[lld] [LLD] Implement --enable-non-contiguous-regions (PR #90007)

[Daniel Thornburgh via llvm-commits]

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@@ -226,6 +226,8 @@ void OutputSection::finalizeInputSections() {
         i = std::prev(mergeSections.end());
         syn->entsize = ms->entsize;
         isd->sections.push_back(syn);
+        if (script)
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mysterymath wrote:

> Since copyPotentialSpillList is so simple and used once, the function should be removed.

I was a bit split on this, as it does require making the potentialSpillLists public. Done; copySpillLists isn't a very good abstraction anyway.

https://github.com/llvm/llvm-project/pull/90007