rs6000.md (movdf_hardfloat32): Handle PRE_INC and PRE_DEC the same as offsettable in cases 1 and 2.

        * rs6000.md (movdf_hardfloat32): Handle PRE_INC and PRE_DEC the
        same as offsettable in cases 1 and 2.

From-SVN: r27898

gcc/ChangeLog

+Fri Jul  2 00:04:23 1999  David Edelsohn  <edelsohn@gnu.org>
+
+	* rs6000.md (movdf_hardfloat32): Handle PRE_INC and PRE_DEC the
+	same as offsettable in cases 1 and 2.
+
 Thu Jul  1 20:54:10 1999  Richard Henderson  <rth@cygnus.com>
 
 	* alpha.md (extqh): Define as 64-((R&7)*8) instead of 56-(((R-1)&7)*8).

gcc/config/rs6000/rs6000.md

@@ -6329,7 +6329,9 @@
     case 1:
       if (offsettable_memref_p (operands[1])
 	  || (GET_CODE (operands[1]) == MEM
-	      && GET_CODE (XEXP (operands[1], 0)) == LO_SUM))
+	      && (GET_CODE (XEXP (operands[1], 0)) == LO_SUM
+		  || GET_CODE (XEXP (operands[1], 0)) == PRE_INC
+		  || GET_CODE (XEXP (operands[1], 0)) == PRE_DEC)))
 	{
 	  /* If the low-address word is used in the address, we must load
 	     it last.  Otherwise, load it first.  Note that we cannot have
@@ -6345,10 +6347,6 @@
 	{
 	  rtx addreg;
 
-	  if (GET_CODE (XEXP (operands[1], 0)) == PRE_INC
-	      || GET_CODE (XEXP (operands[1], 0)) == PRE_DEC)
-	    abort ();
-
 	  addreg = find_addr_reg (XEXP (operands[1], 0));
 	  if (refers_to_regno_p (REGNO (operands[0]),
 				 REGNO (operands[0]) + 1,
@@ -6371,16 +6369,14 @@
     case 2:
       if (offsettable_memref_p (operands[0])
 	  || (GET_CODE (operands[0]) == MEM
-	      && GET_CODE (XEXP (operands[0], 0)) == LO_SUM))
+	      && (GET_CODE (XEXP (operands[0], 0)) == LO_SUM
+		  || GET_CODE (XEXP (operands[0], 0)) == PRE_INC
+		  || GET_CODE (XEXP (operands[0], 0)) == PRE_DEC)))
 	return \"{st%U0|stw%U0} %1,%0\;{st|stw} %L1,%L0\";
       else
 	{
 	  rtx addreg;
 
-	  if (GET_CODE (XEXP (operands[0], 0)) == PRE_INC
-	      || GET_CODE (XEXP (operands[0], 0)) == PRE_DEC)
-	    abort ();
-
 	  addreg = find_addr_reg (XEXP (operands[0], 0));
 	  output_asm_insn (\"{stx|stwx} %1,%0\", operands);
 	  output_asm_insn (\"{cal|la} %0,4(%0)\", &addreg);