[ValueTracking] Remove unused argument (NFC)

Author: nikic

llvm/lib/Analysis/ValueTracking.cpp

@@ -616,7 +616,7 @@ static bool isKnownNonZeroFromAssume(const Value *V, const SimplifyQuery &Q) {
 
 static void computeKnownBitsFromCmp(const Value *V, CmpInst::Predicate Pred,
                                     Value *LHS, Value *RHS, KnownBits &Known,
-                                    unsigned Depth, const SimplifyQuery &Q) {
+                                    const SimplifyQuery &Q) {
   if (RHS->getType()->isPointerTy()) {
     // Handle comparison of pointer to null explicitly, as it will not be
     // covered by the m_APInt() logic below.
@@ -720,13 +720,13 @@ void llvm::computeKnownBitsFromContext(const Value *V, KnownBits &Known,
       BasicBlockEdge Edge0(BI->getParent(), BI->getSuccessor(0));
       if (Q.DT->dominates(Edge0, Q.CxtI->getParent()))
         computeKnownBitsFromCmp(V, Cmp->getPredicate(), Cmp->getOperand(0),
-                                Cmp->getOperand(1), Known, Depth, Q);
+                                Cmp->getOperand(1), Known, Q);
 
       BasicBlockEdge Edge1(BI->getParent(), BI->getSuccessor(1));
       if (Q.DT->dominates(Edge1, Q.CxtI->getParent()))
         computeKnownBitsFromCmp(V, Cmp->getInversePredicate(),
                                 Cmp->getOperand(0), Cmp->getOperand(1), Known,
-                                Depth, Q);
+                                Q);
     }
 
     if (Known.hasConflict())
@@ -794,7 +794,7 @@ void llvm::computeKnownBitsFromContext(const Value *V, KnownBits &Known,
       continue;
 
     computeKnownBitsFromCmp(V, Cmp->getPredicate(), Cmp->getOperand(0),
-                            Cmp->getOperand(1), Known, Depth, Q);
+                            Cmp->getOperand(1), Known, Q);
   }
 
   // Conflicting assumption: Undefined behavior will occur on this execution