[ADT] Use "static inline" to initialize EmptyDivergenceDesc; (NFC) (#160445)

In C++17, we can initialize a static member variable with "static
inline" as part of the class definition.  With this, we can eliminate
the out-of-line static initializer involving boilerplate template
code.

1 files changed, 1 insertions, 5 deletions

diff --git a/llvm/include/llvm/ADT/GenericUniformityImpl.h b/llvm/include/llvm/ADT/GenericUniformityImpl.h
index 3b9b7f2..141816c3 100644
--- a/llvm/include/llvm/ADT/GenericUniformityImpl.h
+++ b/llvm/include/llvm/ADT/GenericUniformityImpl.h
@@ -310,7 +310,7 @@ public:
   const DivergenceDescriptor &getJoinBlocks(const BlockT *DivTermBlock);
 
 private:
-  static DivergenceDescriptor EmptyDivergenceDesc;
+  static inline DivergenceDescriptor EmptyDivergenceDesc;
 
   ModifiedPO CyclePO;
 
@@ -742,10 +742,6 @@ public:
 };
 
 template <typename ContextT>
-typename llvm::GenericSyncDependenceAnalysis<ContextT>::DivergenceDescriptor
-    llvm::GenericSyncDependenceAnalysis<ContextT>::EmptyDivergenceDesc;
-
-template <typename ContextT>
 llvm::GenericSyncDependenceAnalysis<ContextT>::GenericSyncDependenceAnalysis(
     const ContextT &Context, const DominatorTreeT &DT, const CycleInfoT &CI)
     : CyclePO(Context), DT(DT), CI(CI) {