!7166 gpu no broad cast kernel dims exceed

Merge pull request !7166 from chenweifeng/broadcast-grad-dims-exceed

mindspore/ccsrc/backend/kernel_compiler/gpu/math/broadcast_gpu_kernel.h

@@ -83,17 +83,23 @@ class BroadcastOpGpuKernel : public GpuKernel {
     rhs_shape_.resize(MAX_DIMS, 1);
     output_shape_.resize(MAX_DIMS, 1);
     for (size_t i = 0; i < shape3.size(); i++) {
-      output_shape_[i] = shape3[i];
+      if (need_broadcast_) {
+        output_shape_[i] = shape3[i];
+      }
       output_num_ *= shape3[i];
     }
     int lhs_offset = shape3.size() - shape1.size();
     for (size_t j = 0; j < shape1.size(); j++) {
-      lhs_shape_[j + lhs_offset] = shape1[j];
+      if (need_broadcast_) {
+        lhs_shape_[j + lhs_offset] = shape1[j];
+      }
       input1_num_ *= shape1[j];
     }
     int rhs_offset = shape3.size() - shape2.size();
     for (size_t k = 0; k < shape2.size(); k++) {
-      rhs_shape_[k + rhs_offset] = shape2[k];
+      if (need_broadcast_) {
+        rhs_shape_[k + rhs_offset] = shape2[k];
+      }
       input2_num_ *= shape2[k];
     }
 

mindspore/ccsrc/backend/kernel_compiler/gpu/math/broadcast_grad_gpu_kernel.h

@@ -78,17 +78,23 @@ class BroadcastOpGradGpuKernel : public GpuKernel {
     }
 
     for (size_t i = 0; i < shape3.size(); i++) {
-      dy_shape_[i] = shape3[i];
+      if (need_broadcast_) {
+        dy_shape_[i] = shape3[i];
+      }
       output_num_ *= shape3[i];
     }
     int x1_offset = shape3.size() - shape1.size();
     for (size_t i = 0; i < shape1.size(); i++) {
-      x1_shape_[i + x1_offset] = shape1[i];
+      if (need_broadcast_) {
+        x1_shape_[i + x1_offset] = shape1[i];
+      }
       input1_num_ *= shape1[i];
     }
     int x2_offset = shape3.size() - shape2.size();
     for (size_t i = 0; i < shape2.size(); i++) {
-      x2_shape_[i + x2_offset] = shape2[i];
+      if (need_broadcast_) {
+        x2_shape_[i + x2_offset] = shape2[i];
+      }
       input2_num_ *= shape2[i];
     }