mirror of
https://github.com/KhronosGroup/SPIRV-Tools
synced 2024-11-27 13:50:07 +00:00
292 lines
10 KiB
C++
292 lines
10 KiB
C++
// Copyright (c) 2016 Google Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef LIBSPIRV_OPT_CONSTANTS_H_
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#define LIBSPIRV_OPT_CONSTANTS_H_
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#include <memory>
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#include <utility>
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#include <vector>
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#include "make_unique.h"
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#include "types.h"
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namespace spvtools {
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namespace opt {
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namespace analysis {
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// Class hierarchy to represent the normal constants defined through
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// OpConstantTrue, OpConstantFalse, OpConstant, OpConstantNull and
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// OpConstantComposite instructions.
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// TODO(qining): Add class for constants defined with OpConstantSampler.
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class Constant;
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class ScalarConstant;
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class IntConstant;
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class FloatConstant;
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class BoolConstant;
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class CompositeConstant;
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class StructConstant;
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class VectorConstant;
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class ArrayConstant;
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class NullConstant;
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// Abstract class for a SPIR-V constant. It has a bunch of As<subclass> methods,
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// which is used as a way to probe the actual <subclass>
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class Constant {
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public:
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Constant() = delete;
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virtual ~Constant() {}
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// Make a deep copy of this constant.
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virtual std::unique_ptr<Constant> Copy() const = 0;
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// reflections
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virtual ScalarConstant* AsScalarConstant() { return nullptr; }
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virtual IntConstant* AsIntConstant() { return nullptr; }
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virtual FloatConstant* AsFloatConstant() { return nullptr; }
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virtual BoolConstant* AsBoolConstant() { return nullptr; }
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virtual CompositeConstant* AsCompositeConstant() { return nullptr; }
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virtual StructConstant* AsStructConstant() { return nullptr; }
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virtual VectorConstant* AsVectorConstant() { return nullptr; }
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virtual ArrayConstant* AsArrayConstant() { return nullptr; }
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virtual NullConstant* AsNullConstant() { return nullptr; }
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virtual const ScalarConstant* AsScalarConstant() const { return nullptr; }
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virtual const IntConstant* AsIntConstant() const { return nullptr; }
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virtual const FloatConstant* AsFloatConstant() const { return nullptr; }
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virtual const BoolConstant* AsBoolConstant() const { return nullptr; }
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virtual const CompositeConstant* AsCompositeConstant() const {
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return nullptr;
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}
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virtual const StructConstant* AsStructConstant() const { return nullptr; }
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virtual const VectorConstant* AsVectorConstant() const { return nullptr; }
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virtual const ArrayConstant* AsArrayConstant() const { return nullptr; }
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virtual const NullConstant* AsNullConstant() const { return nullptr; }
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const analysis::Type* type() const { return type_; }
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protected:
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Constant(const analysis::Type* ty) : type_(ty) {}
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// The type of this constant.
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const analysis::Type* type_;
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};
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// Abstract class for scalar type constants.
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class ScalarConstant : public Constant {
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public:
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ScalarConstant() = delete;
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ScalarConstant* AsScalarConstant() override { return this; }
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const ScalarConstant* AsScalarConstant() const override { return this; }
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// Returns a const reference of the value of this constant in 32-bit words.
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virtual const std::vector<uint32_t>& words() const { return words_; }
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protected:
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ScalarConstant(const analysis::Type* ty, const std::vector<uint32_t>& w)
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: Constant(ty), words_(w) {}
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ScalarConstant(const analysis::Type* ty, std::vector<uint32_t>&& w)
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: Constant(ty), words_(std::move(w)) {}
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std::vector<uint32_t> words_;
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};
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// Integer type constant.
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class IntConstant : public ScalarConstant {
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public:
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IntConstant(const analysis::Integer* ty, const std::vector<uint32_t>& w)
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: ScalarConstant(ty, w) {}
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IntConstant(const analysis::Integer* ty, std::vector<uint32_t>&& w)
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: ScalarConstant(ty, std::move(w)) {}
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IntConstant* AsIntConstant() override { return this; }
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const IntConstant* AsIntConstant() const override { return this; }
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// Make a copy of this IntConstant instance.
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std::unique_ptr<IntConstant> CopyIntConstant() const {
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return MakeUnique<IntConstant>(type_->AsInteger(), words_);
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}
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std::unique_ptr<Constant> Copy() const override {
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return std::unique_ptr<Constant>(CopyIntConstant().release());
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}
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};
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// Float type constant.
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class FloatConstant : public ScalarConstant {
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public:
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FloatConstant(const analysis::Float* ty, const std::vector<uint32_t>& w)
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: ScalarConstant(ty, w) {}
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FloatConstant(const analysis::Float* ty, std::vector<uint32_t>&& w)
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: ScalarConstant(ty, std::move(w)) {}
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FloatConstant* AsFloatConstant() override { return this; }
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const FloatConstant* AsFloatConstant() const override { return this; }
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// Make a copy of this FloatConstant instance.
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std::unique_ptr<FloatConstant> CopyFloatConstant() const {
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return MakeUnique<FloatConstant>(type_->AsFloat(), words_);
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}
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std::unique_ptr<Constant> Copy() const override {
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return std::unique_ptr<Constant>(CopyFloatConstant().release());
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}
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};
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// Bool type constant.
