[lld] [PAC][lld] Properly handle `.relr.auth.dyn` -> `.rela.dyn` movement (PR #195649)

[Jessica Clarke via llvm-commits]

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@@ -2090,6 +2085,19 @@ template <class ELFT> void Writer<ELFT>::finalizeSections() {
   //    values. They also might change after adding the thunks.
   finalizeAddressDependentContent();
 
+  // .rela_iplt_{start,end} mark the start and the end of the section containing
+  // IRELATIVE relocations. This must be called after
+  // finalizeAddressDependentContent() because it might move relocations from
+  // .relr.auth.dyn to .rela.dyn.
+  if (ctx.sym.relaIpltStart) {
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jrtc27 wrote:

Does this not need to be done before/between/after every iteration of finalizeAddressDependentContent in case any references to the symbols care about the layout?

https://github.com/llvm/llvm-project/pull/195649