Implicitly define a lambda's conversion functions (to function

pointers and block pointers). We use dummy definitions to keep the
invariant that an implicit, used definition has a body; IR generation
will substitute the actual contents, since they can't be represented
as C++. 

For the block pointer case, compute the copy-initialization needed to
capture the lambda object in the block, which IR generation will need
later.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150645 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 15 insertions, 0 deletions

diff --git a/lib/AST/DeclCXX.cpp b/lib/AST/DeclCXX.cpp
index 5b9ab4ff5c..b5b3f12f5e 100644
--- a/lib/AST/DeclCXX.cpp
+++ b/lib/AST/DeclCXX.cpp
@@ -1759,6 +1759,21 @@ CXXConversionDecl::Create(ASTContext &C, CXXRecordDecl *RD,
                                    EndLocation);
 }
 
+bool CXXConversionDecl::isLambdaToBlockPointerConversion() const {
+  return isImplicit() && getParent()->isLambda() &&
+         getConversionType()->isBlockPointerType();
+}
+
+Expr *CXXConversionDecl::getLambdaToBlockPointerCopyInit() const {
+  assert(isLambdaToBlockPointerConversion());
+  return getASTContext().LambdaBlockPointerInits[this];
+}
+
+void CXXConversionDecl::setLambdaToBlockPointerCopyInit(Expr *Init) {
+  assert(isLambdaToBlockPointerConversion());
+  getASTContext().LambdaBlockPointerInits[this] = Init;
+}
+
 void LinkageSpecDecl::anchor() { }
 
 LinkageSpecDecl *LinkageSpecDecl::Create(ASTContext &C,