arm.h (MAX_LDM_STM_OPS): New macro.

	* config/arm/arm.h (MAX_LDM_STM_OPS): New macro.
	* config/arm/arm.c (multiple_operation_profitable_p,
	compute_offset_order): New static functions.
	(load_multiple_sequence, store_multiple_sequence): Use them.
	Replace constant 4 with MAX_LDM_STM_OPS.  Compute order[0] from
	memory offsets, not register numbers.
	(emit_ldm_seq, emit_stm_seq): Replace constant 4 with MAX_LDM_STM_OPS.

From-SVN: r159089

gcc/ChangeLog

+2010-05-06  Bernd Schmidt  <bernds@codesourcery.com>
+
+	* config/arm/arm.h (MAX_LDM_STM_OPS): New macro.
+	* config/arm/arm.c (multiple_operation_profitable_p,
+	compute_offset_order): New static functions.
+	(load_multiple_sequence, store_multiple_sequence): Use them.
+	Replace constant 4 with MAX_LDM_STM_OPS.  Compute order[0] from
+	memory offsets, not register numbers.
+	(emit_ldm_seq, emit_stm_seq): Replace constant 4 with MAX_LDM_STM_OPS.
+
 2010-05-05  Steven Bosscher  <steven@gcc.gnu.org>
 
 	* stor-layout.c (pending_sizes): Change the type to

gcc/config/arm/arm.h

@@ -2769,4 +2769,8 @@ enum arm_builtins
 #define NEED_INDICATE_EXEC_STACK	0
 #endif
 
+/* The maximum number of parallel loads or stores we support in an ldm/stm
+   instruction.  */
+#define MAX_LDM_STM_OPS 4
+
 #endif /* ! GCC_ARM_H */