src/share/vm/oops/methodData.cpp

*** 203,219 ****
  }
  
  int TypeEntriesAtCall::compute_cell_count(BytecodeStream* stream) {
    assert(Bytecodes::is_invoke(stream->code()), "should be invoke");
    assert(TypeStackSlotEntries::per_arg_count() > ReturnTypeEntry::static_cell_count(), "code to test for arguments/results broken");
!   Bytecode_invoke inv(stream->method(), stream->bci());
    int args_cell = 0;
!   if (arguments_profiling_enabled()) {
      args_cell = TypeStackSlotEntries::compute_cell_count(inv.signature(), false, TypeProfileArgsLimit);
    }
    int ret_cell = 0;
!   if (return_profiling_enabled() && (inv.result_type() == T_OBJECT || inv.result_type() == T_ARRAY)) {
      ret_cell = ReturnTypeEntry::static_cell_count();
    }
    int header_cell = 0;
    if (args_cell + ret_cell > 0) {
      header_cell = header_cell_count();
--- 203,221 ----
  }
  
  int TypeEntriesAtCall::compute_cell_count(BytecodeStream* stream) {
    assert(Bytecodes::is_invoke(stream->code()), "should be invoke");
    assert(TypeStackSlotEntries::per_arg_count() > ReturnTypeEntry::static_cell_count(), "code to test for arguments/results broken");
!   const methodHandle m = stream->method();
!   int bci = stream->bci();
!   Bytecode_invoke inv(m, bci);
    int args_cell = 0;
!   if (MethodData::profile_arguments_for_invoke(m, bci)) {
      args_cell = TypeStackSlotEntries::compute_cell_count(inv.signature(), false, TypeProfileArgsLimit);
    }
    int ret_cell = 0;
!   if (MethodData::profile_return_for_invoke(m, bci) && (inv.result_type() == T_OBJECT || inv.result_type() == T_ARRAY)) {
      ret_cell = ReturnTypeEntry::static_cell_count();
    }
    int header_cell = 0;
    if (args_cell + ret_cell > 0) {
      header_cell = header_cell_count();
*** 1523,1532 ****
--- 1525,1546 ----
  
    Bytecode_invoke inv(m , bci);
    return inv.is_invokedynamic() || inv.is_invokehandle();
  }
  
+ bool MethodData::profile_unsafe(const methodHandle& m, int bci) {
+   Bytecode_invoke inv(m , bci);
+   if (inv.is_invokevirtual() && inv.klass() == vmSymbols::jdk_internal_misc_Unsafe()) {
+     ResourceMark rm;
+     char* name = inv.name()->as_C_string();
+     if (!strncmp(name, "get", 3) || !strncmp(name, "put", 3)) {
+       return true;
+     }
+   }
+   return false;
+ }
+ 
  int MethodData::profile_arguments_flag() {
    return TypeProfileLevel % 10;
  }
  
  bool MethodData::profile_arguments() {
*** 1548,1557 ****
--- 1562,1575 ----
  
    if (profile_all_arguments()) {
      return true;
    }
  
+   if (profile_unsafe(m, bci)) {
+     return true;
+   }
+ 
    assert(profile_arguments_jsr292_only(), "inconsistent");
    return profile_jsr292(m, bci);
  }
  
  int MethodData::profile_return_flag() {