[llvm] [InlineAsm] wrap ConstraintCode in enum class NFC (PR #66003)

[Martin Storsjö via llvm-commits]

mstorsjo wrote:

> My approach to managing cmake config options is to put them in a shell script (`reconfig.sh`) in the build directory, and to `rm -rf CMakeCache.txt CMakeFiles` when I encounter problems with that. In other words, I don't trust CMakeCache to hold my configuration for me, I write it down. CMake leaves a lot to be desired. =/

+1, I do the same. In many cases, keeping the cache works, but rerunning cmake with an existing cache and omitting variables on the command line often will keep your last value, as opposed to what you'd get if running it in an empty directory.

https://github.com/llvm/llvm-project/pull/66003