src/hotspot/share/opto/output.cpp

@@ -223,83 +223,17 @@
    }
  #endif
  
  };
  
- volatile int C2SafepointPollStubTable::_stub_size = 0;
- 
- Label& C2SafepointPollStubTable::add_safepoint(uintptr_t safepoint_offset) {
-   C2SafepointPollStub* entry = new (Compile::current()->comp_arena()) C2SafepointPollStub(safepoint_offset);
-   _safepoints.append(entry);
-   return entry->_stub_label;
- }
- 
- void C2SafepointPollStubTable::emit(CodeBuffer& cb) {
-   MacroAssembler masm(&cb);
-   for (int i = _safepoints.length() - 1; i >= 0; i--) {
-     // Make sure there is enough space in the code buffer
-     if (cb.insts()->maybe_expand_to_ensure_remaining(PhaseOutput::MAX_inst_size) && cb.blob() == NULL) {
-       ciEnv::current()->record_failure("CodeCache is full");
-       return;
-     }
- 
-     C2SafepointPollStub* entry = _safepoints.at(i);
-     emit_stub(masm, entry);
-   }
- }
- 
- int C2SafepointPollStubTable::stub_size_lazy() const {
-   int size = Atomic::load(&_stub_size);
- 
-   if (size != 0) {
-     return size;
-   }
- 
-   Compile* const C = Compile::current();
-   BufferBlob* const blob = C->output()->scratch_buffer_blob();
-   CodeBuffer cb(blob->content_begin(), C->output()->scratch_buffer_code_size());
-   MacroAssembler masm(&cb);
-   C2SafepointPollStub* entry = _safepoints.at(0);
-   emit_stub(masm, entry);
-   size += cb.insts_size();
- 
-   Atomic::store(&_stub_size, size);
- 
-   return size;
- }
- 
- int C2SafepointPollStubTable::estimate_stub_size() const {
-   if (_safepoints.length() == 0) {
-     return 0;
-   }
- 
-   int result = stub_size_lazy() * _safepoints.length();
- 
- #ifdef ASSERT
-   Compile* const C = Compile::current();
-   BufferBlob* const blob = C->output()->scratch_buffer_blob();
-   int size = 0;
- 
-   for (int i = _safepoints.length() - 1; i >= 0; i--) {
-     CodeBuffer cb(blob->content_begin(), C->output()->scratch_buffer_code_size());
-     MacroAssembler masm(&cb);
-     C2SafepointPollStub* entry = _safepoints.at(i);
-     emit_stub(masm, entry);
-     size += cb.insts_size();
-   }
-   assert(size == result, "stubs should not have variable size");
- #endif
- 
-   return result;
- }
- 
  PhaseOutput::PhaseOutput()
    : Phase(Phase::Output),
      _code_buffer("Compile::Fill_buffer"),
      _first_block_size(0),
      _handler_table(),
      _inc_table(),
+     _stub_list(),
      _oop_map_set(nullptr),
      _scratch_buffer_blob(nullptr),
      _scratch_locs_memory(nullptr),
      _scratch_const_size(-1),
      _in_scratch_emit_size(false),

@@ -1311,11 +1245,10 @@
  
    int pad_req   = NativeCall::instruction_size;
  
    BarrierSetC2* bs = BarrierSet::barrier_set()->barrier_set_c2();
    stub_req += bs->estimate_stub_size();
-   stub_req += safepoint_poll_table()->estimate_stub_size();
  
    // nmethod and CodeBuffer count stubs & constants as part of method's code.
    // class HandlerImpl is platform-specific and defined in the *.ad files.
    int exception_handler_req = HandlerImpl::size_exception_handler() + MAX_stubs_size; // add marginal slop for handler
    int deopt_handler_req     = HandlerImpl::size_deopt_handler()     + MAX_stubs_size; // add marginal slop for handler

@@ -1818,12 +1751,12 @@
  
    BarrierSetC2* bs = BarrierSet::barrier_set()->barrier_set_c2();
    bs->emit_stubs(*cb);
    if (C->failing())  return;
  
-   // Fill in stubs for calling the runtime from safepoint polls.
-   safepoint_poll_table()->emit(*cb);
+   // Fill in stubs.
+   _stub_list.emit(*cb);
    if (C->failing())  return;
  
  #ifndef PRODUCT
    // Information on the size of the method, without the extraneous code
    Scheduling::increment_method_size(cb->insts_size());