Examples with JavaConstant jdk.vm.ci.meta.JavaConstant used on opensource projects

Example 16 with JavaConstant

use of jdk.vm.ci.meta.JavaConstant in project graal by oracle.

the class AMD64ArithmeticLIRGenerator method emitShift.

private Variable emitShift(AMD64Shift op, OperandSize size, Value a, Value b) {
    Variable result = getLIRGen().newVariable(LIRKind.combine(a, b).changeType(a.getPlatformKind()));
    AllocatableValue input = getLIRGen().asAllocatable(a);
    if (isJavaConstant(b)) {
        JavaConstant c = asJavaConstant(b);
        if (c.asLong() == 1) {
            getLIRGen().append(new AMD64Unary.MOp(op.m1Op, size, result, input));
        } else {
            /*
                 * c is implicitly masked to 5 or 6 bits by the CPU, so casting it to (int) is
                 * always correct, even without the NumUtil.is32bit() test.
                 */
            getLIRGen().append(new AMD64Binary.ConstOp(op.miOp, size, result, input, (int) c.asLong()));
        }
    } else {
        getLIRGen().emitMove(RCX_I, b);
        getLIRGen().append(new AMD64ShiftOp(op.mcOp, size, result, input, RCX_I));
    }
    return result;
}

Example 17 with JavaConstant

use of jdk.vm.ci.meta.JavaConstant in project graal by oracle.

the class AMD64ArithmeticLIRGenerator method emitCompareOp.

@Override
public void emitCompareOp(AMD64Kind cmpKind, Variable left, Value right) {
    OperandSize size;
    switch(cmpKind) {
        case BYTE:
            size = BYTE;
            break;
        case WORD:
            size = WORD;
            break;
        case DWORD:
            size = DWORD;
            break;
        case QWORD:
            size = QWORD;
            break;
        case SINGLE:
            getLIRGen().append(new AMD64BinaryConsumer.Op(SSEOp.UCOMIS, PS, left, getLIRGen().asAllocatable(right)));
            return;
        case DOUBLE:
            getLIRGen().append(new AMD64BinaryConsumer.Op(SSEOp.UCOMIS, PD, left, getLIRGen().asAllocatable(right)));
            return;
        default:
            throw GraalError.shouldNotReachHere("unexpected kind: " + cmpKind);
    }
    if (isConstantValue(right)) {
        Constant c = LIRValueUtil.asConstant(right);
        if (JavaConstant.isNull(c)) {
            getLIRGen().append(new AMD64BinaryConsumer.Op(TEST, size, left, left));
            return;
        } else if (c instanceof VMConstant) {
            VMConstant vc = (VMConstant) c;
            if (size == DWORD && !GeneratePIC.getValue(getOptions())) {
                getLIRGen().append(new AMD64BinaryConsumer.VMConstOp(CMP.getMIOpcode(DWORD, false), left, vc));
            } else {
                getLIRGen().append(new AMD64BinaryConsumer.DataOp(CMP.getRMOpcode(size), size, left, vc));
            }
            return;
        } else if (c instanceof JavaConstant) {
            JavaConstant jc = (JavaConstant) c;
            if (jc.isDefaultForKind()) {
                AMD64RMOp op = size == BYTE ? TESTB : TEST;
                getLIRGen().append(new AMD64BinaryConsumer.Op(op, size, left, left));
                return;
            } else if (NumUtil.is32bit(jc.asLong())) {
                getLIRGen().append(new AMD64BinaryConsumer.ConstOp(CMP, size, left, (int) jc.asLong()));
                return;
            }
        }
    }
    // fallback: load, then compare
    getLIRGen().append(new AMD64BinaryConsumer.Op(CMP.getRMOpcode(size), size, left, getLIRGen().asAllocatable(right)));
}

Example 18 with JavaConstant

use of jdk.vm.ci.meta.JavaConstant in project graal by oracle.

the class AMD64NodeMatchRules method emitIntegerTestBranchMemory.

