v850.c (ep_memory_operand): Offsets < 0 are not valid for EP addressing modes.

        * v850.c (ep_memory_operand): Offsets < 0 are not valid for EP
        addressing modes.
        (v850_reorg): Similarly.

From-SVN: r23747

gcc/ChangeLog

 Sat Nov 21 22:12:09 1998  Jeffrey A Law  (law@cygnus.com)
 
+	* v850.c (ep_memory_operand): Offsets < 0 are not valid for EP
+	addressing modes.
+	(v850_reorg): Similarly.
+
 	* loop.c (check_dbra_loop): Avoid using gen_add2_insn.
 
 Sat Nov 21 02:18:38 1998  J"orn Rennecke <amylaar@cygnus.co.uk>

gcc/config/v850/v850.c

@@ -944,6 +944,7 @@ ep_memory_operand (op, mode, unsigned_load)
       op1 = XEXP (addr, 1);
       if (GET_CODE (op1) == CONST_INT
 	  && INTVAL (op1) < max_offset
+	  && INTVAL (op1) >= 0
 	  && (INTVAL (op1) & mask) == 0)
 	{
 	  if (GET_CODE (op0) == REG && REGNO (op0) == EP_REGNUM)
@@ -1149,7 +1150,8 @@ Saved %d bytes (%d uses of register %s) in function %s, starting as insn %d, end
 			   && GET_CODE (XEXP (addr, 1)) == CONST_INT
 			   && ((INTVAL (XEXP (addr, 1)))
 			       < ep_memory_offset (GET_MODE (*p_mem),
-						   unsignedp)))
+						   unsignedp))
+			   && ((INTVAL (XEXP (addr, 1))) >= 0))
 		    *p_mem = change_address (*p_mem, VOIDmode,
 					     gen_rtx (PLUS, Pmode,
 						      *p_ep, XEXP (addr, 1)));
@@ -1300,7 +1302,8 @@ void v850_reorg (start_insn)
 			   && GET_CODE (XEXP (addr, 0)) == REG
 			   && GET_CODE (XEXP (addr, 1)) == CONST_INT
 			   && ((INTVAL (XEXP (addr, 1)))
-			       < ep_memory_offset (GET_MODE (mem), unsignedp)))
+			       < ep_memory_offset (GET_MODE (mem), unsignedp))
+			   && ((INTVAL (XEXP (addr, 1))) >= 0))
 		    {
 		      short_p = TRUE;
 		      regno = REGNO (XEXP (addr, 0));