!15951 [GraphKernel]add the attribute reduce_output_fuse to enable fuse for the reduce_output on Ascend

From: @hanhuifeng2020
Reviewed-by: @gaoxiong1,@dylangeng
Signed-off-by: @dylangeng

mindspore/_extends/graph_kernel/model/graph_split.py

@@ -685,6 +685,19 @@ class GraphSplitAscend(GraphSplitByPattern):
                     fused.append(a)
             return fused, True
 
+        def _reduce_output(dom):
+            if dom.pattern != PrimLib.REDUCE:
+                return None
+            op_attrs = dom.dom_op().attrs
+            if not op_attrs.get('reduce_output_fuse'):
+                return None
+            fused = []
+            for a, r in dom.out_relations.items():
+                if a.pattern <= PrimLib.BROADCAST and r <= PrimLib.BROADCAST and \
+                        dom.check_acyclic(a):
+                    fused.append(a)
+            return fused, False
+
         changed = True
         while changed:
             changed = self.fuse(_reshape)
@@ -695,6 +708,7 @@ class GraphSplitAscend(GraphSplitByPattern):
             changed = self.fuse(_broadcast_depth) or changed
             changed = self.fuse(_broadcast_width) or changed
             changed = self.fuse(_matmul_depth) or changed
+            changed = self.fuse(_reduce_output) or changed
         self.fuse(_transdata)
 
 

mindspore/_extends/graph_kernel/model/model_builder.py

@@ -147,7 +147,8 @@ class CompositeGraph:
                         for i in a['value']:
                             red_axis.append(i if i >= 0 else dim_size + i)
                     attr['reduce_axis'] = red_axis
-                    break
+                if a['name'] == "reduce_output_fuse":
+                    attr['reduce_output_fuse'] = a['value']
             return attr
 
         builder = GraphBuilder()