[llvm] [DAG] SDPatternMatch m_Zero/m_One/m_AllOnes have inconsistent undef h… (PR #147044)

[Simon Pilgrim via llvm-commits]

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@@ -1937,6 +1937,10 @@ LLVM_ABI bool isOneOrOneSplat(SDValue V, bool AllowUndefs = false);
 /// Does not permit build vector implicit truncation.
 LLVM_ABI bool isAllOnesOrAllOnesSplat(SDValue V, bool AllowUndefs = false);
 
+LLVM_ABI bool isOnesOrOnesSplat(SDValue N, bool AllowUndefs = false);
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RKSimon wrote:

add doxygen comment

https://github.com/llvm/llvm-project/pull/147044