[llvm-branch-commits] [lld] [PAC][lld] Use braa instr in PAC PLT sequence with valid PAuth core info (PR #113945)

[Peter Smith via llvm-branch-commits]

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@@ -1014,9 +1018,18 @@ AArch64BtiPac::AArch64BtiPac(Ctx &ctx) : AArch64(ctx) {
   // relocations.
   // The PAC PLT entries require dynamic loader support and this isn't known
   // from properties in the objects, so we use the command line flag.
-  pacEntry = ctx.arg.zPacPlt;
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smithp35 wrote:

It could be worth adding to the comment here. Something like:
```
By default we only use hint-space instructions, but if we detect the PAuthABI, which requires v8.3-A we can use the non-hint space instructions.
```

https://github.com/llvm/llvm-project/pull/113945