1 /*
   2  * Copyright (c) 2012, 2017, 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 package org.graalvm.compiler.hotspot;
  26 
  27 import java.util.EnumSet;
  28 
  29 import jdk.internal.vm.compiler.collections.EconomicMap;
  30 import jdk.internal.vm.compiler.collections.EconomicSet;
  31 import jdk.internal.vm.compiler.collections.Equivalence;
  32 import jdk.internal.vm.compiler.collections.MapCursor;
  33 import org.graalvm.compiler.code.CompilationResult;
  34 import org.graalvm.compiler.core.common.CompilationIdentifier;
  35 import org.graalvm.compiler.core.common.cfg.AbstractBlockBase;
  36 import org.graalvm.compiler.core.common.spi.ForeignCallDescriptor;
  37 import org.graalvm.compiler.core.common.spi.ForeignCallLinkage;
  38 import org.graalvm.compiler.core.target.Backend;
  39 import org.graalvm.compiler.graph.Node.ConstantNodeParameter;
  40 import org.graalvm.compiler.graph.Node.NodeIntrinsic;
  41 import org.graalvm.compiler.hotspot.meta.HotSpotProviders;
  42 import org.graalvm.compiler.hotspot.nodes.VMErrorNode;
  43 import org.graalvm.compiler.hotspot.nodes.aot.ResolveConstantStubCall;
  44 import org.graalvm.compiler.hotspot.replacements.AESCryptSubstitutions;
  45 import org.graalvm.compiler.hotspot.replacements.BigIntegerSubstitutions;
  46 import org.graalvm.compiler.hotspot.replacements.CipherBlockChainingSubstitutions;
  47 import org.graalvm.compiler.hotspot.replacements.SHA2Substitutions;
  48 import org.graalvm.compiler.hotspot.replacements.SHA5Substitutions;
  49 import org.graalvm.compiler.hotspot.replacements.SHASubstitutions;
  50 import org.graalvm.compiler.hotspot.stubs.ExceptionHandlerStub;
  51 import org.graalvm.compiler.hotspot.stubs.Stub;
  52 import org.graalvm.compiler.hotspot.stubs.UnwindExceptionToCallerStub;
  53 import org.graalvm.compiler.hotspot.word.KlassPointer;
  54 import org.graalvm.compiler.hotspot.word.MethodCountersPointer;
  55 import org.graalvm.compiler.lir.LIR;
  56 import org.graalvm.compiler.lir.LIRFrameState;
  57 import org.graalvm.compiler.lir.LIRInstruction;
  58 import org.graalvm.compiler.lir.LIRInstruction.OperandFlag;
  59 import org.graalvm.compiler.lir.LIRInstruction.OperandMode;
  60 import org.graalvm.compiler.lir.StandardOp.LabelOp;
  61 import org.graalvm.compiler.lir.StandardOp.SaveRegistersOp;
  62 import org.graalvm.compiler.lir.ValueConsumer;
  63 import org.graalvm.compiler.lir.asm.CompilationResultBuilder;
  64 import org.graalvm.compiler.lir.framemap.FrameMap;
  65 import org.graalvm.compiler.nodes.UnwindNode;
  66 import org.graalvm.compiler.nodes.extended.ForeignCallNode;
  67 import org.graalvm.compiler.options.Option;
  68 import org.graalvm.compiler.options.OptionKey;
  69 import org.graalvm.compiler.options.OptionType;
  70 import org.graalvm.compiler.options.OptionValues;
  71 import org.graalvm.compiler.phases.tiers.SuitesProvider;
  72 import org.graalvm.compiler.word.Word;
  73 import jdk.internal.vm.compiler.word.Pointer;
  74 
  75 import jdk.vm.ci.code.CompilationRequest;
  76 import jdk.vm.ci.code.CompiledCode;
  77 import jdk.vm.ci.code.Register;
  78 import jdk.vm.ci.code.RegisterSaveLayout;
  79 import jdk.vm.ci.code.StackSlot;
  80 import jdk.vm.ci.code.ValueUtil;
  81 import jdk.vm.ci.hotspot.HotSpotCompilationRequest;
  82 import jdk.vm.ci.hotspot.HotSpotJVMCIRuntime;
  83 import jdk.vm.ci.hotspot.HotSpotResolvedJavaMethod;
  84 import jdk.vm.ci.meta.ResolvedJavaMethod;
  85 import jdk.vm.ci.meta.Value;
  86 import jdk.vm.ci.runtime.JVMCICompiler;
  87 
  88 /**
  89  * HotSpot specific backend.
