explow.c (set_stack_check_libfunc): Adjust to accept name as a string instead of SYMBOL_REF rtx.

gcc/ChangeLog:
	* explow.c (set_stack_check_libfunc): Adjust to accept name as a
	string instead of SYMBOL_REF rtx.
	* rtl.h (set_stack_check_libfunc): Move prototype from here...
	* libfuncs.h: ...to here.  Adjust for explow.c change.

ada/ChangeLog:
	* gcc-interface/trans.c: Do not include rtl.h, insclude libfuncs.h.
	(gigi): Adjust call to set_stack_check_libfunc.

From-SVN: r159900

gcc/ChangeLog

+2010-05-26  Steven Bosscher  <steven@gcc.gnu.org>
+
+	* explow.c (set_stack_check_libfunc): Adjust to accept name as a
+	string instead of SYMBOL_REF rtx.
+	* rtl.h (set_stack_check_libfunc): Move prototype from here...
+	* libfuncs.h: ...to here.  Adjust for explow.c change.
+
 2010-05-26  Joseph Myers  <joseph@codesourcery.com>
 
 	* pretty-print.c: Don't include ggc.h.

gcc/ada/ChangeLog

 2010-05-26  Steven Bosscher  <steven@gcc.gnu.org>
 
+	* gcc-interface/trans.c: Do not include rtl.h, insclude libfuncs.h.
+	(gigi): Adjust call to set_stack_check_libfunc.
+
+2010-05-26  Steven Bosscher  <steven@gcc.gnu.org>
+
 	* gcc-interface/utils.c: Do not include rtl.h.
 
 2010-05-25  Steven Bosscher  <steven@gcc.gnu.org>

gcc/ada/gcc-interface/trans.c

@@ -29,11 +29,9 @@
 #include "tm.h"
 #include "tree.h"
 #include "flags.h"
-#include "rtl.h"	/* FIXME: For set_stack_check_libfunc and
-			   gen_rtx_SYMBOL_REF -- here is a front end
-			   still trying to generate RTL!  */
 #include "ggc.h"
 #include "output.h"
+#include "libfuncs.h"	/* For set_stack_check_libfunc.  */
 #include "tree-iterator.h"
 #include "gimple.h"
 
@@ -313,7 +311,7 @@ gigi (Node_Id gnat_root, int max_gnat_node, int number_name ATTRIBUTE_UNUSED,
 
   /* Enable GNAT stack checking method if needed */
   if (!Stack_Check_Probes_On_Target)
-    set_stack_check_libfunc (gen_rtx_SYMBOL_REF (Pmode, "_gnat_stack_check"));
+    set_stack_check_libfunc ("_gnat_stack_check");
 
   /* Retrieve alignment settings.  */
   double_float_alignment = get_target_double_float_alignment ();

gcc/explow.c

@@ -33,6 +33,7 @@ along with GCC; see the file COPYING3.  If not see
 #include "function.h"
 #include "expr.h"
 #include "optabs.h"
+#include "libfuncs.h"
 #include "hard-reg-set.h"
 #include "insn-config.h"
 #include "ggc.h"
@@ -1346,9 +1347,10 @@ allocate_dynamic_stack_space (rtx size, rtx target, int known_align)
 static GTY(()) rtx stack_check_libfunc;
 
 void
-set_stack_check_libfunc (rtx libfunc)
+set_stack_check_libfunc (const char *libfunc_name)
 {
-  stack_check_libfunc = libfunc;
+  gcc_assert (stack_check_libfunc == NULL_RTX);
+  stack_check_libfunc = gen_rtx_SYMBOL_REF (Pmode, libfunc_name);
 }
 
 /* Emit one stack probe at ADDRESS, an address within the stack.  */

gcc/libfuncs.h

@@ -71,4 +71,7 @@ extern GTY(()) rtx libfunc_table[LTI_MAX];
 
 #define gcov_flush_libfunc	(libfunc_table[LTI_gcov_flush])
 
+/* In explow.c */
+extern void set_stack_check_libfunc (const char *);
+
 #endif /* GCC_LIBFUNCS_H */

gcc/rtl.h

@@ -1548,7 +1548,6 @@ extern int currently_expanding_to_rtl;
 extern int ceil_log2 (unsigned HOST_WIDE_INT);
 
 /* In explow.c */
-extern void set_stack_check_libfunc (rtx);
 extern HOST_WIDE_INT trunc_int_for_mode	(HOST_WIDE_INT, enum machine_mode);
 extern rtx plus_constant (rtx, HOST_WIDE_INT);