[patch] h8300.md: Add a new pattern.
Kazu Hirata
kazu@cs.umass.edu
Mon Dec 30 07:35:00 GMT 2002
Hi,
Attached is a patch to add a new pattern.
The new pattern can do the following
(A & 0xffff) + (A >> 16)
where A is an unsigend SImode register.
Tested on h8300 port. Committed.
Kazu Hirata
2002-12-30 Kazu Hirata <kazu@cs.umass.edu>
* config/h8300/h8300.md (*addsi3_lshiftrt_16_zexthi): New.
Index: h8300.md
===================================================================
RCS file: /cvs/gcc/gcc/gcc/config/h8300/h8300.md,v
retrieving revision 1.137
diff -u -r1.137 h8300.md
--- h8300.md 29 Dec 2002 22:25:39 -0000 1.137
+++ h8300.md 30 Dec 2002 15:29:22 -0000
@@ -2329,6 +2329,18 @@
[(set_attr "cc" "set_znv")
(set_attr "length" "6")])
+;; plus:SI
+
+(define_insn "*addsi3_lshiftrt_16_zexthi"
+ [(set (match_operand:SI 0 "register_operand" "=r")
+ (plus:SI (lshiftrt:SI (match_operand:SI 1 "register_operand" "r")
+ (const_int 16))
+ (zero_extend:SI (match_operand:HI 2 "register_operand" "0"))))]
+ "TARGET_H8300H || TARGET_H8300S"
+ "add.w\t%e1,%f0\;xor.w\t%e0,%e0\;rotxl.w\t%e0,%e0"
+ [(set_attr "cc" "clobber")
+ (set_attr "length" "6")])
+
;; ior:HI
(define_insn "*iorhi3_zext"
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