GenericCloner: remove FunctionExits

It's not used

Author: eeckstein

include/swift/SILOptimizer/Utils/GenericCloner.h

@@ -42,7 +42,6 @@ class GenericCloner
 
   llvm::SmallVector<AllocStackInst *, 8> AllocStacks;
   llvm::SmallVector<StoreBorrowInst *, 8> StoreBorrowsToCleanup;
-  llvm::SmallVector<TermInst *, 8> FunctionExits;
   AllocStackInst *ReturnValueAddr = nullptr;
 
 public:
@@ -94,11 +93,6 @@ class GenericCloner
     if (Callback)
       Callback(Orig, Cloned);
 
-    if (auto *termInst = dyn_cast<TermInst>(Cloned)) {
-      if (termInst->isFunctionExiting()) {
-        FunctionExits.push_back(termInst);
-      }
-    }
     SILClonerWithScopes<GenericCloner>::postProcess(Orig, Cloned);
   }
 

lib/SILOptimizer/Utils/GenericCloner.cpp

@@ -192,8 +192,7 @@ void GenericCloner::visitTerminator(SILBasicBlock *BB) {
       getBuilder().createDeallocStack(ASI->getLoc(), ASI);
     }
     if (ReturnValue) {
-      auto *NewReturn = getBuilder().createReturn(RI->getLoc(), ReturnValue);
-      FunctionExits.push_back(NewReturn);
+      getBuilder().createReturn(RI->getLoc(), ReturnValue);
       return;
     }
   } else if (OrigTermInst->isFunctionExiting()) {