[VPlan] Update ifdef.
llvm-svn: 346858
diff --git a/llvm/lib/Transforms/Vectorize/VPlanSLP.cpp b/llvm/lib/Transforms/Vectorize/VPlanSLP.cpp
index 679fb51..5c64662 100644
--- a/llvm/lib/Transforms/Vectorize/VPlanSLP.cpp
+++ b/llvm/lib/Transforms/Vectorize/VPlanSLP.cpp
@@ -362,14 +362,14 @@
// If we already visited this instruction bundle, re-use the existing node
auto I = BundleToCombined.find(to_vector<4>(Values));
if (I != BundleToCombined.end()) {
-#ifdef NDEBUG
+#ifndef NDEBUG
// Check that the resulting graph is a tree. If we re-use a node, this means
// its values have multiple users. We only allow this, if all users of each
// value are the same instruction.
for (auto *V : Values) {
auto UI = V->user_begin();
auto *FirstUser = *UI++;
- while (UI != V->use_end()) {
+ while (UI != V->user_end()) {
assert(*UI == FirstUser && "Currently we only support SLP trees.");
UI++;
}