1 /*
  2  * Copyright (c) 1999, 2021, 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 #include "precompiled.hpp"
 26 #include "c1/c1_Compilation.hpp"
 27 #include "c1/c1_Compiler.hpp"
 28 #include "c1/c1_FrameMap.hpp"
 29 #include "c1/c1_GraphBuilder.hpp"
 30 #include "c1/c1_LinearScan.hpp"
 31 #include "c1/c1_MacroAssembler.hpp"
 32 #include "c1/c1_Runtime1.hpp"
 33 #include "c1/c1_ValueType.hpp"
 34 #include "compiler/compileBroker.hpp"
 35 #include "interpreter/linkResolver.hpp"
 36 #include "jfr/support/jfrIntrinsics.hpp"
 37 #include "memory/allocation.hpp"
 38 #include "memory/allocation.inline.hpp"
 39 #include "memory/resourceArea.hpp"
 40 #include "runtime/interfaceSupport.inline.hpp"
 41 #include "runtime/sharedRuntime.hpp"
 42 #include "runtime/vm_version.hpp"
 43 #include "utilities/bitMap.inline.hpp"
 44 #include "utilities/macros.hpp"
 45 
 46 
 47 Compiler::Compiler() : AbstractCompiler(compiler_c1) {
 48 }
 49 
 50 void Compiler::init_c1_runtime() {
 51   BufferBlob* buffer_blob = CompilerThread::current()->get_buffer_blob();
 52   Arena* arena = new (mtCompiler) Arena(mtCompiler);
 53   Runtime1::initialize(buffer_blob);
 54   FrameMap::initialize();
 55   // initialize data structures
 56   ValueType::initialize(arena);
 57   GraphBuilder::initialize();
 58   // note: to use more than one instance of LinearScan at a time this function call has to
 59   //       be moved somewhere outside of this constructor:
 60   Interval::initialize(arena);
 61 }
 62 
 63 
 64 void Compiler::initialize() {
 65   // Buffer blob must be allocated per C1 compiler thread at startup
 66   BufferBlob* buffer_blob = init_buffer_blob();
 67 
 68   if (should_perform_init()) {
 69     if (buffer_blob == NULL) {
 70       // When we come here we are in state 'initializing'; entire C1 compilation
 71       // can be shut down.
 72       set_state(failed);
 73     } else {
 74       init_c1_runtime();
 75       set_state(initialized);
 76     }
 77   }
 78 }
 79 
 80 int Compiler::code_buffer_size() {
 81   return Compilation::desired_max_code_buffer_size() + Compilation::desired_max_constant_size();
 82 }
 83 
 84 BufferBlob* Compiler::init_buffer_blob() {
 85   // Allocate buffer blob once at startup since allocation for each
 86   // compilation seems to be too expensive (at least on Intel win32).
 87   assert (CompilerThread::current()->get_buffer_blob() == NULL, "Should initialize only once");
 88 
 89   // setup CodeBuffer.  Preallocate a BufferBlob of size
 90   // NMethodSizeLimit plus some extra space for constants.
 91   BufferBlob* buffer_blob = BufferBlob::create("C1 temporary CodeBuffer", code_buffer_size());
 92   if (buffer_blob != NULL) {
 93     CompilerThread::current()->set_buffer_blob(buffer_blob);
 94   }
 95 
 96   return buffer_blob;
 97 }
 98 
 99 bool Compiler::is_intrinsic_supported(const methodHandle& method) {
100   vmIntrinsics::ID id = method->intrinsic_id();
101   assert(id != vmIntrinsics::_none, "must be a VM intrinsic");
102 
103   if (method->is_synchronized()) {
104     // C1 does not support intrinsification of synchronized methods.
105     return false;
106   }
107 
108   switch (id) {
109   case vmIntrinsics::_compareAndSetLong:
110     if (!VM_Version::supports_cx8()) return false;
111     break;
112   case vmIntrinsics::_getAndAddInt:
113     if (!VM_Version::supports_atomic_getadd4()) return false;
114     break;
115   case vmIntrinsics::_getAndAddLong:
116     if (!VM_Version::supports_atomic_getadd8()) return false;
117     break;
118   case vmIntrinsics::_getAndSetInt:
119     if (!VM_Version::supports_atomic_getset4()) return false;
120     break;
121   case vmIntrinsics::_getAndSetLong:
122     if (!VM_Version::supports_atomic_getset8()) return false;
123     break;
124   case vmIntrinsics::_getAndSetReference:
125 #ifdef _LP64
126     if (!UseCompressedOops && !VM_Version::supports_atomic_getset8()) return false;
127     if (UseCompressedOops && !VM_Version::supports_atomic_getset4()) return false;
128 #else
129     if (!VM_Version::supports_atomic_getset4()) return false;
130 #endif
131     break;
132   case vmIntrinsics::_onSpinWait:
133     if (!VM_Version::supports_on_spin_wait()) return false;
134     break;
135   case vmIntrinsics::_arraycopy:
136   case vmIntrinsics::_currentTimeMillis:
137   case vmIntrinsics::_nanoTime:
138   case vmIntrinsics::_Reference_get:
139     // Use the intrinsic version of Reference.get() so that the value in
140     // the referent field can be registered by the G1 pre-barrier code.
141     // Also to prevent commoning reads from this field across safepoint
142     // since GC can change its value.
