[DSE][NFC] Clean up DeadStoreElimination from unused variables

Differential Revision: https://reviews.llvm.org/D106446
llvm · Aug 4, 2021 · 238139b · 238139b
1 parent 643ce70
commit 238139b
Showing 1 changed file with 2 additions and 4 deletions.
diff --git a/llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp b/llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp
@@ -1786,7 +1786,6 @@ struct DSEState {
         continue;
 
       Instruction *DefI = Def->getMemoryInst();
-      SmallVector<const Value *, 4> Pointers;
       auto DefLoc = getLocForWriteEx(DefI);
       if (!DefLoc)
         continue;
@@ -1814,8 +1813,7 @@ struct DSEState {
 
   /// \returns true if \p Def is a no-op store, either because it
   /// directly stores back a loaded value or stores zero to a calloced object.
-  bool storeIsNoop(MemoryDef *Def, const MemoryLocation &DefLoc,
-                   const Value *DefUO) {
+  bool storeIsNoop(MemoryDef *Def, const Value *DefUO) {
     StoreInst *Store = dyn_cast<StoreInst>(Def->getMemoryInst());
     MemSetInst *MemSet = dyn_cast<MemSetInst>(Def->getMemoryInst());
     Constant *StoredConstant = nullptr;
@@ -2084,7 +2082,7 @@ static bool eliminateDeadStores(Function &F, AliasAnalysis &AA, MemorySSA &MSSA,
 
     // Check if the store is a no-op.
     if (!Shortend && isRemovable(SI) &&
-        State.storeIsNoop(KillingDef, SILoc, SILocUnd)) {
+        State.storeIsNoop(KillingDef, SILocUnd)) {
       LLVM_DEBUG(dbgs() << "DSE: Remove No-Op Store:\n  DEAD: " << *SI << '\n');
       State.deleteDeadInstruction(SI);
       NumRedundantStores++;