remove pattern parameter in callback

Author: PragmaTwice

mlir/lib/Bindings/Python/Rewrite.cpp

@@ -193,11 +193,11 @@ class PyRewritePatternSet {
     callbacks.destruct = [](void *userData) {
       nb::handle(static_cast<PyObject *>(userData)).dec_ref();
     };
-    callbacks.matchAndRewrite = [](MlirRewritePattern pattern, MlirOperation op,
+    callbacks.matchAndRewrite = [](MlirRewritePattern, MlirOperation op,
                                    MlirPatternRewriter rewriter,
                                    void *userData) -> MlirLogicalResult {
       nb::handle f(static_cast<PyObject *>(userData));
-      nb::object res = f(op, PyPatternRewriter(rewriter), pattern);
+      nb::object res = f(op, PyPatternRewriter(rewriter));
       return logicalResultFromObject(res);
     };
     MlirRewritePattern pattern = mlirOpRewritePattenCreate(

mlir/test/python/rewrite.py

@@ -15,12 +15,12 @@ def run(f):
 # CHECK-LABEL: TEST: testRewritePattern
 @run
 def testRewritePattern():
-    def to_muli(op, rewriter, pattern):
+    def to_muli(op, rewriter):
         with rewriter.ip:
             new_op = arith.muli(op.operands[0], op.operands[1], loc=op.location)
         rewriter.replace_op(op, new_op.owner)
 
-    def constant_1_to_2(op, rewriter, pattern):
+    def constant_1_to_2(op, rewriter):
         c = op.attributes["value"].value
         if c != 1:
             return True  # failed to match