  90  */
  91 public abstract class HotSpotBackend extends Backend implements FrameMap.ReferenceMapBuilderFactory {
  92 
  93     public static class Options {
  94         // @formatter:off
  95         @Option(help = "Use Graal arithmetic stubs instead of HotSpot stubs where possible")
  96         public static final OptionKey<Boolean> GraalArithmeticStubs = new OptionKey<>(false); // GR-8276
  97         @Option(help = "Enables instruction profiling on assembler level. Valid values are a comma separated list of supported instructions." +
  98                         " Compare with subclasses of Assembler.InstructionCounter.", type = OptionType.Debug)
  99         public static final OptionKey<String> ASMInstructionProfiling = new OptionKey<>(null);
 100         // @formatter:on
 101     }
 102 
 103     /**
 104      * Descriptor for {@link ExceptionHandlerStub}. This stub is called by the
 105      * {@linkplain GraalHotSpotVMConfig#MARKID_EXCEPTION_HANDLER_ENTRY exception handler} in a
 106      * compiled method.
 107      */
 108     public static final ForeignCallDescriptor EXCEPTION_HANDLER = new ForeignCallDescriptor("exceptionHandler", void.class, Object.class, Word.class);
 109 
 110     /**
 111      * Descriptor for SharedRuntime::get_ic_miss_stub().
 112      */
 113     public static final ForeignCallDescriptor IC_MISS_HANDLER = new ForeignCallDescriptor("icMissHandler", void.class);
 114 
 115     /**
 116      * Descriptor for SharedRuntime::get_handle_wrong_method_stub().
 117      */
 118     public static final ForeignCallDescriptor WRONG_METHOD_HANDLER = new ForeignCallDescriptor("wrongMethodHandler", void.class);
 119 
 120     /**
 121      * Descriptor for {@link UnwindExceptionToCallerStub}. This stub is called by code generated
 122      * from {@link UnwindNode}.
 123      */
 124     public static final ForeignCallDescriptor UNWIND_EXCEPTION_TO_CALLER = new ForeignCallDescriptor("unwindExceptionToCaller", void.class, Object.class, Word.class);
 125 
 126     /**
 127      * Descriptor for the arguments when unwinding to an exception handler in a caller.
 128      */
 129     public static final ForeignCallDescriptor EXCEPTION_HANDLER_IN_CALLER = new ForeignCallDescriptor("exceptionHandlerInCaller", void.class, Object.class, Word.class);
 130 
 131     private final HotSpotGraalRuntimeProvider runtime;
 132 
 133     /**
 134      * @see AESCryptSubstitutions#encryptBlockStub(ForeignCallDescriptor, Word, Word, Pointer)
 135      */
 136     public static final ForeignCallDescriptor ENCRYPT_BLOCK = new ForeignCallDescriptor("encrypt_block", void.class, Word.class, Word.class, Pointer.class);
 137 
 138     /**
 139      * @see AESCryptSubstitutions#decryptBlockStub(ForeignCallDescriptor, Word, Word, Pointer)
 140      */
 141     public static final ForeignCallDescriptor DECRYPT_BLOCK = new ForeignCallDescriptor("decrypt_block", void.class, Word.class, Word.class, Pointer.class);
 142 
 143     /**
 144      * @see AESCryptSubstitutions#decryptBlockStub(ForeignCallDescriptor, Word, Word, Pointer)
 145      */
 146     public static final ForeignCallDescriptor DECRYPT_BLOCK_WITH_ORIGINAL_KEY = new ForeignCallDescriptor("decrypt_block_with_original_key", void.class, Word.class, Word.class, Pointer.class,
 147                     Pointer.class);
 148 
 149     /**
 150      * @see CipherBlockChainingSubstitutions#crypt
 151      */
 152     public static final ForeignCallDescriptor ENCRYPT = new ForeignCallDescriptor("encrypt", void.class, Word.class, Word.class, Pointer.class, Pointer.class, int.class);
 153 
 154     /**
 155      * @see CipherBlockChainingSubstitutions#crypt
 156      */
 157     public static final ForeignCallDescriptor DECRYPT = new ForeignCallDescriptor("decrypt", void.class, Word.class, Word.class, Pointer.class, Pointer.class, int.class);
