fix: Handle nonetype pad value for Constant pad

[peri044]

Description

Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context. List any dependencies that are required for this change.

Fixes # (issue)

Type of change

Please delete options that are not relevant and/or add your own.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Checklist:

• My code follows the style guidelines of this project (You can use the linters)
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas and hacks
• I have made corresponding changes to the documentation
• I have added tests to verify my fix or my feature
• New and existing unit tests pass locally with my changes
• I have added the relevant labels to my PR in so that relevant reviewers are notified

[github-actions]

Code conforms to Python style guidelines

[github-actions]

There are some changes that do not conform to C++ style guidelines:

diff --git a/home/runner/work/TensorRT/TensorRT/core/lowering/passes/replace_aten_pad.cpp b/tmp/changes.txt
index 23e62e1..dd5e721 100644
--- a/home/runner/work/TensorRT/TensorRT/core/lowering/passes/replace_aten_pad.cpp
+++ b/tmp/changes.txt
@@ -101,7 +101,7 @@ void ReplaceAtenPad(std::shared_ptr<torch::jit::Graph>& graph) {
          torch::jit::Node* new_node;
          auto pad_value = it->inputs()[3];
          auto is_pad_none = torch::jit::toIValue(it->inputs()[3])->isNone();
-          if(is_pad_none){
+          if (is_pad_none) {
            pad_value = graph->insertConstant(0.0);
          }

ERROR: Some files do not conform to style guidelines

[github-actions]

There are some changes that do not conform to C++ style guidelines:

diff --git a/home/runner/work/TensorRT/TensorRT/core/lowering/passes/replace_aten_pad.cpp b/tmp/changes.txt
index 23e62e1..dd5e721 100644
--- a/home/runner/work/TensorRT/TensorRT/core/lowering/passes/replace_aten_pad.cpp
+++ b/tmp/changes.txt
@@ -101,7 +101,7 @@ void ReplaceAtenPad(std::shared_ptr<torch::jit::Graph>& graph) {
          torch::jit::Node* new_node;
          auto pad_value = it->inputs()[3];
          auto is_pad_none = torch::jit::toIValue(it->inputs()[3])->isNone();
-          if(is_pad_none){
+          if (is_pad_none) {
            pad_value = graph->insertConstant(0.0);
          }

ERROR: Some files do not conform to style guidelines

[github-actions]

Code conforms to Python style guidelines

[github-actions]

Code conforms to C++ style guidelines

[github-actions]

Code conforms to Python style guidelines

[narendasan]

LGTM