| // Copyright 2023 The Tint Authors. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #ifndef SRC_TINT_LANG_CORE_IR_ACCESS_H_ |
| #define SRC_TINT_LANG_CORE_IR_ACCESS_H_ |
| |
| #include "src/tint/lang/core/ir/operand_instruction.h" |
| #include "src/tint/utils/rtti/castable.h" |
| |
| namespace tint::ir { |
| |
| /// An access instruction in the IR. |
| class Access : public utils::Castable<Access, OperandInstruction<3, 1>> { |
| public: |
| /// The offset in Operands() for the object being accessed |
| static constexpr size_t kObjectOperandOffset = 0; |
| |
| /// The base offset in Operands() for the access indices |
| static constexpr size_t kIndicesOperandOffset = 1; |
| |
| /// Constructor |
| /// @param result the result value |
| /// @param object the accessor object |
| /// @param indices the indices to access |
| Access(InstructionResult* result, Value* object, utils::VectorRef<Value*> indices); |
| ~Access() override; |
| |
| /// @returns the object used for the access |
| Value* Object() { return operands_[kObjectOperandOffset]; } |
| |
| /// Adds the given index to the end of the access chain |
| /// @param idx the index to add |
| void AddIndex(Value* idx) { AddOperand(operands_.Length(), idx); } |
| |
| /// @returns the accessor indices |
| utils::Slice<Value*> Indices() { return operands_.Slice().Offset(kIndicesOperandOffset); } |
| |
| /// @returns the friendly name for the instruction |
| std::string_view FriendlyName() override { return "access"; } |
| }; |
| |
| } // namespace tint::ir |
| |
| #endif // SRC_TINT_LANG_CORE_IR_ACCESS_H_ |