 158 
 159     /**
 160      * @see CipherBlockChainingSubstitutions#crypt
 161      */
 162     public static final ForeignCallDescriptor DECRYPT_WITH_ORIGINAL_KEY = new ForeignCallDescriptor("decrypt_with_original_key", void.class, Word.class, Word.class, Pointer.class, Pointer.class,
 163                     int.class, Pointer.class);
 164 
 165     /**
 166      * @see BigIntegerSubstitutions#multiplyToLen
 167      */
 168     public static final ForeignCallDescriptor MULTIPLY_TO_LEN = new ForeignCallDescriptor("multiplyToLen", void.class, Word.class, int.class, Word.class, int.class, Word.class, int.class);
 169 
 170     public static void multiplyToLenStub(Word xAddr, int xlen, Word yAddr, int ylen, Word zAddr, int zLen) {
 171         multiplyToLenStub(HotSpotBackend.MULTIPLY_TO_LEN, xAddr, xlen, yAddr, ylen, zAddr, zLen);
 172     }
 173 
 174     @NodeIntrinsic(ForeignCallNode.class)
 175     private static native void multiplyToLenStub(@ConstantNodeParameter ForeignCallDescriptor descriptor, Word xIn, int xLen, Word yIn, int yLen, Word zIn, int zLen);
 176 
 177     /**
 178      * @see BigIntegerSubstitutions#mulAdd
 179      */
 180     public static final ForeignCallDescriptor MUL_ADD = new ForeignCallDescriptor("mulAdd", int.class, Word.class, Word.class, int.class, int.class, int.class);
 181 
 182     public static int mulAddStub(Word inAddr, Word outAddr, int newOffset, int len, int k) {
 183         return mulAddStub(HotSpotBackend.MUL_ADD, inAddr, outAddr, newOffset, len, k);
 184     }
 185 
 186     @NodeIntrinsic(ForeignCallNode.class)
 187     private static native int mulAddStub(@ConstantNodeParameter ForeignCallDescriptor descriptor, Word inAddr, Word outAddr, int newOffset, int len, int k);
 188 
 189     /**
 190      * @see BigIntegerSubstitutions#implMontgomeryMultiply
 191      */
 192     public static final ForeignCallDescriptor MONTGOMERY_MULTIPLY = new ForeignCallDescriptor("implMontgomeryMultiply", void.class, Word.class, Word.class, Word.class, int.class, long.class,
 193                     Word.class);
 194 
 195     public static void implMontgomeryMultiply(Word aAddr, Word bAddr, Word nAddr, int len, long inv, Word productAddr) {
 196         implMontgomeryMultiply(HotSpotBackend.MONTGOMERY_MULTIPLY, aAddr, bAddr, nAddr, len, inv, productAddr);
 197     }
 198 
 199     @NodeIntrinsic(ForeignCallNode.class)
 200     private static native void implMontgomeryMultiply(@ConstantNodeParameter ForeignCallDescriptor descriptor, Word aAddr, Word bAddr, Word nAddr, int len, long inv, Word productAddr);
 201 
 202     /**
 203      * @see BigIntegerSubstitutions#implMontgomerySquare
 204      */
 205     public static final ForeignCallDescriptor MONTGOMERY_SQUARE = new ForeignCallDescriptor("implMontgomerySquare", void.class, Word.class, Word.class, int.class, long.class, Word.class);
 206 
 207     public static void implMontgomerySquare(Word aAddr, Word nAddr, int len, long inv, Word productAddr) {
 208         implMontgomerySquare(HotSpotBackend.MONTGOMERY_SQUARE, aAddr, nAddr, len, inv, productAddr);
 209     }
 210 
 211     @NodeIntrinsic(ForeignCallNode.class)
 212     private static native void implMontgomerySquare(@ConstantNodeParameter ForeignCallDescriptor descriptor, Word aAddr, Word nAddr, int len, long inv, Word productAddr);
 213 
 214     /**
 215      * @see BigIntegerSubstitutions#implSquareToLen
 216      */
 217     public static final ForeignCallDescriptor SQUARE_TO_LEN = new ForeignCallDescriptor("implSquareToLen", void.class, Word.class, int.class, Word.class, int.class);
 218 
 219     public static void implSquareToLen(Word xAddr, int len, Word zAddr, int zLen) {
 220         implSquareToLen(SQUARE_TO_LEN, xAddr, len, zAddr, zLen);
 221     }
 222 
