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comparison src/share/vm/c1/c1_Compilation.hpp @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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1 /*
2 * Copyright 1999-2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25 class BlockBegin;
26 class CompilationResourceObj;
27 class XHandlers;
28 class ExceptionInfo;
29 class DebugInformationRecorder;
30 class FrameMap;
31 class IR;
32 class IRScope;
33 class Instruction;
34 class LinearScan;
35 class OopMap;
36 class LIR_Emitter;
37 class LIR_Assembler;
38 class CodeEmitInfo;
39 class ciEnv;
40 class ciMethod;
41 class ValueStack;
42 class LIR_OprDesc;
43 class C1_MacroAssembler;
44 class CFGPrinter;
45 typedef LIR_OprDesc* LIR_Opr;
46
47
48 define_array(BasicTypeArray, BasicType)
49 define_stack(BasicTypeList, BasicTypeArray)
50
51 define_array(ExceptionInfoArray, ExceptionInfo*)
52 define_stack(ExceptionInfoList, ExceptionInfoArray)
53
54 class Compilation: public StackObj {
55 friend class CompilationResourceObj;
56 private:
57
58 static Arena* _arena;
59 static Arena* arena() { return _arena; }
60
61 static Compilation* _compilation;
62
63 private:
64 // compilation specifics
65 AbstractCompiler* _compiler;
66 ciEnv* _env;
67 ciMethod* _method;
68 int _osr_bci;
69 IR* _hir;
70 int _max_spills;
71 FrameMap* _frame_map;
72 C1_MacroAssembler* _masm;
73 bool _needs_debug_information;
74 bool _has_exception_handlers;
75 bool _has_fpu_code;
76 bool _has_unsafe_access;
77 const char* _bailout_msg;
78 ExceptionInfoList* _exception_info_list;
79 ExceptionHandlerTable _exception_handler_table;
80 ImplicitExceptionTable _implicit_exception_table;
81 LinearScan* _allocator;
82 CodeOffsets _offsets;
83 CodeBuffer _code;
84
85 // compilation helpers
86 void initialize();
87 void build_hir();
88 void emit_lir();
89
90 void emit_code_epilog(LIR_Assembler* assembler);
91 int emit_code_body();
92
93 int compile_java_method();
94 void install_code(int frame_size);
95 void compile_method();
96
97 void generate_exception_handler_table();
98
99 ExceptionInfoList* exception_info_list() const { return _exception_info_list; }
100 ExceptionHandlerTable* exception_handler_table() { return &_exception_handler_table; }
101
102 LinearScan* allocator() { return _allocator; }
103 void set_allocator(LinearScan* allocator) { _allocator = allocator; }
104
105 Instruction* _current_instruction; // the instruction currently being processed
106 #ifndef PRODUCT
107 Instruction* _last_instruction_printed; // the last instruction printed during traversal
108 #endif // PRODUCT
109
110 public:
111 // creation
112 Compilation(AbstractCompiler* compiler, ciEnv* env, ciMethod* method, int osr_bci);
113 ~Compilation();
114
115 static Compilation* current_compilation() { return _compilation; }
116
117 // accessors
118 ciEnv* env() const { return _env; }
119 AbstractCompiler* compiler() const { return _compiler; }
120 bool needs_debug_information() const { return _needs_debug_information; }
121 bool has_exception_handlers() const { return _has_exception_handlers; }
122 bool has_fpu_code() const { return _has_fpu_code; }
123 bool has_unsafe_access() const { return _has_unsafe_access; }
124 ciMethod* method() const { return _method; }
125 int osr_bci() const { return _osr_bci; }
126 bool is_osr_compile() const { return osr_bci() >= 0; }
127 IR* hir() const { return _hir; }
128 int max_spills() const { return _max_spills; }
129 FrameMap* frame_map() const { return _frame_map; }
130 CodeBuffer* code() { return &_code; }
131 C1_MacroAssembler* masm() const { return _masm; }
132 CodeOffsets* offsets() { return &_offsets; }
133
134 // setters
135 void set_needs_debug_information(bool f) { _needs_debug_information = f; }
