Mercurial > hg > truffle
annotate src/share/vm/c1/c1_Compilation.hpp @ 1819:f02a8bbe6ed4
6986046: C1 valuestack cleanup
Summary: fixes an historical oddity in C1 with inlining where all of the expression stacks are kept in the topmost ValueStack instead of being in their respective ValueStacks.
Reviewed-by: never
Contributed-by: Christian Wimmer <cwimmer@uci.edu>
author | roland |
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date | Tue, 29 Dec 2009 19:08:54 +0100 |
parents | d5d065957597 |
children | 42a10fc37986 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 class CompilationResourceObj; | |
26 class XHandlers; | |
27 class ExceptionInfo; | |
28 class DebugInformationRecorder; | |
29 class FrameMap; | |
30 class IR; | |
31 class IRScope; | |
32 class Instruction; | |
33 class LinearScan; | |
34 class OopMap; | |
35 class LIR_Emitter; | |
36 class LIR_Assembler; | |
37 class CodeEmitInfo; | |
38 class ciEnv; | |
39 class ciMethod; | |
40 class ValueStack; | |
41 class LIR_OprDesc; | |
42 class C1_MacroAssembler; | |
43 class CFGPrinter; | |
44 typedef LIR_OprDesc* LIR_Opr; | |
45 | |
46 | |
47 define_array(BasicTypeArray, BasicType) | |
48 define_stack(BasicTypeList, BasicTypeArray) | |
49 | |
50 define_array(ExceptionInfoArray, ExceptionInfo*) | |
51 define_stack(ExceptionInfoList, ExceptionInfoArray) | |
52 | |
53 class Compilation: public StackObj { | |
54 friend class CompilationResourceObj; | |
55 private: | |
56 // compilation specifics | |
1584 | 57 Arena* _arena; |
58 int _next_id; | |
59 int _next_block_id; | |
0 | 60 AbstractCompiler* _compiler; |
61 ciEnv* _env; | |
62 ciMethod* _method; | |
63 int _osr_bci; | |
64 IR* _hir; | |
65 int _max_spills; | |
66 FrameMap* _frame_map; | |
67 C1_MacroAssembler* _masm; | |
68 bool _has_exception_handlers; | |
69 bool _has_fpu_code; | |
70 bool _has_unsafe_access; | |
1783 | 71 bool _would_profile; |
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72 bool _has_method_handle_invokes; // True if this method has MethodHandle invokes. |
0 | 73 const char* _bailout_msg; |
74 ExceptionInfoList* _exception_info_list; | |
75 ExceptionHandlerTable _exception_handler_table; | |
76 ImplicitExceptionTable _implicit_exception_table; | |
77 LinearScan* _allocator; | |
78 CodeOffsets _offsets; | |
79 CodeBuffer _code; | |
80 | |
81 // compilation helpers | |
82 void initialize(); | |
83 void build_hir(); | |
84 void emit_lir(); | |
85 | |
86 void emit_code_epilog(LIR_Assembler* assembler); | |
87 int emit_code_body(); | |
88 | |
89 int compile_java_method(); | |
90 void install_code(int frame_size); | |
91 void compile_method(); | |
92 | |
93 void generate_exception_handler_table(); | |
94 | |
95 ExceptionInfoList* exception_info_list() const { return _exception_info_list; } | |
96 ExceptionHandlerTable* exception_handler_table() { return &_exception_handler_table; } | |
97 | |
98 LinearScan* allocator() { return _allocator; } | |
99 void set_allocator(LinearScan* allocator) { _allocator = allocator; } | |
100 | |
101 Instruction* _current_instruction; // the instruction currently being processed | |
102 #ifndef PRODUCT | |
103 Instruction* _last_instruction_printed; // the last instruction printed during traversal | |
104 #endif // PRODUCT | |
105 | |
106 public: | |
107 // creation | |
1584 | 108 Compilation(AbstractCompiler* compiler, ciEnv* env, ciMethod* method, |
109 int osr_bci, BufferBlob* buffer_blob); | |
0 | 110 ~Compilation(); |
111 | |
1584 | 112 |
113 static Compilation* current() { | |
114 return (Compilation*) ciEnv::current()->compiler_data(); | |
115 } | |
0 | 116 |
117 // accessors | |
118 ciEnv* env() const { return _env; } | |
119 AbstractCompiler* compiler() const { return _compiler; } | |
120 bool has_exception_handlers() const { return _has_exception_handlers; } | |
121 bool has_fpu_code() const { return _has_fpu_code; } | |
