[clang] [AArch64][SME] Warn when using a streaming builtin from a non-streaming function (PR #74064)

[Nico Weber via cfe-commits]

nico wrote:

On my system, this increases the compilation time of SemaChecking.cpp from 7 seconds to 2 minutes 46 seconds (using clang as a host compiler). That seems excessive. Let's please find a way to not make compilation so slow, and let's consider reverting this until a faster approach is found.

https://github.com/llvm/llvm-project/pull/74064