git: 458532c2dd24..b9a7e2c7438a - vendor/llvm-project/release-15.x - vendor branch updated

[Dimitry Andric]

The branch vendor/llvm-project/release-15.x has been updated by dim:

URL: https://cgit.FreeBSD.org/src/log/?id=458532c2dd24..b9a7e2c7438a

b9a7e2c7438a Vendor import of llvm-project branch release/15.x 
llvmorg-15.0.7-0-g8dfdcc7b7bf6.