[PATCH] D99417: [AArch64][v8.5A] Add BTI to all function starts

[Fangrui Song via Phabricator via llvm-commits]

MaskRay added a comment.

I know that for generalization, sometimes specific tests can be removed. -fpatchable-function-entry is a bit special though, it can place NOPs before and after the function label. This property is relied upon by the Linux kernel dynamic ftrace.
Since the NOP insertion is a bit strange, and testing it does not increase test time (we don't add new `llc` commands so no process startup overhead), I'd like patchable-function-entry-bti.ll to be kept.


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https://reviews.llvm.org/D99417