PCH support for return statements.

Optimize PCH encoding for switch-case statements slightly, by making
the switch-case numbering local to a particular statement.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69355 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 9 insertions, 0 deletions

diff --git a/lib/Frontend/PCHWriter.cpp b/lib/Frontend/PCHWriter.cpp
index 29c9eb81f4..91490549ea 100644
--- a/lib/Frontend/PCHWriter.cpp
+++ b/lib/Frontend/PCHWriter.cpp
@@ -458,6 +458,7 @@ namespace {
     void VisitForStmt(ForStmt *S);
     void VisitContinueStmt(ContinueStmt *S);
     void VisitBreakStmt(BreakStmt *S);
+    void VisitReturnStmt(ReturnStmt *S);
     void VisitExpr(Expr *E);
     void VisitPredefinedExpr(PredefinedExpr *E);
     void VisitDeclRefExpr(DeclRefExpr *E);
@@ -592,6 +593,13 @@ void PCHStmtWriter::VisitBreakStmt(BreakStmt *S) {
   Code = pch::STMT_BREAK;
 }
 
+void PCHStmtWriter::VisitReturnStmt(ReturnStmt *S) {
+  VisitStmt(S);
+  Writer.WriteSubStmt(S->getRetValue());
+  Writer.AddSourceLocation(S->getReturnLoc(), Record);
+  Code = pch::STMT_RETURN;
+}
+
 void PCHStmtWriter::VisitExpr(Expr *E) {
   VisitStmt(E);
   Writer.AddTypeRef(E->getType(), Record);
@@ -1822,6 +1830,7 @@ void PCHWriter::FlushStmts() {
   }
 
   StmtsToEmit.clear();
+  SwitchCaseIDs.clear();
 }
 
 unsigned PCHWriter::RecordSwitchCaseID(SwitchCase *S) {