commit f4bcfa1b1850711d5eb092f2b0639331ef9f09f1
author Eli Friedman <eli.friedman@gmail.com> Wed Jun 27 21:19:48 2012 +0000
committer Eli Friedman <eli.friedman@gmail.com> Wed Jun 27 21:19:48 2012 +0000
tree 12857d6d89d1ee1a6c8522fe64521cd5b0d402cd
parent 7c16d58f8546365d1f56468e9ae1ecfa182afca0

Propagate lvalue alignment into bitfields.  Per report on cfe-dev.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@159295 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/CGObjCRuntime.cpp

diff --git a/lib/CodeGen/CGObjCRuntime.cpp b/lib/CodeGen/CGObjCRuntime.cpp
index 0f5cbc1..7cf0ed2 100644
--- a/lib/CodeGen/CGObjCRuntime.cpp
+++ b/lib/CodeGen/CGObjCRuntime.cpp
@@ -120,6 +120,8 @@
   uint64_t ContainingTypeAlign = CGF.CGM.getContext().getTargetInfo().getCharAlign();
   uint64_t ContainingTypeSize = TypeSizeInBits - (FieldBitOffset - BitOffset);
   uint64_t BitFieldSize = Ivar->getBitWidthValue(CGF.getContext());
+  CharUnits ContainingTypeAlignCharUnits = 
+    CGF.CGM.getContext().toCharUnitsFromBits(ContainingTypeAlign);
 
   // Allocate a new CGBitFieldInfo object to describe this access.
   //
@@ -132,7 +134,8 @@
                              ContainingTypeSize, ContainingTypeAlign));
 
   return LValue::MakeBitfield(V, *Info,
-                              IvarTy.withCVRQualifiers(CVRQualifiers));
+                              IvarTy.withCVRQualifiers(CVRQualifiers),
+                              ContainingTypeAlignCharUnits);
 }
 
 namespace {