rs6000-builtin.def (rs6000_speculation_barrier): Rename to ppc_speculation_barrier.

rs6000-builtin.def (rs6000_speculation_barrier): Rename to ppc_speculation_barrier.

[gcc]

2018-03-05  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

	* config/rs6000/rs6000-builtin.def (rs6000_speculation_barrier):
	Rename to ppc_speculation_barrier.
	* config/rs6000/rs6000.c (rs6000_init_builtins): Rename builtin to
	__builtin_ppc_speculation_barrier.

[gcc/testsuite]

2018-03-05  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

	* gcc.target/powerpc/spec-barr-1.c: Change called function name to
	__builtin_ppc_speculation_barrier.

From-SVN: r258268