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Commit 68d0a3d2 by Kazu Hirata Committed by Kazu Hirata
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* config/h8300/h8300.md (two define_peephole2): New. 

From-SVN: r60036
parent 722d59a3
Showing with 60 additions and 0 deletions
gcc/ChangeLog
2002-12-11 Kazu Hirata <kazu@cs.umass.edu>
* config/h8300/h8300.md (two define_peephole2): New.
2002-12-11 Kazu Hirata <kazu@cs.umass.edu>
* config/h8300/h8300.h (CONST_OK_FOR_J): Remove.
(CONST_OK_FOR_K): Likewise.
(CONST_OK_FOR_M): Likewise.
......
gcc/config/h8300/h8300.md
......@@ -2689,3 +2689,59 @@
(set (mem:SI (plus:SI (reg:SI SP_REG) (const_int -8)))
(match_dup 1))])]
"")
;; Turn
;;
;; mov.w #2,r0
;; add.w r7,r0 (6 bytes)
;;
;; into
;;
;; mov.w r7,r0
;; adds #2,r0 (4 bytes)
(define_peephole2
[(set (match_operand:HI 0 "register_operand" "")
(match_operand:HI 1 "const_int_operand" ""))
(set (match_dup 0)
(plus:HI (match_dup 0)
(match_operand:HI 2 "register_operand" "")))]
"REG_P (operands[0]) && REG_P (operands[2])
&& REGNO (operands[0]) != REGNO (operands[2])
&& (CONST_OK_FOR_L (INTVAL (operands[1]))
|| CONST_OK_FOR_N (INTVAL (operands[1])))"
[(set (match_dup 0)
(match_dup 2))
(set (match_dup 0)
(plus:HI (match_dup 0)
(match_dup 1)))]
"")
;; Turn
;;
;; sub.l er0,er0
;; add.b #4,r0l
;; add.l er7,er0 (6 bytes)
;;
;; into
;;
;; mov.l er7,er0
;; adds #4,er0 (4 bytes)
(define_peephole2
[(set (match_operand:SI 0 "register_operand" "")
(match_operand:SI 1 "const_int_operand" ""))
(set (match_dup 0)
(plus:SI (match_dup 0)
(match_operand:SI 2 "register_operand" "")))]
"(TARGET_H8300H || TARGET_H8300S)
&& REG_P (operands[0]) && REG_P (operands[2])
&& REGNO (operands[0]) != REGNO (operands[2])
&& (CONST_OK_FOR_L (INTVAL (operands[1]))
|| CONST_OK_FOR_N (INTVAL (operands[1])))"
[(set (match_dup 0)
(match_dup 2))
(set (match_dup 0)
(plus:SI (match_dup 0)
(match_dup 1)))]
"")
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