rs6000.md (movsi_from_sf): Adjust code to eliminate doing a 32-bit shift right or...

rs6000.md (movsi_from_sf): Adjust code to eliminate doing a 32-bit shift right or vector extract after...

2017-09-26  Michael Meissner  <meissner@linux.vnet.ibm.com>

	* config/rs6000/rs6000.md (movsi_from_sf): Adjust code to
	eliminate doing a 32-bit shift right or vector extract after doing
	XSCVDPSPN.  Use zero_extendsidi2 instead of p8_mfvsrd_4_disf to
	move the value to the GPRs.
	(movdi_from_sf_zero_ext): Likewise.
	(reload_gpr_from_vsxsf): Likewise.
	(p8_mfvsrd_4_disf): Delete, no longer used.

From-SVN: r253209