[compiler-rt] Check if LLD is built when checking if lto_supported (PR #92752)

[Jan Voung via llvm-commits]

jvoung wrote:

I think that traces back to https://github.com/llvm/llvm-project/commit/2344a72dd63661098244b3bc43696710686ef9d9 where there is an "OR" (`if (LINKER_IS_LLD OR LLVM_TOOL_LLD_BUILD)`...), IIUC

@vitalybuka do you have additional context here or thoughts for this too?

 #90692 itself is not a huge thing, but I think it's worth figuring this out so that the next person who increases `ModuleSummaryIndex::BitCodeSummaryVersion` doesn't run into the same issue.


https://github.com/llvm/llvm-project/pull/92752