143   case vmIntrinsics::_loadFence:
144   case vmIntrinsics::_storeFence:
145   case vmIntrinsics::_fullFence:
146   case vmIntrinsics::_floatToRawIntBits:
147   case vmIntrinsics::_intBitsToFloat:
148   case vmIntrinsics::_doubleToRawLongBits:
149   case vmIntrinsics::_longBitsToDouble:
150   case vmIntrinsics::_getClass:
151   case vmIntrinsics::_isInstance:
152   case vmIntrinsics::_isPrimitive:
153   case vmIntrinsics::_getModifiers:
154   case vmIntrinsics::_currentThread0:
155   case vmIntrinsics::_currentThread:
156   case vmIntrinsics::_scopeLocalCache:
157   case vmIntrinsics::_dabs:
158   case vmIntrinsics::_dsqrt:
159   case vmIntrinsics::_dsin:
160   case vmIntrinsics::_dcos:
161   case vmIntrinsics::_dtan:
162   case vmIntrinsics::_dlog:
163   case vmIntrinsics::_dlog10:
164   case vmIntrinsics::_dexp:
165   case vmIntrinsics::_dpow:
166   case vmIntrinsics::_fmaD:
167   case vmIntrinsics::_fmaF:
168   case vmIntrinsics::_getReference:
169   case vmIntrinsics::_getBoolean:
170   case vmIntrinsics::_getByte:
171   case vmIntrinsics::_getShort:
172   case vmIntrinsics::_getChar:
173   case vmIntrinsics::_getInt:
174   case vmIntrinsics::_getLong:
175   case vmIntrinsics::_getFloat:
176   case vmIntrinsics::_getDouble:
177   case vmIntrinsics::_putReference:
178   case vmIntrinsics::_putBoolean:
179   case vmIntrinsics::_putByte:
180   case vmIntrinsics::_putShort:
181   case vmIntrinsics::_putChar:
182   case vmIntrinsics::_putInt:
183   case vmIntrinsics::_putLong:
184   case vmIntrinsics::_putFloat:
185   case vmIntrinsics::_putDouble:
186   case vmIntrinsics::_getReferenceVolatile:
187   case vmIntrinsics::_getBooleanVolatile:
188   case vmIntrinsics::_getByteVolatile:
189   case vmIntrinsics::_getShortVolatile:
190   case vmIntrinsics::_getCharVolatile:
191   case vmIntrinsics::_getIntVolatile:
192   case vmIntrinsics::_getLongVolatile:
193   case vmIntrinsics::_getFloatVolatile:
194   case vmIntrinsics::_getDoubleVolatile:
195   case vmIntrinsics::_putReferenceVolatile:
196   case vmIntrinsics::_putBooleanVolatile:
197   case vmIntrinsics::_putByteVolatile:
198   case vmIntrinsics::_putShortVolatile:
199   case vmIntrinsics::_putCharVolatile:
200   case vmIntrinsics::_putIntVolatile:
201   case vmIntrinsics::_putLongVolatile:
202   case vmIntrinsics::_putFloatVolatile:
203   case vmIntrinsics::_putDoubleVolatile:
204   case vmIntrinsics::_getShortUnaligned:
205   case vmIntrinsics::_getCharUnaligned:
206   case vmIntrinsics::_getIntUnaligned:
207   case vmIntrinsics::_getLongUnaligned:
208   case vmIntrinsics::_putShortUnaligned:
209   case vmIntrinsics::_putCharUnaligned:
210   case vmIntrinsics::_putIntUnaligned:
211   case vmIntrinsics::_putLongUnaligned:
212   case vmIntrinsics::_Preconditions_checkIndex:
213   case vmIntrinsics::_Preconditions_checkLongIndex:
214   case vmIntrinsics::_updateCRC32:
215   case vmIntrinsics::_updateBytesCRC32:
216   case vmIntrinsics::_updateByteBufferCRC32:
217 #if defined(S390) || defined(PPC64) || defined(AARCH64)
218   case vmIntrinsics::_updateBytesCRC32C:
219   case vmIntrinsics::_updateDirectByteBufferCRC32C:
220 #endif
221   case vmIntrinsics::_vectorizedMismatch:
222   case vmIntrinsics::_compareAndSetInt:
223   case vmIntrinsics::_compareAndSetReference:
224   case vmIntrinsics::_getCharStringU:
225   case vmIntrinsics::_putCharStringU:
226   case vmIntrinsics::_Continuation_doYield:
227 #ifdef JFR_HAVE_INTRINSICS
228   case vmIntrinsics::_counterTime:
229   case vmIntrinsics::_getEventWriter:
230 #endif
231   case vmIntrinsics::_getObjectSize:
232     break;
233   case vmIntrinsics::_blackhole:
234     break;
235   default:
236     return false; // Intrinsics not on the previous list are not available.
237   }
238 
239   return true;
240 }
241 
242 void Compiler::compile_method(ciEnv* env, ciMethod* method, int entry_bci, bool install_code, DirectiveSet* directive) {
243   BufferBlob* buffer_blob = CompilerThread::current()->get_buffer_blob();
244   assert(buffer_blob != NULL, "Must exist");
245   // invoke compilation
246   {
247     // We are nested here because we need for the destructor
248     // of Compilation to occur before we release the any
249     // competing compiler thread
250     ResourceMark rm;
251     Compilation c(this, env, method, entry_bci, buffer_blob, install_code, directive);
252   }
253 }
254 
255 
256 void Compiler::print_timers() {
257   Compilation::print_timers();
258 }