Update 3.7 Release Note mentionning the non-optionality of the DataLayout

[oota-llvm.git] / docs / ReleaseNotes.rst

diff --git a/docs/ReleaseNotes.rst b/docs/ReleaseNotes.rst
index a3b234e2d9f946456eb249f0be91b81e7fc42b69..c0d2ea18981e6602f8a78a7fc29b97e593b26310 100644 (file)
--- a/docs/ReleaseNotes.rst
+++ b/docs/ReleaseNotes.rst
@@ -44,6 +44,15 @@ Non-comprehensive list of changes in this release
 * The minimum required Visual Studio version for building LLVM is now 2013
   Update 4.
 
+* A new documentation page, :doc:`Frontend/PerformanceTips`, contains a
+  collection of tips for frontend authors on how to generate IR which LLVM is
+  able to effectively optimize.
+
+* The DataLayout is no longer optional. All the IR level optimizations expects
+  it to be present and the API has been changed to use a reference instead of
+  a pointer to make it explicit. The Module owns the datalayout and it has to
+  match the one attached to the TargetMachine for generating code.
+
 * ... next change ...
 
 .. NOTE