From 74f3dc3776e77f5478204eeeca1fa05395a62ff6 Mon Sep 17 00:00:00 2001
From: Jiacheng Huang <huangjiacheng0709@outlook.com>
Date: Wed, 13 May 2026 14:39:02 +0800
Subject: [PATCH 1/2] feat: add `nll_loss2d` base

---
 src/base/nll_loss2d.h | 57 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 57 insertions(+)
 create mode 100644 src/base/nll_loss2d.h

diff --git a/src/base/nll_loss2d.h b/src/base/nll_loss2d.h
new file mode 100644
index 000000000..fef9a4c10
--- /dev/null
+++ b/src/base/nll_loss2d.h
@@ -0,0 +1,57 @@
+#ifndef INFINI_OPS_BASE_NLL_LOSS2D_H_
+#define INFINI_OPS_BASE_NLL_LOSS2D_H_
+
+#include "operator.h"
+
+namespace infini::ops {
+
+class NllLoss2d : public Operator<NllLoss2d> {
+ public:
+  NllLoss2d(const Tensor input, const Tensor target, const int64_t reduction,
+            const int64_t ignore_index, Tensor out)
+      : input_shape_{input.shape()},
+        input_strides_{input.strides()},
+        input_type_{input.dtype()},
+        target_shape_{target.shape()},
+        target_strides_{target.strides()},
+        target_type_{target.dtype()},
+        out_shape_{out.shape()},
+        out_strides_{out.strides()},
+        out_type_{out.dtype()},
+        reduction_{reduction},
+        ignore_index_{ignore_index},
+        device_index_{out.device().index()} {}
+
+  virtual void operator()(const Tensor input, const Tensor target,
+                          const int64_t reduction, const int64_t ignore_index,
+                          Tensor out) const = 0;
+
+ protected:
+  Tensor::Shape input_shape_;
+
+  Tensor::Strides input_strides_;
+
+  DataType input_type_;
+
+  Tensor::Shape target_shape_;
+
+  Tensor::Strides target_strides_;
+
+  DataType target_type_;
+
+  Tensor::Shape out_shape_;
+
+  Tensor::Strides out_strides_;
+
+  DataType out_type_;
+
+  int64_t reduction_{};
+
+  int64_t ignore_index_{};
+
+  int device_index_{0};
+};
+
+}  // namespace infini::ops
+
+#endif
\ No newline at end of file

From d43b1b2c51320101aa38ff3793e3c6c5c9d9ca8b Mon Sep 17 00:00:00 2001
From: Jiacheng Huang <huangjiacheng0709@outlook.com>
Date: Mon, 18 May 2026 19:52:08 +0800
Subject: [PATCH 2/2] fix: add trailing newline to base header

---
 src/base/nll_loss2d.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/base/nll_loss2d.h b/src/base/nll_loss2d.h
index fef9a4c10..cf2eca0bf 100644
--- a/src/base/nll_loss2d.h
+++ b/src/base/nll_loss2d.h
@@ -54,4 +54,4 @@ class NllLoss2d : public Operator<NllLoss2d> {
 
 }  // namespace infini::ops
 
-#endif
\ No newline at end of file
+#endif