"update paddle enforce"

paddle/operators/mul_op.cc

@@ -68,16 +68,16 @@ class MulOpGrad : public framework::OperatorWithKernel {
                             "Input(Out@GRAD) should not be null");
     auto *x_grad = ctx.Output<Tensor>(framework::GradVarName("X"));
     auto *y_grad = ctx.Output<Tensor>(framework::GradVarName("Y"));
-    auto dim0 = ctx.Output<Tensor>(framework::GradVarName("X"))->dims();
-    auto dim1 = ctx.Output<Tensor>(framework::GradVarName("Y"))->dims();
+    auto x_dims = ctx.Output<Tensor>(framework::GradVarName("X"))->dims();
+    auto y_dims = ctx.Output<Tensor>(framework::GradVarName("Y"))->dims();
     auto out_dims = ctx.Input<Tensor>(framework::GradVarName("Out"))->dims();
-    PADDLE_ENFORCE(dim0[0] * dim1[0] == out_dims[0],
-                   "Out@GRAD[0] must equal to X[0] * Y[0]");
-    PADDLE_ENFORCE(dim0[1] * dim1[1] == out_dims[1],
-                   "Out@GRAD shape must equal to X[1] * Y[1]");
+    PADDLE_ENFORCE(x_dims[0] == out_dims[0],
+                   "Out@GRAD M X N must equal to X dims 0, M ");
+    PADDLE_ENFORCE(y_dims[1] == out_dims[1],
+                   "Out@GRAD M X N must equal to Y dims 1, N ");
 
-    x_grad->Resize(dim1);
-    y_grad->Resize(dim0);
+    x_grad->Resize(x_dims);
+    y_grad->Resize(y_dims);
   }
 };