[Mlir-commits] [mlir] [mlir][Python] remove stray nb::cast (PR #176299)

[Maksim Levental]

https://github.com/makslevental created https://github.com/llvm/llvm-project/pull/176299

In https://github.com/llvm/llvm-project/pull/155114 we removed `liveOperations` but forget this line which was being used to invalidate operations under a transform root, which currently isn't being used for anything. So remove. 

>From d972311361745abfc09df64e326b6525382d335c Mon Sep 17 00:00:00 2001
From: makslevental <maksim.levental at gmail.com>
Date: Thu, 15 Jan 2026 18:25:37 -0800
Subject: [PATCH] [mlir][Python] remove stray nb::cast

---
 mlir/lib/Bindings/Python/TransformInterpreter.cpp | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/mlir/lib/Bindings/Python/TransformInterpreter.cpp b/mlir/lib/Bindings/Python/TransformInterpreter.cpp
index a9f204ff9d0a5..b263e65ff8cf8 100644
--- a/mlir/lib/Bindings/Python/TransformInterpreter.cpp
+++ b/mlir/lib/Bindings/Python/TransformInterpreter.cpp
@@ -71,12 +71,6 @@ static void populateTransformInterpreterSubmodule(nb::module_ &m) {
          PyOperationBase &transformModule, const PyTransformOptions &options) {
         mlir::python::CollectDiagnosticsToStringScope scope(
             mlirOperationGetContext(transformRoot.getOperation()));
-
-        // Calling back into Python to invalidate everything under the payload
-        // root. This is awkward, but we don't have access to PyMlirContext
-        // object here otherwise.
-        nb::object obj = nb::cast(payloadRoot);
-
         MlirLogicalResult result = mlirTransformApplyNamedSequence(
             payloadRoot.getOperation(), transformRoot.getOperation(),
             transformModule.getOperation(), options.options);