c-common.h (c_register_addr_space): Add prototype.

	* c-common.h (c_register_addr_space): Add prototype.
	(ADDR_SPACE_KEYWORD): Remove.
	* c-common.c (c_register_addr_space): New function.
	(c_addr_space_name): Reimplement.
	(c_common_reswords): Do not include TARGET_ADDR_SPACE_KEYWORDS.

	* config/spu/spu.h (TARGET_ADDR_SPACE_KEYWORDS): Remove.
	(REGISTER_TARGET_PRAGMAS): Call c_register_addr_space.

	* doc/tm.texi (Named Address Spaces): Mention c_register_addr_space.
	Remove TARGET_ADDR_SPACE_KEYWORDS.

From-SVN: r159916

gcc/ChangeLog

+2010-05-27  Ulrich Weigand  <Ulrich.Weigand@de.ibm.com>
+
+	* c-common.h (c_register_addr_space): Add prototype.
+	(ADDR_SPACE_KEYWORD): Remove.
+	* c-common.c (c_register_addr_space): New function.
+	(c_addr_space_name): Reimplement.
+	(c_common_reswords): Do not include TARGET_ADDR_SPACE_KEYWORDS.
+
+	* config/spu/spu.h (TARGET_ADDR_SPACE_KEYWORDS): Remove.
+	(REGISTER_TARGET_PRAGMAS): Call c_register_addr_space.
+
+	* doc/tm.texi (Named Address Spaces): Mention c_register_addr_space.
+	Remove TARGET_ADDR_SPACE_KEYWORDS.
+
 2010-05-27  Joseph Myers  <joseph@codesourcery.com>
 
 	* input.c: New file.

gcc/c-common.c

@@ -718,11 +718,6 @@ const struct c_common_resword c_common_reswords[] =
   { "inout",		RID_INOUT,		D_OBJC },
   { "oneway",		RID_ONEWAY,		D_OBJC },
   { "out",		RID_OUT,		D_OBJC },
-
-#ifdef TARGET_ADDR_SPACE_KEYWORDS
-  /* Any address space keywords recognized by the target.  */
-  TARGET_ADDR_SPACE_KEYWORDS,
-#endif
 };
 
 const unsigned int num_c_common_reswords =
@@ -857,17 +852,34 @@ const struct attribute_spec c_common_format_attribute_table[] =
   { NULL,                     0, 0, false, false, false, NULL }
 };
 
+
+/* Register reserved keyword WORD as qualifier for address space AS.  */
+
+void
+c_register_addr_space (const char *word, addr_space_t as)
+{
+  int rid = RID_FIRST_ADDR_SPACE + as;
+  tree id;
+
+  /* Address space qualifiers are only supported
+     in C with GNU extensions enabled.  */
+  if (c_dialect_cxx () || c_dialect_objc () || flag_no_asm)
+    return;
+
+  id = get_identifier (word);
+  C_SET_RID_CODE (id, rid);
+  C_IS_RESERVED_WORD (id) = 1;
+  ridpointers [rid] = id;
+}
+
 /* Return identifier for address space AS.  */
+
 const char *
 c_addr_space_name (addr_space_t as)
 {
-  unsigned int i;
-
-  for (i = 0; i < num_c_common_reswords; i++)
-    if (c_common_reswords[i].rid == RID_FIRST_ADDR_SPACE + as)
-      return c_common_reswords[i].word;
-
-  gcc_unreachable ();
+  int rid = RID_FIRST_ADDR_SPACE + as;
+  gcc_assert (ridpointers [rid]);
+  return IDENTIFIER_POINTER (ridpointers [rid]);
 }
 
 /* Push current bindings for the function name VAR_DECLS.  */

gcc/c-common.h

@@ -288,10 +288,6 @@ struct c_common_resword
 #define D_CXX_OBJC	0x100	/* In Objective C, and C++, but not C.  */
 #define D_CXXWARN	0x200	/* In C warn with -Wcxx-compat.  */
 
-/* Macro for backends to define named address keywords.  */
-#define ADDR_SPACE_KEYWORD(STRING, VALUE) \
-  { STRING, RID_FIRST_ADDR_SPACE + (VALUE), D_CONLY | D_EXT }
-
 /* The reserved keyword table.  */
 extern const struct c_common_resword c_common_reswords[];
 
@@ -803,6 +799,7 @@ extern const struct attribute_spec c_common_format_attribute_table[];
 
 extern tree (*make_fname_decl) (location_t, tree, int);
 
+extern void c_register_addr_space (const char *str, addr_space_t as);
 extern const char *c_addr_space_name (addr_space_t as);
 extern tree identifier_global_value (tree);
 extern void record_builtin_type (enum rid, const char *, tree);

gcc/config/spu/spu.h

@@ -245,6 +245,7 @@ enum reg_class {
 	 && GET_MODE_SIZE (FROM) != GET_MODE_SIZE (TO))
 
 #define REGISTER_TARGET_PRAGMAS() do {					\
+c_register_addr_space ("__ea", ADDR_SPACE_EA);				\
 targetm.resolve_overloaded_builtin = spu_resolve_overloaded_builtin;	\
 }while (0);
 
@@ -608,9 +609,6 @@ targetm.resolve_overloaded_builtin = spu_resolve_overloaded_builtin;	\
 /* Address spaces.  */
 #define ADDR_SPACE_EA	1
 
-/* Named address space keywords.  */
-#define TARGET_ADDR_SPACE_KEYWORDS ADDR_SPACE_KEYWORD ("__ea", ADDR_SPACE_EA)
-
 
 /* Builtins.  */
 

gcc/doc/tm.texi

@@ -9966,17 +9966,14 @@ Internally, address spaces are represented as a small integer in the
 range 0 to 15 with address space 0 being reserved for the generic
 address space.
 
-@defmac TARGET_ADDR_SPACE_KEYWORDS
-A list of @code{ADDR_SPACE_KEYWORD} macros to define each named
-address keyword.  The @code{ADDR_SPACE_KEYWORD} macro takes two
-arguments, the keyword string and the number of the named address
-space.  For example, the SPU port uses the following to declare
-@code{__ea} as the keyword for named address space #1:
+To register a named address space qualifier keyword with the C front end,
+the target may call the @code{c_register_addr_space} routine.  For example,
+the SPU port uses the following to declare @code{__ea} as the keyword for
+named address space #1:
 @smallexample
 #define ADDR_SPACE_EA 1
-#define TARGET_ADDR_SPACE_KEYWORDS ADDR_SPACE_KEYWORD ("__ea", ADDR_SPACE_EA)
+c_register_addr_space ("__ea", ADDR_SPACE_EA);
 @end smallexample
-@end defmac
 
 @deftypefn {Target Hook} {enum machine_mode} TARGET_ADDR_SPACE_POINTER_MODE (addr_space_t @var{address_space})
 Define this to return the machine mode to use for pointers to