src/cpu/ppc/vm/c1_LIRAssembler_ppc.cpp

rev 10271 : 8147844: new method j.l.Runtime.onSpinWait() and the corresponding x86 hotspot instrinsic
Summary: adds c1 & c2 x86 intrinsics for j.l.Runtime.onSpinWait() that utilize the PAUSE instruction
Reviewed-by: iveresov, kvn, vlivanov
Contributed-by: Ivan Krylov <ivan@azul.com>, Yuri Gaevsky <ygaevsky@azul.com>

@@ -2843,10 +2843,13 @@
 
 void LIR_Assembler::membar_storeload() {
   __ membar(Assembler::StoreLoad);
 }
 
+void LIR_Assembler::on_spin_wait() {
+  Unimplemented();
+}
 
 void LIR_Assembler::leal(LIR_Opr addr_opr, LIR_Opr dest) {
   LIR_Address* addr = addr_opr->as_address_ptr();
   assert(addr->scale() == LIR_Address::times_1, "no scaling on this platform");
   if (addr->index()->is_illegal()) {