src/hotspot/share/code/scopeDesc.cpp

rev 60703 : 8227745, 8233915: Enable Escape Analysis for Better Performance in the Presence of JVMTI Agents
Reviewed-by: mdoerr, goetz

*** 29,55 ****
  #include "code/scopeDesc.hpp"
  #include "memory/resourceArea.hpp"
  #include "oops/oop.inline.hpp"
  #include "runtime/handles.inline.hpp"
  
! ScopeDesc::ScopeDesc(const CompiledMethod* code, int decode_offset, int obj_decode_offset, bool reexecute, bool rethrow_exception, bool return_oop) {
    _code          = code;
!   _decode_offset = decode_offset;
    _objects       = decode_object_values(obj_decode_offset);
!   _reexecute     = reexecute;
!   _rethrow_exception = rethrow_exception;
!   _return_oop    = return_oop;
!   decode_body();
! }
! 
! ScopeDesc::ScopeDesc(const CompiledMethod* code, int decode_offset, bool reexecute, bool rethrow_exception, bool return_oop) {
!   _code          = code;
!   _decode_offset = decode_offset;
!   _objects       = decode_object_values(DebugInformationRecorder::serialized_null);
!   _reexecute     = reexecute;
!   _rethrow_exception = rethrow_exception;
!   _return_oop    = return_oop;
    decode_body();
  }
  
  
  void ScopeDesc::initialize(const ScopeDesc* parent, int decode_offset) {
--- 29,48 ----
  #include "code/scopeDesc.hpp"
  #include "memory/resourceArea.hpp"
  #include "oops/oop.inline.hpp"
  #include "runtime/handles.inline.hpp"
  
! ScopeDesc::ScopeDesc(const CompiledMethod* code, PcDesc* pd, bool ignore_objects) {
!   int obj_decode_offset = ignore_objects ? DebugInformationRecorder::serialized_null : pd->obj_decode_offset();
    _code          = code;
!   _decode_offset = pd->scope_decode_offset();
    _objects       = decode_object_values(obj_decode_offset);
!   _reexecute     = pd->should_reexecute();
!   _rethrow_exception = pd->rethrow_exception();
!   _return_oop    = pd->return_oop();
!   _has_ea_local_in_scope = ignore_objects ? false : pd->has_ea_local_in_scope();
!   _arg_escape    = ignore_objects ? false : pd->arg_escape();
    decode_body();
  }
  
  
  void ScopeDesc::initialize(const ScopeDesc* parent, int decode_offset) {
*** 57,66 ****
--- 50,61 ----
    _decode_offset = decode_offset;
    _objects       = parent->_objects;
    _reexecute     = false; //reexecute only applies to the first scope
    _rethrow_exception = false;
    _return_oop    = false;
+   _has_ea_local_in_scope = parent->has_ea_local_in_scope();
+   _arg_escape    = false;
    decode_body();
  }
  
  ScopeDesc::ScopeDesc(const ScopeDesc* parent) {
    initialize(parent, parent->_sender_decode_offset);