362   if (x->is_zero()) {  in UnaryMinus()
391   if (exponent->is_zero()) {  in Exponentiate()
396   if (base->is_zero()) return base;  in Exponentiate()
458   if (x->is_zero()) return x;  in Multiply()
459   if (y->is_zero()) return y;  in Multiply()
476   if (y->is_zero()) {  in Divide()
507   if (y->is_zero()) {  in Remainder()
569   if (y->is_zero() || x->is_zero()) return x;  in LeftShift()
576   if (y->is_zero() || x->is_zero()) return x;  in SignedRightShift()
737   } else if (x->is_zero()) {  in Decrement()
781     if (value == 0) return x->is_zero();  in EqualToNumber()
801     if (x->is_zero()) {  in CompareToNumber()
832     return x->is_zero() ? ComparisonResult::kEqual  in CompareToDouble()
835   if (x->is_zero()) {  in CompareToDouble()
849     DCHECK(!x->is_zero());  in CompareToDouble()
928   if (bigint->is_zero()) {  in ToString()
982   if (x->is_zero()) return Handle<Smi>(Smi::kZero, isolate);  in ToNumber()
993   if (x->is_zero()) return 0.0;  in ToDouble()
1099   if (x->is_zero()) {  in AbsoluteAdd()
1100     DCHECK(y->is_zero());  in AbsoluteAdd()
1103   if (y->is_zero()) {  in AbsoluteAdd()
1134   if (x->is_zero()) {  in AbsoluteSub()
1135     DCHECK(y->is_zero());  in AbsoluteSub()
1138   if (y->is_zero()) {  in AbsoluteSub()
1207   DCHECK(!x->is_zero());  in AbsoluteSubOne()
1218   DCHECK(!x->is_zero());  in AbsoluteSubOne()
1441   DCHECK(!x->is_zero());  // Callers check anyway, no need to handle this.  in AbsoluteDivSmall()
1933   DCHECK(!x->is_zero());  in ToStringBasePowerOfTwo()
1993   DCHECK(!x->is_zero());  in ToStringGeneric()
2112   if (x->is_zero()) return x;  in AsIntN()
2154   if (x->is_zero()) return x;  in AsUintN()
2367   if (x->is_zero()) return 0;  in GetRawBits()