1 /*
   2  * Copyright (c) 1999, 2014, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #ifndef SHARE_VM_OPTO_C2COMPILER_HPP
  26 #define SHARE_VM_OPTO_C2COMPILER_HPP
  27 
  28 #include "compiler/abstractCompiler.hpp"
  29 
  30 class C2Compiler : public AbstractCompiler {
  31  private:
  32   static bool init_c2_runtime();
  33 
  34 public:
  35   C2Compiler() : AbstractCompiler(c2) {}
  36 
  37   // Name
  38   const char *name() { return "C2"; }
  39   void initialize();
  40 
  41   // Compilation entry point for methods
  42   void compile_method(ciEnv* env,
  43                       ciMethod* target,
  44                       int entry_bci);
  45 
  46   // sentinel value used to trigger backtracking in compile_method().
  47   static const char* retry_no_subsuming_loads();
  48   static const char* retry_no_escape_analysis();
  49   static const char* retry_class_loading_during_parsing();
  50 
  51   // Print compilation timers and statistics
  52   void print_timers();
  53 
  54   // Check the availability of an intrinsic for 'method' given a compilation context.
  55   bool is_intrinsic_available(methodHandle method, methodHandle compilation_context);
  56   // Check the availability of an intrinsic for a 'method' but ignore
  57   // the compilation context.
  58   bool is_intrinsic_available(methodHandle method) {
  59     return is_intrinsic_available(method, NULL);
  60   }
  61 
  62   // Is intrinsification of a method supported by the compiler
  63   // assuming a non-virtual dispatch.
  64   virtual bool is_intrinsic_supported(methodHandle method) {
  65     return is_intrinsic_supported(method, false);
  66   }
  67 
  68   // Check if the C2 compiler supports an intrinsic for 'method'.
  69   virtual bool is_intrinsic_supported(methodHandle method, bool is_virtual);
  70 
  71   // Processing of command-line flags specific to the C1 compiler.
  72   virtual bool is_intrinsic_disabled_by_flag(methodHandle method) {
  73     return is_intrinsic_disabled_by_flag(method, NULL);
  74   }
  75   virtual bool is_intrinsic_disabled_by_flag(methodHandle method, methodHandle compilation_context);
  76 
  77   // Initial size of the code buffer (may be increased at runtime)
  78   static int initial_code_buffer_size();
  79 };
  80 
  81 #endif // SHARE_VM_OPTO_C2COMPILER_HPP