* config/h8300/h8300.md (*extzv_8_8): Use shorter code when
operands[0] and operands[1] are different.
From-SVN: r63718
-2003-03-02 Kazu Hirata <kazu@cs.umass.edu>
+2003-03-03 Kazu Hirata <kazu@cs.umass.edu>
+
+ * config/h8300/h8300.md (*extzv_8_8): Use shorter code when
+ operands[0] and operands[1] are different.
+
+2003-03-03 Kazu Hirata <kazu@cs.umass.edu>
* reload1.c (reload_cse_move2add): Remove variable success.
(const_int 8)
(const_int 8)))]
"TARGET_H8300H || TARGET_H8300S"
- "mov.b\\t%x1,%w0\;extu.w\\t%f0\;extu.l\\t%S0"
+ "*
+{
+ if (REG_P (operands[0]) && REG_P (operands[1])
+ && REGNO (operands[0]) != REGNO (operands[1]))
+ return \"sub.l\\t%S0,%S0\;mov.b\\t%x1,%w0\";
+ else
+ return \"mov.b\\t%x1,%w0\;extu.w\\t%f0\;extu.l\\t%S0\";
+}"
[(set_attr "cc" "set_znv")
(set_attr "length" "6")])