+2002-04-02 Richard Henderson <rth@redhat.com>
+
+ PR opt/420
+ * config/m68k/m68k.md (dbcc peepholes): Match four forms of dbra.
+
2002-04-01 Richard Henderson <rth@redhat.com>
PR target/1538
;;
;; Which moves the jCC condition outside the inner loop for free.
;;
+
+(define_peephole
+ [(set (pc) (if_then_else (match_operator 3 "valid_dbcc_comparison_p"
+ [(cc0) (const_int 0)])
+ (label_ref (match_operand 2 "" ""))
+ (pc)))
+ (parallel
+ [(set (pc)
+ (if_then_else
+ (ne (match_operand:HI 0 "register_operand" "")
+ (const_int 0))
+ (label_ref (match_operand 1 "" ""))
+ (pc)))
+ (set (match_dup 0)
+ (plus:HI (match_dup 0)
+ (const_int -1)))])]
+ "!TARGET_5200 && DATA_REG_P (operands[0]) && ! flags_in_68881 ()"
+ "*
+{
+ CC_STATUS_INIT;
+ output_dbcc_and_branch (operands);
+ return \"\";
+}")
+
+(define_peephole
+ [(set (pc) (if_then_else (match_operator 3 "valid_dbcc_comparison_p"
+ [(cc0) (const_int 0)])
+ (label_ref (match_operand 2 "" ""))
+ (pc)))
+ (parallel
+ [(set (pc)
+ (if_then_else
+ (ne (match_operand:SI 0 "register_operand" "")
+ (const_int 0))
+ (label_ref (match_operand 1 "" ""))
+ (pc)))
+ (set (match_dup 0)
+ (plus:SI (match_dup 0)
+ (const_int -1)))])]
+ "!TARGET_5200 && DATA_REG_P (operands[0]) && ! flags_in_68881 ()"
+ "*
+{
+ CC_STATUS_INIT;
+ output_dbcc_and_branch (operands);
+ return \"\";
+}")
+
(define_peephole
[(set (pc) (if_then_else (match_operator 3 "valid_dbcc_comparison_p"
[(cc0) (const_int 0)])
(parallel
[(set (pc)
(if_then_else
- (ge (plus:HI (match_operand:HI 0 "register_operand" "+d")
+ (ge (plus:HI (match_operand:HI 0 "register_operand" "")
(const_int -1))
(const_int 0))
(label_ref (match_operand 1 "" ""))
(parallel
[(set (pc)
(if_then_else
- (ge (plus:SI (match_operand:SI 0 "register_operand" "+d")
+ (ge (plus:SI (match_operand:SI 0 "register_operand" "")
(const_int -1))
(const_int 0))
(label_ref (match_operand 1 "" ""))