Update loss.py

python/paddle/nn/functional/loss.py

@@ -1712,11 +1712,12 @@ def cross_entropy(input,
                                                  out.dtype)
                 if ignore_weight_mask.ndim > 1 and ignore_weight_mask.shape[
                         axis] == 1:
-                    ignore_weight_mask.squeeze_(axis)
+                    # TODO: Temporarily use squeeze instead of squeeze_
+                    ignore_weight_mask = paddle.squeeze(ignore_weight_mask, axis)
                 if axis != -1 and axis != valid_label.ndim - 1:
                     temp_perm = list(range(axis % valid_label.ndim)) \
                                 + list(range((axis % valid_label.ndim + 1) , valid_label.ndim)) \
-                                + [axis%valid_label.ndim]
+                                + [axis % valid_label.ndim]
                     weight_gather = _C_ops.gather_nd(
                         weight, valid_label.transpose(temp_perm))
                 else:
@@ -1828,9 +1829,9 @@ def cross_entropy(input,
             if ignore_weight_mask.ndim > 1 and ignore_weight_mask.shape[
                     axis] == 1:
                 ignore_weight_mask = paddle.squeeze(ignore_weight_mask, axis)
-            if axis != -1:
+            if axis != -1 and axis != valid_label.ndim - 1:
                 temp_perm = list(range(axis % valid_label.ndim)) \
-                            + list(range((axis + 1) % valid_label.ndim, valid_label.ndim)) \
+                            + list(range((axis % valid_label.ndim + 1), valid_label.ndim)) \
                             + [axis % valid_label.ndim]
                 weight_gather = paddle.gather_nd(
                     weight, paddle.transpose(valid_label, temp_perm))