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

[Fangrui Song via llvm-commits]

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@@ -35,6 +35,12 @@ ELF Improvements
 * ``--debug-names`` is added to create a merged ``.debug_names`` index
   from input ``.debug_names`` sections. Type units are not handled yet.
   (`#86508 <https://github.com/llvm/llvm-project/pull/86508>`_)
+* ``--enable-non-contiguous-regions`` option allows automatically packing input
+  sections into memory regions by automatically spilling to later matches if a
+  region would overflow. This reduces the toil of manually packing regions
+  (typical for embedded). It also makes full LTO feasible in such cases, since
+  IR merging currently prevents the linker script from referring to input
+  files.
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MaskRay wrote:

``(`#90007 <https://github.com/llvm/llvm-project/pull/90007>`_)``

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