1 /*
2 * Copyright (c) 1999, 2025, 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.
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23 */
24
25 #ifndef SHARE_C1_C1_COMPILATION_HPP
26 #define SHARE_C1_C1_COMPILATION_HPP
27
28 #include "ci/ciEnv.hpp"
29 #include "ci/ciMethodData.hpp"
30 #include "code/exceptionHandlerTable.hpp"
31 #include "compiler/compiler_globals.hpp"
32 #include "compiler/compilerDefinitions.inline.hpp"
33 #include "compiler/compilerDirectives.hpp"
34 #include "runtime/deoptimization.hpp"
35 #include "runtime/sharedRuntime.hpp"
36
37 class CompilationFailureInfo;
38 class CompilationResourceObj;
39 class XHandlers;
40 class ExceptionInfo;
41 class DebugInformationRecorder;
42 class FrameMap;
43 class IR;
44 class IRScope;
45 class Instruction;
46 class LinearScan;
47 class OopMap;
48 class LIR_Emitter;
49 class LIR_Assembler;
50 class CodeEmitInfo;
51 class ciEnv;
52 class ciMethod;
53 class ValueStack;
54 class C1_MacroAssembler;
55 class CFGPrinter;
56 class CFGPrinterOutput;
57
58 typedef GrowableArray<BasicType> BasicTypeArray;
59 typedef GrowableArray<BasicType> BasicTypeList;
60 typedef GrowableArray<ExceptionInfo*> ExceptionInfoList;
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 DirectiveSet* _directive;
71 ciEnv* _env;
72 CompileLog* _log;
73 ciMethod* _method;
74 int _osr_bci;
75 IR* _hir;
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 _has_irreducible_loops;
82 bool _would_profile;
83 bool _has_reserved_stack_access;
84 bool _has_monitors; // Fastpath monitors detection for Continuations
85 bool _has_scoped_access; // For shared scope closure
86 bool _install_code;
87 const char* _bailout_msg;
88 CompilationFailureInfo* _first_failure_details; // Details for the first failure happening during compilation
89 bool _oom;
90 ExceptionInfoList* _exception_info_list;
91 ExceptionHandlerTable _exception_handler_table;
92 ImplicitExceptionTable _implicit_exception_table;
93 LinearScan* _allocator;
94 CodeOffsets _offsets;
95 CodeBuffer _code;
96 bool _has_access_indexed;
97 int _interpreter_frame_size; // Stack space needed in case of a deoptimization
98 CompiledEntrySignature _compiled_entry_signature;
99 int _immediate_oops_patched;
100
101 // compilation helpers
102 void initialize();
103 void build_hir();
104 void emit_lir();
105
106 void emit_code_epilog(LIR_Assembler* assembler);
107 int emit_code_body();
108
109 int compile_java_method();
110 void install_code(int frame_size);
111 void compile_method();
112
113 void generate_exception_handler_table();
114
115 ExceptionInfoList* exception_info_list() const { return _exception_info_list; }
116 ExceptionHandlerTable* exception_handler_table() { return &_exception_handler_table; }
117
118 void set_allocator(LinearScan* allocator) { _allocator = allocator; }
119
120 Instruction* _current_instruction; // the instruction currently being processed
121 #ifndef PRODUCT
122 Instruction* _last_instruction_printed; // the last instruction printed during traversal
123 CFGPrinterOutput* _cfg_printer_output;
124 #endif // PRODUCT
125
126 public:
127 // creation
128 Compilation(AbstractCompiler* compiler, ciEnv* env, ciMethod* method,
129 int osr_bci, BufferBlob* buffer_blob, bool install_code, DirectiveSet* directive);
130 ~Compilation();
131
132
133 static Compilation* current() {
134 return (Compilation*) ciEnv::current()->compiler_data();
135 }
136
137 // accessors
138 ciEnv* env() const { return _env; }
139 DirectiveSet* directive() const { return _directive; }
140 CompileLog* log() const { return _log; }
141 AbstractCompiler* compiler() const { return _compiler; }
142 bool has_exception_handlers() const { return _has_exception_handlers; }
143 bool has_fpu_code() const { return _has_fpu_code; }
144 bool has_unsafe_access() const { return _has_unsafe_access; }
145 bool has_monitors() const { return _has_monitors; }
146 bool has_scoped_access() const { return _has_scoped_access; }
147 bool has_irreducible_loops() const { return _has_irreducible_loops; }
148 int max_vector_size() const { return 0; }
149 ciMethod* method() const { return _method; }
150 int osr_bci() const { return _osr_bci; }
151 bool is_osr_compile() const { return osr_bci() >= 0; }
152 IR* hir() const { return _hir; }
153 FrameMap* frame_map() const { return _frame_map; }
154 CodeBuffer* code() { return &_code; }
155 C1_MacroAssembler* masm() const { return _masm; }
