Mercurial > hg > graal-compiler
view graal/com.oracle.graal.hotspot.sparc/src/com/oracle/graal/hotspot/sparc/SPARCHotSpotLIRGenerator.java @ 21996:d333f1cf2c42
Re-enable imprecise write barriers on object access.
author | Roland Schatz <roland.schatz@oracle.com> |
---|---|
date | Wed, 17 Jun 2015 16:19:35 +0200 |
parents | 06cd28cccc64 |
children | 0e095e2c24e2 |
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/* * Copyright (c) 2013, 2015, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package com.oracle.graal.hotspot.sparc; import com.oracle.jvmci.code.ForeignCallLinkage; import com.oracle.jvmci.code.CallingConvention; import com.oracle.jvmci.code.StackSlotValue; import com.oracle.jvmci.code.VirtualStackSlot; import com.oracle.jvmci.code.StackSlot; import com.oracle.jvmci.code.Register; import com.oracle.jvmci.code.RegisterValue; import com.oracle.jvmci.meta.JavaConstant; import com.oracle.jvmci.meta.DeoptimizationAction; import com.oracle.jvmci.meta.Kind; import com.oracle.jvmci.meta.DeoptimizationReason; import com.oracle.jvmci.meta.PlatformKind; import com.oracle.jvmci.meta.LIRKind; import com.oracle.jvmci.meta.Value; import com.oracle.jvmci.meta.AllocatableValue; import com.oracle.jvmci.sparc.*; import static com.oracle.jvmci.code.ValueUtil.*; import static com.oracle.jvmci.sparc.SPARC.*; import static com.oracle.graal.hotspot.HotSpotBackend.*; import static com.oracle.graal.hotspot.HotSpotGraalRuntime.*; import java.util.*; import com.oracle.graal.compiler.common.calc.*; import com.oracle.graal.compiler.common.spi.*; import com.oracle.graal.compiler.sparc.*; import com.oracle.graal.hotspot.*; import com.oracle.graal.hotspot.debug.*; import com.oracle.graal.hotspot.meta.*; import com.oracle.graal.hotspot.stubs.*; import com.oracle.graal.lir.*; import com.oracle.graal.lir.StandardOp.SaveRegistersOp; import com.oracle.graal.lir.gen.*; import com.oracle.graal.lir.sparc.*; import com.oracle.graal.lir.sparc.SPARCMove.CompareAndSwapOp; import com.oracle.graal.lir.sparc.SPARCMove.LoadOp; import com.oracle.graal.lir.sparc.SPARCMove.NullCheckOp; import com.oracle.graal.lir.sparc.SPARCMove.StoreConstantOp; import com.oracle.graal.lir.sparc.SPARCMove.StoreOp; import com.oracle.jvmci.common.*; import com.oracle.jvmci.hotspot.*; import com.oracle.jvmci.hotspot.HotSpotVMConfig.CompressEncoding; public class SPARCHotSpotLIRGenerator extends SPARCLIRGenerator implements HotSpotLIRGenerator { final HotSpotVMConfig config; private HotSpotLockStack lockStack; private LIRFrameState currentRuntimeCallInfo; public SPARCHotSpotLIRGenerator(HotSpotProviders providers, HotSpotVMConfig config, CallingConvention cc, LIRGenerationResult lirGenRes) { this(new DefaultLIRKindTool(providers.getCodeCache().getTarget().wordKind), providers, config, cc, lirGenRes); } protected SPARCHotSpotLIRGenerator(LIRKindTool lirKindTool, HotSpotProviders providers, HotSpotVMConfig config, CallingConvention cc, LIRGenerationResult lirGenRes) { super(lirKindTool, providers, cc, lirGenRes); assert config.basicLockSize == 8; this.config = config; } @Override public HotSpotProviders getProviders() { return (HotSpotProviders) super.getProviders(); } /** * The slot reserved for storing the original return address when a frame is marked for * deoptimization. The return address slot in the callee is overwritten with the address of a * deoptimization stub. */ private StackSlot deoptimizationRescueSlot; @Override public StackSlotValue getLockSlot(int lockDepth) { return getLockStack().makeLockSlot(lockDepth); } private HotSpotLockStack getLockStack() { assert lockStack != null; return lockStack; } protected void setLockStack(HotSpotLockStack lockStack) { assert this.lockStack == null; this.lockStack = lockStack; } @Override public boolean