Mercurial > hg > graal-compiler
view graal/com.oracle.graal.hotspot.sparc/src/com/oracle/graal/hotspot/sparc/SPARCHotSpotBackend.java @ 18813:498a56d8bb9b
Remove IterableNodeType from FloatingReadNode.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Sat, 10 Jan 2015 21:50:50 +0100 |
parents | 28e46ea20c93 |
children | 8d5c61b5cf67 |
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/* * Copyright (c) 2013, 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 static com.oracle.graal.api.code.CallingConvention.Type.*; import static com.oracle.graal.api.code.ValueUtil.*; import static com.oracle.graal.compiler.common.GraalOptions.*; import static com.oracle.graal.compiler.common.UnsafeAccess.*; import static com.oracle.graal.sparc.SPARC.*; import java.util.*; import com.oracle.graal.api.code.*; import com.oracle.graal.api.meta.*; import com.oracle.graal.asm.*; import com.oracle.graal.asm.sparc.*; import com.oracle.graal.asm.sparc.SPARCAssembler.Bpne; import com.oracle.graal.asm.sparc.SPARCAssembler.CC; import com.oracle.graal.asm.sparc.SPARCAssembler.Ldx; import com.oracle.graal.asm.sparc.SPARCAssembler.Save; import com.oracle.graal.asm.sparc.SPARCAssembler.Stx; import com.oracle.graal.asm.sparc.SPARCMacroAssembler.Cmp; import com.oracle.graal.asm.sparc.SPARCMacroAssembler.Nop; import com.oracle.graal.asm.sparc.SPARCMacroAssembler.RestoreWindow; import com.oracle.graal.asm.sparc.SPARCMacroAssembler.Setx; import com.oracle.graal.compiler.common.cfg.*; import com.oracle.graal.hotspot.*; import com.oracle.graal.hotspot.meta.HotSpotCodeCacheProvider.MarkId; 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.asm.*; import com.oracle.graal.lir.framemap.*; import com.oracle.graal.lir.gen.*; import com.oracle.graal.lir.sparc.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.spi.*; import com.oracle.graal.sparc.*; /** * HotSpot SPARC specific backend. */ public class SPARCHotSpotBackend extends HotSpotHostBackend { public SPARCHotSpotBackend(HotSpotGraalRuntimeProvider runtime, HotSpotProviders providers) { super(runtime, providers); } @Override public boolean shouldAllocateRegisters() { return true; } @Override public FrameMapBuilder newFrameMapBuilder(RegisterConfig registerConfig) { RegisterConfig registerConfigNonNull = registerConfig == null ? getCodeCache().getRegisterConfig() : registerConfig; return new SPARCFrameMapBuilder(newFrameMap(registerConfigNonNull), getCodeCache(), registerConfigNonNull); } @Override public FrameMap newFrameMap(RegisterConfig registerConfig) { return new SPARCFrameMap(getCodeCache(), registerConfig); } @Override public LIRGeneratorTool newLIRGenerator(CallingConvention cc, LIRGenerationResult lirGenRes) { return new SPARCHotSpotLIRGenerator(getProviders(), getRuntime().getConfig(), cc, lirGenRes); } @Override public LIRGenerationResult newLIRGenerationResult(LIR lir, FrameMapBuilder frameMapBuilder, ResolvedJavaMethod method, Object stub) { return new SPARCHotSpotLIRGenerationResult(lir, frameMapBuilder, stub); } @Override public NodeLIRBuilderTool newNodeLIRBuilder(StructuredGraph graph, LIRGeneratorTool lirGen) { return new SPARCHotSpotNodeLIRBuilder(getRuntime(), graph, lirGen); } /** * Emits code to do stack overflow checking. * * @param afterFrameInit specifies if the stack pointer has already been adjusted to allocate * the current frame */ protected static void emitStackOverflowCheck(CompilationResultBuilder crb, int pagesToBang, boolean afterFrameInit) { if (pagesToBang > 0) { SPARCMacroAssembler masm = (SPARCMacroAssembler) crb.asm; final int frameSize = crb.frameMap.totalFrameSize(); if (frameSize > 0) { int lastFramePage = frameSize / unsafe.pageSize(); // emit multiple stack bangs for methods with frames larger than a page for (int i = 0; i <= lastFramePage; i++) { int disp = (i + pagesToBang) * unsafe.pageSize(); if (afterFrameInit) { disp -= frameSize; } crb.blockComment("[stack overflow check]"); // Use SPARCAddress to get the final displacement including the stack bias. SPARCAddress address = new SPARCAddress(sp, -disp); if (SPARCAssembler.isSimm13(address.getDisplacement())) { new Stx(g0, address).emit(masm); } else { try (SPARCScratchRegister sc = SPARCScratchRegister.get()) { Register scratch = sc.getRegister(); new Setx(address.getDisplacement(), scratch).emit(masm); new