git: ecbca9f5fb7d..145449b1e420 - vendor/llvm-project/main - vendor branch updated

[Dimitry Andric]

The branch vendor/llvm-project/main has been updated by dim:

URL: https://cgit.FreeBSD.org/src/log/?id=ecbca9f5fb7d..145449b1e420

145449b1e420 Vendor import of llvm-project main 
llvmorg-15-init-15358-g53dc0f107877.