1 /*
 2  * Copyright (c) 1999, 2023, 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
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17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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24 
25 #ifndef SHARE_OPTO_C2COMPILER_HPP
26 #define SHARE_OPTO_C2COMPILER_HPP
27 
28 #include "compiler/abstractCompiler.hpp"
29 #include "opto/output.hpp"
30 
31 class C2Compiler : public AbstractCompiler {
32  private:
33   static bool init_c2_runtime();
34 
35 public:
36   C2Compiler() : AbstractCompiler(compiler_c2) {}
37 
38   // Name
39   const char *name() { return "C2"; }
40   void initialize();
41 
42   // Compilation entry point for methods
43   void compile_method(ciEnv* env,
44                       ciMethod* target,
45                       int entry_bci,
46                       bool install_code,
47                       DirectiveSet* directive);
48 
49   // sentinel value used to trigger backtracking in compile_method().
50   static const char* retry_no_subsuming_loads();
51   static const char* retry_no_escape_analysis();
52   static const char* retry_no_iterative_escape_analysis();
53   static const char* retry_no_reduce_allocation_merges();
54   static const char* retry_no_locks_coarsening();
55   static const char* retry_no_clinit_barriers();
56   static const char* retry_no_superword();
57 
58   // Print compilation timers and statistics
59   void print_timers();
60 
61   // Return true if the intrinsification of a method supported by the compiler
62   // assuming a non-virtual dispatch. (A virtual dispatch is
63   // possible for only a limited set of available intrinsics whereas
64   // a non-virtual dispatch is possible for all available intrinsics.)
65   // Return false otherwise.
66   virtual bool is_intrinsic_supported(const methodHandle& method);
67 
68   // Return true if the intrinsic `id` is supported by C2
69   static bool is_intrinsic_supported(vmIntrinsics::ID id);
70   // Initial size of the code buffer (may be increased at runtime)
71   static int initial_code_buffer_size(int const_size = initial_const_capacity);
72 };
73 
74 #endif // SHARE_OPTO_C2COMPILER_HPP