Chinese companies makes all sorts of CPUs, including MIPS based, X86 based and ARM based. Huawei even has its own ARM based CPU for cloud use, and its not named Kirin.
If TSMC is blocked from making chips for China, they lose their biggest customer, and they would lose their business, and go bankrupt--- chip making is not a very profitable business. If the chip maker goes bankrupt, ASML has no chipmaker to sell their machine too. And they go belly up as well. If lets say, you block Intel from selling to China, with China accounting for 80% of all Intel orders, Intel business and stock would collapse. You destroy the supply chain, you destroy the supplier and the manufacturer themselves right up the cycle.
Expect tech stocks to get a beating this month and next year if the trade wars continue, and these effects will dramatically affect the stock market.