needOnlyOopMaps() { // Stubs only need oop maps return getStub() != null; } public Stub getStub() { return ((SPARCHotSpotLIRGenerationResult) getResult()).getStub(); } @Override public void beforeRegisterAllocation() { super.beforeRegisterAllocation(); boolean hasDebugInfo = getResult().getLIR().hasDebugInfo(); if (hasDebugInfo) { ((SPARCHotSpotLIRGenerationResult) getResult()).setDeoptimizationRescueSlot(((SPARCFrameMapBuilder) getResult().getFrameMapBuilder()).allocateDeoptimizationRescueSlot()); } } @Override protected void emitForeignCallOp(ForeignCallLinkage linkage, Value result, Value[] arguments, Value[] temps, LIRFrameState info) { currentRuntimeCallInfo = info; super.emitForeignCallOp(linkage, result, arguments, temps, info); } @Override public Variable emitForeignCall(ForeignCallLinkage linkage, LIRFrameState state, Value... args) { HotSpotForeignCallLinkage hotspotLinkage = (HotSpotForeignCallLinkage) linkage; Variable result; LIRFrameState deoptInfo = null; if (hotspotLinkage.canDeoptimize()) { deoptInfo = state; assert deoptInfo != null || getStub() != null; } if (linkage.destroysRegisters() || hotspotLinkage.needsJavaFrameAnchor()) { HotSpotRegistersProvider registers = getProviders().getRegisters(); Register thread = registers.getThreadRegister(); Value threadTemp = newVariable(LIRKind.value(Kind.Long)); Register stackPointer = registers.getStackPointerRegister(); append(new SPARCHotSpotCRuntimeCallPrologueOp(config.threadLastJavaSpOffset(), thread, stackPointer, threadTemp)); result = super.emitForeignCall(hotspotLinkage, deoptInfo, args); append(new SPARCHotSpotCRuntimeCallEpilogueOp(config.threadLastJavaSpOffset(), config.threadLastJavaPcOffset(), config.threadJavaFrameAnchorFlagsOffset(), thread, threadTemp)); } else { result = super.emitForeignCall(hotspotLinkage, deoptInfo, args); } return result; } @Override public void emitReturn(Value input) { AllocatableValue operand = Value.ILLEGAL; if (input != null) { operand = resultOperandFor(input.getLIRKind()); emitMove(operand, input); } append(new SPARCHotSpotReturnOp(operand, getStub() != null, runtime().getConfig())); } @Override public void emitTailcall(Value[] args, Value address) { // append(new AMD64TailcallOp(args, address)); throw JVMCIError.unimplemented(); } @Override public void emitUnwind(Value exception) { ForeignCallLinkage linkage = getForeignCalls().lookupForeignCall(HotSpotBackend.UNWIND_EXCEPTION_TO_CALLER); CallingConvention linkageCc = linkage.getOutgoingCallingConvention(); assert linkageCc.getArgumentCount() == 2; RegisterValue exceptionParameter = (RegisterValue) linkageCc.getArgument(0); emitMove(exceptionParameter, exception); append(new SPARCHotSpotUnwindOp(exceptionParameter)); } private void moveDeoptValuesToThread(Value actionAndReason, Value speculation) { moveValueToThread(actionAndReason, config.pendingDeoptimizationOffset); moveValueToThread(speculation, config.pendingFailedSpeculationOffset); } private void moveValueToThread(Value v, int offset) { LIRKind wordKind = LIRKind.value(getProviders().getCodeCache().getTarget().wordKind); RegisterValue thread = getProviders().getRegisters().getThreadRegister().asValue(wordKind); SPARCAddressValue pendingDeoptAddress = new SPARCImmediateAddressValue(wordKind, thread, offset); append(new StoreOp(v.getKind(), pendingDeoptAddress, load(v), null)); } @Override public void emitDeoptimize(Value actionAndReason, Value speculation, LIRFrameState state) { moveDeoptValuesToThread(actionAndReason, speculation); append(new SPARCDeoptimizeOp(state)); } @Override public void emitDeoptimizeCaller(DeoptimizationAction action, DeoptimizationReason reason) { moveDeoptValuesToThread(getMetaAccess().encodeDeoptActionAndReason(action, reason, 0), JavaConstant.NULL_POINTER); append(new