Add dg-require to existing powerpc/pr93122.c test

[will schmidt]

Add dg-require to existing pr93122.c test
    
Hi,
  This test (gcc.target/powerpc/pr93122.c) uses the
-mcpu=future option.  It should also ensure the
target can support the same.
Thus, add a dg-requires clause to indicate
a future target is supported on the platform.

Sniff tested successfully.  (mostly obvious).

OK for master?

Thanks
-Will


2020-03-03  Will Schmidt  <will_schm...@vnet.ibm.com>

testsuite/

        * gcc.target/powerpc/pr93122.c: Add dg-require.

diff --git a/gcc/testsuite/gcc.target/powerpc/pr93122.c 
b/gcc/testsuite/gcc.target/powerpc/pr93122.c
index 701711a..a440a05 100644
--- a/gcc/testsuite/gcc.target/powerpc/pr93122.c
+++ b/gcc/testsuite/gcc.target/powerpc/pr93122.c
@@ -1,6 +1,7 @@
 /* PR target/93122 */
+/* { dg-require-effective-target powerpc_future_ok } */
 /* { dg-do compile { target lp64 } } */
 /* { dg-options "-fstack-clash-protection -mprefixed -mfuture" } */
 
 void bar (char *);