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

[Peter Smith via llvm-commits]

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@@ -425,6 +426,25 @@ class InputSection : public InputSectionBase {
   template <class ELFT> void copyShtGroup(uint8_t *buf);
 };
 
+// A marker for a potential spill location for another input section. This
+// broadly acts as if it were the original section until address assignment.
+// Then it is either replaced with the real input section or removed.
+class SpillInputSection : public InputSection {
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smithp35 wrote:

I'd personally lean towards `PotentialSpillInputSection` as for some reason my brain sees SpillInputSection, or spill in the code, and thinks of it as a real thing that has spilled, not somewhere that might be spilled to.

However this is subjective so probably best to see if anyone else agrees before making any changes.

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