[llvm] Revert "[PatternMatch] Add `m_[Shift]OrSelf` matchers." (PR #152953)

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``````````bash
git-clang-format --diff HEAD~1 HEAD --extensions cpp,h -- llvm/include/llvm/IR/PatternMatch.h llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp llvm/unittests/IR/PatternMatch.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp b/llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp
index 40a7f8043..fbe6c3b98 100644
--- a/llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp
+++ b/llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp
@@ -824,7 +824,8 @@ static bool foldConsecutiveLoads(Instruction &I, const DataLayout &DL,
   // Check if shift needed. We need to shift with the amount of load1
   // shift if not zero.
   if (LOps.Shift)
-    NewOp = Builder.CreateShl(NewOp, ConstantInt::get(I.getContext(), *LOps.Shift));
+    NewOp =
+        Builder.CreateShl(NewOp, ConstantInt::get(I.getContext(), *LOps.Shift));
   I.replaceAllUsesWith(NewOp);
 
   return true;

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https://github.com/llvm/llvm-project/pull/152953