SILOwnershipVerifier: rename users to uses.

For basic sanity. Users are instructions, not operands.

Author: atrick

lib/SIL/Verifier/SILOwnershipVerifier.cpp

@@ -288,13 +288,13 @@ bool SILValueOwnershipChecker::gatherUsers(
   // Ok, we have some sort of borrow introducer. We need to recursively validate
   // that all of its uses (including sub-scopes) are before any end_borrows that
   // may end the lifetime of the borrow introducer. With that in mind, gather up
-  // our initial list of users.
-  SmallVector<Operand *, 8> users;
-  llvm::copy(value->getUses(), std::back_inserter(users));
+  // our initial list of uses.
+  SmallVector<Operand *, 8> uses;
+  llvm::copy(value->getUses(), std::back_inserter(uses));
 
   bool foundError = false;
-  while (!users.empty()) {
-    Operand *op = users.pop_back_val();
+  while (!uses.empty()) {
+    Operand *op = uses.pop_back_val();
     SILInstruction *user = op->getUser();
 
     // If this op is a type dependent operand, skip it. It is not interesting
@@ -416,7 +416,7 @@ bool SILValueOwnershipChecker::gatherUsers(
         assert(result->getOwnershipKind() == OwnershipKind::Guaranteed &&
                "Our value is guaranteed and this is a forwarding instruction. "
                "Should have guaranteed ownership as well.");
-        llvm::copy(result->getUses(), std::back_inserter(users));
+        llvm::copy(result->getUses(), std::back_inserter(uses));
       }
       continue;
     }
@@ -452,7 +452,7 @@ bool SILValueOwnershipChecker::gatherUsers(
 
       // Otherwise add all users of this BBArg to the worklist to visit
       // recursively.
-      llvm::copy(succArg->getUses(), std::back_inserter(users));
+      llvm::copy(succArg->getUses(), std::back_inserter(uses));
     }
   }