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First commit to CellSPU. More to follow

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44557 91177308-0d34-0410-b5e6-96231b3b80d8
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Scott Michel 2007-12-03 23:09:49 +00:00
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lib/Target/CellSPU/README.txt
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//===- 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.