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.
22 *
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_method_handle_invokes; // True if this method has MethodHandle invokes.
84 bool _has_reserved_stack_access;
85 bool _has_monitors; // Fastpath monitors detection for Continuations
86 bool _has_scoped_access; // For shared scope closure
87 bool _install_code;
88 const char* _bailout_msg;
89 CompilationFailureInfo* _first_failure_details; // Details for the first failure happening during compilation
90 bool _oom;
91 ExceptionInfoList* _exception_info_list;
92 ExceptionHandlerTable _exception_handler_table;
93 ImplicitExceptionTable _implicit_exception_table;
94 LinearScan* _allocator;
95 CodeOffsets _offsets;
96 CodeBuffer _code;
97 bool _has_access_indexed;
98 int _interpreter_frame_size; // Stack space needed in case of a deoptimization
99 CompiledEntrySignature _compiled_entry_signature;
100 int _immediate_oops_patched;
101
102 // compilation helpers
103 void initialize();
104 void build_hir();
105 void emit_lir();
106
107 void emit_code_epilog(LIR_Assembler* assembler);
108 int emit_code_body();
109
110 int compile_java_method();
111 void install_code(int frame_size);
112 void compile_method();
113
114 void generate_exception_handler_table();
115
116 ExceptionInfoList* exception_info_list() const { return _exception_info_list; }
117 ExceptionHandlerTable* exception_handler_table() { return &_exception_handler_table; }
118
119 void set_allocator(LinearScan* allocator) { _allocator = allocator; }
120
121 Instruction* _current_instruction; // the instruction currently being processed
122 #ifndef PRODUCT
123 Instruction* _last_instruction_printed; // the last instruction printed during traversal
124 CFGPrinterOutput* _cfg_printer_output;
125 #endif // PRODUCT
126
127 public:
128 // creation
129 Compilation(AbstractCompiler* compiler, ciEnv* env, ciMethod* method,
130 int osr_bci, BufferBlob* buffer_blob, bool install_code, DirectiveSet* directive);
131 ~Compilation();
132
133
134 static Compilation* current() {
135 return (Compilation*) ciEnv::current()->compiler_data();
136 }
137
138 // accessors
139 ciEnv* env() const { return _env; }
140 DirectiveSet* directive() const { return _directive; }
141 CompileLog* log() const { return _log; }
142 AbstractCompiler* compiler() const { return _compiler; }
143 bool has_exception_handlers() const { return _has_exception_handlers; }
144 bool has_fpu_code() const { return _has_fpu_code; }
145 bool has_unsafe_access() const { return _has_unsafe_access; }
146 bool has_monitors() const { return _has_monitors; }
147 bool has_scoped_access() const { return _has_scoped_access; }
148 bool has_irreducible_loops() const { return _has_irreducible_loops; }
149 int max_vector_size() const { return 0; }
150 ciMethod* method() const { return _method; }
151 int osr_bci() const { return _osr_bci; }
152 bool is_osr_compile() const { return osr_bci() >= 0; }
153 IR* hir() const { return _hir; }
154 FrameMap* frame_map() const { return _frame_map; }
155 CodeBuffer* code() { return &_code; }
156 C1_MacroAssembler* masm() const { return _masm; }
157 CodeOffsets* offsets() { return &_offsets; }
158 Arena* arena() { return _arena; }
159 bool has_access_indexed() { return _has_access_indexed; }
160 bool should_install_code() { return _install_code && InstallMethods; }
161 LinearScan* allocator() { return _allocator; }
162
163 // Instruction ids
164 int get_next_id() { return _next_id++; }
165 int number_of_instructions() const { return _next_id; }
166
167 // BlockBegin ids
168 int get_next_block_id() { return _next_block_id++; }
169 int number_of_blocks() const { return _next_block_id; }
170
171 // setters
172 void set_has_exception_handlers(bool f) { _has_exception_handlers = f; }
173 void set_has_fpu_code(bool f) { _has_fpu_code = f; }
174 void set_has_unsafe_access(bool f) { _has_unsafe_access = f; }
