[llvm-branch-commits] [llvm] release/20.x: [AArch64] Ensure the LR is preserved if we must call __arm_get_current_vg (#145760) (PR #147171)

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llvmbot wrote:

@efriedma-quic What do you think about merging this PR to the release branch?

https://github.com/llvm/llvm-project/pull/147171