First commit to CellSPU. More to follow

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44557 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/CellSPU/README.txt

@@ -1,10 +1,41 @@
 //===- README.txt - Notes for improving CellSPU-specific code gen ---------===//
 
+This code was contributed by a team from the Computer Systems Research
+Department in The Aerospace Corporation:
+
+- Scott Michel (head bottle washer and much of the non-floating point
+  instructions)
+- Mark Thomas (floating point instructions)
+- Michael AuYeung (intrinsics)
+- Chandler Carruth (LLVM expertise)
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NONINFRINGEMENT, OR
+OTHERWISE.  IN NO EVENT SHALL THE AEROSPACE CORPORATION BE LIABLE FOR DAMAGES
+OF ANY KIND OR NATURE WHETHER BASED IN CONTRACT, TORT, OR OTHERWISE ARISING
+OUT OF OR IN CONNECTION WITH THE USE OF THE SOFTWARE INCLUDING, WITHOUT
+LIMITATION, DAMAGES RESULTING FROM LOST OR CONTAMINATED DATA, LOST PROFITS OR
+REVENUE, COMPUTER MALFUNCTION, OR FOR ANY SPECIAL, INCIDENTAL, CONSEQUENTIAL,
+OR PUNITIVE  DAMAGES, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES OR
+SUCH DAMAGES ARE FORESEEABLE. 
+
+---------------------------------------------------------------------------
+--WARNING--: The CellSPU work is work-in-progress and "alpha" quality code.
+---------------------------------------------------------------------------
+
 TODO:
-* Check in the actual code.
+* Finish branch instructions, branch prediction
+
+  These instructions were started, but only insofar as to get llvm-gcc-4.2's
+  crtbegin.ll working (which doesn't.)
+
+* Double floating point support
+
+  This was started. "What's missing?" to be filled in.
+
+* Intrinsics
+
+  Lots of progress. "What's missing/incomplete?" to be filled in.
 
 ===-------------------------------------------------------------------------===
-
-Note: The CellSPU work is work-in-progress and "alpha" quality code. No code
-has been officially checked into the llvm repo, but this will happen Real Soon,
-Real Soon Now.