[PATCH, rs6000] fix vsxcopy test for power9

[Will Schmidt]

Hi,
Noted during review of test results on P9.  The vsxcopy.c test is looking
for lxvd2x, stxvd2x instructions in generated code.  For P9 targets, we will
instead generate lxv, stxv instructions.
Thus, update the test to handle that codegen as well.
Sniff-tested on P9.
OK for trunk?

Thanks,
-Will

[testsuite]
    
2018-02-07  Will Schmidt  <will_schm...@vnet.ibm.com>

        * gcc.target/powerpc/vsxcopy.c: Update scan-assembler stanzas.

diff --git a/gcc/testsuite/gcc.target/powerpc/vsxcopy.c 
b/gcc/testsuite/gcc.target/powerpc/vsxcopy.c
index fbe3c67..f877471 100644
--- a/gcc/testsuite/gcc.target/powerpc/vsxcopy.c
+++ b/gcc/testsuite/gcc.target/powerpc/vsxcopy.c
@@ -1,10 +1,10 @@
 /* { dg-do compile { target { powerpc64*-*-* } } } */
 /* { dg-require-effective-target powerpc_vsx_ok } */
 /* { dg-options "-O1 -mvsx" } */
-/* { dg-final { scan-assembler "lxvd2x" } } */
-/* { dg-final { scan-assembler "stxvd2x" } } */
+/* { dg-final { scan-assembler "lxvd2x|lxv" } } */
+/* { dg-final { scan-assembler "stxvd2x|stxv" } } */
 /* { dg-final { scan-assembler-not "xxpermdi" } } */
 
 typedef float vecf __attribute__ ((vector_size (16)));
 extern vecf j, k;