drop threadIdxXScheduleDepthState

It has been completely replaced by thread specific markers.

Author: Sven Verdoolaege

tc/core/polyhedral/cuda/mapped_scop.cc

@@ -124,14 +124,6 @@ void MappedScop::mapRemaining(detail::ScheduleTree* tree, size_t nMapped) {
   auto filter = makeFixRemainingZeroFilter(domain, ids);
   auto mapping = detail::ScheduleTree::makeMappingFilter(filter, ids);
   insertNodeAbove(root, tree, std::move(mapping));
-
-  for (size_t i = nMapped; i < nToMap; ++i) {
-    if (MappingTypeId::makeId(i) == mapping::ThreadId::x()) {
-      threadIdxXScheduleDepthState.emplace_back(std::make_pair(
-          activeDomainPoints(schedule(), tree),
-          tree->scheduleDepth(schedule())));
-    }
-  }
 }
 
 // Uses as many blockSizes elements as outer coincident dimensions in the
@@ -374,11 +366,6 @@ size_t MappedScop::mapToThreads(detail::ScheduleTree* band) {
   for (size_t i = 0; i < nMappedThreads; ++i) {
     auto id = mapping::ThreadId::makeId(i);
     auto dim = nMappedThreads - 1 - i;
-    if (id == mapping::ThreadId::x()) {
-      threadIdxXScheduleDepthState.emplace_back(std::make_pair(
-          activeDomainPoints(schedule(), band),
-          band->scheduleDepth(schedule()) + dim));
-    }
     band = map(band, dim, id);
   }
   mapRemaining<mapping::ThreadId>(band, nMappedThreads);

tc/core/polyhedral/cuda/mapped_scop.h

@@ -178,13 +178,6 @@ class MappedScop {
   const ::tc::Block numThreads;
   const uint64_t unroll;
 
-  // The schedule depth that was mapped to Thread::x for specific parts of the
-  // domain.
-  // XXX: this is a partially redundant state as this information can
-  // potentially be extracted from the schedule tree; however, until we get a
-  // first-class MappingNode, it requires some dirty hacks.
-  ThreadIdxXScheduleDepthState threadIdxXScheduleDepthState;
-
  private:
   // Information about a detected reduction that can potentially
   // be mapped to a library call.

tc/core/polyhedral/cuda/memory_promotion_heuristic.h

@@ -22,9 +22,6 @@
 
 namespace tc {
 namespace polyhedral {
-using ThreadIdxXScheduleDepthState =
-    std::vector<std::pair<isl::union_set, size_t>>;
-
 class MappedScop;
 class Scop;