[ScopBuilder] Move hoistInvariantLoads to ScopBuilder. NFC.

Refactor Scop and ScopBuilder class:

1. Move hoistInvariantLoads function from Scop to ScopBuilder class.

2. Private functions (addInvariantLoads, getNonHoistableCtx) are moved
   to public section of Scop class. hoistInvariantLoads function
   references these functions. These functions will be moved to
   ScopBuilder as well in the next steps.

Patch by Dominik Adamski <adamski.dominik@gmail.com>

Differential Revision: https://reviews.llvm.org/D62925

llvm-svn: 363121

1 files changed, 0 insertions, 19 deletions

diff --git a/polly/lib/Analysis/ScopInfo.cpp b/polly/lib/Analysis/ScopInfo.cpp
index 0a8da7426bc..00ede96ada3 100644
--- a/polly/lib/Analysis/ScopInfo.cpp
+++ b/polly/lib/Analysis/ScopInfo.cpp
@@ -3778,25 +3778,6 @@ isl::set Scop::getNonHoistableCtx(MemoryAccess *Access, isl::union_map Writes) {
   return WrittenCtx;
 }
 
-void Scop::hoistInvariantLoads() {
-  if (!PollyInvariantLoadHoisting)
-    return;
-
-  isl::union_map Writes = getWrites();
-  for (ScopStmt &Stmt : *this) {
-    InvariantAccessesTy InvariantAccesses;
-
-    for (MemoryAccess *Access : Stmt)
-      if (isl::set NHCtx = getNonHoistableCtx(Access, Writes))
-        InvariantAccesses.push_back({Access, NHCtx});
-
-    // Transfer the memory access from the statement to the SCoP.
-    for (auto InvMA : InvariantAccesses)
-      Stmt.removeMemoryAccess(InvMA.MA);
-    addInvariantLoads(Stmt, InvariantAccesses);
-  }
-}
-
 ScopArrayInfo *Scop::getOrCreateScopArrayInfo(Value *BasePtr, Type *ElementType,
                                               ArrayRef<const SCEV *> Sizes,
                                               MemoryKind Kind,