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class BoolConstant : public ScalarConstant {
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public:
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BoolConstant(const analysis::Bool* ty, bool v)
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: ScalarConstant(ty, {static_cast<uint32_t>(v)}), value_(v) {}
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BoolConstant* AsBoolConstant() override { return this; }
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const BoolConstant* AsBoolConstant() const override { return this; }
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// Make a copy of this BoolConstant instance.
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std::unique_ptr<BoolConstant> CopyBoolConstant() const {
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return MakeUnique<BoolConstant>(type_->AsBool(), value_);
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}
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std::unique_ptr<Constant> Copy() const override {
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return std::unique_ptr<Constant>(CopyBoolConstant().release());
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}
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bool value() const { return value_; }
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private:
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bool value_;
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};
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// Abstract class for composite constants.
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class CompositeConstant : public Constant {
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public:
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CompositeConstant() = delete;
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CompositeConstant* AsCompositeConstant() override { return this; }
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const CompositeConstant* AsCompositeConstant() const override { return this; }
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// Returns a const reference of the components holded in this composite
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// constant.
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virtual const std::vector<const Constant*>& GetComponents() const {
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return components_;
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}
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protected:
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CompositeConstant(const analysis::Type* ty) : Constant(ty), components_() {}
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CompositeConstant(const analysis::Type* ty,
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const std::vector<const Constant*>& components)
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: Constant(ty), components_(components) {}
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CompositeConstant(const analysis::Type* ty,
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std::vector<const Constant*>&& components)
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: Constant(ty), components_(std::move(components)) {}
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std::vector<const Constant*> components_;
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};
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// Struct type constant.
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class StructConstant : public CompositeConstant {
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public:
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StructConstant(const analysis::Struct* ty) : CompositeConstant(ty) {}
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StructConstant(const analysis::Struct* ty,
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const std::vector<const Constant*>& components)
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: CompositeConstant(ty, components) {}
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StructConstant(const analysis::Struct* ty,
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std::vector<const Constant*>&& components)
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: CompositeConstant(ty, std::move(components)) {}
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StructConstant* AsStructConstant() override { return this; }
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const StructConstant* AsStructConstant() const override { return this; }
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// Make a copy of this StructConstant instance.
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std::unique_ptr<StructConstant> CopyStructConstant() const {
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return MakeUnique<StructConstant>(type_->AsStruct(), components_);
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}
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std::unique_ptr<Constant> Copy() const override {
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return std::unique_ptr<Constant>(CopyStructConstant().release());
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}
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};
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// Vector type constant.
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class VectorConstant : public CompositeConstant {
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public:
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VectorConstant(const analysis::Vector* ty)
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: CompositeConstant(ty), component_type_(ty->element_type()) {}
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VectorConstant(const analysis::Vector* ty,
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const std::vector<const Constant*>& components)
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: CompositeConstant(ty, components),
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component_type_(ty->element_type()) {}
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VectorConstant(const analysis::Vector* ty,
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std::vector<const Constant*>&& components)
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: CompositeConstant(ty, std::move(components)),
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component_type_(ty->element_type()) {}
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VectorConstant* AsVectorConstant() override { return this; }
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const VectorConstant* AsVectorConstant() const override { return this; }
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// Make a copy of this VectorConstant instance.
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std::unique_ptr<VectorConstant> CopyVectorConstant() const {
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auto another = MakeUnique<VectorConstant>(type_->AsVector());
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another->components_.insert(another->components_.end(), components_.begin(),
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components_.end());
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return another;
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}
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std::unique_ptr<Constant> Copy() const override {
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return std::unique_ptr<Constant>(CopyVectorConstant().release());
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}
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const analysis::Type* component_type() { return component_type_; }
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private:
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const analysis::Type* component_type_;
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};
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// Array type constant.
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class ArrayConstant : public CompositeConstant {
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public:
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ArrayConstant(const analysis::Array* ty) : CompositeConstant(ty) {}
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ArrayConstant(const analysis::Array* ty,
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const std::vector<const Constant*>& components)
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: CompositeConstant(ty, components) {}
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ArrayConstant(const analysis::Array* ty,
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std::vector<const Constant*>&& components)
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: CompositeConstant(ty, std::move(components)) {}
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ArrayConstant* AsArrayConstant() override { return this; }
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const ArrayConstant* AsArrayConstant() const override { return this; }
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// Make a copy of this ArrayConstant instance.
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std::unique_ptr<ArrayConstant> CopyArrayConstant() const {
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return MakeUnique<ArrayConstant>(type_->AsArray(), components_);
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}
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std::unique_ptr<Constant> Copy() const override {
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return std::unique_ptr<Constant>(CopyArrayConstant().release());
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}
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};
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// Null type constant.
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class NullConstant : public Constant {
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public:
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NullConstant(const analysis::Type* ty) : Constant(ty) {}
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NullConstant* AsNullConstant() override { return this; }
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const NullConstant* AsNullConstant() const override { return this; }
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// Make a copy of this NullConstant instance.
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std::unique_ptr<NullConstant> CopyNullConstant() const {
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return MakeUnique<NullConstant>(type_);
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}
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std::unique_ptr<Constant> Copy() const override {
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return std::unique_ptr<Constant>(CopyNullConstant().release());
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}
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};
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} // namespace analysis
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} // namespace opt
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} // namespace spvtools
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#endif // LIBSPIRV_OPT_CONSTANTS_H_
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