src/share/vm/c1/c1_LIRAssembler.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:

*** 188,197 ****
--- 188,204 ----
  
  address LIR_Assembler::pc() const {
    return _masm->pc();
  }
  
+ // To bang the stack of this compiled method we use the stack size
+ // that the interpreter would need in case of a deoptimization. This
+ // removes the need to bang the stack in the deoptimization blob which
+ // in turn simplifies stack overflow handling.
+ int LIR_Assembler::bang_size_in_bytes() const {
+   return MAX2(initial_frame_size_in_bytes(), _compilation->interpreter_frame_size());
+ }
  
  void LIR_Assembler::emit_exception_entries(ExceptionInfoList* info_list) {
    for (int i = 0; i < info_list->length(); i++) {
      XHandlers* handlers = info_list->at(i)->exception_handlers();
  
*** 795,805 ****
    }
  }
  
  
  void LIR_Assembler::build_frame() {
!   _masm->build_frame(initial_frame_size_in_bytes());
  }
  
  
  void LIR_Assembler::roundfp_op(LIR_Opr src, LIR_Opr tmp, LIR_Opr dest, bool pop_fpu_stack) {
    assert((src->is_single_fpu() && dest->is_single_stack()) ||
--- 802,812 ----
    }
  }
  
  
  void LIR_Assembler::build_frame() {
!   _masm->build_frame(initial_frame_size_in_bytes(), bang_size_in_bytes());
  }
  
  
  void LIR_Assembler::roundfp_op(LIR_Opr src, LIR_Opr tmp, LIR_Opr dest, bool pop_fpu_stack) {
    assert((src->is_single_fpu() && dest->is_single_stack()) ||