Method GetMergeInst

source/opt/basic_block.cpp:57–70

}

const Instruction* BasicBlock::GetMergeInst() const {
  const Instruction* result = nullptr;
  // If it exists, the merge instruction immediately precedes the
  // terminator.
  auto iter = ctail();
  if (iter != cbegin()) {
    --iter;
    const auto opcode = iter->opcode();
    if (opcode == spv::Op::OpLoopMerge || opcode == spv::Op::OpSelectionMerge) {
      result = &*iter;
    }
  }
  return result;
}

Instruction* BasicBlock::GetMergeInst() {
  Instruction* result = nullptr;