diff --git a/src/hotspot/share/c1/c1_LIRGenerator.cpp b/src/hotspot/share/c1/c1_LIRGenerator.cpp
index 5013ad9c1b6..5dbb6d6574e 100644
--- a/src/hotspot/share/c1/c1_LIRGenerator.cpp
+++ b/src/hotspot/share/c1/c1_LIRGenerator.cpp
@@ -78,6 +78,7 @@ void PhiResolverState::reset() {
 PhiResolver::PhiResolver(LIRGenerator* gen)
  : _gen(gen)
  , _state(gen->resolver_state())
+ , _loop(nullptr)
  , _temp(LIR_OprFact::illegalOpr)
 {
   // reinitialize the shared state arrays