Mercurial > hg > graal-compiler
view graal/com.oracle.jvmci.hotspot.sparc/src/com/oracle/jvmci/hotspot/sparc/SPARCHotSpotRegisterConfig.java @ 21683:c74d3c9b9de7
Use a marker value in second slot of a two-slot value during parsing; improve assertion checking in FrameStateBuilder
author | Christian Wimmer <christian.wimmer@oracle.com> |
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date | Tue, 02 Jun 2015 18:25:16 -0700 |
parents | e0b5d4fcd929 |
children |
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/* * Copyright (c) 2013, 2014, 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.jvmci.hotspot.sparc; import com.oracle.jvmci.code.Architecture; import com.oracle.jvmci.code.TargetDescription; import com.oracle.jvmci.code.CallingConvention; import com.oracle.jvmci.code.CalleeSaveLayout; import com.oracle.jvmci.code.RegisterAttributes; import com.oracle.jvmci.code.StackSlot; import com.oracle.jvmci.code.RegisterConfig; import com.oracle.jvmci.code.Register; import com.oracle.jvmci.meta.Kind; import com.oracle.jvmci.meta.JavaType; import com.oracle.jvmci.meta.PlatformKind; import com.oracle.jvmci.meta.Value; import com.oracle.jvmci.meta.AllocatableValue; import com.oracle.jvmci.sparc.*; import static com.oracle.jvmci.sparc.SPARC.*; import java.util.*; import com.oracle.jvmci.code.CallingConvention.Type; import com.oracle.jvmci.common.*; import com.oracle.jvmci.hotspot.*; public class SPARCHotSpotRegisterConfig implements RegisterConfig { private final Architecture architecture; private final Register[] allocatable; private final RegisterAttributes[] attributesMap; @Override public Register[] getAllocatableRegisters() { return allocatable.clone(); } public Register[] filterAllocatableRegisters(PlatformKind kind, Register[] registers) { ArrayList<Register> list = new ArrayList<>(); for (Register reg : registers) { if (architecture.canStoreValue(reg.getRegisterCategory(), kind)) { // Special treatment for double precision // TODO: This is wasteful it uses only half of the registers as float. if (kind == Kind.Double) { if (reg.name.startsWith("d")) { list.add(reg); } } else if (kind == Kind.Float) { if (reg.name.startsWith("f")) { list.add(reg); } } else { list.add(reg); } } } Register[] ret = list.toArray(new Register[list.size()]); return ret; } @Override public RegisterAttributes[] getAttributesMap() { return attributesMap.clone(); } private final Register[] cpuCallerParameterRegisters = {o0, o1, o2, o3, o4, o5}; private final Register[] cpuCalleeParameterRegisters = {i0, i1, i2, i3, i4, i5}; private final Register[] fpuParameterRegisters = {f0, f1, f2, f3, f4, f5, f6, f7}; private final Register[] fpuDoubleParameterRegisters = {d0, null, d2, null, d4, null, d6, null}; // @formatter:off private final Register[] callerSaveRegisters = {g1, g2, g3, g4, g5, g6, g7, o0, o1, o2, o3, o4, o5, o7, 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 /** * Registers saved by the callee. This lists all L and I registers which are saved in the * register window. */ private final Register[] calleeSaveRegisters = {l0, l1, l2, l3, l4, l5, l6, l7, i0, i1, i2, i3, i4, i5, i6, i7}; private final CalleeSaveLayout csl; private static Register[] initAllocatable(boolean reserveForHeapBase) { Register[] registers = null; if (reserveForHeapBase) { // @formatter:off registers = new Register[]{ // TODO this is not complete // o7 cannot be used as register because it is always overwritten on call // and the current register handler would ignore this fact if the called // method still does not modify registers, in fact o7 is modified by the Call instruction // There would be some extra handlin necessary to be able to handle the o7 properly for local usage o0, o1, o2, o3, o4, o5, /*o6, o7,*/ l0, l1, l2, l3, l4, l5, l6, l7, i0, i1, i2, i3, i4, i5, /*i6,*/ /*i7,*/ //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 } else { // @formatter:off registers = new Register[]{ // TODO this is not complete o0, o1, o2, o3, o4, o5, /*o6, o7,*/ l0, l1, l2, l3, l4, l5, l6, l7, i0, i1, i2, i3, i4, i5, /*i6,*/ /*i7,*/ // 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 } return registers; } public SPARCHotSpotRegisterConfig(TargetDescription target, HotSpotVMConfig config) { this(target, initAllocatable(config.useCompressedOops)); } public SPARCHotSpotRegisterConfig(TargetDescription