175 void set_has_irreducible_loops(bool f) { _has_irreducible_loops = f; }
176 void set_would_profile(bool f) { _would_profile = f; }
177 void set_has_access_indexed(bool f) { _has_access_indexed = f; }
178 void set_has_monitors(bool f) { _has_monitors = f; }
179 void set_has_scoped_access(bool f) { _has_scoped_access = f; }
180 // Add a set of exception handlers covering the given PC offset
181 void add_exception_handlers_for_pco(int pco, XHandlers* exception_handlers);
182 // Statistics gathering
183 void notice_inlined_method(ciMethod* method);
184
185 // JSR 292
186 bool has_method_handle_invokes() const { return _has_method_handle_invokes; }
187 void set_has_method_handle_invokes(bool z) { _has_method_handle_invokes = z; }
188
189 bool has_reserved_stack_access() const { return _has_reserved_stack_access; }
190 void set_has_reserved_stack_access(bool z) { _has_reserved_stack_access = z; }
191
192 DebugInformationRecorder* debug_info_recorder() const; // = _env->debug_info();
193 Dependencies* dependency_recorder() const; // = _env->dependencies()
194 ImplicitExceptionTable* implicit_exception_table() { return &_implicit_exception_table; }
195
196 Instruction* current_instruction() const { return _current_instruction; }
197 Instruction* set_current_instruction(Instruction* instr) {
198 Instruction* previous = _current_instruction;
199 _current_instruction = instr;
200 return previous;
201 }
202
203 #ifndef PRODUCT
204 void maybe_print_current_instruction();
205 CFGPrinterOutput* cfg_printer_output() {
206 guarantee(_cfg_printer_output != nullptr, "CFG printer output not initialized");
207 return _cfg_printer_output;
208 }
209 #endif // PRODUCT
210
211 // MemLimit handling
212 bool oom() const { return _oom; }
213 void set_oom() { _oom = true; }
214
215 // error handling
216 void bailout(const char* msg);
217 bool bailed_out() const { return _bailout_msg != nullptr; }
218 const char* bailout_msg() const { return _bailout_msg; }
219 const CompilationFailureInfo* first_failure_details() const { return _first_failure_details; }
220
221 static uint desired_max_code_buffer_size() {
222 return (uint)NMethodSizeLimit; // default 64K
223 }
224 static uint desired_max_constant_size() {
225 return desired_max_code_buffer_size() / 10;
226 }
227
228 static bool setup_code_buffer(CodeBuffer* cb, int call_stub_estimate);
229
230 // timers
231 static void print_timers();
232
233 bool is_profiling() {
234 return env()->comp_level() == CompLevel_full_profile ||
235 env()->comp_level() == CompLevel_limited_profile;
236 }
237
238 // Helpers for generation of profile information
239 bool profile_branches() {
240 return env()->comp_level() == CompLevel_full_profile &&
241 C1UpdateMethodData && C1ProfileBranches;
242 }
243 bool profile_calls() {
244 return env()->comp_level() == CompLevel_full_profile &&
245 C1UpdateMethodData && C1ProfileCalls;
246 }
247 bool profile_inlined_calls() {
248 return profile_calls() && C1ProfileInlinedCalls;
249 }
250 bool profile_checkcasts() {
251 return env()->comp_level() == CompLevel_full_profile &&
252 C1UpdateMethodData && C1ProfileCheckcasts;
253 }
254 bool profile_parameters() {
255 return env()->comp_level() == CompLevel_full_profile &&
256 C1UpdateMethodData && MethodData::profile_parameters();
257 }
258 bool profile_arguments() {
259 return env()->comp_level() == CompLevel_full_profile &&
260 C1UpdateMethodData && MethodData::profile_arguments();
261 }
262 bool profile_return() {
263 return env()->comp_level() == CompLevel_full_profile &&
264 C1UpdateMethodData && MethodData::profile_return();
265 }
266 bool profile_array_accesses() {
267 return env()->comp_level() == CompLevel_full_profile &&
268 C1UpdateMethodData;
269 }
270
271 // will compilation make optimistic assumptions that might lead to
272 // deoptimization and that the runtime will account for?
