[llvm] [LLVM][CodeGen] Flooring BW to 1 in isSaturatingMinMax (PR #160637)

[via llvm-commits]

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@@ -6047,7 +6047,7 @@ static SDValue isSaturatingMinMax(SDValue N0, SDValue N1, SDValue N2,
   }
 
   if (MaxC == 0 && MinCPlus1.isPowerOf2()) {
-    BW = MinCPlus1.exactLogBase2();
+    BW = std::max(MinCPlus1.exactLogBase2(), 1);
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MitchBriles wrote:

Should this be MinBitWidth instead of 1?

https://github.com/llvm/llvm-project/pull/160637