m68k.h (PREFERRED_STACK_BOUNDARY): Define to 32 for ColdFire targets.

gcc/
	* config/m68k/m68k.h (PREFERRED_STACK_BOUNDARY): Define to 32
	for ColdFire targets.

From-SVN: r120965

gcc/ChangeLog

+2007-01-19  Richard Sandiford  <richard@codesourcery.com>
+
+	* config/m68k/m68k.h (PREFERRED_STACK_BOUNDARY): Define to 32
+	for ColdFire targets.
+
 2007-01-19  Nathan Sidwell  <nathan@codesourcery.com>
 	    Richard Sandiford  <richard@codesourcery.com>
 

gcc/config/m68k/m68k.h

@@ -284,6 +284,8 @@ Boston, MA 02110-1301, USA.  */
 #define STACK_BOUNDARY 16
 #define FUNCTION_BOUNDARY 16
 #define EMPTY_FIELD_BOUNDARY 16
+/* ColdFire strongly prefers a 32-bit aligned stack.  */
+#define PREFERRED_STACK_BOUNDARY (TARGET_COLDFIRE ? 32 : 16)
 
 /* No data type wants to be aligned rounder than this.
    Most published ABIs say that ints should be aligned on 16 bit