2 Commits

Author	SHA1	Message	Date
Sanjoy Das	83c8485899	Fix CodeGenPrepare::stripInvariantGroupMetadata ... `dropUnknownNonDebugMetadata` takes a list of "known" metadata IDs. The only reason it worked at all is that `getMetadataID` returns something unrelated -- it returns the subclass ID of the receiver (which is used in `dyn_cast` etc.). That does not numerically match `LLVMContext::MD_invariant_group` and ends up dropping `invariant_group` along with every other metadata that does not numerically match `LLVMContext::MD_invariant_group`. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@289973 91177308-0d34-0410-b5e6-96231b3b80d8	2016-12-16 18:52:33 +00:00
Piotr Padlewski	f3abce4a8e	Introducing llvm.invariant.group.barrier intrinsic ... For more info for what reason it was invented, goto: http://lists.llvm.org/pipermail/cfe-dev/2015-July/044227.html invariant.group.barrier: http://reviews.llvm.org/D12310 docs: http://reviews.llvm.org/D11399 CodeGenPrepare: http://reviews.llvm.org/D12875 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@247711 91177308-0d34-0410-b5e6-96231b3b80d8	2015-09-15 18:32:14 +00:00