Generate constant for shift once.

From-SVN: r52644

gcc/ChangeLog

+2002-04-22  Tom Rix  <trix@redhat.com>
+
+	* expmed.c (init_expmed): Generate shifted constant once.
+
 2002-04-22  Zack Weinberg  <zack@codesourcery.com>
 
 	* c-lex.c (lex_charconst): Call convert to get constant in

gcc/expmed.c

@@ -144,19 +144,18 @@ init_expmed ()
 
   for (m = 1; m < MAX_BITS_PER_WORD; m++)
     {
+      rtx c_int = GEN_INT ((HOST_WIDE_INT) 1 << m);
       shift_cost[m] = shiftadd_cost[m] = shiftsub_cost[m] = 32000;
 
       XEXP (SET_SRC (PATTERN (shift_insn)), 1) = GEN_INT (m);
       if (recog (PATTERN (shift_insn), shift_insn, &dummy) >= 0)
 	shift_cost[m] = rtx_cost (SET_SRC (PATTERN (shift_insn)), SET);
 
-      XEXP (XEXP (SET_SRC (PATTERN (shiftadd_insn)), 0), 1)
-	= GEN_INT ((HOST_WIDE_INT) 1 << m);
+      XEXP (XEXP (SET_SRC (PATTERN (shiftadd_insn)), 0), 1) = c_int;
       if (recog (PATTERN (shiftadd_insn), shiftadd_insn, &dummy) >= 0)
 	shiftadd_cost[m] = rtx_cost (SET_SRC (PATTERN (shiftadd_insn)), SET);
 
-      XEXP (XEXP (SET_SRC (PATTERN (shiftsub_insn)), 0), 1)
-	= GEN_INT ((HOST_WIDE_INT) 1 << m);
+      XEXP (XEXP (SET_SRC (PATTERN (shiftsub_insn)), 0), 1) = c_int;
       if (recog (PATTERN (shiftsub_insn), shiftsub_insn, &dummy) >= 0)
 	shiftsub_cost[m] = rtx_cost (SET_SRC (PATTERN (shiftsub_insn)), SET);
     }