[clang] [Clang][Sema][OpenMP] Allow `thread_limit` to accept multiple expressions (PR #102715)

[Kazu Hirata via cfe-commits]

kazutakahirata wrote:

I've fixed a warning with ac83582a2e7301f7088d14a4c352438e9f62bcf0.  We should probably use `for (unsigned I = 0; I != NumVars; ++I)` because the use of `_` requires `(void)_;` and curly braces (or `[[maybe_unused]]`).  Will post a patch shortly.


https://github.com/llvm/llvm-project/pull/102715