private ComplexMatchResult emitIntegerTestBranchMemory(IfNode x, ValueNode value, LIRLowerableAccess access) {
    LabelRef trueLabel = getLIRBlock(x.trueSuccessor());
    LabelRef falseLabel = getLIRBlock(x.falseSuccessor());
    double trueLabelProbability = x.probability(x.trueSuccessor());
    AMD64Kind kind = getMemoryKind(access);
    OperandSize size = kind == AMD64Kind.QWORD ? QWORD : DWORD;
    if (value.isConstant()) {
        JavaConstant constant = value.asJavaConstant();
        if (constant != null && kind == AMD64Kind.QWORD && !NumUtil.isInt(constant.asLong())) {
            // Only imm32 as long
            return null;
        }
        return builder -> {
            AMD64AddressValue address = (AMD64AddressValue) operand(access.getAddress());
            gen.append(new AMD64BinaryConsumer.MemoryConstOp(AMD64MIOp.TEST, size, address, (int) constant.asLong(), getState(access)));
            gen.append(new BranchOp(Condition.EQ, trueLabel, falseLabel, trueLabelProbability));
            return null;
        };
    } else {
        return builder -> {
            AMD64AddressValue address = (AMD64AddressValue) operand(access.getAddress());
            gen.append(new AMD64BinaryConsumer.MemoryRMOp(AMD64RMOp.TEST, size, gen.asAllocatable(operand(value)), address, getState(access)));
            gen.append(new BranchOp(Condition.EQ, trueLabel, falseLabel, trueLabelProbability));
            return null;
        };
    }
}

Example 19 with JavaConstant

use of jdk.vm.ci.meta.JavaConstant in project graal by oracle.

the class AMD64NodeMatchRules method emitCompareBranchMemory.

protected ComplexMatchResult emitCompareBranchMemory(IfNode ifNode, CompareNode compare, ValueNode value, LIRLowerableAccess access) {
    Condition cond = compare.condition().asCondition();
    AMD64Kind kind = getMemoryKind(access);
    // For assertion checking
    boolean matchedAsConstant = false;
    if (value.isConstant()) {
        JavaConstant constant = value.asJavaConstant();
        if (constant != null) {
            if (kind == AMD64Kind.QWORD && !constant.getJavaKind().isObject() && !NumUtil.isInt(constant.asLong())) {
                // Only imm32 as long
                return null;
            }
            // A QWORD that can be encoded as int can be embedded as a constant
            matchedAsConstant = kind == AMD64Kind.QWORD && !constant.getJavaKind().isObject() && NumUtil.isInt(constant.asLong());
        }
        if (kind == AMD64Kind.DWORD) {
            // Any DWORD value should be embeddable as a constant
            matchedAsConstant = true;
        }
        if (kind.isXMM()) {
            ifNode.getDebug().log("Skipping constant compares for float kinds");
            return null;
        }
    }
    boolean matchedAsConstantFinal = matchedAsConstant;
    /*
         * emitCompareBranchMemory expects the memory on the right, so mirror the condition if
         * that's not true. It might be mirrored again the actual compare is emitted but that's ok.
         */
    Condition finalCondition = GraphUtil.unproxify(compare.getX()) == access ? cond.mirror() : cond;
    return new ComplexMatchResult() {

        @Override
        public Value evaluate(NodeLIRBuilder builder) {
            LabelRef trueLabel = getLIRBlock(ifNode.trueSuccessor());
            LabelRef falseLabel = getLIRBlock(ifNode.falseSuccessor());
            boolean unorderedIsTrue = compare.unorderedIsTrue();
            double trueLabelProbability = ifNode.probability(ifNode.trueSuccessor());
            Value other = operand(value);
            /*
                 * Check that patterns which were matched as a constant actually end up seeing a
                 * constant in the LIR.
                 */
            assert !matchedAsConstantFinal || !LIRValueUtil.isVariable(other) : "expected constant value " + value;
            AMD64AddressValue address = (AMD64AddressValue) operand(access.getAddress());
            getLIRGeneratorTool().emitCompareBranchMemory(kind, other, address, getState(access), finalCondition, unorderedIsTrue, trueLabel, falseLabel, trueLabelProbability);
            return null;
        }
    };
}

Example 20 with JavaConstant

use of jdk.vm.ci.meta.JavaConstant in project graal by oracle.

the class AArch64ArithmeticLIRGenerator method emitSignExtend.

@Override
public Value emitSignExtend(Value inputVal, int fromBits, int toBits) {
    LIRKind resultKind = getResultLirKind(toBits, inputVal);
    assert fromBits <= toBits && toBits <= 64;
    if (fromBits == toBits) {
        return inputVal;
    } else if (isJavaConstant(inputVal)) {
        JavaConstant javaConstant = asJavaConstant(inputVal);
        long constant;
        if (javaConstant.isNull()) {
            constant = 0;
        } else {
            constant = javaConstant.asLong();
        }
        int shiftCount = QWORD.getSizeInBytes() * 8 - fromBits;
        return new ConstantValue(resultKind, JavaConstant.forLong((constant << shiftCount) >> shiftCount));
    }
    Variable result = getLIRGen().newVariable(resultKind);
    getLIRGen().append(new AArch64SignExtendOp(result, getLIRGen().asAllocatable(inputVal), fromBits, toBits));
    return result;
}