[committed] Fix POLY_INT_CST/CONST_POLY_INT typo (PR 89631)

[Richard Sandiford]

Tested on aarch64-linux-gnu (with SVE) and x86_64-linux-gnu.
Applied as obvious.

Richard


2019-03-08  Richard Sandiford  <richard.sandif...@arm.com>

gcc/
        PR debug/89631
        * dwarf2cfi.c (dwarf2out_frame_debug_expr): Use CONST_POLY_INT
        instead of POLY_INT_CST.
------------------------------------------------------------------------------

Index: gcc/dwarf2cfi.c
===================================================================
--- gcc/dwarf2cfi.c     2019-03-08 18:15:36.700740351 +0000
+++ gcc/dwarf2cfi.c     2019-03-08 18:17:35.892287413 +0000
@@ -1778,7 +1778,7 @@ dwarf2out_frame_debug_expr (rtx expr)
 
          /* Rule 6 */
        case CONST_INT:
-       case POLY_INT_CST:
+       case CONST_POLY_INT:
          cur_trace->cfa_temp.reg = dwf_regno (dest);
          cur_trace->cfa_temp.offset = rtx_to_poly_int64 (src);
          break;