1 // Copyright (c) 2015-2016 The Khronos Group Inc. 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 #ifndef SOURCE_INSTRUCTION_H_ 16 #define SOURCE_INSTRUCTION_H_ 17 18 #include <cstdint> 19 #include <vector> 20 21 #include "source/latest_version_spirv_header.h" 22 #include "spirv-tools/libspirv.h" 23 24 // Describes an instruction. 25 struct spv_instruction_t { 26 // Normally, both opcode and extInstType contain valid data. 27 // However, when the assembler parses !<number> as the first word in 28 // an instruction and opcode and extInstType are invalid. 29 SpvOp opcode; 30 spv_ext_inst_type_t extInstType; 31 32 // The Id of the result type, if this instruction has one. Zero otherwise. 33 uint32_t resultTypeId; 34 35 // The instruction, as a sequence of 32-bit words. 36 // For a regular instruction the opcode and word count are combined 37 // in words[0], as described in the SPIR-V spec. 38 // Otherwise, the first token was !<number>, and that number appears 39 // in words[0]. Subsequent elements are the result of parsing 40 // tokens in the alternate parsing mode as described in syntax.md. 41 std::vector<uint32_t> words; 42 }; 43 44 // Appends a word to an instruction, without checking for overflow. 45 inline void spvInstructionAddWord(spv_instruction_t* inst, uint32_t value) { 46 inst->words.push_back(value); 47 } 48 49 #endif // SOURCE_INSTRUCTION_H_ 50