156 CodeOffsets* offsets() { return &_offsets; }
157 Arena* arena() { return _arena; }
158 bool has_access_indexed() { return _has_access_indexed; }
159 bool should_install_code() { return _install_code; }
160 LinearScan* allocator() { return _allocator; }
161
162 // Instruction ids
163 int get_next_id() { return _next_id++; }
164 int number_of_instructions() const { return _next_id; }
165
166 // BlockBegin ids
167 int get_next_block_id() { return _next_block_id++; }
168 int number_of_blocks() const { return _next_block_id; }
169
170 // setters
171 void set_has_exception_handlers(bool f) { _has_exception_handlers = f; }
172 void set_has_fpu_code(bool f) { _has_fpu_code = f; }
173 void set_has_unsafe_access(bool f) { _has_unsafe_access = f; }
174 void set_has_irreducible_loops(bool f) { _has_irreducible_loops = f; }
175 void set_would_profile(bool f) { _would_profile = f; }
176 void set_has_access_indexed(bool f) { _has_access_indexed = f; }
177 void set_has_monitors(bool f) { _has_monitors = f; }
178 void set_has_scoped_access(bool f) { _has_scoped_access = f; }
179 // Add a set of exception handlers covering the given PC offset
180 void add_exception_handlers_for_pco(int pco, XHandlers* exception_handlers);
181 // Statistics gathering
182 void notice_inlined_method(ciMethod* method);
183
184 bool has_reserved_stack_access() const { return _has_reserved_stack_access; }
185 void set_has_reserved_stack_access(bool z) { _has_reserved_stack_access = z; }
186
187 DebugInformationRecorder* debug_info_recorder() const; // = _env->debug_info();
188 Dependencies* dependency_recorder() const; // = _env->dependencies()
189 ImplicitExceptionTable* implicit_exception_table() { return &_implicit_exception_table; }
190
191 Instruction* current_instruction() const { return _current_instruction; }
192 Instruction* set_current_instruction(Instruction* instr) {
193 Instruction* previous = _current_instruction;
194 _current_instruction = instr;
195 return previous;
196 }
197
198 #ifndef PRODUCT
199 void maybe_print_current_instruction();
200 CFGPrinterOutput* cfg_printer_output() {
201 guarantee(_cfg_printer_output != nullptr, "CFG printer output not initialized");
202 return _cfg_printer_output;
203 }
204 #endif // PRODUCT
205
206 // MemLimit handling
207 bool oom() const { return _oom; }
208 void set_oom() { _oom = true; }
209
210 // error handling
211 void bailout(const char* msg);
212 bool bailed_out() const { return _bailout_msg != nullptr; }
213 const char* bailout_msg() const { return _bailout_msg; }
214 const CompilationFailureInfo* first_failure_details() const { return _first_failure_details; }
215
216 const static uint desired_max_code_buffer_size = 64*K * wordSize;
217 const static uint desired_max_constant_size = desired_max_code_buffer_size / 10;
218
219 static bool setup_code_buffer(CodeBuffer* cb, int call_stub_estimate);
220
221 // timers
222 static void print_timers();
223
224 bool is_profiling() {
225 return env()->comp_level() == CompLevel_full_profile ||
226 env()->comp_level() == CompLevel_limited_profile;
227 }
228
229 // Helpers for generation of profile information
230 bool profile_branches() {
231 return env()->comp_level() == CompLevel_full_profile &&
232 C1UpdateMethodData && C1ProfileBranches;
233 }
234 bool profile_calls() {
235 return env()->comp_level() == CompLevel_full_profile &&
236 C1UpdateMethodData && C1ProfileCalls;
237 }
238 bool profile_inlined_calls() {
239 return profile_calls() && C1ProfileInlinedCalls;
240 }
241 bool profile_checkcasts() {
242 return env()->comp_level() == CompLevel_full_profile &&
243 C1UpdateMethodData && C1ProfileCheckcasts;
244 }
245 bool profile_parameters() {
246 return env()->comp_level() == CompLevel_full_profile &&
247 C1UpdateMethodData && MethodData::profile_parameters();
248 }
249 bool profile_arguments() {
250 return env()->comp_level() == CompLevel_full_profile &&
251 C1UpdateMethodData && MethodData::profile_arguments();
252 }
253 bool profile_return() {
254 return env()->comp_level() == CompLevel_full_profile &&
255 C1UpdateMethodData && MethodData::profile_return();
256 }
257 bool profile_array_accesses() {
258 return env()->comp_level() == CompLevel_full_profile &&
259 C1UpdateMethodData;
260 }
261
262 // will compilation make optimistic assumptions that might lead to
263 // deoptimization and that the runtime will account for?
