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https://gitee.com/openharmony/third_party_spirv-tools
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68 lines
2.8 KiB
C++
68 lines
2.8 KiB
C++
// Copyright (c) 2018 Google LLC
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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 SOURCE_OPT_REPLACE_INVALID_OPC_H_
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#define SOURCE_OPT_REPLACE_INVALID_OPC_H_
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#include <string>
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#include "source/opt/pass.h"
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namespace spvtools {
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namespace opt {
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// This pass will runs on shader modules only. It will replace the result of
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// instructions that are valid for shader modules, but not the current shader
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// stage, with a constant value. If the instruction does not have a return
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// value, the instruction will simply be deleted.
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class ReplaceInvalidOpcodePass : public Pass {
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public:
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const char* name() const override { return "replace-invalid-opcode"; }
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Status Process() override;
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private:
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// Returns the execution model that is used by every entry point in the
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// module. If more than one execution model is used in the module, then the
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// return value is spv::ExecutionModel::Max.
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spv::ExecutionModel GetExecutionModel();
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// Replaces all instructions in |function| that are invalid with execution
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// model |mode|, but valid for another shader model, with a special constant
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// value. See |GetSpecialConstant|.
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bool RewriteFunction(Function* function, spv::ExecutionModel mode);
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// Returns true if |inst| is valid for fragment shaders only.
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bool IsFragmentShaderOnlyInstruction(Instruction* inst);
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// Replaces all uses of the result of |inst|, if there is one, with the id of
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// a special constant. Then |inst| is killed. |inst| cannot be a block
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// terminator because the basic block will then become invalid. |inst| is no
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// longer valid after calling this function.
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void ReplaceInstruction(Instruction* inst, const char* source,
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uint32_t line_number, uint32_t column_number);
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// Returns the id of a constant with type |type_id|. The type must be an
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// integer, float, or vector. For scalar types, the hex representation of the
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// constant will be the concatenation of 0xDEADBEEF with itself until the
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// width of the type has been reached. For a vector, each element of the
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// constant will be constructed the same way.
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uint32_t GetSpecialConstant(uint32_t type_id);
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std::string BuildWarningMessage(spv::Op opcode);
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};
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} // namespace opt
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} // namespace spvtools
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#endif // SOURCE_OPT_REPLACE_INVALID_OPC_H_
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