[llvm] [InstCombine] Remove some of the complexity-based canonicalization (PR #91185)

[Yingwei Zheng via llvm-commits]

dtcxzyw wrote:

> Can you run it? Ill try and get -stats to work locally and post them here.

I cannot run it as LLVM doesn't support the cost estimation of struct types :(


https://github.com/llvm/llvm-project/pull/91185