src/share/vm/ci/ciMethod.cpp

rev 6132 : 8032410: compiler/uncommontrap/TestStackBangRbp.java times out on Solaris-Sparc V9
Summary: make compiled code bang the stack by the worst case size of the interpreter frame at deoptimization points.
Reviewed-by:
rev 6133 : [mq]: newstackbang-reviews

*** 78,87 ****
--- 78,88 ----
    _max_stack          = h_m()->max_stack();
    _max_locals         = h_m()->max_locals();
    _code_size          = h_m()->code_size();
    _intrinsic_id       = h_m()->intrinsic_id();
    _handler_count      = h_m()->exception_table_length();
+   _size_of_parameters = h_m()->size_of_parameters();
    _uses_monitors      = h_m()->access_flags().has_monitor_bytecodes();
    _balanced_monitors  = !_uses_monitors || h_m()->access_flags().is_monitor_matching();
    _is_c1_compilable   = !h_m()->is_not_c1_compilable();
    _is_c2_compilable   = !h_m()->is_not_c2_compilable();
    // Lazy fields, filled in on demand.  Require allocation.
*** 875,884 ****
--- 876,906 ----
    iter.reset_to_bci(bci);
    iter.next();
    return iter.get_method(will_link, declared_signature);
  }
  
+ // How much stack slots is this invoke going to add or remove?
+ int ciMethod::get_stack_effect_at_invoke(int bci, Bytecodes::Code code, int& inputs) {
+   assert(Bytecodes::is_invoke(code), "not an invoke");
+   bool ignored_will_link;
+   ciSignature* declared_signature = NULL;
+   ciMethod* ignored_callee = get_method_at_bci(bci, ignored_will_link, &declared_signature);
+   assert(declared_signature != NULL, "cannot be null");
+   inputs   = declared_signature->arg_size_for_bc(code);
+   int size = declared_signature->return_type()->size();
+   return size - inputs;
+ }
+ 
+ int ciMethod::get_stack_effect_if_at_invoke(int bci) {
+   Bytecodes::Code code = java_code_at_bci(bci);
+   if (Bytecodes::is_invoke(code)) {
+     int ignored = 0;
+     return get_stack_effect_at_invoke(bci, code, ignored);
+   }
+   return 0;
+ }
+ 
  // ------------------------------------------------------------------
  // Adjust a CounterData count to be commensurate with
  // interpreter_invocation_count.  If the MDO exists for
  // only 25% of the time the method exists, then the
  // counts in the MDO should be scaled by 4X, so that