SPARCHotSpotDeoptimizeCallerOp()); } @Override public Variable emitLoad(LIRKind kind, Value address, LIRFrameState state) { SPARCAddressValue loadAddress = asAddressValue(address); Variable result = newVariable(kind); append(new LoadOp((Kind) kind.getPlatformKind(), result, loadAddress, state)); return result; } private static boolean canStoreConstant(JavaConstant c) { // SPARC can only store integer null constants (via g0) switch (c.getKind()) { case Float: case Double: return false; default: return c.isDefaultForKind(); } } @Override public boolean canInlineConstant(JavaConstant c) { if (HotSpotCompressedNullConstant.COMPRESSED_NULL.equals(c)) { return true; } else if (c instanceof HotSpotObjectConstant) { return ((HotSpotObjectConstant) c).isCompressed(); } else { return super.canInlineConstant(c); } } @Override public void emitStore(LIRKind kind, Value address, Value inputVal, LIRFrameState state) { SPARCAddressValue storeAddress = asAddressValue(address); if (isConstant(inputVal)) { JavaConstant c = asConstant(inputVal); if (canStoreConstant(c)) { append(new StoreConstantOp((Kind) kind.getPlatformKind(), storeAddress, c, state)); return; } } Variable input = load(inputVal); append(new StoreOp((Kind) kind.getPlatformKind(), storeAddress, input, state)); } public Variable emitCompareAndSwap(Value address, Value expectedValue, Value newValue, Value trueValue, Value falseValue) { LIRKind kind = newValue.getLIRKind(); assert kind.equals(expectedValue.getLIRKind()); Kind memKind = (Kind) kind.getPlatformKind(); Variable result = newVariable(newValue.getLIRKind()); append(new CompareAndSwapOp(result, asAllocatable(address), asAllocatable(expectedValue), asAllocatable(newValue))); return emitConditionalMove(memKind, expectedValue, result, Condition.EQ, true, trueValue, falseValue); } public void emitPrefetchAllocate(Value address) { SPARCAddressValue addr = asAddressValue(address); append(new SPARCPrefetchOp(addr, config.allocatePrefetchInstr)); } public StackSlot getDeoptimizationRescueSlot() { return deoptimizationRescueSlot; } @Override protected SPARCLIRInstruction createMove(AllocatableValue dst, Value src) { if (src instanceof JavaConstant) { return new SPARCHotSpotMove.HotSpotLoadConstantOp(dst, (JavaConstant) src); } else { return super.createMove(dst, src); } } @Override public void emitCompareBranch(PlatformKind cmpKind, Value x, Value y, Condition cond, boolean unorderedIsTrue, LabelRef trueDestination, LabelRef falseDestination, double trueDestinationProbability) { Value localX = x; Value localY = y; if (localX instanceof HotSpotObjectConstant) { localX = load(localX); } if (localY instanceof HotSpotObjectConstant) { localY = load(localY); } super.emitCompareBranch(cmpKind, localX, localY, cond, unorderedIsTrue, trueDestination, falseDestination, trueDestinationProbability); } @Override protected boolean emitCompare(PlatformKind cmpKind, Value a, Value b) { Value localA = a; Value localB = b; if (HotSpotCompressedNullConstant.COMPRESSED_NULL.equals(localA)) { localA = SPARC.g0.asValue(LIRKind.value(Kind.Int)); } else if (localA instanceof HotSpotObjectConstant) { localA = load(localA); } if (HotSpotCompressedNullConstant.COMPRESSED_NULL.equals(localB)) { localB = SPARC.g0.asValue(LIRKind.value(Kind.Int)); } else if (localB instanceof HotSpotObjectConstant) { localB = load(localB); } return super.emitCompare(cmpKind, localA, localB); } @Override public Value emitCompress(Value pointer, CompressEncoding encoding, boolean nonNull) { LIRKind inputKind = pointer.getLIRKind(); assert inputKind.getPlatformKind() == Kind.Long || inputKind.getPlatformKind() == Kind.Object; if (inputKind.isReference(0)) { // oop Variable result = newVariable(LIRKind.reference(Kind.Int)); append(new