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

[via llvm-commits]

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@@ -1622,6 +1627,25 @@ void BTFDebug::endModule() {
   // Collect global types/variables except MapDef globals.
   processGlobals(false);
 
+  // Create a BTF entry for func BPF_UNREACHABLE.
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yonghong-song wrote:

I looked at the patch. Generally looks better as it removed a couple "hack" in BTFDebug.cpp. I would prefer to generate DISubprogram unless M->debug_compile_units() is non-NULL, that is, dwarf is already enabled. I will make necessary adjustment based on your code.

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