Commit Graph

3 Commits

Author SHA1 Message Date
Piotr Padlewski 276a78d860 Emiting invariant.group.barrier for ctors bugfix
Ensure that the vptr store in the most-derived constructor is not behind
an invariant group barrier. Previously, the base-most vptr store would
be the one behind no barrier, and that could result in the creator of
the object thinking it had the base-most vtable.
This bug caused clang call pure virtual functions when called from
constructor body.

http://reviews.llvm.org/D13373

llvm-svn: 249197
2015-10-02 22:12:40 +00:00
Piotr Padlewski 08bd7bf00c invariant.group-for-vptrs test fix
llvm-svn: 247733
2015-09-15 23:04:47 +00:00
Piotr Padlewski 4b1ac72cd4 Decorating vptr load & stores with !invariant.group
Adding !invariant.group to vptr load/stores for devirtualization purposes.
For more goto:
http://lists.llvm.org/pipermail/cfe-dev/2015-July/044227.html

http://reviews.llvm.org/D12026

llvm-svn: 247725
2015-09-15 21:46:55 +00:00