Use vm in sse2_cvtps2pd<mask_name>

sse2_cvtps2pd<mask_name> has

(define_insn "sse2_cvtps2pd<mask_name>"
  [(set (match_operand:V2DF 0 "register_operand" "=v") 
        (float_extend:V2DF
          (vec_select:V2SF
            (match_operand:V4SF 1 "vector_operand" "vBm") 
            (parallel [(const_int 0) (const_int 1)]))))]

The memory operand size is 8 bytes (2 floats).  We should use vm instead
of vBm.

	* config/i386/sse.md (sse2_cvtps2pd<mask_name>): Replace vBm
	with vm.

From-SVN: r232979

gcc/ChangeLog

+2016-01-29  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* config/i386/sse.md (sse2_cvtps2pd<mask_name>): Replace vBm
+	with vm.
+
 2016-01-29  Jonathan Wakely  <jwakely@redhat.com>
 
 	* ginclude/stdarg.h: Test __cplusplus instead of

gcc/config/i386/sse.md

@@ -5464,7 +5464,7 @@
   [(set (match_operand:V2DF 0 "register_operand" "=v")
 	(float_extend:V2DF
 	  (vec_select:V2SF
-	    (match_operand:V4SF 1 "vector_operand" "vBm")
+	    (match_operand:V4SF 1 "vector_operand" "vm")
 	    (parallel [(const_int 0) (const_int 1)]))))]
   "TARGET_SSE2 && <mask_avx512vl_condition>"
   "%vcvtps2pd\t{%1, %0<mask_operand2>|%0<mask_operand2>, %q1}"