(eliminate_regs, case {PRE,POST}_{INC,DEC}): Account for PUSH_ROUNDING.

From-SVN: r4375

gcc/reload1.c

 /* Reload pseudo regs into hard regs for insns that require hard regs.
-   Copyright (C) 1987, 1988, 1989, 1992 Free Software Foundation, Inc.
+   Copyright (C) 1987, 1988, 1989, 1992, 1993 Free Software Foundation, Inc.
 
 This file is part of GNU CC.
 
@@ -2734,10 +2734,17 @@ eliminate_regs (x, mem_mode, insn)
       for (ep = reg_eliminate; ep < &reg_eliminate[NUM_ELIMINABLE_REGS]; ep++)
 	if (ep->to_rtx == XEXP (x, 0))
 	  {
+	    int size = GET_MODE_SIZE (mem_mode);
+
+	    /* If more bytes than MEM_MODE are pushed, account for them.  */
+#ifdef PUSH_ROUNDING
+	    if (ep->to_rtx == stack_pointer_rtx)
+	      size = PUSH_ROUNDING (size);
+#endif
 	    if (code == PRE_DEC || code == POST_DEC)
-	      ep->offset += GET_MODE_SIZE (mem_mode);
+	      ep->offset += size;
 	    else
-	      ep->offset -= GET_MODE_SIZE (mem_mode);
+	      ep->offset -= size;
 	  }
 
       /* Fall through to generic unary operation case.  */