[llvm] [X86] matchAddressRecursively - move ZERO_EXTEND patterns into matchIndexRecursively (PR #85081)

[Simon Pilgrim via llvm-commits]

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@@ -2670,97 +2766,14 @@ bool X86DAGToDAGISel::matchAddressRecursively(SDValue N, X86ISelAddressMode &AM,
     break;
   }
   case ISD::ZERO_EXTEND: {
-    // Try to widen a zexted shift left to the same size as its use, so we can
-    // match the shift as a scale factor.
     if (AM.IndexReg.getNode() != nullptr || AM.Scale != 1)
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RKSimon wrote:

Can we remove the `AM.Scale != 1`? matchIndexRecursively needs to be able to accumulate scale

https://github.com/llvm/llvm-project/pull/85081