epiphany.md (mov<mode>, [...]): Check for misaligned memory operands.

        * config/epiphany/epiphany.md (mov<mode>, *mov<mode>_insn): Check
        for misaligned memory operands.
        * config/epiphany/predicates.md (misaligned_operand): New predicate.

From-SVN: r193890

gcc/ChangeLog

@@ -4,6 +4,10 @@
 	* config/epiphany/epiphany-protos.h (epiphany_regno_rename_ok): Declare.
 	* config/epiphany/epiphany.c (epiphany_regno_rename_ok): New function.
 
+	* config/epiphany/epiphany.md (mov<mode>, *mov<mode>_insn): Check
+	for misaligned memory operands.
+	* config/epiphany/predicates.md (misaligned_operand): New predicate.
+
 2012-11-28  Richard Biener  <rguenther@suse.de>
 
 	PR tree-optimization/54547

gcc/config/epiphany/epiphany.md

@@ -325,6 +325,7 @@
       if (epiphany_vect_align != 4 /* == 8 */
 	  && !reload_in_progress
 	  && (GET_CODE (operands[0]) == MEM || GET_CODE (operands[1]) == MEM)
+	  && !misaligned_operand (operands[1], <MODE>mode)
 	  && (GET_CODE (operands[0]) != SUBREG
 	      || (GET_MODE_SIZE (GET_MODE (SUBREG_REG (operands[0])))
 		  != GET_MODE_SIZE (<MODE>mode)
@@ -355,7 +356,9 @@
    ldrd %0,%X1
    strd %1,%X0"
   "reload_completed
-   && ((!MEM_P (operands[0]) && !MEM_P (operands[1]))
+   && (((!MEM_P (operands[0]) || misaligned_operand (operands[0], <MODE>mode))
+	&& (!MEM_P (operands[1])
+	    || misaligned_operand (operands[1], <MODE>mode)))
        || epiphany_vect_align == 4)"
   [(set (match_dup 2) (match_dup 3))
    (set (match_dup 4) (match_dup 5))]

gcc/config/epiphany/predicates.md

@@ -350,3 +350,8 @@
 (define_predicate "nonsymbolic_immediate_operand"
   (ior (match_test "immediate_operand (op, mode)")
        (match_code "const_vector"))) /* Is this specific enough?  */
+
+;; Return true if OP is misaligned memory operand
+(define_predicate "misaligned_operand"
+  (and (match_code "mem")
+       (match_test "MEM_ALIGN (op) < GET_MODE_ALIGNMENT (mode)")))