diff --git a/mlir/include/mlir/Dialect/SCF/IR/SCF.h b/mlir/include/mlir/Dialect/SCF/IR/SCF.h
--- a/mlir/include/mlir/Dialect/SCF/IR/SCF.h
+++ b/mlir/include/mlir/Dialect/SCF/IR/SCF.h
@@ -60,11 +60,11 @@
 bool insideMutuallyExclusiveBranches(Operation *a, Operation *b);
 
 /// An owning vector of values, handy to return from functions.
-using ValueVector = std::vector<Value>;
-using LoopVector = std::vector<scf::ForOp>;
+using ValueVector = SmallVector<Value>;
+using LoopVector = SmallVector<scf::ForOp>;
 struct LoopNest {
-  ResultRange getResults() { return loops.front().getResults(); }
   LoopVector loops;
+  ValueVector results;
 };
 
 /// Creates a perfect nest of "for" loops, i.e. all loops but the innermost
diff --git a/mlir/lib/Dialect/Linalg/Transforms/Tiling.cpp b/mlir/lib/Dialect/Linalg/Transforms/Tiling.cpp
--- a/mlir/lib/Dialect/Linalg/Transforms/Tiling.cpp
+++ b/mlir/lib/Dialect/Linalg/Transforms/Tiling.cpp
@@ -670,7 +670,7 @@
     if (failed(tilePadOp(rewriter, op, newPadOp, loopNest, options)))
       return failure();
     // Replace all uses of the original tensor::PadOp.
-    rewriter.replaceOp(op, loopNest.getResults()[0]);
+    rewriter.replaceOp(op, loopNest.results.front());
     return success();
   }
 
diff --git a/mlir/lib/Dialect/SCF/IR/SCF.cpp b/mlir/lib/Dialect/SCF/IR/SCF.cpp
--- a/mlir/lib/Dialect/SCF/IR/SCF.cpp
+++ b/mlir/lib/Dialect/SCF/IR/SCF.cpp
@@ -520,7 +520,7 @@
     assert(results.size() == iterArgs.size() &&
            "loop nest body must return as many values as loop has iteration "
            "arguments");
-    return LoopNest();
+    return LoopNest{{}, std::move(results)};
   }
 
   // First, create the loop structure iteratively using the body-builder
@@ -570,9 +570,9 @@
   builder.create<scf::YieldOp>(loc, results);
 
   // Return the loops.
-  LoopNest res;
-  res.loops.assign(loops.begin(), loops.end());
-  return res;
+  ValueVector nestResults;
+  llvm::copy(loops.front().getResults(), std::back_inserter(nestResults));
+  return LoopNest{std::move(loops), std::move(nestResults)};
 }
 
 LoopNest mlir::scf::buildLoopNest(
diff --git a/mlir/test/lib/Dialect/Tensor/TestTensorTransforms.cpp b/mlir/test/lib/Dialect/Tensor/TestTensorTransforms.cpp
--- a/mlir/test/lib/Dialect/Tensor/TestTensorTransforms.cpp
+++ b/mlir/test/lib/Dialect/Tensor/TestTensorTransforms.cpp
@@ -199,7 +199,7 @@
         });
 
     if (!nest.loops.empty())
-      rewriter.replaceOp(op, nest.getResults());
+      rewriter.replaceOp(op, nest.results);
     else
       rewriter.replaceOp(op, insertResult);