+2003-03-06 Kazu Hirata <kazu@cs.umass.edu>
+
+ * config/h8300/h8300.md (a new peephole2): New.
+
Thu Mar 6 14:20:15 CET 2003 Jan Hubicka <jh@suse.cz>
* cgraph.c (cgraph_node): Do not confuse nested functions and methods.
"operands[2] = gen_lowpart (QImode, operands[0]);
operands[3] = gen_lowpart (QImode, operands[1]);")
+(define_peephole2
+ [(set (match_operand:SI 0 "register_operand" "")
+ (match_operand:SI 1 "memory_operand" ""))
+ (set (match_dup 0)
+ (and:SI (match_dup 0)
+ (match_operand:SI 2 "const_int_operand" "")))]
+ "(TARGET_H8300H || TARGET_H8300S)
+ && !reg_overlap_mentioned_p (operands[0], operands[1])
+ && !(GET_CODE (operands[1]) == MEM && MEM_VOLATILE_P (operands[1]))
+ && (INTVAL (operands[2]) & ~0xffff) == 0
+ && INTVAL (operands[2]) != 255"
+ [(set (match_dup 3)
+ (match_dup 4))
+ (set (match_dup 0)
+ (and:SI (match_dup 0)
+ (match_dup 2)))]
+ "operands[3] = gen_lowpart (HImode, operands[0]);
+ operands[4] = gen_lowpart (HImode, operands[1]);")
+
;; (compare (reg:SI) (const_int)) takes 6 bytes, so we try to achieve
;; the equivalent with shorter sequences. Here is the summary. Cases
;; are grouped for each define_peephole2.