/*

 * Copyright (c) 2013, 2018, 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

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package org.graalvm.compiler.lir.amd64.vector;

import static jdk.vm.ci.code.ValueUtil.asRegister;

import static jdk.vm.ci.code.ValueUtil.isRegister;

import static jdk.vm.ci.code.ValueUtil.isStackSlot;

import static org.graalvm.compiler.asm.amd64.AVXKind.AVXSize.XMM;

import static org.graalvm.compiler.lir.LIRInstruction.OperandFlag.REG;

import static org.graalvm.compiler.lir.LIRInstruction.OperandFlag.STACK;

import org.graalvm.compiler.asm.amd64.AMD64Address;

import org.graalvm.compiler.asm.amd64.AVXKind;

import org.graalvm.compiler.debug.GraalError;

import org.graalvm.compiler.lir.LIRInstructionClass;

import org.graalvm.compiler.lir.asm.CompilationResultBuilder;

import jdk.vm.ci.amd64.AMD64;

import jdk.vm.ci.amd64.AMD64.CPUFeature;

import jdk.vm.ci.amd64.AMD64Kind;

import jdk.vm.ci.meta.AllocatableValue;

public class AMD64VectorShuffle {

        public static final LIRInstructionClass<IntToVectorOp> TYPE = LIRInstructionClass.create(IntToVectorOp.class);

        @Def({REG}) protected AllocatableValue result;

        @Use({REG, STACK}) protected AllocatableValue value;

        public IntToVectorOp(AllocatableValue result, AllocatableValue value) {

            super(TYPE);

            assert ((AMD64Kind) result.getPlatformKind()).getScalar().isInteger() : result.getPlatformKind();

            this.result = result;

            this.value = value;

        }

        @Override

            if (isRegister(value)) {

            } else {

                assert isStackSlot(value);

            }

        }

    }

        public static final LIRInstructionClass<LongToVectorOp> TYPE = LIRInstructionClass.create(LongToVectorOp.class);

        @Def({REG}) protected AllocatableValue result;

        @Use({REG, STACK}) protected AllocatableValue value;

        public LongToVectorOp(AllocatableValue result, AllocatableValue value) {

            super(TYPE);

            assert result.getPlatformKind() == AMD64Kind.V128_QWORD || result.getPlatformKind() == AMD64Kind.V256_QWORD;

            this.result = result;

            this.value = value;

        }

        @Override

            if (isRegister(value)) {

            } else {

                assert isStackSlot(value);

            }

        }

    }

        public static final LIRInstructionClass<ShuffleBytesOp> TYPE = LIRInstructionClass.create(ShuffleBytesOp.class);

        @Def({REG}) protected AllocatableValue result;

        @Use({REG}) protected AllocatableValue source;

        @Use({REG, STACK}) protected AllocatableValue selector;

        public ShuffleBytesOp(AllocatableValue result, AllocatableValue source, AllocatableValue selector) {

            super(TYPE);

            this.result = result;

            this.source = source;

            this.selector = selector;

        }

        @Override

            AMD64Kind kind = (AMD64Kind) result.getPlatformKind();

            if (isRegister(selector)) {

            } else {

                assert isStackSlot(selector);

            }

        }

    }

        public static final LIRInstructionClass<ConstShuffleBytesOp> TYPE = LIRInstructionClass.create(ConstShuffleBytesOp.class);

        @Def({REG}) protected AllocatableValue result;

        @Use({REG}) protected AllocatableValue source;

        private final byte[] selector;

        public ConstShuffleBytesOp(AllocatableValue result, AllocatableValue source, byte... selector) {

            super(TYPE);

            assert AVXKind.getRegisterSize(((AMD64Kind) result.getPlatformKind())).getBytes() == selector.length;

            this.result = result;

            this.source = source;

            this.selector = selector;

        }

        @Override

            AMD64Kind kind = (AMD64Kind) result.getPlatformKind();

            AMD64Address address = (AMD64Address) crb.recordDataReferenceInCode(selector, selector.length);

        }

    }

        public static final LIRInstructionClass<ShuffleWordOp> TYPE = LIRInstructionClass.create(ShuffleWordOp.class);

        private final VexRMIOp op;

        @Def({REG}) protected AllocatableValue result;

        @Use({REG, STACK}) protected AllocatableValue source;

        private final int selector;

        public ShuffleWordOp(VexRMIOp op, AllocatableValue result, AllocatableValue source, int selector) {

            super(TYPE);

            this.op = op;

            this.result = result;

            this.source = source;

            this.selector = selector;

        }

        @Override

            AMD64Kind kind = (AMD64Kind) source.getPlatformKind();

            if (isRegister(source)) {

            } else {

            }

        }

    }

        public static final LIRInstructionClass<ShuffleFloatOp> TYPE = LIRInstructionClass.create(ShuffleFloatOp.class);

        @Def({REG}) protected AllocatableValue result;

        @Use({REG}) protected AllocatableValue source1;

        @Use({REG, STACK}) protected AllocatableValue source2;

        private final int selector;

        public ShuffleFloatOp(AllocatableValue result, AllocatableValue source1, AllocatableValue source2, int selector) {

            super(TYPE);

            this.result = result;

            this.source1 = source1;

            this.source2 = source2;

            this.selector = selector;

        }

        @Override

            AMD64Kind kind = (AMD64Kind) result.getPlatformKind();

            VexRVMIOp op;

            switch (kind.getScalar()) {

                case SINGLE:

                    op = VSHUFPS;

                    break;

                case DOUBLE:

                    op = VSHUFPD;

                    break;

                default:

                    throw GraalError.shouldNotReachHere();

