[lld] [LLD][ELF][AArch64] Mark .plt and .iplt with PURECODE flag (PR #134798)

[Fangrui Song via llvm-commits]

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@@ -2610,6 +2610,11 @@ PltSection::PltSection(Ctx &ctx)
   // modify the instructions in the PLT entries.
   if (ctx.arg.emachine == EM_SPARCV9)
     this->flags |= SHF_WRITE;
+
+  // On AArch64, PLT entries only do loads from the .got.plt section, so the
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MaskRay wrote:

perhaps move before EM_PPC

https://github.com/llvm/llvm-project/pull/134798