[spu, commit] Define TARGET_HAVE_SPECULATION_SAFE_VALUE

The SPU processor is not affected by speculation, so this macro can
safely be defined as speculation_safe_value_not_needed.

gcc/ChangeLog:

	PR target/86807
	* config/spu/spu.c (TARGET_HAVE_SPECULATION_SAFE_VALUE):
	Define to speculation_safe_value_not_needed.

From-SVN: r263335

gcc/ChangeLog

+2018-08-06  Ulrich Weigand  <uweigand@de.ibm.com>
+
+	PR target/86807
+	* config/spu/spu.c (TARGET_HAVE_SPECULATION_SAFE_VALUE):
+	Define to speculation_safe_value_not_needed.
+
 2018-08-06  Jeff Law  <law@redhat.com>
 
 	* reload1.c (forget_old_reloads_1): Adjust CLOBBER_HIGH

gcc/config/spu/spu.c

@@ -7463,6 +7463,9 @@ static const struct attribute_spec spu_attribute_table[] =
 #undef TARGET_CONSTANT_ALIGNMENT
 #define TARGET_CONSTANT_ALIGNMENT spu_constant_alignment
 
+#undef  TARGET_HAVE_SPECULATION_SAFE_VALUE
+#define TARGET_HAVE_SPECULATION_SAFE_VALUE speculation_safe_value_not_needed
+
 struct gcc_target targetm = TARGET_INITIALIZER;
 
 #include "gt-spu.h"