Generate an AST for the conversion from a lambda closure type to a

block pointer that returns a block literal which captures (by copy)
the lambda closure itself. Some aspects of the block literal are left
unspecified, namely the capture variable (which doesn't actually
exist) and the body (which will be filled in by IRgen because it can't
be written as an AST).

Because we're switching to this model, this patch also eliminates
tracking the copy-initialization expression for the block capture of
the conversion function, since that information is now embedded in the
synthesized block literal. -1 side tables FTW.

llvm-svn: 151131

5 files changed, 9 insertions, 1 deletions

diff --git a/clang/lib/CodeGen/CGExpr.cpp b/clang/lib/CodeGen/CGExpr.cpp
index 060841d5078..18aa0fc4317 100644
--- a/clang/lib/CodeGen/CGExpr.cpp
+++ b/clang/lib/CodeGen/CGExpr.cpp
@@ -2096,7 +2096,8 @@ LValue CodeGenFunction::EmitCastLValue(const CastExpr *E) {
   case CK_ARCProduceObject:
   case CK_ARCConsumeObject:
   case CK_ARCReclaimReturnedObject:
-  case CK_ARCExtendBlockObject: {
+  case CK_ARCExtendBlockObject: 
+  case CK_CopyAndAutoreleaseBlockObject: {
     // These casts only produce lvalues when we're binding a reference to a 
     // temporary realized from a (converted) pure rvalue. Emit the expression
     // as a value, copy it into a temporary, and return an lvalue referring to
diff --git a/clang/lib/CodeGen/CGExprAgg.cpp b/clang/lib/CodeGen/CGExprAgg.cpp
index afe70a5dda8..5fb334bd8e8 100644
--- a/clang/lib/CodeGen/CGExprAgg.cpp
+++ b/clang/lib/CodeGen/CGExprAgg.cpp
@@ -614,6 +614,7 @@ void AggExprEmitter::VisitCastExpr(CastExpr *E) {
   case CK_ARCConsumeObject:
   case CK_ARCReclaimReturnedObject:
   case CK_ARCExtendBlockObject:
+  case CK_CopyAndAutoreleaseBlockObject:
     llvm_unreachable("cast kind invalid for aggregate types");
   }
 }
diff --git a/clang/lib/CodeGen/CGExprComplex.cpp b/clang/lib/CodeGen/CGExprComplex.cpp
index 15fa225eb85..ae192cb8365 100644
--- a/clang/lib/CodeGen/CGExprComplex.cpp
+++ b/clang/lib/CodeGen/CGExprComplex.cpp
@@ -413,6 +413,7 @@ ComplexPairTy ComplexExprEmitter::EmitCast(CastExpr::CastKind CK, Expr *Op,
   case CK_ARCConsumeObject:
   case CK_ARCReclaimReturnedObject:
   case CK_ARCExtendBlockObject:
+  case CK_CopyAndAutoreleaseBlockObject:
     llvm_unreachable("invalid cast kind for complex value");
 
   case CK_FloatingRealToComplex:
diff --git a/clang/lib/CodeGen/CGExprConstant.cpp b/clang/lib/CodeGen/CGExprConstant.cpp
index a7cd36862ba..4fc21fe708f 100644
--- a/clang/lib/CodeGen/CGExprConstant.cpp
+++ b/clang/lib/CodeGen/CGExprConstant.cpp
@@ -636,6 +636,7 @@ public:
     case CK_ARCConsumeObject:
     case CK_ARCReclaimReturnedObject:
     case CK_ARCExtendBlockObject:
+    case CK_CopyAndAutoreleaseBlockObject:
       return 0;
 
     // These don't need to be handled here because Evaluate knows how to
diff --git a/clang/lib/CodeGen/CGExprScalar.cpp b/clang/lib/CodeGen/CGExprScalar.cpp
index 6eed2ed346f..76c91a5ff37 100644
--- a/clang/lib/CodeGen/CGExprScalar.cpp
+++ b/clang/lib/CodeGen/CGExprScalar.cpp
@@ -1148,6 +1148,10 @@ Value *ScalarExprEmitter::VisitCastExpr(CastExpr *CE) {
   case CK_ARCExtendBlockObject:
     return CGF.EmitARCExtendBlockObject(E);
 
+  case CK_CopyAndAutoreleaseBlockObject:
+    CGF.ErrorUnsupported(E, "copy/autorelease block object");
+    return 0;
+      
   case CK_FloatingRealToComplex:
   case CK_FloatingComplexCast:
   case CK_IntegralRealToComplex: