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comparison: src/share/vm/c1/c1_Compilation.hpp

src/share/vm/c1/c1_Compilation.hpp

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1 /*
2 * Copyright (c) 1999, 2013, 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_C1_C1_COMPILATION_HPP
26 #define SHARE_VM_C1_C1_COMPILATION_HPP
27
28 #include "ci/ciEnv.hpp"
29 #include "ci/ciMethodData.hpp"
30 #include "code/exceptionHandlerTable.hpp"
31 #include "memory/resourceArea.hpp"
32 #include "runtime/deoptimization.hpp"
33
34 class CompilationResourceObj;
35 class XHandlers;
36 class ExceptionInfo;
37 class DebugInformationRecorder;
38 class FrameMap;
39 class IR;
40 class IRScope;
41 class Instruction;
42 class LinearScan;
43 class OopMap;
44 class LIR_Emitter;
45 class LIR_Assembler;
46 class CodeEmitInfo;
47 class ciEnv;
48 class ciMethod;
49 class ValueStack;
50 class LIR_OprDesc;
51 class C1_MacroAssembler;
52 class CFGPrinter;
53 typedef LIR_OprDesc* LIR_Opr;
54
55
56 define_array(BasicTypeArray, BasicType)
57 define_stack(BasicTypeList, BasicTypeArray)
58
59 define_array(ExceptionInfoArray, ExceptionInfo*)
60 define_stack(ExceptionInfoList, ExceptionInfoArray)
61
62 class Compilation: public StackObj {
63 friend class CompilationResourceObj;
64 private:
65 // compilation specifics
66 Arena* _arena;
67 int _next_id;
68 int _next_block_id;
69 AbstractCompiler* _compiler;
70 ciEnv* _env;
71 CompileLog* _log;
72 ciMethod* _method;
73 int _osr_bci;
74 IR* _hir;
75 int _max_spills;
76 FrameMap* _frame_map;
77 C1_MacroAssembler* _masm;
78 bool _has_exception_handlers;
79 bool _has_fpu_code;
80 bool _has_unsafe_access;
81 bool _would_profile;
82 bool _has_method_handle_invokes; // True if this method has MethodHandle invokes.
83 const char* _bailout_msg;
84 ExceptionInfoList* _exception_info_list;
85 ExceptionHandlerTable _exception_handler_table;
86 ImplicitExceptionTable _implicit_exception_table;
87 LinearScan* _allocator;
88 CodeOffsets _offsets;
89 CodeBuffer _code;
90 bool _has_access_indexed;
91 int _interpreter_frame_size; // Stack space needed in case of a deoptimization
92
93 // compilation helpers
94 void initialize();
95 void build_hir();
96 void emit_lir();
97
98 void emit_code_epilog(LIR_Assembler* assembler);
99 int emit_code_body();
100
101 int compile_java_method();
102 void install_code(int frame_size);
103 void compile_method();
104
105 void generate_exception_handler_table();
106
107 ExceptionInfoList* exception_info_list() const { return _exception_info_list; }
108 ExceptionHandlerTable* exception_handler_table() { return &_exception_handler_table; }
109
110 LinearScan* allocator() { return _allocator; }
111 void set_allocator(LinearScan* allocator) { _allocator = allocator; }
112
113 Instruction* _current_instruction; // the instruction currently being processed
114 #ifndef PRODUCT
115 Instruction* _last_instruction_printed; // the last instruction printed during traversal
116 #endif // PRODUCT
117
118 public:
119 // creation
120 Compilation(AbstractCompiler* compiler, ciEnv* env, ciMethod* method,
121 int osr_bci, BufferBlob* buffer_blob);
122 ~Compilation();
123
124
125 static Compilation* current() {
126 return (Compilation*) ciEnv::current()->compiler_data();
127 }
128
129 // accessors
130 ciEnv* env() const { return _env; }
131 CompileLog* log() const { return _log; }
