llvm-project

45732b64 - [mlir][Transforms] Fix compile time regression in dialect conversion (#83023)

[mlir][Transforms] Fix compile time regression in dialect conversion (#83023) The dialect conversion does not directly erase ops that are replaced/erased with a rewriter. Instead, the op stays in place and is erased at the end if the dialect conversion succeeds. However, ops that were replaced/erased are ignored from that point on. #81757 introduced a compile time regression that made the check whether an op is ignored or not more expensive. Whether an op is ignored or not is queried many times throughout a dialect conversion, so the check must be fast. After this change, replaced ops are stored in the `ignoredOps` set. This also simplifies the dialect conversion a bit.