fix sp as last java frame

Author: offamitkumar

src/hotspot/cpu/s390/macroAssembler_s390.cpp

@@ -3853,19 +3853,8 @@ void MacroAssembler::reset_last_Java_frame(bool allow_relocation) {
 void MacroAssembler::set_top_ijava_frame_at_SP_as_last_Java_frame(Register sp, Register tmp1, bool allow_relocation, Label* jpc) {
   assert_different_registers(sp, tmp1);
 
-  get_PC(tmp1);
   if (jpc == nullptr || jpc->is_bound()) {
     load_const_optimized(tmp1, jpc == nullptr ? pc() : target(*jpc));
-    if (jpc == nullptr) {
-      // We cannot trust that code generated by the C++ compiler saves R14
-      // to z_abi_160.return_pc, because sometimes it spills R14 using stmg at
-      // z_abi_160.gpr14 (e.g. InterpreterRuntime::_new()).
-      // Therefore we load the PC into tmp1 and let set_last_Java_frame() save
-      // it into the frame anchor.
-      get_PC(tmp1);
-    } else {
-      load_const_optimized(tmp1, target(*jpc));
-    }
   } else {
     load_const(tmp1, *jpc);
   }