Support __PRETTY_FUNCTION__ and friends in Obj-C methods.

Add CodeGenFunction::EmitUnsupportedLValue 
 - Gives error and returns undef value.

Swap some asserts() over to using EmitUnsupportedLValue
 - Rumor has it users (and even some developers) prefer carat
   diagnostics to backtraces.
 - Works better in Release-Asserts to boot.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@55328 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 6 insertions, 0 deletions

diff --git a/lib/CodeGen/CodeGenFunction.h b/lib/CodeGen/CodeGenFunction.h
index 0d82e32861..2ba6b8ddcc 100644
--- a/lib/CodeGen/CodeGenFunction.h
+++ b/lib/CodeGen/CodeGenFunction.h
@@ -223,6 +223,12 @@ public:
   //                         LValue Expression Emission
   //===--------------------------------------------------------------------===//
 
+  /// EmitUnsupportedLValue - Emit a dummy l-value using the type of E
+  /// and issue an ErrorUnsupported style diagnostic (using the
+  /// provided Name).
+  LValue EmitUnsupportedLValue(const Expr *E,
+                               const char *Name);
+
   /// EmitLValue - Emit code to compute a designator that specifies the location
   /// of the expression.
   ///