[llvm] [AArch64][BTI] Add BTI at EH entries. (PR #155308)

[Shashi Shankar via llvm-commits]

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@@ -129,8 +134,15 @@ void AArch64BranchTargets::addBTI(MachineBasicBlock &MBB, bool CouldCall,
   assert(HintNum != 32 && "No target kinds!");
 
   auto MBBI = MBB.begin();
+  bool SawEHLabel = false;
 
-  // Skip the meta instructions, those will be removed anyway.
+  // If the block starts with EH_LABEL(s), skip them first and remember we saw
+  // one.
+  while (MBBI != MBB.end() && MBBI->isEHLabel()) {
+    ++MBBI;
+    SawEHLabel = true;
+  }
+  /// Skip the meta instructions, those will be removed anyway.
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shashforge wrote:

done

https://github.com/llvm/llvm-project/pull/155308