package org.graalvm.compiler.core.amd64;
import static jdk.vm.ci.code.ValueUtil.isRegister;
import static org.graalvm.compiler.lir.LIRValueUtil.asConstant;
import static org.graalvm.compiler.lir.LIRValueUtil.isConstantValue;
import static org.graalvm.compiler.lir.LIRValueUtil.isStackSlotValue;
import org.graalvm.compiler.asm.amd64.AMD64Assembler;
import org.graalvm.compiler.core.common.NumUtil;
import org.graalvm.compiler.core.common.type.DataPointerConstant;
import org.graalvm.compiler.debug.GraalError;
import org.graalvm.compiler.lir.LIRInstruction;
import org.graalvm.compiler.lir.amd64.AMD64AddressValue;
import org.graalvm.compiler.lir.amd64.AMD64LIRInstruction;
import org.graalvm.compiler.lir.amd64.AMD64Move;
import org.graalvm.compiler.lir.amd64.AMD64Move.AMD64StackMove;
import org.graalvm.compiler.lir.amd64.AMD64Move.LeaDataOp;
import org.graalvm.compiler.lir.amd64.AMD64Move.LeaOp;
import org.graalvm.compiler.lir.amd64.AMD64Move.MoveFromConstOp;
import org.graalvm.compiler.lir.amd64.AMD64Move.MoveFromRegOp;
import org.graalvm.compiler.lir.amd64.AMD64Move.MoveToRegOp;
import jdk.vm.ci.amd64.AMD64Kind;
import jdk.vm.ci.code.Register;
import jdk.vm.ci.meta.AllocatableValue;
import jdk.vm.ci.meta.Constant;
import jdk.vm.ci.meta.JavaConstant;
import jdk.vm.ci.meta.Value;
public abstract class AMD64MoveFactory extends AMD64MoveFactoryBase {
public AMD64MoveFactory(BackupSlotProvider backupSlotProvider) {
super(backupSlotProvider);
}
@Override
public boolean canInlineConstant(Constant con) {
if (con instanceof JavaConstant) {
JavaConstant c = (JavaConstant) con;
switch (c.getJavaKind()) {
case Long:
return NumUtil.isInt(c.asLong());
case Object:
return c.isNull();
default:
return true;
}
}
return false;
}
@Override
public boolean allowConstantToStackMove(Constant constant) {
if (constant instanceof DataPointerConstant) {
return false;
}
if (constant instanceof JavaConstant && !AMD64Move.canMoveConst2Stack(((JavaConstant) constant))) {
return false;
}
return true;
}
@Override
public AMD64LIRInstruction createMove(AllocatableValue dst, Value src) {
if (src instanceof AMD64AddressValue) {
return new LeaOp(dst, (AMD64AddressValue) src, AMD64Assembler.OperandSize.QWORD);
} else if (isConstantValue(src)) {
return createLoad(dst, asConstant(src));
} else if (isRegister(src) || isStackSlotValue(dst)) {
return new MoveFromRegOp((AMD64Kind) dst.getPlatformKind(), dst, (AllocatableValue) src);
} else {
return new MoveToRegOp((AMD64Kind) dst.getPlatformKind(), dst, (AllocatableValue) src);
}
}
@Override
public AMD64LIRInstruction createStackMove(AllocatableValue result, AllocatableValue input, Register scratchRegister, AllocatableValue backupSlot) {
return new AMD64StackMove(result, input, scratchRegister, backupSlot);
}
@Override
public AMD64LIRInstruction createLoad(AllocatableValue dst, Constant src) {
if (src instanceof JavaConstant) {
return new MoveFromConstOp(dst, (JavaConstant) src);
} else if (src instanceof DataPointerConstant) {
return new LeaDataOp(dst, (DataPointerConstant) src);
} else {
throw GraalError.shouldNotReachHere(String.format("unsupported constant: %s", src));
}
}
@Override
public LIRInstruction createStackLoad(AllocatableValue result, Constant input) {
if (input instanceof JavaConstant) {
return new MoveFromConstOp(result, (JavaConstant) input);
} else {
throw GraalError.shouldNotReachHere(String.format("unsupported constant for stack load: %s", input));
}
}
}