[lld] [PAC][lld][AArch64][ELF] Support signed GOT (PR #96169)

[Daniil Kovalev via llvm-commits]

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@@ -655,6 +655,10 @@ void GotSection::addConstant(const Relocation &r) { relocations.push_back(r); }
 void GotSection::addEntry(const Symbol &sym) {
   assert(sym.auxIdx == symAux.size() - 1);
   symAux.back().gotIdx = numEntries++;
+  if (sym.hasFlag(NEEDS_GOT_AUTH)) {
+    assert(config->emachine == EM_AARCH64);
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kovdan01 wrote:

I've deleted the assert, thanks, see dca427bbf8ab6d53fd01b3d1799d4d723992edd2.

Regarding the assertion above - I'll delete that and similar ones in `addTlsDescEntry` and `addDynTlsEntry` if they are considered useless (I just don't want to mess new features with refactoring existing code).

https://github.com/llvm/llvm-project/pull/96169