add conditional compilation for tensor

paddle/framework/tensor.h

@@ -51,6 +51,7 @@ class Tensor {
         !(holder_->place() ==
           place) /* some versions of boost::variant don't have operator!= */
         || holder_->size() < numel_ * sizeof(T) + offset_) {
+#ifdef __CUDACC__
       switch (place.which()) {
         case 0:
           holder_.reset(new PlaceholderImpl<T, platform::GPUPlace>(
@@ -62,6 +63,10 @@ class Tensor {
               boost::get<platform::CPUPlace>(place), numel_ * sizeof(T)));
           break;
       }
+#else
+      holder_.reset(new PlaceholderImpl<T, platform::CPUPlace>(
+          boost::get<platform::CPUPlace>(place), numel_ * sizeof(T)));
+#endif
 
       offset_ = 0;
     }

paddle/framework/tensor_test.cc

@@ -72,7 +72,7 @@ TEST(Tensor, MutableData) {
     p2 = src_tensor.mutable_data<float>(make_ddim({2, 2}), CPUPlace());
     EXPECT_EQ(p1, p2);
   }
-    #ifdef __CUDACC__
+#ifdef __CUDACC__
   {
     Tensor src_tensor;
     float* p1 = nullptr;
@@ -94,7 +94,7 @@ TEST(Tensor, MutableData) {
     p2 = src_tensor.mutable_data<float>(make_ddim({2, 2}), GPUPlace());
     EXPECT_EQ(p1, p2);
   }
-    #endif
+#endif
 }
 
 TEST(Tensor, ShareDataFrom) {
@@ -123,7 +123,7 @@ TEST(Tensor, ShareDataFrom) {
     ASSERT_EQ(src_tensor.data<int>(), dst_tensor.data<int>());
   }
 
-  #ifdef __CUDACC__
+#ifdef __CUDACC__
   {
     Tensor src_tensor;
     Tensor dst_tensor;
@@ -131,7 +131,7 @@ TEST(Tensor, ShareDataFrom) {
     dst_tensor.ShareDataFrom<int>(src_tensor);
     ASSERT_EQ(src_tensor.data<int>(), dst_tensor.data<int>());
   }
-    #endif
+#endif
 }
 
 TEST(Tensor, Slice) {
@@ -160,7 +160,7 @@ TEST(Tensor, Slice) {
     EXPECT_EQ(src_data_address + 3 * 4 * 1 * sizeof(int), slice_data_address);
   }
 
-  #ifdef __CUDACC__
+#ifdef __CUDACC__
   {
     Tensor src_tensor;
     src_tensor.mutable_data<double>(make_ddim({6, 9}), GPUPlace());
@@ -182,7 +182,7 @@ TEST(Tensor, Slice) {
     EXPECT_EQ(slice_data_address, slice_mutable_data_address);
     EXPECT_EQ(src_data_address + 9 * 2 * sizeof(double), slice_data_address);
   }
-    #endif
+#endif
 }
 
 TEST(Tensor, CopyFrom) {