Author: rovka
Date: Fri Jan 20 05:34:32 2017
New Revision: 292602
URL: http://llvm.org/viewvc/llvm-project?rev=292602&view=rev
Log:
Add some release notes for ARM and AArch64
Modified:
llvm/branches/release_40/docs/ReleaseNotes.rst
Modified: llvm/branches/release_40/docs/ReleaseNotes.rst
URL:
http://llvm.org/viewvc/llvm-project/llvm/branches/release_40/docs/ReleaseNotes.rst?rev=292602&r1=292601&r2=292602&view=diff
==============================================================================
--- llvm/branches/release_40/docs/ReleaseNotes.rst (original)
+++ llvm/branches/release_40/docs/ReleaseNotes.rst Fri Jan 20 05:34:32 2017
@@ -7,8 +7,7 @@ LLVM 4.0.0 Release Notes
.. warning::
These are in-progress notes for the upcoming LLVM 4.0.0 release. You may
- prefer the `LLVM 3.9 Release Notes <http://llvm.org/releases/3.9.0/docs
- /ReleaseNotes.html>`_.
+ prefer the `LLVM 3.9 Release Notes <http://llvm.org/releases/3.9.0/docs
/ReleaseNotes.html>`_.
Introduction
@@ -69,19 +68,44 @@ Non-comprehensive list of changes in thi
Improvements to ThinLTO (-flto=thin)
------------------------------------
- * Integration with profile data (PGO). When available, profile data
- enables more accurate function importing decisions, as well as
+ * Integration with profile data (PGO). When available, profile data
+ enables more accurate function importing decisions, as well as
cross-module indirect call promotion.
- * Significant build-time and binary-size improvements when compiling with
+ * Significant build-time and binary-size improvements when compiling with
debug info (-g).
Changes to the LLVM IR
----------------------
-Changes to the ARM Backend
+Changes to the ARM Targets
--------------------------
- During this release ...
+**During this release the AArch64 target has:**
+
+* Gained support for ILP32 relocations.
+* Gained support for XRay.
+* Made even more progress on GlobalISel. There is still some work left before
+ it is production-ready though.
+* Refined the support for Qualcomm's Falkor and Samsung's Exynos CPUs.
+* Learned a few new tricks for lowering multiplications by constants, folding
+ spilled/refilled copies etc.
+
+**During this release the ARM target has:**
+
+* Gained support for ROPI (read-only position independence) and RWPI
+ (read-write position independence), which can be used to remove the need for
+ a dynamic linker.
+* Gained support for execute-only code, which is placed in pages without read
+ permissions.
+* Gained a machine scheduler for Cortex-R52.
+* Gained support for XRay.
+* Gained Thumb1 implementations for several compiler-rt builtins. It also
+ has some support for building the builtins for HF targets.
+* Started using the generic bitreverse intrinsic instead of rbit.
+* Gained very basic support for GlobalISel.
+
+A lot of work has also been done in LLD for ARM, which now supports more
+relocations and TLS.
Changes to the MIPS Target
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