[compiler-rt] [win/asan] Add a test skeleton for function GetInstructionSize. (PR #116948)

[via llvm-commits]

https://github.com/zmodem approved this pull request.

LGTM

> Unfortunately, when later adding the longer instruction sequences,
they will still get split to different lines by git-clang-format.

You can add directives like this: https://github.com/llvm/llvm-project/blob/00d383ee9d6fe66799bf9b242b59753d175d51cb/clang/lib/Basic/DiagnosticIDs.cpp#L40 to disable clang-format on a range of lines.

https://github.com/llvm/llvm-project/pull/116948