122 bool has_unsafe_access() const { return _has_unsafe_access; } | |
123 ciMethod* method() const { return _method; } | |
124 int osr_bci() const { return _osr_bci; } | |
125 bool is_osr_compile() const { return osr_bci() >= 0; } | |
126 IR* hir() const { return _hir; } | |
127 int max_spills() const { return _max_spills; } | |
128 FrameMap* frame_map() const { return _frame_map; } | |
129 CodeBuffer* code() { return &_code; } | |
130 C1_MacroAssembler* masm() const { return _masm; } | |
131 CodeOffsets* offsets() { return &_offsets; } | |
1584 | 132 Arena* arena() { return _arena; } |
133 | |
134 // Instruction ids | |
135 int get_next_id() { return _next_id++; } | |
136 int number_of_instructions() const { return _next_id; } | |
137 | |
138 // BlockBegin ids | |
139 int get_next_block_id() { return _next_block_id++; } | |
140 int number_of_blocks() const { return _next_block_id; } | |
0 | 141 |
142 // setters | |
143 void set_has_exception_handlers(bool f) { _has_exception_handlers = f; } | |
144 void set_has_fpu_code(bool f) { _has_fpu_code = f; } | |
145 void set_has_unsafe_access(bool f) { _has_unsafe_access = f; } | |
1783 | 146 void set_would_profile(bool f) { _would_profile = f; } |
0 | 147 // Add a set of exception handlers covering the given PC offset |
148 void add_exception_handlers_for_pco(int pco, XHandlers* exception_handlers); | |
149 // Statistics gathering | |
150 void notice_inlined_method(ciMethod* method); | |
151 | |
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152 // JSR 292 |
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153 bool has_method_handle_invokes() const { return _has_method_handle_invokes; } |
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154 void set_has_method_handle_invokes(bool z) { _has_method_handle_invokes = z; } |
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155 |
0 | 156 DebugInformationRecorder* debug_info_recorder() const; // = _env->debug_info(); |
157 Dependencies* dependency_recorder() const; // = _env->dependencies() | |
158 ImplicitExceptionTable* implicit_exception_table() { return &_implicit_exception_table; } | |
159 | |
160 Instruction* current_instruction() const { return _current_instruction; } | |
161 Instruction* set_current_instruction(Instruction* instr) { | |
162 Instruction* previous = _current_instruction; | |
163 _current_instruction = instr; | |
164 return previous; | |
165 } | |
166 | |
167 #ifndef PRODUCT | |
168 void maybe_print_current_instruction(); | |
169 #endif // PRODUCT | |
170 | |
171 // error handling | |
172 void bailout(const char* msg); | |
173 bool bailed_out() const { return _bailout_msg != NULL; } | |
174 const char* bailout_msg() const { return _bailout_msg; } | |
175 | |
1584 | 176 static int desired_max_code_buffer_size() { |
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177 #ifndef PPC |
1584 | 178 return (int) NMethodSizeLimit; // default 256K or 512K |
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179 #else |
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180 // conditional branches on PPC are restricted to 16 bit signed |
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181 return MAX2((unsigned int)NMethodSizeLimit,32*K); |
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182 #endif |
1584 | 183 } |
184 static int desired_max_constant_size() { | |
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185 #ifndef PPC |
1584 | 186 return (int) NMethodSizeLimit / 10; // about 25K |
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187 #else |
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188 return (MAX2((unsigned int)NMethodSizeLimit, 32*K)) / 10; |
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189 #endif |
1584 | 190 } |
191 | |
192 static void setup_code_buffer(CodeBuffer* cb, int call_stub_estimate); | |
193 | |
0 | 194 // timers |
