Put if statement inside DEBUG

Author: SamTebbs33

llvm/lib/Transforms/Vectorize/LoopVectorize.cpp

@@ -5034,10 +5034,11 @@ calculateRegisterUsage(VPlan &Plan, ArrayRef<ElementCount> VFs,
             else if (auto *PartialReductionR =
                          dyn_cast<VPPartialReductionRecipe>(R))
               VF = VF.divideCoefficientBy(PartialReductionR->getVFScaleFactor());
-            if (VF != VFs[J])
-              LLVM_DEBUG(dbgs() << "LV(REG): Scaled down VF from " << VFs[J]
-                                << " to " << VF << " for ";
-                         R->dump(););
+            LLVM_DEBUG(if (VF != VFs[J]) {
+              dbgs() << "LV(REG): Scaled down VF from " << VFs[J] << " to "
+                     << VF << " for ";
+              R->dump();
+            });
 
             for (VPValue *DefV : R->definedValues()) {
               Type *ScalarTy = TypeInfo.inferScalarType(DefV);