2015-01-21 Richard Biener <rguenther@suse.de>

	PR middle-end/64313
	* tree-core.h (builtin_info, builtin_info_type): Turn from
	an object with two arrays into an array of an object with
	decl and two flags, implicit_p and declared_p.
	* tree.h (builtin_decl_explicit, builtin_decl_implicit,
	set_builtin_decl, set_builtin_decl_implicit_p,
	builtin_decl_explicit_p, builtin_decl_implicit_p): Adjust.
	(set_builtin_decl_declared_p, builtin_decl_declared_p): New functions.
	* builtins.c (builtin_info): Adjust.
	* gimplify.c (gimplify_addr_expr): References to builtins
	that have been declared by the user makes them eligible for
	use by the compiler.  Call set_builtin_decl_implicit_p on them.

	c/
	* c-decl.c (merge_decls): Call set_builtin_decl_declared_p
	for builtins the user declared correctly.

	cp/
	* decl.c (duplicate_decls): Call set_builtin_decl_declared_p
	for builtins the user declared correctly.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@219928 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 8 insertions, 5 deletions

diff --git a/gcc/tree-core.h b/gcc/tree-core.h
index 735ce5cf307..c7a21b5c353 100644
--- a/gcc/tree-core.h
+++ b/gcc/tree-core.h
@@ -1853,11 +1853,14 @@ struct const_call_expr_arg_iterator {
 };
 
 /* The builtin_info structure holds the FUNCTION_DECL of the standard builtin
-   function, and a flag that says if the function is available implicitly, or
-   whether the user has to code explicit calls to __builtin_<xxx>.  */
+   function, and flags.  */
 struct GTY(()) builtin_info_type {
-  tree decl[(int)END_BUILTINS];
-  bool implicit_p[(int)END_BUILTINS];
+  tree decl;
+  /* Whether the user can use <xxx> instead of explicitly using calls
+     to __builtin_<xxx>.  */
+  unsigned implicit_p : 1;
+  /* Whether the user has provided a declaration of <xxx>.  */
+  unsigned declared_p : 1;
 };
 
 
@@ -1913,7 +1916,7 @@ extern int tree_node_sizes[];
 extern bool in_gimple_form;
 
 /* Functional interface to the builtin functions.  */
-extern GTY(()) builtin_info_type builtin_info;
+extern GTY(()) builtin_info_type builtin_info[(int)END_BUILTINS];
 
 /* If nonzero, an upper limit on alignment of structure fields, in bits,  */
 extern unsigned int maximum_field_alignment;