Mercurial > jdk8-mips64-public > hotspot / file comparison

comparison: src/share/vm/shark/sharkCompiler.cpp

src/share/vm/shark/sharkCompiler.cpp

changeset 0
f90c822e73f8
child 6876
710a3c8b516e
equal deleted inserted replaced
-1:000000000000 0:f90c822e73f8
1 /*
2 * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
3 * Copyright 2008, 2009, 2010, 2011 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 "precompiled.hpp"
27 #include "ci/ciEnv.hpp"
28 #include "ci/ciMethod.hpp"
29 #include "code/debugInfoRec.hpp"
30 #include "code/dependencies.hpp"
31 #include "code/exceptionHandlerTable.hpp"
32 #include "code/oopRecorder.hpp"
33 #include "compiler/abstractCompiler.hpp"
34 #include "compiler/oopMap.hpp"
35 #include "shark/llvmHeaders.hpp"
36 #include "shark/sharkBuilder.hpp"
37 #include "shark/sharkCodeBuffer.hpp"
38 #include "shark/sharkCompiler.hpp"
39 #include "shark/sharkContext.hpp"
40 #include "shark/sharkEntry.hpp"
41 #include "shark/sharkFunction.hpp"
42 #include "shark/sharkMemoryManager.hpp"
43 #include "shark/sharkNativeWrapper.hpp"
44 #include "shark/shark_globals.hpp"
45 #include "utilities/debug.hpp"
46
47 #include <fnmatch.h>
48
49 using namespace llvm;
50
51 namespace {
52 cl::opt<std::string>
53 MCPU("mcpu");
54
55 cl::list<std::string>
56 MAttrs("mattr",
57 cl::CommaSeparated);
58 }
59
60 SharkCompiler::SharkCompiler()
61 : AbstractCompiler() {
62 // Create the lock to protect the memory manager and execution engine
63 _execution_engine_lock = new Monitor(Mutex::leaf, "SharkExecutionEngineLock");
64 MutexLocker locker(execution_engine_lock());
65
66 // Make LLVM safe for multithreading
67 if (!llvm_start_multithreaded())
68 fatal("llvm_start_multithreaded() failed");
69
70 // Initialize the native target
71 InitializeNativeTarget();
72
73 // MCJIT require a native AsmPrinter
74 InitializeNativeTargetAsmPrinter();
75
76 // Create the two contexts which we'll use
77 _normal_context = new SharkContext("normal");
78 _native_context = new SharkContext("native");
79
80 // Create the memory manager
81 _memory_manager = new SharkMemoryManager();
82
83 // Finetune LLVM for the current host CPU.
84 StringMap<bool> Features;
85 bool gotCpuFeatures = llvm::sys::getHostCPUFeatures(Features);
86 std::string cpu("-mcpu=" + llvm::sys::getHostCPUName());
87
88 std::vector<const char*> args;
89 args.push_back(""); // program name
90 args.push_back(cpu.c_str());
91
92 std::string mattr("-mattr=");
93 if(gotCpuFeatures){
94 for(StringMap<bool>::iterator I = Features.begin(),
95 E = Features.end(); I != E; ++I){
96 if(I->second){
97 std::string attr(I->first());
98 mattr+="+"+attr+",";
99 }
100 }
101 args.push_back(mattr.c_str());
102 }
103
104 args.push_back(0); // terminator
105 cl::ParseCommandLineOptions(args.size() - 1, (char **) &args[0]);
106
107 // Create the JIT
108 std::string ErrorMsg;
109
110 EngineBuilder builder(_normal_context->module());
111 builder.setMCPU(MCPU);
112 builder.setMAttrs(MAttrs);
113 builder.setJITMemoryManager(memory_manager());
114 builder.setEngineKind(EngineKind::JIT);
115 builder.setErrorStr(&ErrorMsg);
116 if (! fnmatch(SharkOptimizationLevel, "None", 0)) {
117 tty->print_cr("Shark optimization level set to: None");
118 builder.setOptLevel(llvm::CodeGenOpt::None);
119 } else if (! fnmatch(SharkOptimizationLevel, "Less", 0)) {
120 tty->print_cr("Shark optimization level set to: Less");
121 builder.setOptLevel(llvm::CodeGenOpt::Less);
122 } else if (! fnmatch(SharkOptimizationLevel, "Aggressive", 0)) {
123 tty->print_cr("Shark optimization level set to: Aggressive");
124 builder.setOptLevel(llvm::CodeGenOpt::Aggressive);