273 bool is_optimistic() {
274 return CompilerConfig::is_c1_only_no_jvmci() && !is_profiling() &&
275 (RangeCheckElimination || UseLoopInvariantCodeMotion) &&
276 method()->method_data()->trap_count(Deoptimization::Reason_none) == 0;
277 }
278
279 ciKlass* cha_exact_type(ciType* type);
280
281 // Dump inlining replay data to the stream.
282 void dump_inline_data(outputStream* out) { /* do nothing now */ }
283
284 // How much stack space would the interpreter need in case of a
285 // deoptimization (worst case)
286 void update_interpreter_frame_size(int size) {
287 if (_interpreter_frame_size < size) {
288 _interpreter_frame_size = size;
289 }
290 }
291
292 int interpreter_frame_size() const {
293 return _interpreter_frame_size;
294 }
295
296 const CompiledEntrySignature* compiled_entry_signature() const {
297 return &_compiled_entry_signature;
298 }
299 bool needs_stack_repair() const {
300 return compiled_entry_signature()->c1_needs_stack_repair();
301 }
302 };
303
304
305 // Macro definitions for unified bailout-support
306 // The methods bailout() and bailed_out() are present in all classes
307 // that might bailout, but forward all calls to Compilation
308 #define BAILOUT(msg) { bailout(msg); return; }
309 #define BAILOUT_(msg, res) { bailout(msg); return res; }
310
311 #define CHECK_BAILOUT() { if (bailed_out()) return; }
312 #define CHECK_BAILOUT_(res) { if (bailed_out()) return res; }
313
314 // BAILOUT check with reset of bound labels
315 #define CHECK_BAILOUT1(l1) { if (bailed_out()) { l1.reset(); return; } }
316 #define CHECK_BAILOUT2(l1, l2) { if (bailed_out()) { l1.reset(); l2.reset(); return; } }
317 #define CHECK_BAILOUT3(l1, l2, l3) { if (bailed_out()) { l1.reset(); l2.reset(); l3.reset(); return; } }
318
319
320 class InstructionMark: public StackObj {
321 private:
322 Compilation* _compilation;
323 Instruction* _previous;
324
325 public:
326 InstructionMark(Compilation* compilation, Instruction* instr) {
327 _compilation = compilation;
328 _previous = _compilation->set_current_instruction(instr);
329 }
330 ~InstructionMark() {
331 _compilation->set_current_instruction(_previous);
332 }
333 };
334
335
336 //----------------------------------------------------------------------
337 // Base class for objects allocated by the compiler in the compilation arena
338 class CompilationResourceObj {
339 public:
340 void* operator new(size_t size) throw() { return Compilation::current()->arena()->Amalloc(size); }
341 void* operator new(size_t size, Arena* arena) throw() {
342 return arena->Amalloc(size);
343 }
344 void operator delete(void* p) {} // nothing to do
345
346 #ifndef PRODUCT
347 // Printing support
348 void print() const;
349 virtual void print_on(outputStream* st) const;
350 #endif
351 };
352
353
354 //----------------------------------------------------------------------
355 // Class for aggregating exception handler information.
356
357 // Effectively extends XHandlers class with PC offset of
358 // potentially exception-throwing instruction.
359 // This class is used at the end of the compilation to build the
360 // ExceptionHandlerTable.
361 class ExceptionInfo: public CompilationResourceObj {
362 private:
363 int _pco; // PC of potentially exception-throwing instruction
364 XHandlers* _exception_handlers; // flat list of exception handlers covering this PC
365
366 public:
367 ExceptionInfo(int pco, XHandlers* exception_handlers)
368 : _pco(pco)
369 , _exception_handlers(exception_handlers)
370 { }
371
372 int pco() { return _pco; }
373 XHandlers* exception_handlers() { return _exception_handlers; }
374 };
375
376 #endif // SHARE_C1_C1_COMPILATION_HPP