* config/h8300/h8300.md (a peephole2): New.

From-SVN: r63224

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index c57de2ddaa2071735d04b1e60304645d556b2888..4643a79eb184476a296bbcc7fd90ebe323453367 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+2003-02-21  Kazu Hirata  <kazu@cs.umass.edu>
+
+       * config/h8300/h8300.md (a peephole2): New.
+
 Fri Feb 21 11:05:44 CET 2003  Jan Hubicka  <jh@suse.cz>
 
        * cfgrtl.c (commit_one_edge_insertion): Only mark BB for splitting.

diff --git a/gcc/config/h8300/h8300.md b/gcc/config/h8300/h8300.md
index 254d382edd55ddb8fe7d7c45310c3a8b29207ea3..beb4534c9036a35e17dea5cb0c65ed921960175d 100644 (file)
--- a/gcc/config/h8300/h8300.md
+++ b/gcc/config/h8300/h8300.md
@@ -3847,3 +3847,35 @@
                      (pc)))]
   "operands[4] = gen_rtx_REG (HImode, REGNO (operands[0]));
    operands[5] = GEN_INT (trunc_int_for_mode (INTVAL (operands[1]), HImode));")
+
+(define_peephole2
+  [(set (match_operand:SI 0 "register_operand" "")
+       (and:SI (match_dup 0)
+               (match_operand:SI 1 "const_int_qi_operand" "")))
+   (set (match_dup 0)
+       (xor:SI (match_dup 0)
+               (match_operand:SI 2 "const_int_qi_operand" "")))
+   (set (cc0)
+       (match_dup 0))
+   (set (pc)
+       (if_then_else (match_operator 4 "eqne_operator"
+                       [(cc0) (const_int 0)])
+                     (label_ref (match_operand 3 "" ""))
+                     (pc)))]
+  "peep2_reg_dead_p (3, operands[0])
+   && (~INTVAL (operands[1]) & INTVAL (operands[2])) == 0"
+  [(set (match_dup 5)
+       (and:QI (match_dup 5)
+               (match_dup 6)))
+   (set (match_dup 5)
+       (xor:QI (match_dup 5)
+               (match_dup 7)))
+   (set (cc0)
+       (match_dup 5))
+   (set (pc)
+       (if_then_else (match_op_dup 4 [(cc0) (const_int 0)])
+                     (label_ref (match_dup 3))
+                     (pc)))]
+  "operands[5] = gen_rtx_REG (QImode, REGNO (operands[0]));
+   operands[6] = GEN_INT (trunc_int_for_mode (INTVAL (operands[1]), QImode));
+   operands[7] = GEN_INT (trunc_int_for_mode (INTVAL (operands[2]), QImode));")