fix(aten::expand): Fix compiler warnings in the expand converter

Signed-off-by: Naren Dasan <naren@narendasan.com>
Signed-off-by: Naren Dasan <narens@nvidia.com>

Author: narendasan

core/conversion/converters/impl/expand.cpp

@@ -22,7 +22,7 @@ bool add_expand(ConversionCtx* ctx, const torch::jit::Node* n, nvinfer1::ITensor
       "Number of dimensions of the desired expansion must be greater than or equal to the number of input dimensions");
 
   // Validate the expansion. Eg: an input of [3, 1] can be expanded to [1, 3, 4] but not [3, 4, 1]
-  for (int i = expandedDims.nbDims - 1; i >= 0; --i) {
+  for (int64_t i = expandedDims.nbDims - 1; i >= 0; --i) {
     int64_t offset = expandedDims.nbDims - 1 - i;
     int64_t dim = input_dims.nbDims - 1 - offset;
     int64_t size = (dim >= 0) ? input_dims.d[dim] : 1;
@@ -41,10 +41,10 @@ bool add_expand(ConversionCtx* ctx, const torch::jit::Node* n, nvinfer1::ITensor
   if (num_expand_dims > 0) {
     nvinfer1::Dims reshape_dims;
     reshape_dims.nbDims = expandedDims.nbDims;
-    for (int i = 0; i < num_expand_dims; i++) {
+    for (int64_t i = 0; i < num_expand_dims; i++) {
       reshape_dims.d[i] = 1;
     }
-    for (int i = 0; i < input_dims.nbDims; i++) {
+    for (int64_t i = 0; i < input_dims.nbDims; i++) {
       reshape_dims.d[num_expand_dims + i] = input_dims.d[i];
     }
     // Add a reshape layer to expand dims
@@ -60,7 +60,7 @@ bool add_expand(ConversionCtx* ctx, const torch::jit::Node* n, nvinfer1::ITensor
 
   // Set the stride of non singleton dimension to 1
   std::vector<int64_t> strides_vec(expandedDims.nbDims, 0);
-  for (int i = 0; i < expandedDims.nbDims; i++) {
+  for (int64_t i = 0; i < expandedDims.nbDims; i++) {
     strides_vec[i] = (in->getDimensions().d[i] != 1);
   }
 
@@ -104,16 +104,16 @@ auto expand_registrations TRTORCH_UNUSED =
                     auto input_dims = in->getDimensions();
                     auto repeats = args[1].unwrapToIntList().vec();
                     TRTORCH_CHECK(
-                        repeats.size() >= input_dims.nbDims,
+                        static_cast<int64_t>(repeats.size()) >= input_dims.nbDims,
                         "Number of repeat dimensions cannot be smaller than number of input dimensions");
                     auto num_expand_dims = repeats.size() - input_dims.nbDims;
                     if (num_expand_dims > 0) {
                       nvinfer1::Dims reshape_dims;
                       reshape_dims.nbDims = repeats.size();
-                      for (int i = 0; i < num_expand_dims; i++) {
+                      for (size_t i = 0; i < num_expand_dims; i++) {
                         reshape_dims.d[i] = 1;
                       }
-                      for (int i = 0; i < input_dims.nbDims; i++) {
+                      for (int64_t i = 0; i < input_dims.nbDims; i++) {
                         reshape_dims.d[num_expand_dims + i] = input_dims.d[i];
                       }
                       // Add a reshape layer to expand dims
@@ -127,9 +127,9 @@ auto expand_registrations TRTORCH_UNUSED =
 
                     // Concat across all repeat axes.
                     // TODO: Implementation might not be performant. Explore other strategies to improve performance.
-                    for (int i = repeats.size() - 1; i >= 0; --i) {
+                    for (int64_t i = repeats.size() - 1; i >= 0; --i) {
                       std::vector<nvinfer1::ITensor*> tensors_vec;
-                      for (int j = 0; j < repeats[i]; j++) {
+                      for (int64_t j = 0; j < repeats[i]; j++) {
                         tensors_vec.push_back(in);
                       }
                       auto concat_layer = ctx->net->addConcatenation(tensors_vec.data(), tensors_vec.size());
@@ -139,7 +139,7 @@ auto expand_registrations TRTORCH_UNUSED =
 
                     auto out = ctx->AssociateValueAndTensor(n->outputs()[0], in);
 
-                    LOG_DEBUG("Repeat layer output tensor shape: " << in->getDimensions());
+                    LOG_DEBUG("Repeat layer output tensor shape: " << out->getDimensions());
 
                     return true;
                   }});