[llvm] [BPF] Remove 'may_goto 0' instructions (PR #123482)

[via llvm-commits]

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@@ -682,6 +685,56 @@ bool BPFMIPreEmitPeephole::insertMissingCallerSavedSpills() {
   return Changed;
 }
 
+bool BPFMIPreEmitPeephole::removeMayGotoZero() {
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yonghong-song wrote:

With the newer fix, I checked with bpf selftests, all tests passed.

https://github.com/llvm/llvm-project/pull/123482