[llvm-branch-commits] [llvm-branch] r230277 - Release Notes: add text about garbage collection, from Philip Reames

Hans Wennborg hans at hanshq.net
Mon Feb 23 15:00:56 PST 2015

Author: hans
Date: Mon Feb 23 17:00:55 2015
New Revision: 230277

URL: http://llvm.org/viewvc/llvm-project?rev=230277&view=rev
Release Notes: add text about garbage collection, from Philip Reames


Modified: llvm/branches/release_36/docs/ReleaseNotes.rst
URL: http://llvm.org/viewvc/llvm-project/llvm/branches/release_36/docs/ReleaseNotes.rst?rev=230277&r1=230276&r2=230277&view=diff
--- llvm/branches/release_36/docs/ReleaseNotes.rst (original)
+++ llvm/branches/release_36/docs/ReleaseNotes.rst Mon Feb 23 17:00:55 2015
@@ -382,6 +382,24 @@ The PreserveSource linker mode was remov
 It was fairly broken and was removed.
+Garbage Collection
+A new experimental mechanism for describing a garbage collection safepoint was
+added to LLVM.  The new mechanism was not complete at the point this release
+was branched so it is recommended that anyone interested in using this
+mechanism track the ongoing development work on tip of tree.  The hope is that
+these intrinsics will be ready for general use by 3.7.  Documentation can be
+found `here <http://llvm.org/docs/Statepoints.html>`_.
+The existing gc.root implementation is still supported and as fully featured
+as it ever was.  However, two features from GCStrategy will likely be removed
+in the 3.7 release (performCustomLowering and findCustomSafePoints).  If you
+have a use case for either, please mention it on llvm-dev so that it can be
+considered for future development.
+We are expecting to migrate away from gc.root in the 3.8 time frame,
+but both mechanism will be supported in 3.7.
 Changes to the ARM Backend

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