132 AbstractCompiler* compiler() const { return _compiler; }
133 bool has_exception_handlers() const { return _has_exception_handlers; }
134 bool has_fpu_code() const { return _has_fpu_code; }
135 bool has_unsafe_access() const { return _has_unsafe_access; }
136 int max_vector_size() const { return 0; }
137 ciMethod* method() const { return _method; }
138 int osr_bci() const { return _osr_bci; }
139 bool is_osr_compile() const { return osr_bci() >= 0; }
140 IR* hir() const { return _hir; }
141 int max_spills() const { return _max_spills; }
142 FrameMap* frame_map() const { return _frame_map; }
143 CodeBuffer* code() { return &_code; }
144 C1_MacroAssembler* masm() const { return _masm; }
145 CodeOffsets* offsets() { return &_offsets; }
146 Arena* arena() { return _arena; }
147 bool has_access_indexed() { return _has_access_indexed; }
148
149 // Instruction ids
150 int get_next_id() { return _next_id++; }
151 int number_of_instructions() const { return _next_id; }
152
153 // BlockBegin ids
154 int get_next_block_id() { return _next_block_id++; }
155 int number_of_blocks() const { return _next_block_id; }
156
157 // setters
158 void set_has_exception_handlers(bool f) { _has_exception_handlers = f; }
159 void set_has_fpu_code(bool f) { _has_fpu_code = f; }
160 void set_has_unsafe_access(bool f) { _has_unsafe_access = f; }
161 void set_would_profile(bool f) { _would_profile = f; }
162 void set_has_access_indexed(bool f) { _has_access_indexed = f; }
163 // Add a set of exception handlers covering the given PC offset
164 void add_exception_handlers_for_pco(int pco, XHandlers* exception_handlers);
165 // Statistics gathering
166 void notice_inlined_method(ciMethod* method);
167
168 // JSR 292
169 bool has_method_handle_invokes() const { return _has_method_handle_invokes; }
170 void set_has_method_handle_invokes(bool z) { _has_method_handle_invokes = z; }
171
172 DebugInformationRecorder* debug_info_recorder() const; // = _env->debug_info();
173 Dependencies* dependency_recorder() const; // = _env->dependencies()
174 ImplicitExceptionTable* implicit_exception_table() { return &_implicit_exception_table; }
175
176 Instruction* current_instruction() const { return _current_instruction; }
177 Instruction* set_current_instruction(Instruction* instr) {
178 Instruction* previous = _current_instruction;
179 _current_instruction = instr;
180 return previous;
181 }
182
183 #ifndef PRODUCT
184 void maybe_print_current_instruction();
185 #endif // PRODUCT
186
187 // error handling
188 void bailout(const char* msg);
189 bool bailed_out() const { return _bailout_msg != NULL; }
190 const char* bailout_msg() const { return _bailout_msg; }
191
192 static int desired_max_code_buffer_size() {
193 #ifndef PPC
194 return (int) NMethodSizeLimit; // default 256K or 512K
195 #else
196 // conditional branches on PPC are restricted to 16 bit signed
197 return MIN2((unsigned int)NMethodSizeLimit,32*K);
198 #endif
199 }
200 static int desired_max_constant_size() {
201 return desired_max_code_buffer_size() / 10;
202 }
203
204 static bool setup_code_buffer(CodeBuffer* cb, int call_stub_estimate);
205
206 // timers
207 static void print_timers();
208
209 #ifndef PRODUCT
210 // debugging support.
211 // produces a file named c1compileonly in the current directory with
212 // directives to compile only the current method and it's inlines.
