Added release notes for the Mips target.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_35@223231 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/docs/ReleaseNotes.rst b/docs/ReleaseNotes.rst
index 7de4f17ded5707b8ede72a1d21930625535bc548..ad62e63c727b8f3045dbe3b3c74397498e20476f 100644 (file)
--- a/docs/ReleaseNotes.rst
+++ b/docs/ReleaseNotes.rst
@@ -24,6 +24,40 @@ them.
 Non-comprehensive list of changes in this release
 =================================================
 
+Changes to the MIPS Target
+--------------------------
+
+* A large number of bugs have been fixed for big-endian Mips targets using the
+  N32 and N64 ABI's. Please note that some of these bugs will still affect
+  LLVM-IR generated by LLVM 3.5 since correct code generation depends on
+  appropriate usage of the ``inreg``, ``signext``, and ``zeroext`` attributes
+  on all function arguments and returns.
+
+* The registers used to return a structure containing a single 128-bit floating
+  point member on the N32/N64 ABI's have been changed from those specified by
+  the ABI documentation to match those used by GCC. The documentation specifies
+  that ``$f0`` and ``$f2`` should be used but GCC has used ``$f0`` and ``$f1``
+  for many years.
+
+* Returning a zero-byte struct no longer causes incorrect code generation when
+  using the O32 ABI.
+
+* The exception personality has been changed for 64-bit Mips targets to
+  eliminate warnings about relocations in a read-only section.
+
+* Incorrect usage of odd-numbered single-precision floating point registers
+  has been fixed when the fastcc calling convention is used with 64-bit FPU's
+  and -mno-odd-spreg.
+
+* For inline assembly, the 'z' print-modifier print modifier can now be used on
+  non-immediate values.
+
+* Attempting to disassemble l[wd]c[23], s[wd]c[23], cache, and pref no longer
+  triggers an assertion.
+
+Non-comprehensive list of changes in 3.5
+========================================
+
 * All backends have been changed to use the MC asm printer and support for the
   non MC one has been removed.