Don't forget that strcpy and friends return a pointer to the destination, so

it's not a dead store if that pointer is used. Whoops!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164583 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Transforms/Scalar/DeadStoreElimination.cpp

@@ -266,8 +266,8 @@ static bool isRemovable(Instruction *I) {
     }
   }
 
-  if (CallSite(I))  // If we assume hasMemoryWrite(I) is true,
-    return true;    // then there's nothing left to check.
+  if (CallSite CS = I)
+    return CS.getInstruction()->use_empty();
 
   return false;
 }