8255429: Remove C2-based profiling

Reviewed-by: kvn, neliasso, vlivanov

Author: Igor Veresov

src/hotspot/share/opto/compile.cpp

@@ -929,8 +929,6 @@ void Compile::Init(int aliaslevel) {
   set_max_inline_size(MaxInlineSize);
   set_freq_inline_size(FreqInlineSize);
   set_do_scheduling(OptoScheduling);
-  set_do_count_invocations(false);
-  set_do_method_data_update(false);
 
   set_do_vector_loop(false);
 

src/hotspot/share/opto/compile.hpp

@@ -282,8 +282,6 @@ class Compile : public Phase {
   bool                  _do_inlining;           // True if we intend to do inlining
   bool                  _do_scheduling;         // True if we intend to do scheduling
   bool                  _do_freq_based_layout;  // True if we intend to do frequency based block layout
-  bool                  _do_count_invocations;  // True if we generate code to count invocations
-  bool                  _do_method_data_update; // True if we generate code to update MethodData*s
   bool                  _do_vector_loop;        // True if allowed to execute loop in parallel iterations
   bool                  _use_cmove;             // True if CMove should be used without profitability analysis
   bool                  _age_code;              // True if we need to profile code age (decrement the aging counter)
@@ -571,10 +569,6 @@ class Compile : public Phase {
   void          set_do_scheduling(bool z)       { _do_scheduling = z; }
   bool              do_freq_based_layout() const{ return _do_freq_based_layout; }
   void          set_do_freq_based_layout(bool z){ _do_freq_based_layout = z; }
-  bool              do_count_invocations() const{ return _do_count_invocations; }
-  void          set_do_count_invocations(bool z){ _do_count_invocations = z; }
-  bool              do_method_data_update() const { return _do_method_data_update; }
-  void          set_do_method_data_update(bool z) { _do_method_data_update = z; }
   bool              do_vector_loop() const      { return _do_vector_loop; }
   void          set_do_vector_loop(bool z)      { _do_vector_loop = z; }
   bool              use_cmove() const           { return _use_cmove; }

src/hotspot/share/opto/doCall.cpp

@@ -643,10 +643,6 @@ void Parse::do_call() {
     receiver = record_profiled_receiver_for_speculation(receiver);
   }
 
-  // Bump method data counters (We profile *before* the call is made
-  // because exceptions don't return to the call site.)
-  profile_call(receiver);
-
   JVMState* new_jvms = cg->generate(jvms);
   if (new_jvms == NULL) {
     // When inlining attempt fails (e.g., too many arguments),

src/hotspot/share/opto/parse.hpp

@@ -330,8 +330,6 @@ class Parse : public GraphKit {
   bool          _wrote_volatile;     // Did we write a volatile field?
   bool          _wrote_stable;       // Did we write a @Stable field?
   bool          _wrote_fields;       // Did we write any field?
-  bool          _count_invocations;  // update and test invocation counter
-  bool          _method_data_update; // update method data oop
   Node*         _alloc_with_final;   // An allocation node with final field
 
   // Variables which track Java semantics during bytecode parsing:
@@ -377,8 +375,6 @@ class Parse : public GraphKit {
   void      set_wrote_stable(bool z)  { _wrote_stable = z; }
   bool         wrote_fields() const   { return _wrote_fields; }
   void     set_wrote_fields(bool z)   { _wrote_fields = z; }
-  bool          count_invocations() const  { return _count_invocations; }
-  bool          method_data_update() const { return _method_data_update; }
   Node*    alloc_with_final() const   { return _alloc_with_final; }
   void set_alloc_with_final(Node* n)  {
     assert((_alloc_with_final == NULL) || (_alloc_with_final == n), "different init objects?");
@@ -500,9 +496,6 @@ class Parse : public GraphKit {
   // Helper function to uncommon-trap or bailout for non-compilable call-sites
   bool can_not_compile_call_site(ciMethod *dest_method, ciInstanceKlass *klass);
 
-  // Helper function to setup for type-profile based inlining
-  bool prepare_type_profile_inline(ciInstanceKlass* prof_klass, ciMethod* prof_method);
-
   // Helper functions for type checking bytecodes:
   void  do_checkcast();
   void  do_instanceof();
@@ -555,9 +548,9 @@ class Parse : public GraphKit {
   void    maybe_add_predicate_after_if(Block* path);
   IfNode* jump_if_fork_int(Node* a, Node* b, BoolTest::mask mask, float prob, float cnt);
   Node*   jump_if_join(Node* iffalse, Node* iftrue);
-  void    jump_if_true_fork(IfNode *ifNode, int dest_bci_if_true, int prof_table_index, bool unc);
-  void    jump_if_false_fork(IfNode *ifNode, int dest_bci_if_false, int prof_table_index, bool unc);
-  void    jump_if_always_fork(int dest_bci_if_true, int prof_table_index, bool unc);
+  void    jump_if_true_fork(IfNode *ifNode, int dest_bci_if_true, bool unc);
+  void    jump_if_false_fork(IfNode *ifNode, int dest_bci_if_false, bool unc);
+  void    jump_if_always_fork(int dest_bci_if_true, bool unc);
 
   friend class SwitchRange;
   void    do_tableswitch();
@@ -567,23 +560,6 @@ class Parse : public GraphKit {
   void    linear_search_switch_ranges(Node* key_val, SwitchRange*& lo, SwitchRange*& hi);
 
   void decrement_age();
-  // helper functions for methodData style profiling
-  void test_counter_against_threshold(Node* cnt, int limit);
-  void increment_and_test_invocation_counter(int limit);
-  void test_for_osr_md_counter_at(ciMethodData* md, ciProfileData* data, ByteSize offset, int limit);
-  Node* method_data_addressing(ciMethodData* md, ciProfileData* data, ByteSize offset, Node* idx = NULL, uint stride = 0);
-  void increment_md_counter_at(ciMethodData* md, ciProfileData* data, ByteSize offset, Node* idx = NULL, uint stride = 0);
-  void set_md_flag_at(ciMethodData* md, ciProfileData* data, int flag_constant);
-
-  void profile_method_entry();
-  void profile_taken_branch(int target_bci, bool force_update = false);
-  void profile_not_taken_branch(bool force_update = false);
-  void profile_call(Node* receiver);
-  void profile_generic_call();
-  void profile_receiver_type(Node* receiver);
-  void profile_ret(int target_bci);
-  void profile_null_checkcast();
-  void profile_switch_case(int table_index);
 
   // helper function for call statistics
   void count_compiled_calls(bool at_method_entry, bool is_inline) PRODUCT_RETURN;

src/hotspot/share/opto/parse1.cpp

@@ -483,9 +483,6 @@ Parse::Parse(JVMState* caller, ciMethod* parse_method, float expected_uses)
   // Accumulate total sum of decompilations, also.
   C->set_decompile_count(C->decompile_count() + md->decompile_count());
 
-  _count_invocations = C->do_count_invocations();
-  _method_data_update = C->do_method_data_update();
-
   if (log != NULL && method()->has_exception_handlers()) {
     log->elem("observe that='has_exception_handlers'");
   }
@@ -1228,10 +1225,6 @@ void Parse::do_method_entry() {
   // Feed profiling data for parameters to the type system so it can
   // propagate it as speculative types
   record_profiled_parameters_for_speculation();
-
-  if (depth() == 1) {
-    increment_and_test_invocation_counter(Tier2CompileThreshold);
-  }
 }
 
 //------------------------------init_blocks------------------------------------