[llvm] [X86][SelectionDAG] Fix the Gather's base and index by modifying the Scale value (PR #134979)

[Simon Pilgrim via llvm-commits]

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@@ -12163,9 +12163,6 @@ bool refineUniformBase(SDValue &BasePtr, SDValue &Index, bool IndexIsScaled,
   if (IndexIsScaled)
     return false;
 
-  if (!isNullConstant(BasePtr) && !Index.hasOneUse())
-    return false;
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RKSimon wrote:

Not sure this is required anymore

https://github.com/llvm/llvm-project/pull/134979