---

yaml
---
r: 319413
b: refs/heads/master-rebranch
c: 6c192e2
h: refs/heads/master
i:
  319411: b18371b

Author: swift-ci

[refs]

@@ -1457,4 +1457,4 @@ refs/tags/swift-DEVELOPMENT-SNAPSHOT-2019-08-02-a: ddd2b2976aa9bfde5f20fe37f6bd2
 refs/tags/swift-DEVELOPMENT-SNAPSHOT-2019-08-03-a: 171cc166f2abeb5ca2a4003700a8a78a108bd300
 refs/heads/benlangmuir-patch-1: baaebaf39d52f3bf36710d4fe40cf212e996b212
 refs/heads/i-do-redeclare: 8c4e6d5de5c1e3f0a2cedccf319df713ea22c48e
-refs/heads/master-rebranch: 72c066d790919ff8bab0b67c876c052e83ec86df
+refs/heads/master-rebranch: 6c192e2081d81e3b67cbd46e76a350c3e27ed054

branches/master-rebranch/include/swift/FrontendTool/FrontendTool.h

@@ -42,6 +42,19 @@ class FrontendObserver {
 
   /// The frontend has configured the compiler instance.
   virtual void configuredCompiler(CompilerInstance &instance);
+
+  /// The frontend has performed semantic analysis.
+  virtual void performedSemanticAnalysis(CompilerInstance &instance);
+
+  /// The frontend has performed basic SIL generation.
+  /// SIL diagnostic passes have not yet been applied.
+  virtual void performedSILGeneration(SILModule &module);
+
+  /// The frontend has executed the SIL optimization and diagnostics pipelines.
+  virtual void performedSILProcessing(SILModule &module);
+
+  // TODO: maybe enhance this interface to hear about IRGen and LLVM
+  // progress.
 };
 
 namespace frontend {

branches/master-rebranch/lib/FrontendTool/FrontendTool.cpp

@@ -1005,6 +1005,9 @@ static bool performCompile(CompilerInstance &Instance,
   if (Action == FrontendOptions::ActionType::ResolveImports)
     return Context.hadError();
 
+  if (observer)
+    observer->performedSemanticAnalysis(Instance);
+
   if (Stats)
     countStatsPostSema(*Stats, Instance);
 
@@ -1238,6 +1241,9 @@ static bool performCompileStepsPostSILGen(
   if (auto *SF = MSF.dyn_cast<SourceFile *>())
     ricd.emplace(*SF);
 
+  if (observer)
+    observer->performedSILGeneration(*SM);
+
   if (Stats)
     countStatsPostSILGen(*Stats, *SM);
 
@@ -1284,6 +1290,9 @@ static bool performCompileStepsPostSILGen(
   if (Instance.performSILProcessing(SM.get(), Stats))
     return true;
 
+  if (observer)
+    observer->performedSILProcessing(*SM);
+
   emitAnyWholeModulePostTypeCheckSupplementaryOutputs(Instance, Invocation,
                                                       moduleIsPublic);
 
@@ -1847,3 +1856,6 @@ int swift::performFrontend(ArrayRef<const char *> Args,
 
 void FrontendObserver::parsedArgs(CompilerInvocation &invocation) {}
 void FrontendObserver::configuredCompiler(CompilerInstance &instance) {}
+void FrontendObserver::performedSemanticAnalysis(CompilerInstance &instance) {}
+void FrontendObserver::performedSILGeneration(SILModule &module) {}
+void FrontendObserver::performedSILProcessing(SILModule &module) {}