SPARCHotSpotMove.CompressPointer(result, asAllocatable(pointer), getProviders().getRegisters().getHeapBaseRegister().asValue(), encoding, nonNull)); return result; } else { // metaspace pointer Variable result = newVariable(LIRKind.value(Kind.Int)); AllocatableValue base = Value.ILLEGAL; if (encoding.base != 0) { base = emitMove(JavaConstant.forLong(encoding.base)); } append(new SPARCHotSpotMove.CompressPointer(result, asAllocatable(pointer), base, encoding, nonNull)); return result; } } @Override public Value emitUncompress(Value pointer, CompressEncoding encoding, boolean nonNull) { LIRKind inputKind = pointer.getLIRKind(); assert inputKind.getPlatformKind() == Kind.Int; if (inputKind.isReference(0)) { // oop Variable result = newVariable(LIRKind.reference(Kind.Object)); append(new SPARCHotSpotMove.UncompressPointer(result, asAllocatable(pointer), getProviders().getRegisters().getHeapBaseRegister().asValue(), encoding, nonNull)); return result; } else { // metaspace pointer Variable result = newVariable(LIRKind.value(Kind.Long)); AllocatableValue base = Value.ILLEGAL; if (encoding.base != 0) { base = emitMove(JavaConstant.forLong(encoding.base)); } append(new SPARCHotSpotMove.UncompressPointer(result, asAllocatable(pointer), base, encoding, nonNull)); return result; } } /** * @param savedRegisters the registers saved by this operation which may be subject to pruning * @param savedRegisterLocations the slots to which the registers are saved * @param supportsRemove determines if registers can be pruned */ protected SPARCSaveRegistersOp emitSaveRegisters(Register[] savedRegisters, StackSlotValue[] savedRegisterLocations, boolean supportsRemove) { SPARCSaveRegistersOp save = new SPARCSaveRegistersOp(savedRegisters, savedRegisterLocations, supportsRemove); append(save); return save; } public SaveRegistersOp emitSaveAllRegisters() { // We save all registers that were not saved by the save instruction. // @formatter:off Register[] savedRegisters = { // CPU g1, g3, g4, g5, // FPU, use only every second register as doubles are stored anyways f0, /*f1, */ f2, /*f3, */ f4, /*f5, */ f6, /*f7, */ f8, /*f9, */ f10, /*f11,*/ f12, /*f13,*/ f14, /*f15,*/ f16, /*f17,*/ f18, /*f19,*/ f20, /*f21,*/ f22, /*f23,*/ f24, /*f25,*/ f26, /*f27,*/ f28, /*f29,*/ f30, /*f31 */ d32, d34, d36, d38, d40, d42, d44, d46, d48, d50, d52, d54, d56, d58, d60, d62 }; // @formatter:on StackSlotValue[] savedRegisterLocations = new StackSlotValue[savedRegisters.length]; for (int i = 0; i < savedRegisters.length; i++) { PlatformKind kind = target().arch.getLargestStorableKind(savedRegisters[i].getRegisterCategory()); assert kind != Kind.Illegal; VirtualStackSlot spillSlot = getResult().getFrameMapBuilder().allocateSpillSlot(LIRKind.value(kind)); savedRegisterLocations[i] = spillSlot; } return emitSaveRegisters(savedRegisters, savedRegisterLocations, false); } public void emitLeaveCurrentStackFrame(SaveRegistersOp saveRegisterOp) { append(new SPARCHotSpotLeaveCurrentStackFrameOp()); } public void emitLeaveDeoptimizedStackFrame(Value frameSize, Value initialInfo) { append(new SPARCHotSpotLeaveDeoptimizedStackFrameOp()); } public void emitEnterUnpackFramesStackFrame(Value framePc, Value senderSp, Value senderFp, SaveRegistersOp saveRegisterOp) { Register thread = getProviders().getRegisters().getThreadRegister(); Variable framePcVariable = load(framePc); Variable senderSpVariable = load(senderSp); Variable scratchVariable = newVariable(LIRKind.value(getHostWordKind())); append(new SPARCHotSpotEnterUnpackFramesStackFrameOp(thread, config.threadLastJavaSpOffset(), config.threadLastJavaPcOffset(), framePcVariable, senderSpVariable, scratchVariable)); } public void emitLeaveUnpackFramesStackFrame(SaveRegistersOp saveRegisterOp) { Register thread = getProviders().getRegisters().getThreadRegister(); append(new SPARCHotSpotLeaveUnpackFramesStackFrameOp(thread, config.threadLastJavaSpOffset(), config.threadLastJavaPcOffset(), config.threadJavaFrameAnchorFlagsOffset())); } public void emitPushInterpreterFrame(Value frameSize, Value framePc, Value senderSp, Value initialInfo) { Variable frameSizeVariable = load(frameSize); Variable framePcVariable = load(framePc); Variable senderSpVariable = load(senderSp); Variable initialInfoVariable = load(initialInfo); append(new SPARCHotSpotPushInterpreterFrameOp(frameSizeVariable, framePcVariable, senderSpVariable, initialInfoVariable)); } public Value emitUncommonTrapCall(Value trapRequest, SaveRegistersOp saveRegisterOp) { ForeignCallLinkage linkage = getForeignCalls().lookupForeignCall(UNCOMMON_TRAP); Register threadRegister = getProviders().getRegisters().getThreadRegister(); Value threadTemp = newVariable(LIRKind.value(Kind.Long)); Register stackPointerRegister = getProviders().getRegisters().getStackPointerRegister(); append(new SPARCHotSpotCRuntimeCallPrologueOp(config.threadLastJavaSpOffset(), threadRegister, stackPointerRegister, threadTemp)); Variable result = super.emitForeignCall(linkage, null, threadRegister.asValue(LIRKind.value(Kind.Long)), trapRequest); append(new SPARCHotSpotCRuntimeCallEpilogueOp(config.threadLastJavaSpOffset(), config.threadLastJavaPcOffset(), config.threadJavaFrameAnchorFlagsOffset(), threadRegister, threadTemp)); Map<LIRFrameState, SaveRegistersOp> calleeSaveInfo = ((SPARCHotSpotLIRGenerationResult) getResult()).getCalleeSaveInfo(); assert currentRuntimeCallInfo != null; assert !calleeSaveInfo.containsKey(currentRuntimeCallInfo); calleeSaveInfo.put(currentRuntimeCallInfo, saveRegisterOp); return result; } @Override public Value emitDeoptimizationFetchUnrollInfoCall(SaveRegistersOp saveRegisterOp) { ForeignCallLinkage linkage = getForeignCalls().lookupForeignCall(FETCH_UNROLL_INFO); Register threadRegister = getProviders().getRegisters().getThreadRegister(); Value threadTemp = newVariable(LIRKind.value(Kind.Long)); Register stackPointerRegister = getProviders().getRegisters().getStackPointerRegister(); append(new SPARCHotSpotCRuntimeCallPrologueOp(config.threadLastJavaSpOffset(), threadRegister, stackPointerRegister, threadTemp)); Variable result = super.emitForeignCall(linkage, null, threadRegister.asValue(LIRKind.value(Kind.Long))); append(new SPARCHotSpotCRuntimeCallEpilogueOp(config.threadLastJavaSpOffset(), config.threadLastJavaPcOffset(), config.threadJavaFrameAnchorFlagsOffset(), threadRegister, threadTemp)); Map<LIRFrameState, SaveRegistersOp> calleeSaveInfo = ((SPARCHotSpotLIRGenerationResult) getResult()).getCalleeSaveInfo(); assert currentRuntimeCallInfo != null; assert !calleeSaveInfo.containsKey(currentRuntimeCallInfo); calleeSaveInfo.put(currentRuntimeCallInfo, saveRegisterOp); return result; } @Override public void emitNullCheck(Value address, LIRFrameState state) { PlatformKind kind = address.getPlatformKind(); if (kind == Kind.Int) { CompressEncoding encoding = config.getOopEncoding(); Value uncompressed = emitUncompress(address, encoding, false); append(new NullCheckOp(asAddressValue(uncompressed), state)); } else { super.emitNullCheck(address, state); } } @Override public LIRInstruction createBenchmarkCounter(String name, String group, Value increment) { if (BenchmarkCounters.enabled) { return new SPARCHotSpotCounterOp(name, group, increment, getProviders().getRegisters(), config); } else { return null; } } @Override public LIRInstruction createMultiBenchmarkCounter(String[] names, String[] groups, Value[] increments) { if (BenchmarkCounters.enabled) { return new SPARCHotSpotCounterOp(names, groups, increments, getProviders().getRegisters(), config); } else { return null; } } }