            }

            if (isRegister(source2)) {

            } else {

                assert isStackSlot(source2);

            }

        }

    }

        public static final LIRInstructionClass<Extract128Op> TYPE = LIRInstructionClass.create(Extract128Op.class);

        @Def({REG, STACK}) protected AllocatableValue result;

        @Use({REG}) protected AllocatableValue source;

        private final int selector;

        public Extract128Op(AllocatableValue result, AllocatableValue source, int selector) {

            super(TYPE);

            this.result = result;

            this.source = source;

            this.selector = selector;

        }

        @Override

            AMD64Kind kind = (AMD64Kind) source.getPlatformKind();

            VexMRIOp op;

            switch (kind.getScalar()) {

                case SINGLE:

                case DOUBLE:

                    op = VEXTRACTF128;

                    break;

                default:

                    AMD64 arch = (AMD64) crb.target.arch;

                    // if supported we want VEXTRACTI128

                    // on AVX1, we have to use VEXTRACTF128

                    op = arch.getFeatures().contains(CPUFeature.AVX2) ? VEXTRACTI128 : VEXTRACTF128;

                    break;

            }

            if (isRegister(result)) {

            } else {

                assert isStackSlot(result);

            }

        }

    }

        public static final LIRInstructionClass<Insert128Op> TYPE = LIRInstructionClass.create(Insert128Op.class);

        @Def({REG}) protected AllocatableValue result;

        @Use({REG}) protected AllocatableValue source1;

        @Use({REG, STACK}) protected AllocatableValue source2;

        private final int selector;

        public Insert128Op(AllocatableValue result, AllocatableValue source1, AllocatableValue source2, int selector) {

            super(TYPE);

            this.result = result;

            this.source1 = source1;

            this.source2 = source2;

            this.selector = selector;

        }

        @Override

            AMD64Kind kind = (AMD64Kind) result.getPlatformKind();

            VexRVMIOp op;

            switch (kind.getScalar()) {

                case SINGLE:

                case DOUBLE:

                    op = VINSERTF128;

                    break;

                default:

                    AMD64 arch = (AMD64) crb.target.arch;

                    // if supported we want VINSERTI128 - on AVX1, we have to use VINSERTF128.

                    // using instructions with an incorrect data type is possible but typically

                    // results in an additional overhead whenever the value is being accessed.

                    op = arch.getFeatures().contains(CPUFeature.AVX2) ? VINSERTI128 : VINSERTF128;

                    break;

            }

            if (isRegister(source2)) {

            } else {

                assert isStackSlot(source2);

            }

        }

    }

        public static final LIRInstructionClass<ExtractByteOp> TYPE = LIRInstructionClass.create(ExtractByteOp.class);

        @Def({REG}) protected AllocatableValue result;

        @Use({REG}) protected AllocatableValue vector;

        private final int selector;

        public ExtractByteOp(AllocatableValue result, AllocatableValue vector, int selector) {

            super(TYPE);

            assert result.getPlatformKind() == AMD64Kind.DWORD;

            assert ((AMD64Kind) vector.getPlatformKind()).getScalar() == AMD64Kind.BYTE;

            this.result = result;

            this.vector = vector;

            this.selector = selector;

        }

        @Override

        }

    }

        public static final LIRInstructionClass<ExtractShortOp> TYPE = LIRInstructionClass.create(ExtractShortOp.class);

        @Def({REG}) protected AllocatableValue result;

        @Use({REG}) protected AllocatableValue vector;

        private final int selector;

        public ExtractShortOp(AllocatableValue result, AllocatableValue vector, int selector) {

            super(TYPE);

            assert result.getPlatformKind() == AMD64Kind.DWORD;

            assert ((AMD64Kind) vector.getPlatformKind()).getScalar() == AMD64Kind.WORD;

            this.result = result;

            this.vector = vector;

            this.selector = selector;

        }

        @Override

        }

    }

        public static final LIRInstructionClass<ExtractIntOp> TYPE = LIRInstructionClass.create(ExtractIntOp.class);

        @Def({REG, STACK}) protected AllocatableValue result;

        @Use({REG}) protected AllocatableValue vector;

        private final int selector;

        public ExtractIntOp(AllocatableValue result, AllocatableValue vector, int selector) {

            super(TYPE);

            assert result.getPlatformKind() == AMD64Kind.DWORD;

            assert ((AMD64Kind) vector.getPlatformKind()).getScalar() == AMD64Kind.DWORD;

            this.result = result;

            this.vector = vector;

            this.selector = selector;

        }

        @Override

            if (isRegister(result)) {

                if (selector == 0) {

                } else {

                }

            } else {

                assert isStackSlot(result);

                if (selector == 0) {

                } else {

                }

            }

        }

    }

        public static final LIRInstructionClass<ExtractLongOp> TYPE = LIRInstructionClass.create(ExtractLongOp.class);

        @Def({REG, STACK}) protected AllocatableValue result;

        @Use({REG}) protected AllocatableValue vector;

        private final int selector;

        public ExtractLongOp(AllocatableValue result, AllocatableValue vector, int selector) {

            super(TYPE);

            assert result.getPlatformKind() == AMD64Kind.QWORD;

            assert ((AMD64Kind) vector.getPlatformKind()).getScalar() == AMD64Kind.QWORD;

            this.result = result;

            this.vector = vector;

            this.selector = selector;

        }

        @Override

            if (isRegister(result)) {

                if (selector == 0) {

                } else {

                }

            } else {

                assert isStackSlot(result);

                if (selector == 0) {

                } else {

                }

            }

        }

    }

}