[X86] getTargetShuffleInputs - ensure we limit the maximum recursion …

…depth to match SelectionDAG::MaxRecursionDepth

Regressions were pre-handled by rG62e36b120749

Fixes Issue #52960

llvm/lib/Target/X86/X86ISelLowering.cpp

@@ -7922,6 +7922,7 @@ static bool getTargetShuffleInputs(SDValue Op, SmallVectorImpl<SDValue> &Inputs,
 // Attempt to decode ops that could be represented as a shuffle mask.
 // The decoded shuffle mask may contain a different number of elements to the
 // destination value type.
+// TODO: Merge into getTargetShuffleInputs()
 static bool getFauxShuffleMask(SDValue N, const APInt &DemandedElts,
                                SmallVectorImpl<int> &Mask,
                                SmallVectorImpl<SDValue> &Ops,
@@ -8370,6 +8371,9 @@ static bool getTargetShuffleInputs(SDValue Op, const APInt &DemandedElts,
                                    APInt &KnownUndef, APInt &KnownZero,
                                    const SelectionDAG &DAG, unsigned Depth,
                                    bool ResolveKnownElts) {
+  if (Depth >= SelectionDAG::MaxRecursionDepth)
+    return false; // Limit search depth.
+
   EVT VT = Op.getValueType();
   if (!VT.isSimple() || !VT.isVector())
     return false;