195 static void print_timers(); | |
196 | |
197 #ifndef PRODUCT | |
198 // debugging support. | |
199 // produces a file named c1compileonly in the current directory with | |
200 // directives to compile only the current method and it's inlines. | |
201 // The file can be passed to the command line option -XX:Flags=<filename> | |
202 void compile_only_this_method(); | |
203 void compile_only_this_scope(outputStream* st, IRScope* scope); | |
204 void exclude_this_method(); | |
205 #endif // PRODUCT | |
1783 | 206 |
207 bool is_profiling() { | |
208 return env()->comp_level() == CompLevel_full_profile || | |
209 env()->comp_level() == CompLevel_limited_profile; | |
210 } | |
211 bool count_invocations() { return is_profiling(); } | |
212 bool count_backedges() { return is_profiling(); } | |
213 | |
214 // Helpers for generation of profile information | |
215 bool profile_branches() { | |
216 return env()->comp_level() == CompLevel_full_profile && | |
217 C1UpdateMethodData && C1ProfileBranches; | |
218 } | |
219 bool profile_calls() { | |
220 return env()->comp_level() == CompLevel_full_profile && | |
221 C1UpdateMethodData && C1ProfileCalls; | |
222 } | |
223 bool profile_inlined_calls() { | |
224 return profile_calls() && C1ProfileInlinedCalls; | |
225 } | |
226 bool profile_checkcasts() { | |
227 return env()->comp_level() == CompLevel_full_profile && | |
228 C1UpdateMethodData && C1ProfileCheckcasts; | |
229 } | |
0 | 230 }; |
231 | |
232 | |
233 // Macro definitions for unified bailout-support | |
234 // The methods bailout() and bailed_out() are present in all classes | |
235 // that might bailout, but forward all calls to Compilation | |
236 #define BAILOUT(msg) { bailout(msg); return; } | |
237 #define BAILOUT_(msg, res) { bailout(msg); return res; } | |
238 | |
239 #define CHECK_BAILOUT() { if (bailed_out()) return; } | |
240 #define CHECK_BAILOUT_(res) { if (bailed_out()) return res; } | |
241 | |
242 | |
243 class InstructionMark: public StackObj { | |
244 private: | |
245 Compilation* _compilation; | |
246 Instruction* _previous; | |
247 | |
248 public: | |
249 InstructionMark(Compilation* compilation, Instruction* instr) { | |
250 _compilation = compilation; | |
251 _previous = _compilation->set_current_instruction(instr); | |
252 } | |
253 ~InstructionMark() { | |
254 _compilation->set_current_instruction(_previous); | |
255 } | |
256 }; | |
257 | |
258 | |
259 //---------------------------------------------------------------------- | |
260 // Base class for objects allocated by the compiler in the compilation arena | |
261 class CompilationResourceObj ALLOCATION_SUPER_CLASS_SPEC { | |
262 public: | |
1584 | 263 void* operator new(size_t size) { return Compilation::current()->arena()->Amalloc(size); } |
264 void* operator new(size_t size, Arena* arena) { | |
265 return arena->Amalloc(size); | |
266 } | |
0 | 267 void operator delete(void* p) {} // nothing to do |
268 }; | |
269 | |
270 | |
271 //---------------------------------------------------------------------- | |
272 // Class for aggregating exception handler information. | |
273 | |
274 // Effectively extends XHandlers class with PC offset of | |
275 // potentially exception-throwing instruction. | |
276 // This class is used at the end of the compilation to build the | |
277 // ExceptionHandlerTable. | |
278 class ExceptionInfo: public CompilationResourceObj { | |
279 private: | |
280 int _pco; // PC of potentially exception-throwing instruction | |
281 XHandlers* _exception_handlers; // flat list of exception handlers covering this PC | |
282 | |
283 public: | |
284 ExceptionInfo(int pco, XHandlers* exception_handlers) | |
285 : _pco(pco) | |
286 , _exception_handlers(exception_handlers) | |
287 { } | |
288 | |
289 int pco() { return _pco; } | |
290 XHandlers* exception_handlers() { return _exception_handlers; } | |
291 }; |