125 } // else Default is selected by, well, default :-)
126 _execution_engine = builder.create();
127
128 if (!execution_engine()) {
129 if (!ErrorMsg.empty())
130 printf("Error while creating Shark JIT: %s\n",ErrorMsg.c_str());
131 else
132 printf("Unknown error while creating Shark JIT\n");
133 exit(1);
134 }
135
136 execution_engine()->addModule(_native_context->module());
137
138 // All done
139 set_state(initialized);
140 }
141
142 void SharkCompiler::initialize() {
143 ShouldNotCallThis();
144 }
145
146 void SharkCompiler::compile_method(ciEnv* env,
147 ciMethod* target,
148 int entry_bci) {
149 assert(is_initialized(), "should be");
150 ResourceMark rm;
151 const char *name = methodname(
152 target->holder()->name()->as_utf8(), target->name()->as_utf8());
153
154 // Do the typeflow analysis
155 ciTypeFlow *flow;
156 if (entry_bci == InvocationEntryBci)
157 flow = target->get_flow_analysis();
158 else
159 flow = target->get_osr_flow_analysis(entry_bci);
160 if (flow->failing())
161 return;
162 if (SharkPrintTypeflowOf != NULL) {
163 if (!fnmatch(SharkPrintTypeflowOf, name, 0))
164 flow->print_on(tty);
165 }
166
167 // Create the recorders
168 Arena arena;
169 env->set_oop_recorder(new OopRecorder(&arena));
170 OopMapSet oopmaps;
171 env->set_debug_info(new DebugInformationRecorder(env->oop_recorder()));
172 env->debug_info()->set_oopmaps(&oopmaps);
173 env->set_dependencies(new Dependencies(env));
174
175 // Create the code buffer and builder
176 CodeBuffer hscb("Shark", 256 * K, 64 * K);
177 hscb.initialize_oop_recorder(env->oop_recorder());
178 MacroAssembler *masm = new MacroAssembler(&hscb);
179 SharkCodeBuffer cb(masm);
180 SharkBuilder builder(&cb);
181
182 // Emit the entry point
183 SharkEntry *entry = (SharkEntry *) cb.malloc(sizeof(SharkEntry));
184
185 // Build the LLVM IR for the method
186 Function *function = SharkFunction::build(env, &builder, flow, name);
187 if (env->failing()) {
188 return;
189 }
190
191 // Generate native code. It's unpleasant that we have to drop into
192 // the VM to do this -- it blocks safepoints -- but I can't see any
193 // other way to handle the locking.
194 {
195 ThreadInVMfromNative tiv(JavaThread::current());
196 generate_native_code(entry, function, name);
197 }
198
199 // Install the method into the VM
200 CodeOffsets offsets;
201 offsets.set_value(CodeOffsets::Deopt, 0);
202 offsets.set_value(CodeOffsets::Exceptions, 0);
203 offsets.set_value(CodeOffsets::Verified_Entry,
204 target->is_static() ? 0 : wordSize);
205
206 ExceptionHandlerTable handler_table;
207 ImplicitExceptionTable inc_table;
208
209 env->register_method(target,
210 entry_bci,
211 &offsets,
212 0,
213 &hscb,
214 0,
215 &oopmaps,
216 &handler_table,
217 &inc_table,
218 this,
219 env->comp_level(),
220 false,
221 false);
222 }
223
224 nmethod* SharkCompiler::generate_native_wrapper(MacroAssembler* masm,
225 methodHandle target,
226 int compile_id,
227 BasicType* arg_types,
228 BasicType return_type) {
229 assert(is_initialized(), "should be");
230 ResourceMark rm;
231 const char *name = methodname(
232 target->klass_name()->as_utf8(), target->name()->as_utf8());
233
234 // Create the code buffer and builder
235 SharkCodeBuffer cb(masm);
236 SharkBuilder builder(&cb);
237
238 // Emit the entry point
239 SharkEntry *entry = (SharkEntry *) cb.malloc(sizeof(SharkEntry));
240
241 // Build the LLVM IR for the method
242 SharkNativeWrapper *wrapper = SharkNativeWrapper::build(
243 &builder, target, name, arg_types, return_type);
244
245 // Generate native code
246 generate_native_code(entry, wrapper->function(), name);
247
248 // Return the nmethod for installation in the VM
