[DEBUG INFO] Emit debug info for type used in explicit cast only.
Currently debug info for types used in explicit cast only is not emitted. It happened after a patch for better alignment handling. This patch fixes this bug.
Differential Revision: http://reviews.llvm.org/D13582

llvm-svn: 250795
diff --git a/clang/lib/CodeGen/CGExprConstant.cpp b/clang/lib/CodeGen/CGExprConstant.cpp
index 1f4b1dc..bbd04dd 100644
--- a/clang/lib/CodeGen/CGExprConstant.cpp
+++ b/clang/lib/CodeGen/CGExprConstant.cpp
@@ -636,6 +636,8 @@
   }
 
   llvm::Constant *VisitCastExpr(CastExpr* E) {
+    if (const auto *ECE = dyn_cast<ExplicitCastExpr>(E))
+      CGM.EmitExplicitCastExprType(ECE, CGF);
     Expr *subExpr = E->getSubExpr();
     llvm::Constant *C = CGM.EmitConstantExpr(subExpr, subExpr->getType(), CGF);
     if (!C) return nullptr;