Function LookupOpcode

source/table2.cpp:168–181

}

spv_result_t LookupOpcode(spv::Op opcode, const InstructionDesc** desc) {
  // Metaphor: Look for the needle in the haystack.
  const InstructionDesc needle(opcode);
  auto where = std::lower_bound(
      kInstructionDesc.begin(), kInstructionDesc.end(), needle,
      [&](const InstructionDesc& lhs, const InstructionDesc& rhs) {
        return uint32_t(lhs.opcode) < uint32_t(rhs.opcode);
      });
  if (where != kInstructionDesc.end() && where->opcode == opcode) {
    *desc = &*where;
    return SPV_SUCCESS;
  }
  return SPV_ERROR_INVALID_LOOKUP;
}

spv_result_t LookupOpcode(const char* name, const InstructionDesc** desc) {
  // The comparison function knows to use 'name' string to compare against