[llvm-branch-commits] [llvm-branch] r311919 - ReleaseNotes: LLVM_REVERSE_ITERATION

Hans Wennborg via llvm-branch-commits llvm-branch-commits at lists.llvm.org
Mon Aug 28 13:16:59 PDT 2017

Author: hans
Date: Mon Aug 28 13:16:59 2017
New Revision: 311919

URL: http://llvm.org/viewvc/llvm-project?rev=311919&view=rev

By Mandeep Singh Grang!


Modified: llvm/branches/release_50/docs/ReleaseNotes.rst
URL: http://llvm.org/viewvc/llvm-project/llvm/branches/release_50/docs/ReleaseNotes.rst?rev=311919&r1=311918&r2=311919&view=diff
--- llvm/branches/release_50/docs/ReleaseNotes.rst (original)
+++ llvm/branches/release_50/docs/ReleaseNotes.rst Mon Aug 28 13:16:59 2017
@@ -46,6 +46,12 @@ Non-comprehensive list of changes in thi
   HTML.  The tool processes the YAML files produced by clang with the
   -fsave-optimization-record option.
+* A new CMake macro ``LLVM_REVERSE_ITERATION`` has been added. If enabled, all
+  supported unordered LLVM containers would be iterated in reverse order. This
+  is useful for uncovering non-determinism caused by iteration of unordered
+  containers. Currently, it supports reverse iteration of SmallPtrSet and
+  DenseMap.
 Changes to the LLVM IR

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