136 void set_has_exception_handlers(bool f) { _has_exception_handlers = f; }
137 void set_has_fpu_code(bool f) { _has_fpu_code = f; }
138 void set_has_unsafe_access(bool f) { _has_unsafe_access = f; }
139 // Add a set of exception handlers covering the given PC offset
140 void add_exception_handlers_for_pco(int pco, XHandlers* exception_handlers);
141 // Statistics gathering
142 void notice_inlined_method(ciMethod* method);
143
144 DebugInformationRecorder* debug_info_recorder() const; // = _env->debug_info();
145 Dependencies* dependency_recorder() const; // = _env->dependencies()
146 ImplicitExceptionTable* implicit_exception_table() { return &_implicit_exception_table; }
147
148 Instruction* current_instruction() const { return _current_instruction; }
149 Instruction* set_current_instruction(Instruction* instr) {
150 Instruction* previous = _current_instruction;
151 _current_instruction = instr;
152 return previous;
153 }
154
155 #ifndef PRODUCT
156 void maybe_print_current_instruction();
157 #endif // PRODUCT
158
159 // error handling
160 void bailout(const char* msg);
161 bool bailed_out() const { return _bailout_msg != NULL; }
162 const char* bailout_msg() const { return _bailout_msg; }
163
164 // timers
165 static void print_timers();
166
167 #ifndef PRODUCT
168 // debugging support.
169 // produces a file named c1compileonly in the current directory with
170 // directives to compile only the current method and it's inlines.
171 // The file can be passed to the command line option -XX:Flags=<filename>
172 void compile_only_this_method();
173 void compile_only_this_scope(outputStream* st, IRScope* scope);
174 void exclude_this_method();
175 #endif // PRODUCT
176 };
177
178
179 // Macro definitions for unified bailout-support
180 // The methods bailout() and bailed_out() are present in all classes
181 // that might bailout, but forward all calls to Compilation
182 #define BAILOUT(msg) { bailout(msg); return; }
183 #define BAILOUT_(msg, res) { bailout(msg); return res; }
184
185 #define CHECK_BAILOUT() { if (bailed_out()) return; }
186 #define CHECK_BAILOUT_(res) { if (bailed_out()) return res; }
187
188
189 class InstructionMark: public StackObj {
190 private:
191 Compilation* _compilation;
192 Instruction* _previous;
193
194 public:
195 InstructionMark(Compilation* compilation, Instruction* instr) {
196 _compilation = compilation;
197 _previous = _compilation->set_current_instruction(instr);
198 }
199 ~InstructionMark() {
200 _compilation->set_current_instruction(_previous);
201 }
202 };
203
204
205 //----------------------------------------------------------------------
206 // Base class for objects allocated by the compiler in the compilation arena
207 class CompilationResourceObj ALLOCATION_SUPER_CLASS_SPEC {
208 public:
209 void* operator new(size_t size) { return Compilation::arena()->Amalloc(size); }
210 void operator delete(void* p) {} // nothing to do
211 };
212
213
214 //----------------------------------------------------------------------
215 // Class for aggregating exception handler information.
216
217 // Effectively extends XHandlers class with PC offset of
218 // potentially exception-throwing instruction.
219 // This class is used at the end of the compilation to build the
220 // ExceptionHandlerTable.
221 class ExceptionInfo: public CompilationResourceObj {
222 private:
223 int _pco; // PC of potentially exception-throwing instruction
224 XHandlers* _exception_handlers; // flat list of exception handlers covering this PC
225
226 public:
227 ExceptionInfo(int pco, XHandlers* exception_handlers)
228 : _pco(pco)
229 , _exception_handlers(exception_handlers)
230 { }
231
232 int pco() { return _pco; }
233 XHandlers* exception_handlers() { return _exception_handlers; }
234 };