[llvm] [BPF] Handle unreachable with a unimplemented kfunc call (PR #131731)

[Nikita Popov via llvm-commits]

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@@ -726,6 +733,38 @@ SDValue BPFTargetLowering::LowerATOMIC_LOAD_STORE(SDValue Op,
   return Op;
 }
 
+SDValue BPFTargetLowering::LowerTRAP(SDValue Op, SelectionDAG &DAG) const {
+  MachineFunction &MF = DAG.getMachineFunction();
+  Function &F = MF.getFunction();
+  if (F.hasFnAttribute(Attribute::Naked))
+    return Op;
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nikic wrote:

Probably this should be part of the generic handling for TrapUnreachable. IMHO we should never insert extra code into a naked function, for other targets as well.

https://github.com/llvm/llvm-project/pull/131731