Mercurial > hg > graal-compiler
comparison src/share/vm/shark/sharkCompiler.cpp @ 1692:d2ede61b7a12
6976186: integrate Shark HotSpot changes
Summary: Shark is a JIT compiler for Zero that uses the LLVM compiler infrastructure.
Reviewed-by: kvn, twisti
Contributed-by: Gary Benson <gbenson@redhat.com>
author | twisti |
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date | Wed, 11 Aug 2010 05:51:21 -0700 |
parents | |
children | f95d63e2154a |
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1691:4a665be40fd3 | 1692:d2ede61b7a12 |
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1 /* | |
2 * Copyright (c) 1999, 2007, Oracle and/or its affiliates. All rights reserved. | |
3 * Copyright 2008, 2009, 2010 Red Hat, Inc. | |
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
5 * | |
6 * This code is free software; you can redistribute it and/or modify it | |
7 * under the terms of the GNU General Public License version 2 only, as | |
8 * published by the Free Software Foundation. | |
9 * | |
10 * This code is distributed in the hope that it will be useful, but WITHOUT | |
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
13 * version 2 for more details (a copy is included in the LICENSE file that | |
14 * accompanied this code). | |
15 * | |
16 * You should have received a copy of the GNU General Public License version | |
17 * 2 along with this work; if not, write to the Free Software Foundation, | |
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
19 * | |
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
21 * or visit www.oracle.com if you need additional information or have any | |
22 * questions. | |
23 * | |
24 */ | |
25 | |
26 #include "incls/_precompiled.incl" | |
27 #include "incls/_sharkCompiler.cpp.incl" | |
28 | |
29 #include <fnmatch.h> | |
30 | |
31 using namespace llvm; | |
32 | |
33 #if SHARK_LLVM_VERSION >= 27 | |
34 namespace { | |
35 cl::opt<std::string> | |
36 MCPU("mcpu"); | |
37 | |
38 cl::list<std::string> | |
39 MAttrs("mattr", | |
40 cl::CommaSeparated); | |
41 } | |
42 #endif | |
43 | |
44 SharkCompiler::SharkCompiler() | |
45 : AbstractCompiler() { | |
46 // Create the lock to protect the memory manager and execution engine | |
47 _execution_engine_lock = new Monitor(Mutex::leaf, "SharkExecutionEngineLock"); | |
48 MutexLocker locker(execution_engine_lock()); | |
49 | |
50 // Make LLVM safe for multithreading | |
51 if (!llvm_start_multithreaded()) | |
52 fatal("llvm_start_multithreaded() failed"); | |
53 | |
54 // Initialize the native target | |
55 InitializeNativeTarget(); | |
56 | |
57 // Create the two contexts which we'll use | |
58 _normal_context = new SharkContext("normal"); | |
59 _native_context = new SharkContext("native"); | |
60 | |
61 // Create the memory manager | |
62 _memory_manager = new SharkMemoryManager(); | |
63 | |
64 #if SHARK_LLVM_VERSION >= 27 | |
65 // Finetune LLVM for the current host CPU. | |
66 StringMap<bool> Features; | |
67 bool gotCpuFeatures = llvm::sys::getHostCPUFeatures(Features); | |
68 std::string cpu("-mcpu=" + llvm::sys::getHostCPUName()); | |
69 | |
70 std::vector<const char*> args; | |
71 args.push_back(""); // program name | |
72 args.push_back(cpu.c_str()); | |
73 | |
74 std::string mattr("-mattr="); | |
75 if(gotCpuFeatures){ | |
76 for(StringMap<bool>::iterator I = Features.begin(), | |
77 E = Features.end(); I != E; ++I){ | |
78 if(I->second){ | |
79 std::string attr(I->first()); | |
80 mattr+="+"+attr+","; | |
81 } | |
82 } | |
83 args.push_back(mattr.c_str()); | |
84 } | |
85 | |
86 args.push_back(0); // terminator | |
87 cl::ParseCommandLineOptions(args.size() - 1, (char **) &args[0]); | |
88 | |
89 // Create the JIT | |
90 std::string ErrorMsg; | |
91 | |
92 EngineBuilder builder(_normal_context->module()); | |
93 builder.setMCPU(MCPU); | |
94 builder.setMAttrs(MAttrs); | |
95 builder.setJITMemoryManager(memory_manager()); | |
96 builder.setEngineKind(EngineKind::JIT); | |
97 builder.setErrorStr(&ErrorMsg); | |
98 _execution_engine = builder.create(); | |
99 | |
100 if (!execution_engine()) { | |
101 if (!ErrorMsg.empty()) | |
102 printf("Error while creating Shark JIT: %s\n",ErrorMsg.c_str()); | |