target, Register[] allocatable) { this.architecture = target.arch; csl = new CalleeSaveLayout(target, -1, -1, target.arch.getWordSize(), calleeSaveRegisters); this.allocatable = allocatable.clone(); attributesMap = RegisterAttributes.createMap(this, SPARC.allRegisters); } @Override public Register[] getCallerSaveRegisters() { return callerSaveRegisters; } @Override public boolean areAllAllocatableRegistersCallerSaved() { return false; } @Override public Register getRegisterForRole(int index) { throw new UnsupportedOperationException(); } @Override public CallingConvention getCallingConvention(Type type, JavaType returnType, JavaType[] parameterTypes, TargetDescription target, boolean stackOnly) { if (type == Type.JavaCall || type == Type.NativeCall) { return callingConvention(cpuCallerParameterRegisters, returnType, parameterTypes, type, target, stackOnly); } if (type == Type.JavaCallee) { return callingConvention(cpuCalleeParameterRegisters, returnType, parameterTypes, type, target, stackOnly); } throw JVMCIError.shouldNotReachHere(); } public Register[] getCallingConventionRegisters(Type type, Kind kind) { if (architecture.canStoreValue(FPUs, kind) || architecture.canStoreValue(FPUd, kind)) { return fpuParameterRegisters; } assert architecture.canStoreValue(CPU, kind); return type == Type.JavaCallee ? cpuCalleeParameterRegisters : cpuCallerParameterRegisters; } private CallingConvention callingConvention(Register[] generalParameterRegisters, JavaType returnType, JavaType[] parameterTypes, Type type, TargetDescription target, boolean stackOnly) { AllocatableValue[] locations = new AllocatableValue[parameterTypes.length]; int currentGeneral = 0; int currentFloating = 0; int currentStackOffset = 0; for (int i = 0; i < parameterTypes.length; i++) { final Kind kind = parameterTypes[i].getKind(); switch (kind) { case Byte: case Boolean: case Short: case Char: case Int: case Long: case Object: if (!stackOnly && currentGeneral < generalParameterRegisters.length) { Register register = generalParameterRegisters[currentGeneral++]; locations[i] = register.asValue(target.getLIRKind(kind)); } break; case Double: if (!stackOnly && currentFloating < fpuParameterRegisters.length) { if (currentFloating % 2 != 0) { // Make register number even to be a double reg currentFloating++; } Register register = fpuDoubleParameterRegisters[currentFloating]; currentFloating += 2; // Only every second is a double register locations[i] = register.asValue(target.getLIRKind(kind)); } break; case Float: if (!stackOnly && currentFloating < fpuParameterRegisters.length) { Register register = fpuParameterRegisters[currentFloating++]; locations[i] = register.asValue(target.getLIRKind(kind)); } break; default: throw JVMCIError.shouldNotReachHere(); } if (locations[i] == null) { // Stack slot is always aligned to its size in bytes but minimum wordsize int typeSize = SPARC.spillSlotSize(target, kind); currentStackOffset = roundUp(currentStackOffset, typeSize); locations[i] = StackSlot.get(target.getLIRKind(kind.getStackKind()), currentStackOffset, !type.out); currentStackOffset += typeSize; } } Kind returnKind = returnType == null ? Kind.Void : returnType.getKind(); AllocatableValue returnLocation = returnKind == Kind.Void ? Value.ILLEGAL : getReturnRegister(returnKind, type).asValue(target.getLIRKind(returnKind.getStackKind())); return new CallingConvention(currentStackOffset, returnLocation, locations); } private static int roundUp(int number, int mod) { return ((number + mod - 1) / mod) * mod; } @Override public Register getReturnRegister(Kind kind) { return getReturnRegister(kind, Type.JavaCallee); } private static Register getReturnRegister(Kind kind, Type type) { switch (kind) { case Boolean: case Byte: case Char: case Short: case Int: case Long: case Object: return type == Type.JavaCallee ? i0 : o0; case Float: return f0; case Double: return d0; case Void: case Illegal: return null; default: throw new UnsupportedOperationException("no return register for type " + kind); } } @Override public Register getFrameRegister() { return sp; } public CalleeSaveLayout getCalleeSaveLayout() { return csl; } @Override public String toString() { return String.format("Allocatable: " + Arrays.toString(getAllocatableRegisters()) + "%n" + "CallerSave: " + Arrays.toString(getCallerSaveRegisters()) + "%n"); } }