[llvm] [GuardUtils] Revert llvm::isWidenableBranch change (PR #66411)

[via llvm-commits]

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@@ -2144,6 +2144,31 @@ exit:                                             ; preds = %guarded, %entry
   ret i32 %result
 }
 
+; TODO: Support widenable branch in the form of br((wc and cond0) and cond1)
+define i32 @hoge(i1 %cond0, i1 %cond1, i32 %limit) {
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annamthomas wrote:

Pls run this through update_test_checks.py.

https://github.com/llvm/llvm-project/pull/66411