213 // The file can be passed to the command line option -XX:Flags=<filename>
214 void compile_only_this_method();
215 void compile_only_this_scope(outputStream* st, IRScope* scope);
216 void exclude_this_method();
217 #endif // PRODUCT
218
219 bool is_profiling() {
220 return env()->comp_level() == CompLevel_full_profile ||
221 env()->comp_level() == CompLevel_limited_profile;
222 }
223 bool count_invocations() { return is_profiling(); }
224 bool count_backedges() { return is_profiling(); }
225
226 // Helpers for generation of profile information
227 bool profile_branches() {
228 return env()->comp_level() == CompLevel_full_profile &&
229 C1UpdateMethodData && C1ProfileBranches;
230 }
231 bool profile_calls() {
232 return env()->comp_level() == CompLevel_full_profile &&
233 C1UpdateMethodData && C1ProfileCalls;
234 }
235 bool profile_inlined_calls() {
236 return profile_calls() && C1ProfileInlinedCalls;
237 }
238 bool profile_checkcasts() {
239 return env()->comp_level() == CompLevel_full_profile &&
240 C1UpdateMethodData && C1ProfileCheckcasts;
241 }
242 bool profile_parameters() {
243 return env()->comp_level() == CompLevel_full_profile &&
244 C1UpdateMethodData && MethodData::profile_parameters();
245 }
246 bool profile_arguments() {
247 return env()->comp_level() == CompLevel_full_profile &&
248 C1UpdateMethodData && MethodData::profile_arguments();
249 }
250 bool profile_return() {
251 return env()->comp_level() == CompLevel_full_profile &&
252 C1UpdateMethodData && MethodData::profile_return();
253 }
254 // will compilation make optimistic assumptions that might lead to
255 // deoptimization and that the runtime will account for?
256 bool is_optimistic() const {
257 return !TieredCompilation &&
258 (RangeCheckElimination || UseLoopInvariantCodeMotion) &&
259 method()->method_data()->trap_count(Deoptimization::Reason_none) == 0;
260 }
261
262 ciKlass* cha_exact_type(ciType* type);
263
264 // Dump inlining replay data to the stream.
265 void dump_inline_data(outputStream* out) { /* do nothing now */ }
266
267 // How much stack space would the interpreter need in case of a
268 // deoptimization (worst case)
269 void update_interpreter_frame_size(int size) {
270 if (_interpreter_frame_size < size) {
271 _interpreter_frame_size = size;
272 }
273 }
274
275 int interpreter_frame_size() const {
276 return _interpreter_frame_size;
277 }
278 };
279
280
281 // Macro definitions for unified bailout-support
282 // The methods bailout() and bailed_out() are present in all classes
283 // that might bailout, but forward all calls to Compilation
284 #define BAILOUT(msg) { bailout(msg); return; }
285 #define BAILOUT_(msg, res) { bailout(msg); return res; }
286
287 #define CHECK_BAILOUT() { if (bailed_out()) return; }
288 #define CHECK_BAILOUT_(res) { if (bailed_out()) return res; }
289
290
291 class InstructionMark: public StackObj {
292 private:
293 Compilation* _compilation;
294 Instruction* _previous;
295
296 public:
297 InstructionMark(Compilation* compilation, Instruction* instr) {
298 _compilation = compilation;
299 _previous = _compilation->set_current_instruction(instr);
300 }
301 ~InstructionMark() {
302 _compilation->set_current_instruction(_previous);
303 }
304 };
305
306
307 //----------------------------------------------------------------------
308 // Base class for objects allocated by the compiler in the compilation arena
309 class CompilationResourceObj ALLOCATION_SUPER_CLASS_SPEC {
310 public:
311 void* operator new(size_t size) throw() { return Compilation::current()->arena()->Amalloc(size); }
312 void* operator new(size_t size, Arena* arena) throw() {
313 return arena->Amalloc(size);
314 }
315 void operator delete(void* p) {} // nothing to do
316 };
317
318
319 //----------------------------------------------------------------------
320 // Class for aggregating exception handler information.
321
322 // Effectively extends XHandlers class with PC offset of
323 // potentially exception-throwing instruction.
324 // This class is used at the end of the compilation to build the
325 // ExceptionHandlerTable.
326 class ExceptionInfo: public CompilationResourceObj {
327 private:
328 int _pco; // PC of potentially exception-throwing instruction
329 XHandlers* _exception_handlers; // flat list of exception handlers covering this PC
330
331 public:
332 ExceptionInfo(int pco, XHandlers* exception_handlers)
333 : _pco(pco)
334 , _exception_handlers(exception_handlers)
335 { }
336
337 int pco() { return _pco; }
338 XHandlers* exception_handlers() { return _exception_handlers; }
339 };
340
341 #endif // SHARE_VM_C1_C1_COMPILATION_HPP

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