This is the mail archive of the gcc-patches@gcc.gnu.org mailing list for the GCC project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

[patch] h8300.md: Add a new pattern.


Hi,

Attached is a patch to add a pattern that extracts 16 bits starting
from bit 8.

Tested on h8300 port.  Committed.

Kazu Hirata

2003-03-08  Kazu Hirata  <kazu at cs dot umass dot edu>

	* config/h8300/h8300.md (*extzv_16_8): New.

Index: h8300.md
===================================================================
RCS file: /cvs/gcc/gcc/gcc/config/h8300/h8300.md,v
retrieving revision 1.190
diff -u -r1.190 h8300.md
--- h8300.md	7 Mar 2003 01:37:49 -0000	1.190
+++ h8300.md	8 Mar 2003 13:12:03 -0000
@@ -2646,6 +2646,17 @@
   [(set_attr "cc" "set_znv")
    (set_attr "length" "6")])
 
+(define_insn "*extzv_16_8"
+  [(set (match_operand:SI 0 "register_operand" "=r")
+	(zero_extract:SI (match_operand:SI 1 "register_operand" "r")
+			 (const_int 16)
+			 (const_int 8)))
+   (clobber (match_scratch:SI 2 "=&r"))]
+  "TARGET_H8300H"
+  "mov.w\\t%e1,%f2\;mov.b\\t%x1,%w0\;mov.b\\t%w2,%x0\;extu.l\\t%S0"
+  [(set_attr "length" "8")
+   (set_attr "cc" "set_znv")])
+
 ;; Extract the exponent of a float.
 
 (define_insn_and_split "*extzv_8_23"


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]