[llvm] [PAC][CodeGen][ELF][AArch64] Support signed GOT (PR #96164)

[Daniil Kovalev via llvm-commits]

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+; RUN: llc -mtriple=arm64 -global-isel=0 -fast-isel=0         -relocation-model=pic -o - %s -mcpu=cyclone -mattr=+pauth | FileCheck %s
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kovdan01 wrote:

I'll try (as a separate follow-up patch) to combine such tests in two files: one for ptrauth-*.ll tests and one for corresponding non-pauth tests. Thanks for suggestion.

https://github.com/llvm/llvm-project/pull/96164