Stx(g0, new SPARCAddress(sp, scratch)).emit(masm); } } } } } } public class HotSpotFrameContext implements FrameContext { final boolean isStub; HotSpotFrameContext(boolean isStub) { this.isStub = isStub; } public boolean hasFrame() { return true; } @Override public void enter(CompilationResultBuilder crb) { final int frameSize = crb.frameMap.totalFrameSize(); final int stackpoinerChange = -frameSize; SPARCMacroAssembler masm = (SPARCMacroAssembler) crb.asm; if (!isStub && pagesToBang > 0) { emitStackOverflowCheck(crb, pagesToBang, false); } if (SPARCAssembler.isSimm13(stackpoinerChange)) { new Save(sp, stackpoinerChange, sp).emit(masm); } else { try (SPARCScratchRegister sc = SPARCScratchRegister.get()) { Register scratch = sc.getRegister(); new Setx(stackpoinerChange, scratch).emit(masm); new Save(sp, scratch, sp).emit(masm); } } if (ZapStackOnMethodEntry.getValue()) { final int slotSize = 8; for (int i = 0; i < frameSize / slotSize; ++i) { // 0xC1C1C1C1 new Stx(g0, new SPARCAddress(sp, i * slotSize)).emit(masm); } } } @Override public void leave(CompilationResultBuilder crb) { SPARCMacroAssembler masm = (SPARCMacroAssembler) crb.asm; new RestoreWindow().emit(masm); } } @Override protected Assembler createAssembler(FrameMap frameMap) { return new SPARCMacroAssembler(getTarget(), frameMap.getRegisterConfig()); } @Override public CompilationResultBuilder newCompilationResultBuilder(LIRGenerationResult lirGenRes, FrameMap frameMap, CompilationResult compilationResult, CompilationResultBuilderFactory factory) { SPARCHotSpotLIRGenerationResult gen = (SPARCHotSpotLIRGenerationResult) lirGenRes; LIR lir = gen.getLIR(); assert gen.getDeoptimizationRescueSlot() == null || frameMap.frameNeedsAllocating() : "method that can deoptimize must have a frame"; Stub stub = gen.getStub(); Assembler masm = createAssembler(frameMap); // On SPARC we always use stack frames. HotSpotFrameContext frameContext = new HotSpotFrameContext(stub != null); CompilationResultBuilder crb = factory.createBuilder(getProviders().getCodeCache(), getProviders().getForeignCalls(), frameMap, masm, frameContext, compilationResult); crb.setTotalFrameSize(frameMap.totalFrameSize()); StackSlot deoptimizationRescueSlot = gen.getDeoptimizationRescueSlot(); if (deoptimizationRescueSlot != null && stub == null) { crb.compilationResult.setCustomStackAreaOffset(frameMap.offsetForStackSlot(deoptimizationRescueSlot)); } if (stub != null) { // Even on sparc we need to save floating point registers Set<Register> definedRegisters = gatherDefinedRegisters(lir); Map<LIRFrameState, SaveRegistersOp> calleeSaveInfo = gen.getCalleeSaveInfo(); updateStub(stub, definedRegisters, calleeSaveInfo, frameMap); } return crb; } @Override public void emitCode(CompilationResultBuilder crb, LIR lir, ResolvedJavaMethod installedCodeOwner) { stuffDelayedControlTransfers(lir); SPARCMacroAssembler masm = (SPARCMacroAssembler) crb.asm; FrameMap frameMap = crb.frameMap; RegisterConfig regConfig = frameMap.getRegisterConfig(); HotSpotVMConfig config = getRuntime().getConfig(); Label unverifiedStub = installedCodeOwner == null || installedCodeOwner.isStatic() ? null : new Label(); int i = 0; do { if (i > 0) { crb.reset(); lir.resetLabels(); resetDelayedControlTransfers(lir); } // Emit the prefix if (unverifiedStub != null) { MarkId.recordMark(crb, MarkId.UNVERIFIED_ENTRY); // We need to use JavaCall here because we haven't entered the frame yet. CallingConvention cc = regConfig.getCallingConvention(JavaCall, null, new JavaType[]{getProviders().getMetaAccess().lookupJavaType(Object.class)}, getTarget(), false); Register inlineCacheKlass = g5; // see MacroAssembler::ic_call try (SPARCScratchRegister sc = SPARCScratchRegister.get()) { Register scratch = sc.getRegister(); Register receiver = asRegister(cc.getArgument(0)); SPARCAddress src = new SPARCAddress(receiver, config.hubOffset); new Ldx(src, scratch).emit(masm); new Cmp(scratch, inlineCacheKlass).emit(masm); } new Bpne(CC.Xcc, unverifiedStub).emit(masm); new Nop().emit(masm); // delay slot } masm.align(config.codeEntryAlignment); MarkId.recordMark(crb, MarkId.OSR_ENTRY); MarkId.recordMark(crb, MarkId.VERIFIED_ENTRY); // Emit code for the LIR crb.emit(lir); } while (i++ < 1); HotSpotFrameContext frameContext = (HotSpotFrameContext) crb.frameContext; HotSpotForeignCallsProvider foreignCalls = getProviders().getForeignCalls(); if (!frameContext.isStub) { MarkId.recordMark(crb, MarkId.EXCEPTION_HANDLER_ENTRY); SPARCCall.directCall(crb, masm, foreignCalls.lookupForeignCall(EXCEPTION_HANDLER), null, false, null); MarkId.recordMark(crb, MarkId.DEOPT_HANDLER_ENTRY); SPARCCall.directCall(crb, masm, foreignCalls.lookupForeignCall(DEOPTIMIZATION_HANDLER), null, false, null); } else { // No need to emit the stubs for entries back into the method since // it has no calls that can cause such "return" entries } if (unverifiedStub != null) { masm.bind(unverifiedStub); try (SPARCScratchRegister sc = SPARCScratchRegister.get()) { Register scratch = sc.getRegister(); SPARCCall.indirectJmp(crb, masm, scratch, foreignCalls.lookupForeignCall(IC_MISS_HANDLER)); } } } private static void resetDelayedControlTransfers(LIR lir) { for (AbstractBlock<?> block : lir.codeEmittingOrder()) { for (LIRInstruction inst : lir.getLIRforBlock(block)) { if (inst instanceof SPARCDelayedControlTransfer) { ((SPARCDelayedControlTransfer) inst).resetState(); } } } } /** * Fix-up over whole LIR. * * @see #stuffDelayedControlTransfers(LIR, AbstractBlock) * @param l */ private static void stuffDelayedControlTransfers(LIR l) { for (AbstractBlock<?> b : l.codeEmittingOrder()) { stuffDelayedControlTransfers(l, b); } } /** * Tries to put DelayedControlTransfer instructions and DelayableLIRInstructions together. Also * it tries to move the DelayedLIRInstruction to the DelayedControlTransfer instruction, if * possible. */ private static void stuffDelayedControlTransfers(LIR l, AbstractBlock<?> block) { List<LIRInstruction> instructions = l.getLIRforBlock(block); if (instructions.size() >= 2) { LIRDependencyAccumulator acc = new LIRDependencyAccumulator(); SPARCDelayedControlTransfer delayedTransfer = null; int delayTransferPosition = -1; for (int i = instructions.size() - 1; i >= 0; i--) { LIRInstruction inst = instructions.get(i); boolean adjacent = delayTransferPosition - i == 1; if (!adjacent || inst.destroysCallerSavedRegisters() || leavesRegisterWindow(inst)) { delayedTransfer = null; } if (inst instanceof SPARCDelayedControlTransfer) { delayedTransfer = (SPARCDelayedControlTransfer) inst; acc.start(inst); delayTransferPosition = i; } else if (delayedTransfer != null) { boolean overlap = acc.add(inst); if (!overlap && inst instanceof SPARCTailDelayedLIRInstruction) { // We have found a non overlapping LIR instruction which can be delayed ((SPARCTailDelayedLIRInstruction) inst).setDelayedControlTransfer(delayedTransfer); delayedTransfer = null; // Removed the moving as it causes problems (Nullpointer exceptions) // if (!adjacent) { // // If not adjacent, we make it adjacent // instructions.remove(i); // instructions.add(delayTransferPosition - 1, inst); // } } } } } } private static boolean leavesRegisterWindow(LIRInstruction inst) { return inst instanceof SPARCLIRInstruction && ((SPARCLIRInstruction) inst).leavesRegisterWindow(); } /** * Accumulates inputs/outputs/temp/alive in a set along we walk back the LIRInstructions and * detects, if there is any overlap. In this way LIRInstructions can be detected, which can be * moved nearer to the DelayedControlTransfer instruction. */ private static class LIRDependencyAccumulator { private final Set<Object> inputs = new HashSet<>(10); private boolean overlap = false; private final InstructionValueConsumer valueConsumer = (instruction, value, mode, flags) -> { Object valueObject = value; if (isRegister(value)) { // Canonicalize registers valueObject = asRegister(value); } if (!inputs.add(valueObject)) { overlap = true; } }; public void start(LIRInstruction initial) { inputs.clear(); overlap = false; initial.visitEachInput(valueConsumer); initial.visitEachTemp(valueConsumer); initial.visitEachAlive(valueConsumer); } /** * Adds the inputs of lir instruction to the accumulator and returns, true if there was any * overlap of parameters. * * @param inst * @return true if an overlap was found */ public boolean add(LIRInstruction inst) { overlap = false; inst.visitEachOutput(valueConsumer); inst.visitEachTemp(valueConsumer); inst.visitEachInput(valueConsumer); inst.visitEachAlive(valueConsumer); return overlap; } } }