249 return nmethod::new_native_nmethod(target,
250 compile_id,
251 masm->code(),
252 0,
253 0,
254 wrapper->frame_size(),
255 wrapper->receiver_offset(),
256 wrapper->lock_offset(),
257 wrapper->oop_maps());
258 }
259
260 void SharkCompiler::generate_native_code(SharkEntry* entry,
261 Function* function,
262 const char* name) {
263 // Print the LLVM bitcode, if requested
264 if (SharkPrintBitcodeOf != NULL) {
265 if (!fnmatch(SharkPrintBitcodeOf, name, 0))
266 function->dump();
267 }
268
269 if (SharkVerifyFunction != NULL) {
270 if (!fnmatch(SharkVerifyFunction, name, 0)) {
271 verifyFunction(*function);
272 }
273 }
274
275 // Compile to native code
276 address code = NULL;
277 context()->add_function(function);
278 {
279 MutexLocker locker(execution_engine_lock());
280 free_queued_methods();
281
282 #ifndef NDEBUG
283 #if SHARK_LLVM_VERSION <= 31
284 #define setCurrentDebugType SetCurrentDebugType
285 #endif
286 if (SharkPrintAsmOf != NULL) {
287 if (!fnmatch(SharkPrintAsmOf, name, 0)) {
288 llvm::setCurrentDebugType(X86_ONLY("x86-emitter") NOT_X86("jit"));
289 llvm::DebugFlag = true;
290 }
291 else {
292 llvm::setCurrentDebugType("");
293 llvm::DebugFlag = false;
294 }
295 }
296 #ifdef setCurrentDebugType
297 #undef setCurrentDebugType
298 #endif
299 #endif // !NDEBUG
300 memory_manager()->set_entry_for_function(function, entry);
301 code = (address) execution_engine()->getPointerToFunction(function);
302 }
303 assert(code != NULL, "code must be != NULL");
304 entry->set_entry_point(code);
305 entry->set_function(function);
306 entry->set_context(context());
307 address code_start = entry->code_start();
308 address code_limit = entry->code_limit();
309
310 // Register generated code for profiling, etc
311 if (JvmtiExport::should_post_dynamic_code_generated())
312 JvmtiExport::post_dynamic_code_generated(name, code_start, code_limit);
313
314 // Print debug information, if requested
315 if (SharkTraceInstalls) {
316 tty->print_cr(
317 " [%p-%p): %s (%d bytes code)",
318 code_start, code_limit, name, code_limit - code_start);
319 }
320 }
321
322 void SharkCompiler::free_compiled_method(address code) {
323 // This method may only be called when the VM is at a safepoint.
324 // All _thread_in_vm threads will be waiting for the safepoint to
325 // finish with the exception of the VM thread, so we can consider
326 // ourself the owner of the execution engine lock even though we
327 // can't actually acquire it at this time.
328 assert(Thread::current()->is_Compiler_thread(), "must be called by compiler thread");
329 assert_locked_or_safepoint(CodeCache_lock);
330
331 SharkEntry *entry = (SharkEntry *) code;
332 entry->context()->push_to_free_queue(entry->function());
333 }
334
335 void SharkCompiler::free_queued_methods() {
336 // The free queue is protected by the execution engine lock
337 assert(execution_engine_lock()->owned_by_self(), "should be");
338
339 while (true) {
340 Function *function = context()->pop_from_free_queue();
341 if (function == NULL)
342 break;
343
344 execution_engine()->freeMachineCodeForFunction(function);
345 function->eraseFromParent();
346 }
347 }
348
349 const char* SharkCompiler::methodname(const char* klass, const char* method) {
350 char *buf = NEW_RESOURCE_ARRAY(char, strlen(klass) + 2 + strlen(method) + 1);
351
352 char *dst = buf;
353 for (const char *c = klass; *c; c++) {
354 if (*c == '/')
355 *(dst++) = '.';
356 else
357 *(dst++) = *c;
358 }
359 *(dst++) = ':';
360 *(dst++) = ':';
361 for (const char *c = method; *c; c++) {
362 *(dst++) = *c;
363 }
364 *(dst++) = '\0';
365 return buf;
366 }

Mercurial Repository: jdk8-mips64-public/hotspot

mercurial