config.gcc (mt-*-*): Add --with-arch support.

	* config.gcc (mt-*-*): Add --with-arch support.
	(--with): Print accepted options on error.
	* config/mt/mt.h (OPTION_DEFAULT_SPECS): Define.

	* config/mt/mt.c (DEF_VEC_P(basic_block),
	DEF_VEC_ALLOC_P(basic_bloc,heap)): Remove from here.

From-SVN: r109124

gcc/ChangeLog

+2005-12-28  Nathan Sidwell  <nathan@codesourcery.com>
+
+	* config.gcc (mt-*-*): Add --with-arch support.
+	(--with): Print accepted options on error.
+	* config/mt/mt.h (OPTION_DEFAULT_SPECS): Define.
+
+	* config/mt/mt.c (DEF_VEC_P(basic_block),
+	DEF_VEC_ALLOC_P(basic_bloc,heap)): Remove from here.
+
 2005-12-28  Daniel Berlin  <dberlin@dberlin.org>
 
 	Fix PR tree-optimization/25394

gcc/config.gcc

@@ -2669,6 +2669,25 @@ case "${target}" in
 		esac
 		;;
 
+	mt-*-*)
+		supported_defaults="arch"
+
+		case "$with_arch" in
+		"" \
+		| ms1-64-001 \
+		| ms1-16-002 \
+		| ms1-16-003 \
+		| ms2 \
+		| "")
+			# OK
+			;;
+		*)
+			echo "Unknown arch used in --with-arch=$with_arch" 1>&2
+			exit 1
+			;;
+		esac
+		;;
+
 	powerpc*-*-* | rs6000-*-*)
 		supported_defaults="cpu float tune"
 
@@ -2923,6 +2942,7 @@ do
 			;;
 		*)
 			echo "This target does not support --with-$option." 2>&1
+			echo "Valid --with options are: $supported_defaults" 2>&1
 			exit 1
 			;;
 		esac

gcc/config/mt/mt.c

@@ -1654,11 +1654,7 @@ void mt_add_loop (void)
    filling.  */
 #define MAX_LOOP_LENGTH (200 * 4)
 
-/* We need to keep a vector of basic blocks */
-DEF_VEC_P (basic_block);
-DEF_VEC_ALLOC_P (basic_block,heap);
-
-/* And a vector of loops */
+/* We need to keep a vector of loops */
 typedef struct loop_info *loop_info;
 DEF_VEC_P (loop_info);
 DEF_VEC_ALLOC_P (loop_info,heap);

gcc/config/mt/mt.h

@@ -38,6 +38,11 @@ enum epilogue_type
 extern enum processor_type mt_cpu;
 
 
+/* Support for a compile-time default CPU, et cetera.  The rules are:
+   --with-arch is ignored if -march is specified.  */
+#define OPTION_DEFAULT_SPECS \
+  {"arch", "%{!march=*:-march=%(VALUE)}" }
+
 /* A C string constant that tells the GCC driver program options to pass to
    the assembler.  */
 #undef  ASM_SPEC