 223     @NodeIntrinsic(ForeignCallNode.class)
 224     private static native void implSquareToLen(@ConstantNodeParameter ForeignCallDescriptor descriptor, Word xAddr, int len, Word zAddr, int zLen);
 225 
 226     /**
 227      * @see SHASubstitutions#implCompress0
 228      */
 229     public static final ForeignCallDescriptor SHA_IMPL_COMPRESS = new ForeignCallDescriptor("shaImplCompress", void.class, Word.class, Object.class);
 230 
 231     public static void shaImplCompressStub(Word bufAddr, Object state) {
 232         shaImplCompressStub(HotSpotBackend.SHA_IMPL_COMPRESS, bufAddr, state);
 233     }
 234 
 235     @NodeIntrinsic(ForeignCallNode.class)
 236     private static native void shaImplCompressStub(@ConstantNodeParameter ForeignCallDescriptor descriptor, Word bufAddr, Object state);
 237 
 238     /**
 239      * @see SHA2Substitutions#implCompress0
 240      */
 241     public static final ForeignCallDescriptor SHA2_IMPL_COMPRESS = new ForeignCallDescriptor("sha2ImplCompress", void.class, Word.class, Object.class);
 242 
 243     public static void sha2ImplCompressStub(Word bufAddr, Object state) {
 244         sha2ImplCompressStub(HotSpotBackend.SHA2_IMPL_COMPRESS, bufAddr, state);
 245     }
 246 
 247     @NodeIntrinsic(ForeignCallNode.class)
 248     private static native void sha2ImplCompressStub(@ConstantNodeParameter ForeignCallDescriptor descriptor, Word bufAddr, Object state);
 249 
 250     /**
 251      * @see SHA5Substitutions#implCompress0
 252      */
 253     public static final ForeignCallDescriptor SHA5_IMPL_COMPRESS = new ForeignCallDescriptor("sha5ImplCompress", void.class, Word.class, Object.class);
 254 
 255     public static void sha5ImplCompressStub(Word bufAddr, Object state) {
 256         sha5ImplCompressStub(HotSpotBackend.SHA5_IMPL_COMPRESS, bufAddr, state);
 257     }
 258 
 259     @NodeIntrinsic(ForeignCallNode.class)
 260     private static native void sha5ImplCompressStub(@ConstantNodeParameter ForeignCallDescriptor descriptor, Word bufAddr, Object state);
 261 
 262     /**
 263      * @see org.graalvm.compiler.hotspot.meta.HotSpotUnsafeSubstitutions#copyMemory
 264      */
 265     public static final ForeignCallDescriptor UNSAFE_ARRAYCOPY = new ForeignCallDescriptor("unsafe_arraycopy", void.class, Word.class, Word.class, Word.class);
 266 
 267     public static void unsafeArraycopy(Word srcAddr, Word dstAddr, Word size) {
 268         unsafeArraycopyStub(HotSpotBackend.UNSAFE_ARRAYCOPY, srcAddr, dstAddr, size);
 269     }
 270 
 271     public static final ForeignCallDescriptor GENERIC_ARRAYCOPY = new ForeignCallDescriptor("generic_arraycopy", int.class, Word.class, int.class, Word.class, int.class, int.class);
 272 
 273     @NodeIntrinsic(ForeignCallNode.class)
 274     private static native void unsafeArraycopyStub(@ConstantNodeParameter ForeignCallDescriptor descriptor, Word srcAddr, Word dstAddr, Word size);
 275 
 276     /**
 277      * @see VMErrorNode
 278      */
 279     public static final ForeignCallDescriptor VM_ERROR = new ForeignCallDescriptor("vm_error", void.class, Object.class, Object.class, long.class);
 280 
 281     /**
 282      * New multi array stub that throws an {@link OutOfMemoryError} on allocation failure.
 283      */
 284     public static final ForeignCallDescriptor NEW_MULTI_ARRAY = new ForeignCallDescriptor("new_multi_array", Object.class, KlassPointer.class, int.class, Word.class);
 285 
 286     /**
 287      * New multi array stub that will return null on allocation failure.
 288      */
 289     public static final ForeignCallDescriptor NEW_MULTI_ARRAY_OR_NULL = new ForeignCallDescriptor("new_multi_array_or_null", Object.class, KlassPointer.class, int.class, Word.class);
 290 
 291     /**
 292      * New array stub that throws an {@link OutOfMemoryError} on allocation failure.
