[llvm] [CrossDSO CFI] Make sure __cfi_check has BTI attribute. (PR #131224)

[Eli Friedman via llvm-commits]

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@@ -94,6 +94,14 @@ void CrossDSOCFI::buildCFICheck(Module &M) {
   Triple T(M.getTargetTriple());
   if (T.isARM() || T.isThumb())
     F->addFnAttr("target-features", "+thumb-mode");
+  if (T.isAArch64()) {
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efriedma-quic wrote:

Gave this a shot.  Seems to be okay for aarch64, but I'm a little concerned this will cause issues for other targets (see #98673).

https://github.com/llvm/llvm-project/pull/131224