Fix warnings in TensorShape (#50486)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/50486
Compiling currently gives:
```
an 13 16:46:39 In file included from ../aten/src/ATen/native/TensorShape.cpp:12:
Jan 13 16:46:39 ../aten/src/ATen/native/Resize.h:37:24: warning: comparison of integers of different signs: 'int64_t' (aka 'long long') and 'size_t' (aka 'unsigned long') [-Wsign-compare]
Jan 13 16:46:39 if (new_size_bytes > self->storage().nbytes()) {
Jan 13 16:46:39 ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~~~~~~
Jan 13 16:46:39 ../aten/src/ATen/native/TensorShape.cpp:32:24: warning: comparison of integers of different signs: 'size_t' (aka 'unsigned long') and 'int64_t' (aka 'long long') [-Wsign-compare]
Jan 13 16:46:39 for (size_t i = 0; i < shape_tensor.numel(); ++i) {
Jan 13 16:46:39 ~ ^ ~~~~~~~~~~~~~~~~~~~~
Jan 13 16:46:39 ../aten/src/ATen/native/TensorShape.cpp:122:25: warning: comparison of integers of different signs: 'int64_t' (aka 'long long') and 'size_t' (aka 'unsigned long') [-Wsign-compare]
Jan 13 16:46:39 for (int64_t i = 0; i < tensors.size(); i++) {
Jan 13 16:46:39 ~ ^ ~~~~~~~~~~~~~~
Jan 13 16:46:39 ../aten/src/ATen/native/TensorShape.cpp:162:21: warning: comparison of integers of different signs: 'int' and 'size_t' (aka 'unsigned long') [-Wsign-compare]
Jan 13 16:46:39 for (int i = 0; i < tensors.size(); i++) {
Jan 13 16:46:39 ~ ^ ~~~~~~~~~~~~~~
Jan 13 16:46:39 ../aten/src/ATen/native/TensorShape.cpp:300:25: warning: comparison of integers of different signs: 'int64_t' (aka 'long long') and 'size_t' (aka 'unsigned long') [-Wsign-compare]
Jan 13 16:46:39 for (int64_t i = 0; i < s1.size(); ++i) {
Jan 13 16:46:39 ~ ^ ~~~~~~~~~
Jan 13 16:46:39 ../aten/src/ATen/native/TensorShape.cpp:807:21: warning: comparison of integers of different signs: 'int64_t' (aka 'long long') and 'size_t' (aka 'unsigned long') [-Wsign-compare]
Jan 13 16:46:39 TORCH_CHECK(dim < self_sizes.size());
Jan 13 16:46:39 ~~~ ^ ~~~~~~~~~~~~~~~~~
Jan 13 16:46:39 ../c10/util/Exception.h:361:31: note: expanded from macro 'TORCH_CHECK'
Jan 13 16:46:39 if (C10_UNLIKELY_OR_CONST(!(cond))) { \
Jan 13 16:46:39 ^~~~
Jan 13 16:46:39 ../c10/util/Exception.h:244:47: note: expanded from macro 'C10_UNLIKELY_OR_CONST'
Jan 13 16:46:39 #define C10_UNLIKELY_OR_CONST(e) C10_UNLIKELY(e)
Jan 13 16:46:39 ^
Jan 13 16:46:39 ../c10/macros/Macros.h:173:65: note: expanded from macro 'C10_UNLIKELY'
Jan 13 16:46:39 #define C10_UNLIKELY(expr) (__builtin_expect(static_cast<bool>(expr), 0))
Jan 13 16:46:39 ^~~~
Jan 13 16:46:39 ../aten/src/ATen/native/TensorShape.cpp:855:24: warning: comparison of integers of different signs: 'size_t' (aka 'unsigned long') and 'const int64_t' (aka 'const long long') [-Wsign-compare]
Jan 13 16:46:39 for (size_t i = 0; i < num_blocks; ++i) {
Jan 13 16:46:39 ~ ^ ~~~~~~~~~~
Jan 13 16:46:39 ../aten/src/ATen/native/TensorShape.cpp:2055:23: warning: comparison of integers of different signs: 'int' and 'size_t' (aka 'unsigned long') [-Wsign-compare]
Jan 13 16:46:39 for (int i = 0; i < vec.size(); i++) {
Jan 13 16:46:39 ~ ^ ~~~~~~~~~~
Jan 13 16:46:39 ../aten/src/ATen/native/TensorShape.cpp:2100:25: warning: comparison of integers of different signs: 'int64_t' (aka 'long long') and 'size_t' (aka 'unsigned long') [-Wsign-compare]
Jan 13 16:46:39 for (int64_t i = 0; i < src.size(); ++i) {
```
This fixes issues with loop iteration variable types
Test Plan: Sandcastle tests
Reviewed By: xush6528
Differential Revision: D25901799
fbshipit-source-id: c68d9ab93ab0142b5057ce4ca9e75c620a1425f0
