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

[Teresa Johnson via cfe-commits]

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teresajohnson wrote:

ok thanks, I take it back, I traced through the code and it does appear that we always now create at least an empty RegularLTO CombinedModule when the LTO object is constructed, from the context. So I guess it is always getting setup correctly

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