v850.md (mulhisi3): Expand the const_int case separately to avoid trying to sign...

* config/v850/v850.md (mulhisi3): Expand the const_int case
separately to avoid trying to sign extend the const.

From-SVN: r73256

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index e26d5c3..cb0d1b5 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2003-11-04  DJ Delorie  <dj@redhat.com>
+
+       * config/v850/v850.md (mulhisi3): Expand the const_int case
+       separately to avoid trying to sign extend the const.
+
 2003-11-04  Richard Sandiford  <rsandifo@redhat.com>
 
        * emit-rtl.c (copy_rtx_if_shared): Don't allow MEMs with constant

diff --git a/gcc/config/v850/v850.md b/gcc/config/v850/v850.md
index ba058a4..8e028ab 100644 (file)
--- a/gcc/config/v850/v850.md
+++ b/gcc/config/v850/v850.md
@@ -368,7 +368,11 @@
          (sign_extend:SI (match_operand:HI 1 "register_operand" ""))
          (sign_extend:SI (match_operand:HI 2 "nonmemory_operand" ""))))]
   ""
-  "")
+  "if (GET_CODE (operands[2]) == CONST_INT)
+     {
+       emit_insn (gen_mulhisi3_internal2 (operands[0], operands[1], operands[2]));
+       DONE;
+     }")
 
 (define_insn "*mulhisi3_internal1"
   [(set (match_operand:SI 0 "register_operand" "=r")
@@ -381,13 +385,11 @@
    (set_attr "cc" "none_0hit")
    (set_attr "type" "mult")])
 
-;; ??? Sign extending constants isn't valid.  Fix?
-
-(define_insn "*mulhisi3_internal2"
+(define_insn "mulhisi3_internal2"
   [(set (match_operand:SI 0 "register_operand" "=r,r")
        (mult:SI
          (sign_extend:SI (match_operand:HI 1 "register_operand" "%0,r"))
-         (sign_extend:SI (match_operand 2 "const_int_operand" "J,K"))))]
+         (match_operand:HI 2 "const_int_operand" "J,K")))]
   ""
   "@
    mulh %2,%0