[clang] [lld] [llvm] [llvm][lld][clang] Delay initializing TargetOptions in LTO builds until a Triple is available (PR #179509)

[Nikita Popov via cfe-commits]

https://github.com/nikic approved this pull request.

LGTM, but @teresajohnson should take a look as well.

https://github.com/llvm/llvm-project/pull/179509