[090/nnn] poly_int: set_inc_state

[Richard Sandiford]

This trivial patch makes auto-inc-dec.c:set_inc_state take a poly_int64.


2017-10-23  Richard Sandiford  <richard.sandif...@linaro.org>
            Alan Hayward  <alan.hayw...@arm.com>
            David Sherwood  <david.sherw...@arm.com>

gcc/
        * auto-inc-dec.c (set_inc_state): Take the mode size as a poly_int64
        rather than an int.

Index: gcc/auto-inc-dec.c
===================================================================
--- gcc/auto-inc-dec.c  2017-07-27 10:37:54.907033464 +0100
+++ gcc/auto-inc-dec.c  2017-10-23 17:25:36.142940510 +0100
@@ -152,14 +152,14 @@ enum gen_form
 static rtx mem_tmp;
 
 static enum inc_state
-set_inc_state (HOST_WIDE_INT val, int size)
+set_inc_state (HOST_WIDE_INT val, poly_int64 size)
 {
   if (val == 0)
     return INC_ZERO;
   if (val < 0)
-    return (val == -size) ? INC_NEG_SIZE : INC_NEG_ANY;
+    return must_eq (val, -size) ? INC_NEG_SIZE : INC_NEG_ANY;
   else
-    return (val == size) ? INC_POS_SIZE : INC_POS_ANY;
+    return must_eq (val, size) ? INC_POS_SIZE : INC_POS_ANY;
 }
 
 /* The DECISION_TABLE that describes what form, if any, the increment