[llvm] [InstCombine] Fold `(op x, ({z,s}ext (icmp eq x, C)))` to select (PR #89020)

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Thu Apr 18 08:23:01 PDT 2024

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goldsteinn wrote:

> Why does this PR contain simplification support for shl_sat?!

Ill split.

https://github.com/llvm/llvm-project/pull/89020

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