[llvm] [X86][SelectionDAG] Fix the Gather's base and index by modifying the Scale value (PR #137813)

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``````````bash
git-clang-format --diff HEAD~1 HEAD --extensions cpp -- llvm/lib/Target/X86/X86ISelLowering.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
index b2841b7ec..c299c6be1 100644
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -56607,10 +56607,10 @@ static SDValue combineGatherScatter(SDNode *N, SelectionDAG &DAG,
     }
     unsigned IndexWidth = Index.getScalarValueSizeInBits();
 
-    // If the index is a left shift, \ComputeNumSignBits we are recomputing the number of sign bits
-    // from the shifted value. We are trying to enable the optimization in which
-    // we can shrink indices if they are larger than 32-bits. Using the existing
-    // fold techniques implemented below.
+    // If the index is a left shift, \ComputeNumSignBits we are recomputing the
+    // number of sign bits from the shifted value. We are trying to enable the
+    // optimization in which we can shrink indices if they are larger than
+    // 32-bits. Using the existing fold techniques implemented below.
     unsigned ComputeNumSignBits = DAG.ComputeNumSignBits(Index);
     if (Index.getOpcode() == ISD::SHL) {
       if (auto MinShAmt = DAG.getValidMinimumShiftAmount(Index)) {

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https://github.com/llvm/llvm-project/pull/137813