern enum gimplify_status gimplify_expr (tree *, gimple_seq *, gimple_seq *,
+					   bool (*) (tree), fallback_t);
+
+extern void gimplify_type_sizes (tree, gimple_seq *);
+extern void gimplify_one_sizepos (tree *, gimple_seq *);
+extern gimple gimplify_body (tree, bool);
+extern void gimplify_function_tree (tree);
+extern enum gimplify_status gimplify_va_arg_expr (tree *, gimple_seq *,
+						  gimple_seq *);
+gimple gimplify_assign (tree, tree, gimple_seq *);
+
+/* Return true if gimplify_one_sizepos doesn't need to gimplify
+   expr (when in TYPE_SIZE{,_UNIT} and similar type/decl size/bitsize
+   fields).  */
+
+static inline bool
+is_gimple_sizepos (tree expr)
+{
+  /* gimplify_one_sizepos doesn't need to do anything if the value isn't there,
+     is constant, or contains A PLACEHOLDER_EXPR.  We also don't want to do
+     anything if it's already a VAR_DECL.  If it's a VAR_DECL from another
+     function, the gimplifier will want to replace it with a new variable,
+     but that will cause problems if this type is from outside the function.
+     It's OK to have that here.  */
+  return (expr == NULL_TREE
+	  || TREE_CONSTANT (expr)
+	  || TREE_CODE (expr) == VAR_DECL
+	  || CONTAINS_PLACEHOLDER_P (expr));
+}                                        
+
+#endif /* GCC_GIMPLIFY_H */