First crack at PowerPC 3.6 release notes

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225695 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/docs/ReleaseNotes.rst b/docs/ReleaseNotes.rst
index b4d68be9f851330edae60c4756250d34acff4de5..b9498302a972be93470efeae0c611f7a6cf8d986 100644 (file)
--- a/docs/ReleaseNotes.rst
+++ b/docs/ReleaseNotes.rst
@@ -183,7 +183,25 @@ Miscellaneous
 Changes to the PowerPC Target
 -----------------------------
 
-During this release ...
+There are numerous improvements to the PowerPC target in this release:
+
+* LLVM now generates the Vector-Scalar eXtension (VSX) instructions from
+  version 2.06 of the Power ISA, for both big- and little-endian targets.
+
+* LLVM now has a POWER8 instruction scheduling description.
+
+* Address Sanitizer (ASAN) support is now fully functional.
+
+* Performance of simple atomic accesses has been greatly improved.
+
+* Atomic fences now use light-weight syncs where possible, again providing
+  significant performance benefit.
+
+* The PowerPC target now supports PIC levels (-fPIC vs. -fpic).
+
+* PPC32 SVR4 now supports small-model PIC.
+
+* There have been many smaller bug fixes and performance improvements.
 
 External Open Source Projects Using LLVM 3.6
 ============================================