70            fc.arguments()[0]->is<VariableReference>() &&  in is_sample_call_to_fp()
71            fc.arguments()[0]->as<VariableReference>().variable() == &fp;  in is_sample_call_to_fp()
104                         if (!fWritesToSampleCoords && coords->is<VariableReference>() &&  in visitExpression()
105                             coords->as<VariableReference>()  in visitExpression()
138         if (e.is<VariableReference>()) {  in visitExpression()
139             const VariableReference& var = e.as<VariableReference>();  in visitExpression()
221         } else if (e.is<VariableReference>()) {  in visitExpression()
222             const VariableReference& ref = e.as<VariableReference>();  in visitExpression()
260         if (e.is<VariableReference>()) {  in visitExpression()
261             const VariableReference& ref = e.as<VariableReference>();  in visitExpression()
263                 (ref.refKind() == VariableReference::RefKind::kWrite ||  in visitExpression()
264                  ref.refKind() == VariableReference::RefKind::kReadWrite ||  in visitExpression()
265                  ref.refKind() == VariableReference::RefKind::kPointer)) {  in visitExpression()
308                 VariableReference& varRef = expr.as<VariableReference>();  in visitExpression()
355     VariableReference* fAssignedVar = nullptr;
680         RefKindWriter(VariableReference::RefKind refKind) : fRefKind(refKind) {}  in UpdateRefKind()
683             if (expr.is<VariableReference>()) {  in UpdateRefKind()
684                 expr.as<VariableReference>().setRefKind(fRefKind);  in UpdateRefKind()
690         VariableReference::RefKind fRefKind;  in UpdateRefKind()
699                                   VariableReference::RefKind kind,  in MakeAssignmentExpr()
717            expr.is<VariableReference>() ||  in IsTrivialExpression()
792             return left.as<VariableReference>().variable() ==  in IsSameExpressionTree()
793                    right.as<VariableReference>().variable();  in IsSameExpressionTree()
849         return expr->is<VariableReference>() &&  in invalid_for_ES2()
850                expr->as<VariableReference>().variable() == loopInfo.fIndex;  in invalid_for_ES2()
1020                 const Variable* v = e.as<VariableReference>().variable();  in visitExpression()