*** old/src/share/vm/adlc/formsopt.cpp	Sat Jun  2 20:04:07 2012
--- new/src/share/vm/adlc/formsopt.cpp	Sat Jun  2 20:04:07 2012

*** 1,7 ****
--- 1,7 ----
  /*
!  * Copyright (c) 1998, 2010, Oracle and/or its affiliates. All rights reserved.
!  * Copyright (c) 1998, 2012, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.

*** 64,74 ****
--- 64,74 ----
  
  // Called after parsing the Register block.  Record the register class
  // for spill-slots/regs.
  void RegisterForm::addSpillRegClass() {
    // Stack slots start at the next available even register number.
!   _reg_ctr = (_reg_ctr+1) & ~1;
!   _reg_ctr = (_reg_ctr+7) & ~7;
    const char *rc_name   = "stack_slots";
    RegClass   *reg_class = new RegClass(rc_name);
    reg_class->_stack_or_reg = true;
    _rclasses.addName(rc_name);
    _regClass.Insert(rc_name,reg_class);

*** 148,160 ****
--- 148,165 ----
  
  // Compute RegMask size
  int RegisterForm::RegMask_Size() {
    // Need at least this many words
    int words_for_regs = (_reg_ctr + 31)>>5;
    // Add a few for incoming & outgoing arguments to calls.
+   // The array of Register Mask bits should be large enough to cover
+   // all the machine registers and all parameters that need to be passed
+   // on the stack (stack registers) up to some interesting limit.  Methods
+   // that need more parameters will NOT be compiled.  On Intel, the limit
+   // is something like 90+ parameters.
+   // Add a few (3 words == 96 bits) for incoming & outgoing arguments to calls.
    // Round up to the next doubleword size.
!   return (words_for_regs + 2 + 1) & ~1;
!   return (words_for_regs + 3 + 1) & ~1;
  }
  
  void RegisterForm::dump() {                  // Debug printer
    output(stderr);
  }