fix(dnn): fix dnn nchwxx elemwise performance

GitOrigin-RevId: 5a715d7b2abf187102de50bdb6826e3b45a648cd

dnn/src/arm_common/elemwise/binary/algo.h

@@ -11,7 +11,7 @@ namespace arm_common {
         }                                                                        \
         const char* name() const override {                                      \
             if (m_name.empty()) {                                                \
-                m_name = ssprintf("Elemwise::AlgoBinaryCase" #case);             \
+                m_name = ssprintf("Elemwise::AlgoBinaryCaseArmCommon" #case);    \
             }                                                                    \
             return m_name.c_str();                                               \
         }                                                                        \

dnn/src/fallback/elemwise/opr_impl.cpp

@@ -267,16 +267,6 @@ ElemwiseImpl::KernParam ElemwiseImpl::make_kern_param(ElemwiseImpl* opr) {
             return kern_param;
         }
 
-        if (is_vector(src0.layout) && is_broadcasted_3dim_like(src1.layout, binfo)) {
-            kern_param.broad_cast_type = BcastType::VEC_BCASTX0X;
-            return kern_param;
-        }
-
-        if (is_vector(src1.layout) && is_broadcasted_3dim_like(src0.layout, binfo)) {
-            kern_param.broad_cast_type = BcastType::BCASTX0X_VEC;
-            return kern_param;
-        }
-
         if (is_legal_layout_for_nhwc(src1.layout) &&
             is_NHWC_broadcasted_channel_like(src0.layout, binfo)) {
             kern_param.broad_cast_type = BcastType::BCAST111C_VEC;
@@ -302,6 +292,16 @@ ElemwiseImpl::KernParam ElemwiseImpl::make_kern_param(ElemwiseImpl* opr) {
             kern_param.broad_cast_type = BcastType::BCAST101xX_VEC;
             return kern_param;
         }
+
+        if (is_vector(src0.layout) && is_broadcasted_3dim_like(src1.layout, binfo)) {
+            kern_param.broad_cast_type = BcastType::VEC_BCASTX0X;
+            return kern_param;
+        }
+
+        if (is_vector(src1.layout) && is_broadcasted_3dim_like(src0.layout, binfo)) {
+            kern_param.broad_cast_type = BcastType::BCASTX0X_VEC;
+            return kern_param;
+        }
     } else if (opr->m_src->size() == 1) {
         kern_param.broad_cast_type = BcastType::VEC;
         kern_param.unary_elparam = opr->make_elemwise_op_param<1>();