[Mlir-commits] [mlir] [mlir][python] Propagate error diagnostics when an op couldn't be created. (PR #169499)

[Benjamin Chetioui]

https://github.com/bchetioui created https://github.com/llvm/llvm-project/pull/169499

None

>From 1280a18d62b8c83f939ccffef92a6313dff26e33 Mon Sep 17 00:00:00 2001
From: Benjamin Chetioui <bchetioui at google.com>
Date: Tue, 25 Nov 2025 14:33:20 +0000
Subject: [PATCH] [mlir][python] Propagate error diagnostics when an op
 couldn't be created.

---
 mlir/lib/Bindings/Python/IRCore.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/mlir/lib/Bindings/Python/IRCore.cpp b/mlir/lib/Bindings/Python/IRCore.cpp
index b5720b7ad8b21..fd091eb8501a3 100644
--- a/mlir/lib/Bindings/Python/IRCore.cpp
+++ b/mlir/lib/Bindings/Python/IRCore.cpp
@@ -1608,9 +1608,10 @@ nb::object PyOperation::create(std::string_view name,
   }
 
   // Construct the operation.
+  PyMlirContext::ErrorCapture errors(location.getContext());
   MlirOperation operation = mlirOperationCreate(&state);
   if (!operation.ptr)
-    throw nb::value_error("Operation creation failed");
+    throw MLIRError("Operation creation failed", errors.take());
   PyOperationRef created =
       PyOperation::createDetached(location->getContext(), operation);
   maybeInsertOperation(created, maybeIp);