ScopedFootprint.box: use templated isl types

Author: Sven Verdoolaege

tc/core/polyhedral/memory_promotion.cc

@@ -136,7 +136,7 @@ isl::map TensorReferenceGroup::approximateScopedAccesses() const {
   return accessed;
 }
 
-isl::multi_aff ScopedFootprint::lowerBounds() const {
+isl::MultiAff<Scope, Tensor> ScopedFootprint::lowerBounds() const {
   if (dim() == 0) {
     throw promotion::PromotionNYI("promotion for scalars");
   }

tc/core/polyhedral/memory_promotion.h

@@ -48,21 +48,21 @@ struct ScopedFootprint {
   isl::val size(size_t pos) const {
     return box.get_size().get_val(pos);
   }
-  isl::aff lowerBound(size_t pos) const {
+  isl::AffOn<Scope> lowerBound(size_t pos) const {
     return box.get_offset().get_aff(pos);
   }
   isl::val stride(size_t pos) const {
     return strideValues.get_val(pos);
   }
-  isl::aff strideOffset(size_t pos) const {
+  isl::AffOn<Scope> strideOffset(size_t pos) const {
     return strideOffsets.get_aff(pos);
   }
 
-  isl::fixed_box box;
+  isl::FixedBox<Scope, Tensor> box;
   isl::MultiVal<Tensor> strideValues;
   isl::MultiAff<Scope, Tensor> strideOffsets;
 
-  isl::multi_aff lowerBounds() const;
+  isl::MultiAff<Scope, Tensor> lowerBounds() const;
 };
 
 // Descriptor of tensor reference in a Scop.