poly_int: emit_inc

This patch changes the LRA emit_inc routine so that it takes
a poly_int64 rather than an int.

2017-12-21  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

gcc/
	* lra-constraints.c (emit_inc): Change inc_amount from an int
	to a poly_int64.

Co-Authored-By: Alan Hayward <alan.hayward@arm.com>
Co-Authored-By: David Sherwood <david.sherwood@arm.com>

From-SVN: r255923

gcc/ChangeLog

@@ -2,6 +2,13 @@
 	    Alan Hayward  <alan.hayward@arm.com>
 	    David Sherwood  <david.sherwood@arm.com>
 
+	* lra-constraints.c (emit_inc): Change inc_amount from an int
+	to a poly_int64.
+
+2017-12-21  Richard Sandiford  <richard.sandiford@linaro.org>
+	    Alan Hayward  <alan.hayward@arm.com>
+	    David Sherwood  <david.sherwood@arm.com>
+
 	* cfgexpand.c (stack_var::size): Change from a HOST_WIDE_INT
 	to a poly_uint64.
 	(add_stack_var, stack_var_cmp, partition_stack_vars)

gcc/lra-constraints.c

@@ -3534,7 +3534,7 @@ process_address (int nop, bool check_only_p,
 
    Return pseudo containing the result.	 */
 static rtx
-emit_inc (enum reg_class new_rclass, rtx in, rtx value, int inc_amount)
+emit_inc (enum reg_class new_rclass, rtx in, rtx value, poly_int64 inc_amount)
 {
   /* REG or MEM to be copied and incremented.  */
   rtx incloc = XEXP (value, 0);
@@ -3562,7 +3562,7 @@ emit_inc (enum reg_class new_rclass, rtx in, rtx value, int inc_amount)
       if (GET_CODE (value) == PRE_DEC || GET_CODE (value) == POST_DEC)
 	inc_amount = -inc_amount;
 
-      inc = GEN_INT (inc_amount);
+      inc = gen_int_mode (inc_amount, GET_MODE (value));
     }
 
   if (! post && REG_P (incloc))