From be4504df268af9f68edc212356cbdacf3bbf97da Mon Sep 17 00:00:00 2001
From: Eli Friedman <eli.friedman@gmail.com>
Date: Thu, 11 Jul 2013 01:32:21 +0000
Subject: Simplify atomic load/store IRGen.

Also fixes a couple minor bugs along the way; see testcases.

llvm-svn: 186049
---
 clang/lib/CodeGen/CGExpr.cpp | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

(limited to 'clang/lib/CodeGen/CGExpr.cpp')

diff --git a/clang/lib/CodeGen/CGExpr.cpp b/clang/lib/CodeGen/CGExpr.cpp
index 419075fe179..b283174514e 100644
--- a/clang/lib/CodeGen/CGExpr.cpp
+++ b/clang/lib/CodeGen/CGExpr.cpp
@@ -2717,11 +2717,10 @@ LValue CodeGenFunction::EmitCastLValue(const CastExpr *E) {
   case CK_BuiltinFnToFnPtr:
     llvm_unreachable("builtin functions are handled elsewhere");
 
-  // These two casts are currently treated as no-ops, although they could
-  // potentially be real operations depending on the target's ABI.
+  // These are never l-values; just use the aggregate emission code.
   case CK_NonAtomicToAtomic:
   case CK_AtomicToNonAtomic:
-    return EmitLValue(E->getSubExpr());
+    return EmitAggExprToLValue(E);
 
   case CK_Dynamic: {
     LValue LV = EmitLValue(E->getSubExpr());
-- 
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