message: Changed a use of APInt::getSignBit to APInt::getSignMask.
diff: @@ -2745,7 +2745,7 @@ bool Scalar::SignExtend(uint32_t sign_bit_pos) {
  if (max_bit_pos == sign_bit_pos)
  return true;
  else if (sign_bit_pos < (max_bit_pos - 1)) {
  - llvm::APInt sign_bit = llvm::APInt::getSignBit(sign_bit_pos + 1);
  + llvm::APInt sign_bit = llvm::APInt::getSignMask(sign_bit_pos + 1);
  llvm::APInt bitwize_and = m_integer & sign_bit;
  if (bitwize_and.getBoolValue()) {
  const llvm::APInt mask =
  