Introduce support for template instantiation of lambda

expressions. This is mostly a simple refact, splitting the main "start
a lambda expression" function into smaller chunks that are driven
either from the parser (Sema::ActOnLambdaExpr) or during AST
transformation (TreeTransform::TransformLambdaExpr). A few minor
interesting points:

  - Added new entry points for TreeTransform, so that we can
  explicitly establish the link between the lambda closure type in the
  template and the lambda closure type in the instantiation.
  - Added a bit into LambdaExpr specifying whether it had an explicit
  result type or not. We should have had this anyway.

This code is 'lightly' tested.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150417 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 8 insertions, 0 deletions

diff --git a/lib/Sema/SemaTemplateInstantiate.cpp b/lib/Sema/SemaTemplateInstantiate.cpp
index bd5a1ed3d0..073d64407a 100644
--- a/lib/Sema/SemaTemplateInstantiate.cpp
+++ b/lib/Sema/SemaTemplateInstantiate.cpp
@@ -732,6 +732,14 @@ namespace {
     /// this declaration.
     Decl *TransformDecl(SourceLocation Loc, Decl *D);
 
+    void transformAttrs(Decl *Old, Decl *New) { 
+      SemaRef.InstantiateAttrs(TemplateArgs, Old, New);
+    }
+
+    void transformedLocalDecl(Decl *Old, Decl *New) {
+      SemaRef.CurrentInstantiationScope->InstantiatedLocal(Old, New);
+    }
+    
     /// \brief Transform the definition of the given declaration by
     /// instantiating it.
     Decl *TransformDefinition(SourceLocation Loc, Decl *D);