| // 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_BREAK_IF_H_ |
| #define SRC_TINT_LANG_CORE_IR_BREAK_IF_H_ |
| |
| #include "src/tint/lang/core/ir/terminator.h" |
| #include "src/tint/lang/core/ir/value.h" |
| #include "src/tint/utils/rtti/castable.h" |
| |
| // Forward declarations |
| namespace tint::ir { |
| class Loop; |
| } // namespace tint::ir |
| |
| namespace tint::ir { |
| |
| /// A break-if iteration instruction. |
| class BreakIf : public utils::Castable<BreakIf, Terminator> { |
| public: |
| /// The offset in Operands() for the condition |
| static constexpr size_t kConditionOperandOffset = 0; |
| |
| /// The base offset in Operands() for the arguments |
| static constexpr size_t kArgsOperandOffset = 1; |
| |
| /// Constructor |
| /// @param condition the break condition |
| /// @param loop the loop containing the break-if |
| /// @param args the MultiInBlock arguments |
| BreakIf(Value* condition, ir::Loop* loop, utils::VectorRef<Value*> args = utils::Empty); |
| ~BreakIf() override; |
| |
| /// @returns the MultiInBlock arguments |
| utils::Slice<Value* const> Args() override { |
| return operands_.Slice().Offset(kArgsOperandOffset); |
| } |
| |
| /// @returns the break condition |
| Value* Condition() { return operands_[kConditionOperandOffset]; } |
| |
| /// @returns the loop containing the break-if |
| ir::Loop* Loop() { return loop_; } |
| |
| /// @returns the friendly name for the instruction |
| std::string_view FriendlyName() override { return "break-if"; } |
| |
| private: |
| ir::Loop* loop_ = nullptr; |
| }; |
| |
| } // namespace tint::ir |
| |
| #endif // SRC_TINT_LANG_CORE_IR_BREAK_IF_H_ |