fix: truncate_long_and_double incur torchscript inference issues

Signed-off-by: Bo Wang <[email protected]>

Author: bowang007

Diff for: core/partitioning/shape_analysis.cpp

@@ -81,8 +81,13 @@ void getSegmentsOutputByRunning(
       jit_inputs_ivalues.push_back(ivalues_maps[input].toList());
     } else if (input->type()->kind() == torch::jit::TypeKind::TupleType) {
       jit_inputs_ivalues.push_back(ivalues_maps[input].toTuple());
+    } else if (input->type()->kind() == torch::jit::TypeKind::NumberType) {
+      jit_inputs_ivalues.push_back(ivalues_maps[input].toScalar());
     } else {
-      TORCHTRT_THROW_ERROR("Unable to find type for value: " << input->debugName() << " to get the ivalues.\n");
+      TORCHTRT_THROW_ERROR(
+          "Unable to find type for value: " << input->debugName()
+                                            << " to get the ivalues. The type for this value should be "
+                                            << input->type()->str() << " \n");
     }
   }
 
@@ -110,28 +115,31 @@ void getSegmentsOutputByRunning(
   for (auto& i : seg_block.raw_inputs()) {
     if (ivalues_maps[i].isTensor()) {
       // set the input_shape and data_type
-      at::ScalarType t = ivalues_maps[i].toTensor().scalar_type();
+      // we can use a temp value here instead of replacing the values in ivalues_map since we only use ivalues_map for
+      // shape inference
+      auto cur_ivalue = ivalues_maps[i];
+      at::ScalarType t = cur_ivalue.toTensor().scalar_type();
       if (!partition_info.truncate_long_and_double && (t == at::kLong || t == at::kDouble)) {
         TORCHTRT_THROW_ERROR(
             "Unable to process subgraph input type of at::kLong/at::kDouble, try to compile model with truncate_long_and_double enabled");
       } else if (partition_info.truncate_long_and_double && t == at::kLong) {
-        ivalues_maps[i] = ivalues_maps[i].toTensor().to(at::kInt);
+        cur_ivalue = cur_ivalue.toTensor().to(at::kInt);
         LOG_WARNING("Truncating graph input type from at::kLong to at::kInt");
       } else if (partition_info.truncate_long_and_double && t == at::kDouble) {
-        ivalues_maps[i] = ivalues_maps[i].toTensor().to(at::kFloat);
+        cur_ivalue = cur_ivalue.toTensor().to(at::kFloat);
         LOG_WARNING("Truncating graph input type from at::kDouble to at::kFloat");
       }
-      c10::optional<nvinfer1::DataType> dtype = util::optTypeMetaToTRTDataType(ivalues_maps[i].toTensor().dtype());
+      c10::optional<nvinfer1::DataType> dtype = util::optTypeMetaToTRTDataType(cur_ivalue.toTensor().dtype());
       if (dtype == c10::nullopt) {
-        TORCHTRT_THROW_ERROR("Unsupported input data type " << ivalues_maps[i].toTensor().dtype());
+        TORCHTRT_THROW_ERROR("Unsupported input data type " << cur_ivalue.toTensor().dtype());
       }
-      if (ivalues_maps[i].toTensor().sizes().size() == 0) {
+      if (cur_ivalue.toTensor().sizes().size() == 0) {
         // handle Scalar types, which has sizes of []
         input_shapes.push_back(util::toVec(util::toDims(c10::List<long int>({1}))));
       } else {
-        input_shapes.push_back(util::toVec(util::toDims(ivalues_maps[i].toTensor().sizes())));
+        input_shapes.push_back(util::toVec(util::toDims(cur_ivalue.toTensor().sizes())));
       }
-      input_types.push_back(ivalues_maps[i].toTensor().scalar_type());
+      input_types.push_back(cur_ivalue.toTensor().scalar_type());
     }
   }