1 files changed, 1 insertions, 3 deletions
diff --git a/mlir/lib/Transforms/LoopUnrollAndJam.cpp b/mlir/lib/Transforms/LoopUnrollAndJam.cpp
index 76668c7f0b5..87e2770aa41 100644
--- a/mlir/lib/Transforms/LoopUnrollAndJam.cpp
+++ b/mlir/lib/Transforms/LoopUnrollAndJam.cpp
@@ -82,12 +82,10 @@ struct LoopUnrollAndJam : public FunctionPass {
   PassResult runOnFunction(Function *f) override;
   bool runOnAffineForOp(OpPointer<AffineForOp> forOp);
 
-  static char passID;
+  constexpr static PassID passID = {};
 };
 } // end anonymous namespace
 
-char LoopUnrollAndJam::passID = 0;
-
 FunctionPass *mlir::createLoopUnrollAndJamPass(int unrollJamFactor) {
   return new LoopUnrollAndJam(
       unrollJamFactor == -1 ? None : Optional<unsigned>(unrollJamFactor));