Fix up plafform testes in check headers.

Fix up plafform testes in check headers. After a resent GCC change
the previously submitted BMI/BMI2 intrinsic test started to fail
with a warning/error.

[gcc/testsuite]

2017-07-19  Steven Munroe  <munroesj@gcc.gnu.org>

	* gcc.target/powerpc/bmi-check.h (main): Skip unless
	__BUILTIN_CPU_SUPPORTS__ defined.
	* gcc.target/powerpc/bmi2-check.h (main): Skip unless
	__BUILTIN_CPU_SUPPORTS__ defined.

From-SVN: r250362

gcc/testsuite/ChangeLog

+2017-07-19  Steven Munroe  <munroesj@gcc.gnu.org>
+
+	* gcc.target/powerpc/bmi-check.h (main): Skip unless
+	__BUILTIN_CPU_SUPPORTS__ defined.
+	* gcc.target/powerpc/bmi2-check.h (main): Skip unless
+	__BUILTIN_CPU_SUPPORTS__ defined.
+
 2017-07-19  Jakub Jelinek  <jakub@redhat.com>
 
 	PR tree-optimization/81346

gcc/testsuite/gcc.target/powerpc/bmi-check.h

@@ -13,6 +13,7 @@ do_test (void)
 int
 main ()
 {
+#ifdef __BUILTIN_CPU_SUPPORTS__
   /* Need 64-bit for 64-bit longs as single instruction.  */
   if ( __builtin_cpu_supports ("ppc64") )
     {
@@ -25,6 +26,6 @@ main ()
   else
     printf ("SKIPPED\n");
 #endif
-
+#endif /* __BUILTIN_CPU_SUPPORTS__ */
   return 0;
 }

gcc/testsuite/gcc.target/powerpc/bmi2-check.h

@@ -13,6 +13,7 @@ do_test (void)
 int
 main ()
 {
+#ifdef __BUILTIN_CPU_SUPPORTS__
   /* The BMI2 test for pext test requires the Bit Permute doubleword
      (bpermd) instruction added in PowerISA 2.06 along with the VSX
      facility.  So we can test for arch_2_06.  */
@@ -27,7 +28,7 @@ main ()
   else
     printf ("SKIPPED\n");
 #endif
-
+#endif /* __BUILTIN_CPU_SUPPORTS__ */
   return 0;
 }