ARM: Mention r251322 in release notes.

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

diff --git a/docs/ReleaseNotes.rst b/docs/ReleaseNotes.rst
index 3bb5b8a85dc56c763717757dd111925e9e2a351b..7b284d59656ba80bd92d3cbe9607b606ffaa317a 100644 (file)
--- a/docs/ReleaseNotes.rst
+++ b/docs/ReleaseNotes.rst
@@ -69,6 +69,11 @@ Non-comprehensive list of changes in this release
 
 * Support for dematerializing has been dropped.
 
+* RegisterScheduler::setDefault was removed. Targets that used to call into the
+  command line parser to set the DAGScheduler, and that don't have enough
+  control with setSchedulingPreference, should look into overriding the
+  SubTargetHook "getDAGScheduler()".
+
 * ``ilist_iterator<T>`` no longer has implicit conversions to and from ``T*``,
   since ``ilist_iterator<T>`` may be pointing at the sentinel (which is usually
   not of type ``T`` at all).  To convert from an iterator ``I`` to a pointer,
@@ -103,10 +108,35 @@ Non-comprehensive list of changes in this release
 
    Makes programs 10x faster by doing Special New Thing.
 
-Changes to the ARM Backend
---------------------------
 
- During this release ...
+Changes to the ARM Backends
+---------------------------
+
+During this release the AArch64 target has:
+
+* Added support for more sanitizers (MSAN, TSAN) and made them compatible with
+  all VMA kernel configurations (kurrently tested on 39 and 42 bits).
+* Gained initial LLD support in the new ELF back-end
+* Extended the Load/Store optimiser and cleaned up some of the bad decisions
+  made earlier.
+* Expanded LLDB support, including watchpoints, native building, Renderscript,
+  LLDB-server, debugging 32-bit applications.
+* Added support for the ``Exynos M1`` chip.
+
+During this release the ARM target has:
+
+* Gained massive performance improvements on embedded benchmarks due to finally
+  running the stride vectorizer in full form, incrementing the performance gains
+  that we already had in the previous releases with limited stride vectorization.
+* Expanded LLDB support, including watchpoints, unwind tables
+* Extended the Load/Store optimiser and cleaned up some of the bad decisions
+  made earlier.
+* Simplified code generation for global variable addresses in ELF, resulting in
+  a significant (4% in Chromium) reduction in code size.
+* Gained some additional code size improvements, though there's still a long road
+  ahead, especially for older cores.
+* Added some EABI floating point comparison functions to Compiler-RT
+* Added support for Windows+GNU triple, +features in -mcpu/-march options.
 
 
 Changes to the MIPS Target
@@ -157,7 +187,7 @@ fixes:
   the Integrated Assembler.
 * Added support for atomic load and atomic store.
 * Corrected debug info when dynamically re-aligning the stack.
- 
+
 Integrated Assembler
 ^^^^^^^^^^^^^^^^^^^^
 We have made a large number of improvements to the integrated assembler for
@@ -183,6 +213,20 @@ Changes to the X86 Target
 
 * TLS is enabled for Cygwin as emutls.
 
+* Smaller code for materializing 32-bit 1 and -1 constants at ``-Os``.
+
+* More efficient code for wide integer compares. (E.g. 64-bit compares
+  on 32-bit targets.)
+
+* Tail call support for ``thiscall``, ``stdcall`, ``vectorcall``, and
+  ``fastcall`` functions.
+
+Changes to the AVR Target
+-------------------------
+
+Slightly less than half of the AVR backend has been merged in at this point. It is still
+missing a number large parts which cause it to be unusable, but is well on the
+road to being completely merged and workable.
 
 Changes to the OCaml bindings
 -----------------------------