 293      */
 294     public static final ForeignCallDescriptor NEW_ARRAY = new ForeignCallDescriptor("new_array", Object.class, KlassPointer.class, int.class);
 295 
 296     /**
 297      * New array stub that will return null on allocation failure.
 298      */
 299     public static final ForeignCallDescriptor NEW_ARRAY_OR_NULL = new ForeignCallDescriptor("new_array_or_null", Object.class, KlassPointer.class, int.class);
 300 
 301     /**
 302      * New instance stub that throws an {@link OutOfMemoryError} on allocation failure.
 303      */
 304     public static final ForeignCallDescriptor NEW_INSTANCE = new ForeignCallDescriptor("new_instance", Object.class, KlassPointer.class);
 305 
 306     /**
 307      * New instance stub that will return null on allocation failure.
 308      */
 309     public static final ForeignCallDescriptor NEW_INSTANCE_OR_NULL = new ForeignCallDescriptor("new_instance_or_null", Object.class, KlassPointer.class);
 310 
 311     /**
 312      * @see ResolveConstantStubCall
 313      */
 314     public static final ForeignCallDescriptor RESOLVE_STRING_BY_SYMBOL = new ForeignCallDescriptor("resolve_string_by_symbol", Object.class, Word.class, Word.class);
 315 
 316     /**
 317      * @see ResolveConstantStubCall
 318      */
 319     public static final ForeignCallDescriptor RESOLVE_DYNAMIC_INVOKE = new ForeignCallDescriptor("resolve_dynamic_invoke", Object.class, Word.class);
 320 
 321     /**
 322      * @see ResolveConstantStubCall
 323      */
 324     public static final ForeignCallDescriptor RESOLVE_KLASS_BY_SYMBOL = new ForeignCallDescriptor("resolve_klass_by_symbol", Word.class, Word.class, Word.class);
 325 
 326     /**
 327      * @see ResolveConstantStubCall
 328      */
 329     public static final ForeignCallDescriptor INITIALIZE_KLASS_BY_SYMBOL = new ForeignCallDescriptor("initialize_klass_by_symbol", Word.class, Word.class, Word.class);
 330 
 331     /**
 332      * @see ResolveConstantStubCall
 333      */
 334     public static final ForeignCallDescriptor RESOLVE_METHOD_BY_SYMBOL_AND_LOAD_COUNTERS = new ForeignCallDescriptor("resolve_method_by_symbol_and_load_counters", Word.class, Word.class, Word.class,
 335                     Word.class);
 336 
 337     /**
 338      * Tiered support.
 339      */
 340     public static final ForeignCallDescriptor INVOCATION_EVENT = new ForeignCallDescriptor("invocation_event", void.class, MethodCountersPointer.class);
 341     public static final ForeignCallDescriptor BACKEDGE_EVENT = new ForeignCallDescriptor("backedge_event", void.class, MethodCountersPointer.class, int.class, int.class);
 342 
 343     public HotSpotBackend(HotSpotGraalRuntimeProvider runtime, HotSpotProviders providers) {
 344         super(providers);
 345         this.runtime = runtime;
 346     }
 347 
 348     public HotSpotGraalRuntimeProvider getRuntime() {
 349         return runtime;
 350     }
 351 
 352     /**
 353      * Performs any remaining initialization that was deferred until the {@linkplain #getRuntime()
 354      * runtime} object was initialized and this backend was registered with it.
 355      *
 356      * @param jvmciRuntime
 357      * @param options
 358      */
 359     public void completeInitialization(HotSpotJVMCIRuntime jvmciRuntime, OptionValues options) {
 360     }
 361 
 362     /**
 363      * Finds all the registers that are defined by some given LIR.
