[Mlir-commits] [mlir] [mlir][arith] Fix issue where setOperand is called inside the fold fu… (PR #204506)

[Renato Golin]

rengolin wrote:

> That said, I still don't fully understand the rationale behind this design. What is the distinction between a folder and a canonicalization pattern now? Is a folder essentially just a canonicalization pattern that is restricted to modifying only the current operation?

There has been some recent discussions in that area:
https://discourse.llvm.org/t/canonicalization-in-mlir/89841

https://github.com/llvm/llvm-project/pull/204506