ProgramPoint cleanup after the previous commit r141408 (remove the copy constructor, mark withTag const).

Move getProgramPoint() utility from CoreEngine.cpp into ProgramPoint.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@141414 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/ProgramPoint.cpp b/lib/Analysis/ProgramPoint.cpp
index 9b7df2c..3a0bbd5 100644
--- a/lib/Analysis/ProgramPoint.cpp
+++ b/lib/Analysis/ProgramPoint.cpp
@@ -18,6 +18,31 @@
 
 ProgramPointTag::~ProgramPointTag() {}
 
+ProgramPoint ProgramPoint::getProgramPoint(const Stmt *S, ProgramPoint::Kind K,
+                                           const LocationContext *LC,
+                                           const ProgramPointTag *tag){
+  switch (K) {
+    default:
+      llvm_unreachable("Unhandled ProgramPoint kind");
+    case ProgramPoint::PreStmtKind:
+      return PreStmt(S, LC, tag);
+    case ProgramPoint::PostStmtKind:
+      return PostStmt(S, LC, tag);
+    case ProgramPoint::PreLoadKind:
+      return PreLoad(S, LC, tag);
+    case ProgramPoint::PostLoadKind:
+      return PostLoad(S, LC, tag);
+    case ProgramPoint::PreStoreKind:
+      return PreStore(S, LC, tag);
+    case ProgramPoint::PostStoreKind:
+      return PostStore(S, LC, tag);
+    case ProgramPoint::PostLValueKind:
+      return PostLValue(S, LC, tag);
+    case ProgramPoint::PostPurgeDeadSymbolsKind:
+      return PostPurgeDeadSymbols(S, LC, tag);
+  }
+}
+
 SimpleProgramPointTag::SimpleProgramPointTag(StringRef description)
   : desc(description) {}