[llvm-branch-commits] [llvm-branch] r245109 - ReleaseNotes: switch lowering

[Hans Wennborg via llvm-branch-commits]

Author: hans
Date: Fri Aug 14 17:31:50 2015
New Revision: 245109

URL: http://llvm.org/viewvc/llvm-project?rev=245109&view=rev
Log:
ReleaseNotes: switch lowering

Modified:
    llvm/branches/release_37/docs/ReleaseNotes.rst

Modified: llvm/branches/release_37/docs/ReleaseNotes.rst
URL: http://llvm.org/viewvc/llvm-project/llvm/branches/release_37/docs/ReleaseNotes.rst?rev=245109&r1=245108&r2=245109&view=diff
==============================================================================
--- llvm/branches/release_37/docs/ReleaseNotes.rst (original)
+++ llvm/branches/release_37/docs/ReleaseNotes.rst Fri Aug 14 17:31:50 2015
@@ -70,6 +70,11 @@ Non-comprehensive list of changes in thi
   instruction set that can be dynamically loaded into the Linux kernel via the
   `bpf(2) <http://man7.org/linux/man-pages/man2/bpf.2.html>`_ syscall.
 
+* Switch-case lowering was rewritten to avoid generating unbalanced search trees
+  (`PR22262 <http://llvm.org/pr22262>`_) and to exploit profile information
+  when available. Some lowering strategies are now disabled when optimizations
+  are turned off, to save compile time.
+
 * ... next change ...
 
 .. NOTE