[llvm] [InstCombine] Prepare foldLogOpOfMaskedICmps to handle trunc to i1. (NFC) (PR #122179)

[Nikita Popov via llvm-commits]

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@@ -165,3 +165,18 @@ llvm::decomposeBitTestICmp(Value *LHS, Value *RHS, CmpInst::Predicate Pred,
 
   return Result;
 }
+
+std::optional<DecomposedBitTest>
+llvm::decomposeBitTest(Value *Cond, bool LookThruTrunc, bool AllowNonZeroC) {
+  using namespace PatternMatch;
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nikic wrote:

Unused?

https://github.com/llvm/llvm-project/pull/122179