103 else | |
104 printf("Unknown error while creating Shark JIT\n"); | |
105 exit(1); | |
106 } | |
107 | |
108 execution_engine()->addModule( | |
109 _native_context->module()); | |
110 #else | |
111 _execution_engine = ExecutionEngine::createJIT( | |
112 _normal_context->module_provider(), | |
113 NULL, memory_manager(), CodeGenOpt::Default); | |
114 execution_engine()->addModuleProvider( | |
115 _native_context->module_provider()); | |
116 #endif | |
117 | |
118 // All done | |
119 mark_initialized(); | |
120 } | |
121 | |
122 void SharkCompiler::initialize() { | |
123 ShouldNotCallThis(); | |
124 } | |
125 | |
126 void SharkCompiler::compile_method(ciEnv* env, | |
127 ciMethod* target, | |
128 int entry_bci) { | |
129 assert(is_initialized(), "should be"); | |
130 ResourceMark rm; | |
131 const char *name = methodname( | |
132 target->holder()->name()->as_utf8(), target->name()->as_utf8()); | |
133 | |
134 // Do the typeflow analysis | |
135 ciTypeFlow *flow; | |
136 if (entry_bci == InvocationEntryBci) | |
137 flow = target->get_flow_analysis(); | |
138 else | |
139 flow = target->get_osr_flow_analysis(entry_bci); | |
140 if (flow->failing()) | |
141 return; | |
142 if (SharkPrintTypeflowOf != NULL) { | |
143 if (!fnmatch(SharkPrintTypeflowOf, name, 0)) | |
144 flow->print_on(tty); | |
145 } | |
146 | |
147 // Create the recorders | |
148 Arena arena; | |
149 env->set_oop_recorder(new OopRecorder(&arena)); | |
150 OopMapSet oopmaps; | |
151 env->set_debug_info(new DebugInformationRecorder(env->oop_recorder())); | |
152 env->debug_info()->set_oopmaps(&oopmaps); | |
153 env->set_dependencies(new Dependencies(env)); | |
154 | |
155 // Create the code buffer and builder | |
156 CodeBuffer hscb("Shark", 256 * K, 64 * K); | |
157 hscb.initialize_oop_recorder(env->oop_recorder()); | |
158 MacroAssembler *masm = new MacroAssembler(&hscb); | |
159 SharkCodeBuffer cb(masm); | |
160 SharkBuilder builder(&cb); | |
161 | |
162 // Emit the entry point | |
163 SharkEntry *entry = (SharkEntry *) cb.malloc(sizeof(SharkEntry)); | |
164 | |
165 // Build the LLVM IR for the method | |
166 Function *function = SharkFunction::build(env, &builder, flow, name); | |
167 | |
168 // Generate native code. It's unpleasant that we have to drop into | |
169 // the VM to do this -- it blocks safepoints -- but I can't see any | |
170 // other way to handle the locking. | |
171 { | |
172 ThreadInVMfromNative tiv(JavaThread::current()); | |
173 generate_native_code(entry, function, name); | |
174 } | |
175 | |
176 // Install the method into the VM | |
177 CodeOffsets offsets; | |
178 offsets.set_value(CodeOffsets::Deopt, 0); | |
179 offsets.set_value(CodeOffsets::Exceptions, 0); | |
180 offsets.set_value(CodeOffsets::Verified_Entry, | |
181 target->is_static() ? 0 : wordSize); | |
182 | |
183 ExceptionHandlerTable handler_table; | |
184 ImplicitExceptionTable inc_table; | |
185 | |
186 env->register_method(target, | |
187 entry_bci, | |
188 &offsets, | |
189 0, | |
190 &hscb, | |
191 0, | |
192 &oopmaps, | |
193 &handler_table, | |
194 &inc_table, | |
195 this, | |
196 env->comp_level(), | |
197 false, | |
198 false); | |
199 } | |
200 | |
201 nmethod* SharkCompiler::generate_native_wrapper(MacroAssembler* masm, | |
202 methodHandle target, | |
203 BasicType* arg_types, | |
204 BasicType return_type) { | |
205 assert(is_initialized(), "should be"); | |
206 ResourceMark rm; | |
207 const char *name = methodname( | |
208 target->klass_name()->as_utf8(), target->name()->as_utf8()); | |
209 | |
210 // Create the code buffer and builder | |
211 SharkCodeBuffer cb(masm); | |
212 SharkBuilder builder(&cb); | |
213 | |
214 // Emit the entry point | |
215 SharkEntry *entry = (SharkEntry *) cb.malloc(sizeof(SharkEntry)); | |
216 | |
217 // Build the LLVM IR for the method | |
218 SharkNativeWrapper *wrapper = SharkNativeWrapper::build( | |
219 &builder, target, name, arg_types, return_type); | |
220 | |
221 // Generate native code | |
222 generate_native_code(entry, wrapper->function(), name); | |
223 | |
224 // Return the nmethod for installation in the VM | |
