[mips][Release Notes] Release notes for 5.0

Reviewers: atanasyan, nitesh.jain

Differential Revision: https://reviews.llvm.org/D37077

git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_50@311771 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/docs/ReleaseNotes.rst b/docs/ReleaseNotes.rst
index 734e6661e488b0633a5a3bfdf35425c80b0f8e46..563d6373172161fe810d65c38b4f062cf4b602b1 100644 (file)
--- a/docs/ReleaseNotes.rst
+++ b/docs/ReleaseNotes.rst
@@ -87,7 +87,41 @@ During this release the ARM target has:
 Changes to the MIPS Target
 --------------------------
 
- During this release ...
+* The microMIPS64R6 backend is deprecated and will be removed in the next
+  release.
+
+* The MIPS backend now directly supports vector types for arguments and return
+  values (previously this required ABI specific LLVM IR).
+
+* Added documentation for how the MIPS backend handles address lowering.
+
+* Added a GCC compatible option -m(no-)madd4 to control the generation of four
+  operand multiply addition/subtraction instructions.
+
+* Added basic support for the XRay instrumentation system.
+
+* Added support for more assembly aliases and macros.
+
+* Added support for the ``micromips`` and ``nomicromips`` function attributes
+  which control micromips code generation on a per function basis.
+
+* Added the ``long-calls`` feature for non-pic environments. This feature is
+  used where the callee is out of range of the caller using a standard call
+  sequence. It must be enabled specifically.
+
+* Added support for performing microMIPS code generation via function
+  attributes.
+
+* Added experimental support for the static relocation model for the N64 ABI.
+
+* Added partial support for the MT ASE.
+
+* Added basic support for code size reduction for microMIPS.
+
+* Fixed numerous bugs including: multi-precision arithmetic support, various
+  vectorization bugs, debug information for thread local variables, debug
+  sections lacking the correct flags, crashing when disassembling sections
+  whose size is not a multiple of two or four.
 
 
 Changes to the PowerPC Target