re PR target/87064 (libgomp.oacc-fortran/reduction-3.f90 fails starting with r263751)

2019-01-30  Bill Schmidt  <wschmidt@linux.ibm.com>

	PR target/87064
	* config/rs6000/vsx.md (*vsx_reduc_<VEC_reduc_name>_v4sf_scalar):
	Disable for little-endian.

From-SVN: r268403

gcc/ChangeLog

+2019-01-30  Bill Schmidt  <wschmidt@linux.ibm.com>
+
+	PR target/87064
+	* config/rs6000/vsx.md (*vsx_reduc_<VEC_reduc_name>_v4sf_scalar):
+	Disable for little-endian.
+
 2019-01-30  Richard Biener  <rguenther@suse.de>
 
 	PR rtl-optimization/89115

gcc/config/rs6000/vsx.md

@@ -4378,7 +4378,7 @@
    (clobber (match_scratch:V4SF 2 "=&wf,&wa"))
    (clobber (match_scratch:V4SF 3 "=&wf,&wa"))
    (clobber (match_scratch:V4SF 4 "=0,0"))]
-  "VECTOR_UNIT_VSX_P (V4SFmode)"
+  "BYTES_BIG_ENDIAN && VECTOR_UNIT_VSX_P (V4SFmode)"
   "#"
   ""
   [(const_int 0)]