rs6000: Delete UNSPEC_MV_CR_OV.

This isn't used since 2018.  (It's a remnant of paired single support).


	* config/rs6000/rs6000.md (unspec): Delete UNSPEC_MV_CR_OV.

From-SVN: r275477

gcc/ChangeLog

 2019-09-06  Segher Boessenkool  <segher@kernel.crashing.org>
 
+	* config/rs6000/rs6000.md (unspec): Delete UNSPEC_MV_CR_OV.
+
+2019-09-06  Segher Boessenkool  <segher@kernel.crashing.org>
+
 	* config/rs6000/rs6000.c (rs6000_rtx_costs) <case UNSPEC>: Delete.
 	* config/rs6000/rs6000.md (unspec): Delete UNSPEC_FRSP.
 

gcc/config/rs6000/rs6000.md

@@ -63,7 +63,6 @@
    UNSPEC_TOC			; address of the TOC (more-or-less)
    UNSPEC_TOCSLOT		; offset from r1 of toc pointer save slot
    UNSPEC_MOVSI_GOT
-   UNSPEC_MV_CR_OV		; move_from_CR_ov_bit
    UNSPEC_FCTIWZ
    UNSPEC_FRIM
    UNSPEC_FRIN