From a38f326ff847ce1e2e4e7c141d5a50b7e24e201b Mon Sep 17 00:00:00 2001
From: Elena Zhelezina <elena.zhelezina@arm.com>
Date: Thu, 23 Jul 2026 13:29:54 +0100
Subject: [PATCH] Arm backend: Fix div.Scalar

Change-Id: Iec5dafaf1b8ae07f159d4870c7a7ee3bdab5c2df

Signed-off-by: Elena Zhelezina <elena.zhelezina@arm.com>
Change-Id: Ib87be6bc0795f2dadd38acc31aac1638068edc70
---
 backends/arm/quantizer/quantizer_support.py |  1 +
 backends/arm/test/ops/test_div.py           | 33 ++++++++++-----------
 2 files changed, 16 insertions(+), 18 deletions(-)

diff --git a/backends/arm/quantizer/quantizer_support.py b/backends/arm/quantizer/quantizer_support.py
index 855b7cd489b..59b6efb084e 100644
--- a/backends/arm/quantizer/quantizer_support.py
+++ b/backends/arm/quantizer/quantizer_support.py
@@ -168,6 +168,7 @@ def check_pattern(cls, pattern):
         (torch.ops.aten.zeros_like.default,),
         (torch.ops.aten._softmax.default,),
         (torch.ops.aten.softmax.int,),
+        (torch.ops.aten.div.Scalar,),
         (torch.ops.aten.div.Tensor,),
         (torch.ops.aten.div_.Tensor,),
         (torch.ops.aten.div.Tensor_mode,),
diff --git a/backends/arm/test/ops/test_div.py b/backends/arm/test/ops/test_div.py
index 3aaa7aa4ae0..f35b5ac13d3 100644
--- a/backends/arm/test/ops/test_div.py
+++ b/backends/arm/test/ops/test_div.py
@@ -8,7 +8,6 @@
 
 from typing import Optional, Tuple, Union
 
-import pytest
 import torch
 from executorch.backends.arm.test import common
 
@@ -181,29 +180,27 @@ def test_div_scalar_vgf_no_quant(test_data: input_t1):
     pipeline.run()
 
 
+aten_ops_quant = [
+    "torch.ops.aten.reciprocal.default",
+    "torch.ops.aten.mul.Tensor",
+]
+
+exir_ops_quant = [
+    "executorch_exir_dialects_edge__ops_aten_reciprocal_default",
+    "executorch_exir_dialects_edge__ops_aten_mul_Tensor",
+]
+
+
 @common.parametrize("test_data", test_data_suite_scalar)
-@pytest.mark.xfail(
-    reason=(
-        "Quantized div.Scalar is rewritten to div.Tensor after the initial "
-        "quantizer support match, so it misses DecomposeDivPass and remains "
-        "outside the VGF delegate. MLETORCH-2366"
-    ),
-    strict=True,
-)
 @common.SkipIfNoModelConverter
 def test_div_scalar_vgf_quant(test_data: input_t1):
-    """Test Tensor / Scalar division (VGF INT).
-
-    The quantized scalar path is rewritten before the ATen and should not be
-    checked as div.Scalar. We keep expected op lists empty, matching the
-    existing quantized div.Tensor test.
-
-    """
+    """Test Tensor / Scalar division (VGF INT)."""
     pipeline = VgfPipeline[input_t1](
         DivScalar(),
         test_data(),
-        [],
-        [],
+        aten_op=aten_ops_quant,
+        exir_op=exir_ops_quant,
         quantize=True,
+        use_to_edge_transform_and_lower=False,
     )
     pipeline.run()