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Hello LLVM Devs, I am working on a target on which no SHL instruction is available. So wanted to expand it through MUL. But currently it is only possible to expand SHL for vector types. One possible reason I can think is because LLVM tries to optimize MUL to SHL in certain cases and that can make compiler co in loop or may end up generating wrong code. But I think SHL should be able to expanded

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