Revert "[X86] Invert (and X, ~(and ~Y, Z)) back into (and X, (or Y, ~Z)) (llvm#109215)"

This reverts commit 6fd229a.

Author: Saldivarcher

llvm/lib/Target/X86/X86ISelLowering.cpp

@@ -50035,28 +50035,6 @@ static bool hasBZHI(const X86Subtarget &Subtarget, MVT VT) {
          (VT == MVT::i32 || (VT == MVT::i64 && Subtarget.is64Bit()));
 }
 
-/// Folds (and X, (or Y, ~Z)) --> (and X, ~(and ~Y, Z))
-/// This undoes the inverse fold performed in InstCombine
-static SDValue combineAndNotOrIntoAndNotAnd(SDNode *N, SelectionDAG &DAG) {
-
-  using namespace llvm::SDPatternMatch;
-  MVT VT = N->getSimpleValueType(0);
-  SDLoc DL(N);
-  const TargetLowering &TLI = DAG.getTargetLoweringInfo();
-  if (!TLI.hasAndNot(SDValue(N, 0)))
-    return SDValue();
-
-  SDValue X, Y, Z;
-  if (sd_match(
-          N, m_And(m_Value(X), m_OneUse(m_Or(m_Value(Y), m_Not(m_Value(Z)))))))
-    return DAG.getNode(
-        ISD::AND, DL, VT, X,
-        DAG.getNOT(DL, DAG.getNode(ISD::AND, DL, VT, DAG.getNOT(DL, Y, VT), Z),
-                   VT));
-
-  return SDValue();
-}
-
 // This function recognizes cases where X86 bzhi instruction can replace and
 // 'and-load' sequence.
 // In case of loading integer value from an array of constants which is defined
@@ -50548,9 +50526,6 @@ static SDValue combineAnd(SDNode *N, SelectionDAG &DAG,
   if (SDValue R = combineAndLoadToBZHI(N, DAG, Subtarget))
     return R;
 
-  if (SDValue R = combineAndNotOrIntoAndNotAnd(N, DAG))
-    return R;
-
   // fold (and (mul x, c1), c2) -> (mul x, (and c1, c2))
   // iff c2 is all/no bits mask - i.e. a select-with-zero mask.
   // TODO: Handle PMULDQ/PMULUDQ/VPMADDWD/VPMADDUBSW?