[clang] [clang-tools-extra] [llvm] [MCP] Enhance MCP copy Instruction removal for special case(reapply) (PR #74239)

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LWenH wrote:

Since the corner case bug of https://github.com/llvm/llvm-project/issues/73512 has been addressed and fixed, and the original patch for this reapply https://github.com/llvm/llvm-project/pull/70778 has been approved, I try to recommit this patch :-)

https://github.com/llvm/llvm-project/pull/74239