 364      *
 365      * @param lir the LIR to examine
 366      * @return the registers that are defined by or used as temps for any instruction in {@code lir}
 367      */
 368     protected final EconomicSet<Register> gatherDestroyedCallerRegisters(LIR lir) {
 369         final EconomicSet<Register> destroyedRegisters = EconomicSet.create(Equivalence.IDENTITY);
 370         ValueConsumer defConsumer = new ValueConsumer() {
 371 
 372             @Override
 373             public void visitValue(Value value, OperandMode mode, EnumSet<OperandFlag> flags) {
 374                 if (ValueUtil.isRegister(value)) {
 375                     final Register reg = ValueUtil.asRegister(value);
 376                     destroyedRegisters.add(reg);
 377                 }
 378             }
 379         };
 380         for (AbstractBlockBase<?> block : lir.codeEmittingOrder()) {
 381             if (block == null) {
 382                 continue;
 383             }
 384             for (LIRInstruction op : lir.getLIRforBlock(block)) {
 385                 if (op instanceof LabelOp) {
 386                     // Don't consider this as a definition
 387                 } else {
 388                     op.visitEachTemp(defConsumer);
 389                     op.visitEachOutput(defConsumer);
 390                 }
 391             }
 392         }
 393         return translateToCallerRegisters(destroyedRegisters);
 394     }
 395 
 396     /**
 397      * Updates a given stub with respect to the registers it destroys.
 398      * <p>
 399      * Any entry in {@code calleeSaveInfo} that {@linkplain SaveRegistersOp#supportsRemove()
 400      * supports} pruning will have {@code destroyedRegisters}
 401      * {@linkplain SaveRegistersOp#remove(EconomicSet) removed} as these registers are declared as
 402      * temporaries in the stub's {@linkplain ForeignCallLinkage linkage} (and thus will be saved by
 403      * the stub's caller).
 404      *
 405      * @param stub the stub to update
 406      * @param destroyedRegisters the registers destroyed by the stub
 407      * @param calleeSaveInfo a map from debug infos to the operations that provide their
 408      *            {@linkplain RegisterSaveLayout callee-save information}
 409      * @param frameMap used to {@linkplain FrameMap#offsetForStackSlot(StackSlot) convert} a virtual
 410      *            slot to a frame slot index
 411      */
 412     protected void updateStub(Stub stub, EconomicSet<Register> destroyedRegisters, EconomicMap<LIRFrameState, SaveRegistersOp> calleeSaveInfo, FrameMap frameMap) {
 413         stub.initDestroyedCallerRegisters(destroyedRegisters);
 414 
 415         MapCursor<LIRFrameState, SaveRegistersOp> cursor = calleeSaveInfo.getEntries();
 416         while (cursor.advance()) {
 417             SaveRegistersOp save = cursor.getValue();
 418             if (save.supportsRemove()) {
 419                 save.remove(destroyedRegisters);
 420             }
 421             if (cursor.getKey() != LIRFrameState.NO_STATE) {
 422                 cursor.getKey().debugInfo().setCalleeSaveInfo(save.getMap(frameMap));
 423             }
 424         }
 425     }
 426 
 427     @Override
 428     public HotSpotProviders getProviders() {
 429         return (HotSpotProviders) super.getProviders();
 430     }
 431 
 432     @Override
 433     public SuitesProvider getSuites() {
 434         return getProviders().getSuites();
 435     }
 436 
 437     protected void profileInstructions(LIR lir, CompilationResultBuilder crb) {
 438         if (HotSpotBackend.Options.ASMInstructionProfiling.getValue(lir.getOptions()) != null) {
 439             HotSpotInstructionProfiling.countInstructions(lir, crb.asm);
 440         }
 441     }
 442 
 443     @Override
 444     public CompiledCode createCompiledCode(ResolvedJavaMethod method,
 445                     CompilationRequest compilationRequest,
 446                     CompilationResult compResult,
 447                     boolean isDefault,
 448                     OptionValues options) {
 449         assert !isDefault || compResult.getName() == null : "a default nmethod should have a null name since it is associated with a Method*";
 450         HotSpotCompilationRequest compRequest = compilationRequest instanceof HotSpotCompilationRequest ? (HotSpotCompilationRequest) compilationRequest : null;
 451         return HotSpotCompiledCodeBuilder.createCompiledCode(getCodeCache(), method, compRequest, compResult, options);
 452     }
 453 
 454     @Override
 455     public CompilationIdentifier getCompilationIdentifier(ResolvedJavaMethod resolvedJavaMethod) {
 456         if (resolvedJavaMethod instanceof HotSpotResolvedJavaMethod) {
 457             HotSpotCompilationRequest request = new HotSpotCompilationRequest((HotSpotResolvedJavaMethod) resolvedJavaMethod, JVMCICompiler.INVOCATION_ENTRY_BCI, 0L);
 458             return new HotSpotCompilationIdentifier(request);
 459         }
 460         return super.getCompilationIdentifier(resolvedJavaMethod);
 461     }
 462 }