Upgrade our copy of llvm/clang to 3.4.1 release. This release contains

mostly fixes, for the following upstream bugs:

http://llvm.org/PR16365 http://llvm.org/PR17473 http://llvm.org/PR18000
http://llvm.org/PR18068 http://llvm.org/PR18102 http://llvm.org/PR18165
http://llvm.org/PR18260 http://llvm.org/PR18290 http://llvm.org/PR18316
http://llvm.org/PR18460 http://llvm.org/PR18473 http://llvm.org/PR18515
http://llvm.org/PR18526 http://llvm.org/PR18600 http://llvm.org/PR18762
http://llvm.org/PR18773 http://llvm.org/PR18860 http://llvm.org/PR18994
http://llvm.org/PR19007 http://llvm.org/PR19010 http://llvm.org/PR19033
http://llvm.org/PR19059 http://llvm.org/PR19144 http://llvm.org/PR19326

MFC after:	2 weeks

1 files changed, 6 insertions, 7 deletions

diff --git a/contrib/llvm/tools/clang/lib/Sema/SemaExprCXX.cpp b/contrib/llvm/tools/clang/lib/Sema/SemaExprCXX.cpp
index 07e4657..20118b5 100644
--- a/contrib/llvm/tools/clang/lib/Sema/SemaExprCXX.cpp
+++ b/contrib/llvm/tools/clang/lib/Sema/SemaExprCXX.cpp
@@ -5836,17 +5836,16 @@ static inline bool VariableCanNeverBeAConstantExpression(VarDecl *Var,
   assert(DefVD);
   if (DefVD->isWeak()) return false;
   EvaluatedStmt *Eval = DefVD->ensureEvaluatedStmt();
-  
+
   Expr *Init = cast<Expr>(Eval->Value);
 
   if (Var->getType()->isDependentType() || Init->isValueDependent()) {
-    if (!Init->isValueDependent())
-      return !DefVD->checkInitIsICE();
-    // FIXME: We might still be able to do some analysis of Init here
-    // to conclude that even in a dependent setting, Init can never
-    // be a constexpr - but for now admit agnosticity.
+    // FIXME: Teach the constant evaluator to deal with the non-dependent parts
+    // of value-dependent expressions, and use it here to determine whether the
+    // initializer is a potential constant expression.
     return false;
-  } 
+  }
+
   return !IsVariableAConstantExpression(Var, Context); 
 }