diff --git a/mlir/lib/Dialect/Affine/IR/AffineOps.cpp b/mlir/lib/Dialect/Affine/IR/AffineOps.cpp
--- a/mlir/lib/Dialect/Affine/IR/AffineOps.cpp
+++ b/mlir/lib/Dialect/Affine/IR/AffineOps.cpp
@@ -2641,7 +2641,7 @@
   }
 
   // Parse optional clause of the form: `reduce ("addf", "maxf")`, where the
-  // quoted strings a member of the enum AtomicRMWKind.  
+  // quoted strings a member of the enum AtomicRMWKind.
   SmallVector<Attribute, 4> reductions;
   if (succeeded(parser.parseOptionalKeyword("reduce"))) {
     if (parser.parseLParen())
@@ -2691,13 +2691,12 @@
 //===----------------------------------------------------------------------===//
 
 static LogicalResult verify(AffineYieldOp op) {
-  auto parentOp = op.getParentOp();
+  auto *parentOp = op.getParentOp();
   auto results = parentOp->getResults();
   auto operands = op.getOperands();
 
   if (!isa<AffineParallelOp, AffineIfOp, AffineForOp>(parentOp))
-    return op.emitOpError()
-           << "affine.terminate only terminates If, For or Parallel regions";
+    return op.emitOpError() << "only terminates affine.if/for/parallel regions";
   if (parentOp->getNumResults() != op.getNumOperands())
     return op.emitOpError() << "parent of yield must have same number of "
                                "results as the yield operands";