264 bool is_optimistic() {
265 return CompilerConfig::is_c1_only_no_jvmci() && !is_profiling() &&
266 (RangeCheckElimination || UseLoopInvariantCodeMotion) &&
267 method()->method_data()->trap_count(Deoptimization::Reason_none) == 0;
268 }
269
270 ciKlass* cha_exact_type(ciType* type);
271
272 // Dump inlining replay data to the stream.
273 void dump_inline_data(outputStream* out) { /* do nothing now */ }
274
275 // How much stack space would the interpreter need in case of a
276 // deoptimization (worst case)
277 void update_interpreter_frame_size(int size) {
278 if (_interpreter_frame_size < size) {
279 _interpreter_frame_size = size;
280 }
281 }
282
283 int interpreter_frame_size() const {
284 return _interpreter_frame_size;
285 }
286
287 const CompiledEntrySignature* compiled_entry_signature() const {
288 return &_compiled_entry_signature;
289 }
290 bool needs_stack_repair() const {
291 return compiled_entry_signature()->c1_needs_stack_repair();
292 }
293 };
294
295
296 // Macro definitions for unified bailout-support
297 // The methods bailout() and bailed_out() are present in all classes
298 // that might bailout, but forward all calls to Compilation
299 #define BAILOUT(msg) { bailout(msg); return; }
300 #define BAILOUT_(msg, res) { bailout(msg); return res; }
301
302 #define CHECK_BAILOUT() { if (bailed_out()) return; }
303 #define CHECK_BAILOUT_(res) { if (bailed_out()) return res; }
304
305 // BAILOUT check with reset of bound labels
306 #define CHECK_BAILOUT1(l1) { if (bailed_out()) { l1.reset(); return; } }
307 #define CHECK_BAILOUT2(l1, l2) { if (bailed_out()) { l1.reset(); l2.reset(); return; } }
308 #define CHECK_BAILOUT3(l1, l2, l3) { if (bailed_out()) { l1.reset(); l2.reset(); l3.reset(); return; } }
309
310
311 class InstructionMark: public StackObj {
312 private:
313 Compilation* _compilation;
314 Instruction* _previous;
315
316 public:
317 InstructionMark(Compilation* compilation, Instruction* instr) {
318 _compilation = compilation;
319 _previous = _compilation->set_current_instruction(instr);
320 }
321 ~InstructionMark() {
322 _compilation->set_current_instruction(_previous);
323 }
324 };
325
326
327 //----------------------------------------------------------------------
328 // Base class for objects allocated by the compiler in the compilation arena
329 class CompilationResourceObj {
330 public:
331 void* operator new(size_t size) throw() { return Compilation::current()->arena()->Amalloc(size); }
332 void* operator new(size_t size, Arena* arena) throw() {
333 return arena->Amalloc(size);
334 }
335 void operator delete(void* p) {} // nothing to do
336
337 #ifndef PRODUCT
338 // Printing support
339 void print() const;
340 virtual void print_on(outputStream* st) const;
341 #endif
342 };
343
344
345 //----------------------------------------------------------------------
346 // Class for aggregating exception handler information.
347
348 // Effectively extends XHandlers class with PC offset of
349 // potentially exception-throwing instruction.
350 // This class is used at the end of the compilation to build the
351 // ExceptionHandlerTable.
352 class ExceptionInfo: public CompilationResourceObj {
353 private:
354 int _pco; // PC of potentially exception-throwing instruction
355 XHandlers* _exception_handlers; // flat list of exception handlers covering this PC
356
357 public:
358 ExceptionInfo(int pco, XHandlers* exception_handlers)
359 : _pco(pco)
360 , _exception_handlers(exception_handlers)
361 { }
362
363 int pco() { return _pco; }
364 XHandlers* exception_handlers() { return _exception_handlers; }
365 };
366
367 #endif // SHARE_C1_C1_COMPILATION_HPP