8381809: Template Framework Library: add Float16Vector type #30997
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,107 @@ | ||
| /* | ||
| * Copyright (c) 2026, 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. | ||
| */ | ||
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| package compiler.lib.template_framework.library; | ||
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| import compiler.lib.generators.Generators; | ||
| import compiler.lib.generators.Generator; | ||
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| import compiler.lib.template_framework.DataName; | ||
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| /** | ||
| * The {@link Float16VectorType} is the {@link VectorElementType} that describes | ||
| * the lane type of a {@code Float16Vector}. | ||
| * | ||
| * <p>Float16 is <strong>not</strong> a Java primitive type and therefore does | ||
| * not appear in any of the scalar {@link PrimitiveType} lists. As a | ||
| * {@link VectorElementType} it appears in vector-lane-typed lists such as | ||
| * {@link CodeGenerationDataNameType#VECTOR_ELEMENT_TYPES} and | ||
| * {@link CodeGenerationDataNameType#FLOATING_VECTOR_ELEMENT_TYPES}, which are | ||
| * consumed by vector-only generators (e.g. {@code Operations.VECTOR_OPERATIONS}). | ||
| * | ||
| * <p>The carrier type for a {@code Float16Vector} lane is {@code short}; the | ||
| * element type token used in {@code VectorOperators.Conversion.of*} expressions | ||
| * and {@code Float16Vector.SPECIES_*} is {@code Float16}. | ||
| * | ||
| * <p>NaN handling note: there are multiple bit representations for NaN within | ||
| * {@code short}/{@code Float16}. Consumers comparing {@code short[]} carrier | ||
| * arrays should canonicalize via {@code Float.float16ToFloat} (which returns a | ||
| * canonical NaN) before structural comparison. | ||
| */ | ||
| public final class Float16VectorType implements VectorElementType { | ||
| private static final Generator<Short> GEN_FLOAT16 = Generators.G.float16s(); | ||
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| /** The singleton instance. */ | ||
| public static final Float16VectorType FLOAT16 = new Float16VectorType(); | ||
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| private Float16VectorType() {} | ||
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| @Override | ||
| public boolean isSubtypeOf(DataName.Type other) { | ||
| return other instanceof Float16VectorType; | ||
| } | ||
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| @Override | ||
| public String name() { | ||
| return "Float16"; | ||
| } | ||
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| @Override | ||
| public String carrierTypeName() { | ||
| return "short"; | ||
| } | ||
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| @Override | ||
| public String boxedTypeName() { | ||
| return "Float16"; | ||
| } | ||
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Comment on lines
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Contributor
There was a problem hiding this comment. So if I had an expression with this type, could I auto-box it, using |
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| @Override | ||
| public int byteSize() { | ||
| return 2; | ||
| } | ||
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| @Override | ||
| public boolean isFloating() { | ||
| return true; | ||
| } | ||
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| @Override | ||
| public String toString() { | ||
| // Used by Template `let(...)` hashtag substitution as a Java scalar | ||
| // type for a single lane. Float16 has no Java keyword, so we return | ||
| // the carrier ("short"), which is what Float16Vector.lane(int) returns | ||
| // and what Float16Vector.broadcast(SPECIES, ...) accepts. | ||
| return carrierTypeName(); | ||
| } | ||
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| @Override | ||
| public Object con() { | ||
| return "(short)" + GEN_FLOAT16.next(); | ||
| } | ||
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| @Override | ||
| public Object callLibraryRNG() { | ||
| return "LibraryRNG.nextFloat16()"; | ||
| } | ||
| } | ||
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I would remove the "only" on the last line. Because we may add it to other places later.