diff --git a/polly/lib/CodeGen/PPCGCodeGeneration.cpp b/polly/lib/CodeGen/PPCGCodeGeneration.cpp
--- a/polly/lib/CodeGen/PPCGCodeGeneration.cpp
+++ b/polly/lib/CodeGen/PPCGCodeGeneration.cpp
@@ -178,7 +178,7 @@
   /// [params] -> { Stmt_phantom[]  -> scalar_to_kill[] }
   isl::union_map MustKills;
 
-  MustKillsInfo() : KillsSchedule(nullptr) {}
+  MustKillsInfo() : KillsSchedule() {}
 };
 
 /// Check if SAI's uses are entirely contained within Scop S.
@@ -227,7 +227,7 @@
   //     - filter: "[control] -> { }"
   // So, we choose to not create this to keep the output a little nicer,
   // at the cost of some code complexity.
-  Info.KillsSchedule = nullptr;
+  Info.KillsSchedule = {};
 
   for (isl::id &ToKillId : KillMemIds) {
     isl::id KillStmtId = isl::id::alloc(