Sema: Add counters for synthesized accessors

Author: slavapestov

include/swift/Basic/Statistics.def

@@ -179,6 +179,12 @@ FRONTEND_STATISTIC(Sema, NumDeclsTypechecked)
 /// Number of declarations finalized.
 FRONTEND_STATISTIC(Sema, NumDeclsFinalized)
 
+/// Number of synthesized accessors.
+FRONTEND_STATISTIC(Sema, NumAccessorsSynthesized)
+
+/// Number of synthesized accessor bodies.
+FRONTEND_STATISTIC(Sema, NumAccessorBodiesSynthesized)
+
 /// Number of full function bodies typechecked.
 FRONTEND_STATISTIC(Sema, NumFunctionsTypechecked)
 

lib/Sema/CodeSynthesis.cpp

@@ -234,6 +234,9 @@ static AccessorDecl *createGetterPrototype(AbstractStorageDecl *storage,
   // Always add the getter to the context immediately after the storage.
   addMemberToContextIfNeeded(getter, storage->getDeclContext(), storage);
 
+  if (ctx.Stats)
+    ctx.Stats->getFrontendCounters().NumAccessorsSynthesized++;
+
   return getter;
 }
 
@@ -285,6 +288,9 @@ static AccessorDecl *createSetterPrototype(AbstractStorageDecl *storage,
   assert(getter && "always synthesize setter prototype after get/read");
   addMemberToContextIfNeeded(setter, storage->getDeclContext(), getter);
 
+  if (ctx.Stats)
+    ctx.Stats->getFrontendCounters().NumAccessorsSynthesized++;
+
   return setter;
 }
 
@@ -483,6 +489,9 @@ createCoroutineAccessorPrototype(AbstractStorageDecl *storage,
 
   addMemberToContextIfNeeded(accessor, dc, afterDecl);
 
+  if (ctx.Stats)
+    ctx.Stats->getFrontendCounters().NumAccessorsSynthesized++;
+
   return accessor;
 }
 
@@ -2275,6 +2284,9 @@ synthesizeAccessorBody(AbstractFunctionDecl *fn, void *) {
   auto *accessor = cast<AccessorDecl>(fn);
   auto &ctx = accessor->getASTContext();
 
+  if (ctx.Stats)
+    ctx.Stats->getFrontendCounters().NumAccessorBodiesSynthesized++;
+
   if (accessor->isInvalid() || ctx.hadError())
     return { nullptr, true };