+2009-07-15 Richard Earnshaw <rearnsha@arm.com>
+
+ * arm.md (ior_xor): New code iterator.
+ (split for ior/xor with shift and zero-extend): New split pattern.
+ * arm/predicates.md (subreg_lowpart_operator): New special predicate.
+
2009-07-15 Richard Guenther <rguenther@suse.de>
* tree-ssa-structalias.c (make_constraint_from_heapvar): Initialize
""
)
+(define_code_iterator ior_xor [ior xor])
+
+(define_split
+ [(set (match_operand:SI 0 "s_register_operand" "")
+ (ior_xor:SI (and:SI (ashift:SI
+ (match_operand:SI 1 "s_register_operand" "")
+ (match_operand:SI 2 "const_int_operand" ""))
+ (match_operand:SI 3 "const_int_operand" ""))
+ (zero_extend:SI
+ (match_operator 5 "subreg_lowpart_operator"
+ [(match_operand:SI 4 "s_register_operand" "")]))))]
+ "TARGET_32BIT
+ && (INTVAL (operands[3])
+ == (GET_MODE_MASK (GET_MODE (operands[5]))
+ & (GET_MODE_MASK (GET_MODE (operands[5]))
+ << (INTVAL (operands[2])))))"
+ [(set (match_dup 0) (ior_xor:SI (ashift:SI (match_dup 1) (match_dup 2))
+ (match_dup 4)))
+ (set (match_dup 0) (zero_extend:SI (match_dup 5)))]
+ "operands[5] = gen_lowpart (GET_MODE (operands[5]), operands[0]);"
+)
+
(define_insn "*compareqi_eq0"
[(set (reg:CC_Z CC_REGNUM)
(compare:CC_Z (match_operand:QI 0 "s_register_operand" "r")
|| REGNO_REG_CLASS (REGNO (op)) == FPA_REGS));
})
+(define_special_predicate "subreg_lowpart_operator"
+ (and (match_code "subreg")
+ (match_test "subreg_lowpart_p (op)")))
+
;; Reg, subreg(reg) or const_int.
(define_predicate "reg_or_int_operand"
(ior (match_code "const_int")