[clang-tools-extra] [clang-tidy] Detect std::rot[lr] pattern within modernize.use-std-bit (PR #186324)

[via cfe-commits]

github-actions[bot] wrote:

<!--LLVM CODE LINT COMMENT: clang-tidy-->


:warning: C/C++ code linter, clang-tidy found issues in your code. :warning:

<details>
<summary>
You can test this locally with the following command:
</summary>

```bash

git diff -U0 origin/main...HEAD -- clang-tools-extra/clang-tidy/modernize/UseStdBitCheck.cpp |
python3 clang-tools-extra/clang-tidy/tool/clang-tidy-diff.py   -path build -p1 -quiet
```

</details>

<details>
<summary>
View the output from clang-tidy here.
</summary>

```
clang-tools-extra/clang-tidy/modernize/UseStdBitCheck.cpp:179:16: warning: invalid case style for variable 'isRotl' [readability-identifier-naming]
  179 |     const bool isRotl = ShiftRightAmount.sge(ShiftLeftAmount);
      |                ^~~~~~
      |                IsRotl
  180 | 
  181 |     const StringRef ReplacementFuncName = isRotl ? "rotl" : "rotr";
      |                                           ~~~~~~
      |                                           IsRotl
  182 |     const uint64_t ReplacementShiftAmount =
  183 |         (isRotl ? ShiftLeftAmount : ShiftRightAmount).getZExtValue();
      |          ~~~~~~
      |          IsRotl
```

</details>


https://github.com/llvm/llvm-project/pull/186324