Now Bitcode reader bug is fixed. Reapply 80839.
authorDevang Patel <dpatel@apple.com>
Thu, 3 Sep 2009 01:39:20 +0000 (01:39 +0000)
committerDevang Patel <dpatel@apple.com>
Thu, 3 Sep 2009 01:39:20 +0000 (01:39 +0000)
commit5f4ac848d94b0a92e19ac7f2b3d0284d7d323173
treeaf81190be5b56edee3349ab035ca80c06e75b145
parentc0ff8c85dcc0bb3c58c15890b180dedaa726cb76
Now Bitcode reader bug is fixed. Reapply 80839.

Use CallbackVH, instead of WeakVH, to hold MDNode elements.
Use FoldingSetNode to unique MDNodes in a context.
Use CallbackVH hooks to update context's MDNodeSet appropriately.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80868 91177308-0d34-0410-b5e6-96231b3b80d8
include/llvm/Constants.h
include/llvm/Metadata.h
lib/VMCore/Constants.cpp
lib/VMCore/ConstantsContext.h
lib/VMCore/LLVMContext.cpp
lib/VMCore/LLVMContextImpl.h
lib/VMCore/Metadata.cpp
unittests/VMCore/MetadataTest.cpp