225 return nmethod::new_native_nmethod(target, | |
226 masm->code(), | |
227 0, | |
228 0, | |
229 wrapper->frame_size(), | |
230 wrapper->receiver_offset(), | |
231 wrapper->lock_offset(), | |
232 wrapper->oop_maps()); | |
233 } | |
234 | |
235 void SharkCompiler::generate_native_code(SharkEntry* entry, | |
236 Function* function, | |
237 const char* name) { | |
238 // Print the LLVM bitcode, if requested | |
239 if (SharkPrintBitcodeOf != NULL) { | |
240 if (!fnmatch(SharkPrintBitcodeOf, name, 0)) | |
241 function->dump(); | |
242 } | |
243 | |
244 // Compile to native code | |
245 address code = NULL; | |
246 context()->add_function(function); | |
247 { | |
248 MutexLocker locker(execution_engine_lock()); | |
249 free_queued_methods(); | |
250 | |
251 if (SharkPrintAsmOf != NULL) { | |
252 #if SHARK_LLVM_VERSION >= 27 | |
253 #ifndef NDEBUG | |
254 if (!fnmatch(SharkPrintAsmOf, name, 0)) { | |
255 llvm::SetCurrentDebugType(X86_ONLY("x86-emitter") NOT_X86("jit")); | |
256 llvm::DebugFlag = true; | |
257 } | |
258 else { | |
259 llvm::SetCurrentDebugType(""); | |
260 llvm::DebugFlag = false; | |
261 } | |
262 #endif // !NDEBUG | |
263 #else | |
264 // NB you need to patch LLVM with http://tinyurl.com/yf3baln for this | |
265 std::vector<const char*> args; | |
266 args.push_back(""); // program name | |
267 if (!fnmatch(SharkPrintAsmOf, name, 0)) | |
268 args.push_back("-debug-only=x86-emitter"); | |
269 else | |
270 args.push_back("-debug-only=none"); | |
271 args.push_back(0); // terminator | |
272 cl::ParseCommandLineOptions(args.size() - 1, (char **) &args[0]); | |
273 #endif // SHARK_LLVM_VERSION | |
274 } | |
275 memory_manager()->set_entry_for_function(function, entry); | |
276 code = (address) execution_engine()->getPointerToFunction(function); | |
277 } | |
278 entry->set_entry_point(code); | |
279 entry->set_function(function); | |
280 entry->set_context(context()); | |
281 address code_start = entry->code_start(); | |
282 address code_limit = entry->code_limit(); | |
283 | |
284 // Register generated code for profiling, etc | |
285 if (JvmtiExport::should_post_dynamic_code_generated()) | |
286 JvmtiExport::post_dynamic_code_generated(name, code_start, code_limit); | |
287 | |
288 // Print debug information, if requested | |
289 if (SharkTraceInstalls) { | |
290 tty->print_cr( | |
291 " [%p-%p): %s (%d bytes code)", | |
292 code_start, code_limit, name, code_limit - code_start); | |
293 } | |
294 } | |
295 | |
296 void SharkCompiler::free_compiled_method(address code) { | |
297 // This method may only be called when the VM is at a safepoint. | |
298 // All _thread_in_vm threads will be waiting for the safepoint to | |
299 // finish with the exception of the VM thread, so we can consider | |
300 // ourself the owner of the execution engine lock even though we | |
301 // can't actually acquire it at this time. | |
302 assert(Thread::current()->is_VM_thread(), "must be called by VM thread"); | |
303 assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint"); | |
304 | |
305 SharkEntry *entry = (SharkEntry *) code; | |
306 entry->context()->push_to_free_queue(entry->function()); | |
307 } | |
308 | |
309 void SharkCompiler::free_queued_methods() { | |
310 // The free queue is protected by the execution engine lock | |
311 assert(execution_engine_lock()->owned_by_self(), "should be"); | |
312 | |
313 while (true) { | |
314 Function *function = context()->pop_from_free_queue(); | |
315 if (function == NULL) | |
316 break; | |
317 | |
318 execution_engine()->freeMachineCodeForFunction(function); | |
319 function->eraseFromParent(); | |
320 } | |
321 } | |
322 | |
323 const char* SharkCompiler::methodname(const char* klass, const char* method) { | |
324 char *buf = NEW_RESOURCE_ARRAY(char, strlen(klass) + 2 + strlen(method) + 1); | |
325 | |
326 char *dst = buf; | |
327 for (const char *c = klass; *c; c++) { | |
328 if (*c == '/') | |
329 *(dst++) = '.'; | |
330 else | |
331 *(dst++) = *c; | |
332 } | |
333 *(dst++) = ':'; | |
334 *(dst++) = ':'; | |
335 for (const char *c = method; *c; c++) { | |
336 *(dst++) = *c; | |
337 } | |
338 *(dst++) = '\0'; | |
339 return buf; | |
340 } |