## Overview

- Phase 3 - Improve Robustness, Interoperability and Optimizations (ongoing)
- Polly as a LLVM Project (Finished February 2012)
- Phase 2 - First Optimizations and Enhanced User Experience (Finished February 2012)
- Phase 1 - Get Something Working (Finished October 2010)

## Individual Phases

### Phase 3 - Improve Robustness, Interoperability and Optimizations (ongoing)

Frontend
Task | Status | Owner
--- | --- | ---
Non-affine access functions | Done, needs testing | Marcello
| Finer grained statements | Open |
Model integer wrapping | Open |
Variable-size multi-dimensional arrays | Open |
| Derive information for the SCoP context | Open |
Optimizer
Task | Status | Owner
Polyhedral dead code elimination | Open |
| OpenSCoP Import/Export - Update to current version | Open |
Back End
Task | Status | Owner
| Allow optimizers to change memory access functions | 10% done |  |
Derive optimal types (instead of always using i64) | Requires code generator support |
Remove the need for independent blocks | Open |
Make code generation independent of the clast | Open |
Integrate with the LLVM BBVectorizer | Open |
GPGPU Code Generation | In Design |
General
Task | Status | Owner
Add FORTRAN Support to the LLVM test suite | Open |
| Add Polybench 3.2 to the LLVM test suite | Open |
Build against an installed LLVM | Partial (cmake only, no tests) |
Setup buildbot regression testers using LNT | In progress | Tobias

### Polly as a LLVM Project (Finished February 2012)

Task | Status | Owner
--- | --- | ---
Move to LLVM SVN | http://llvm.org/svn/llvm-project/polly | Tobias
Git mirror | git://llvm.org/git/polly.git | Tobias
Commit mails | llvm-commits@cs.uiuc.edu | Tobias
LLVM Bugzilla category | LLVM Bugzilla (Product is 'Projects', Component is 'Polly') | Tobias
Website | http://polly.llvm.org | Tobias
Buildbot that runs 'make polly-test' | Buildbot | Tobias, Andreas

### Phase 2 - First Optimizations and Enhanced User Experience (Finished February 2012)

First optimizations to show the usefullness of Polly and enhance the user experience. We also try to increase the amount of code we can optimize.

Frontend
Task | Status | Owner
--- | --- | ---
Allow parameters in access functions | Done | Tobias
Improved Scalar Evolution parsing | Done | Tobias
(Graphical) user feedback on Scop Detection | Done | Tobias
Optimizer
Task | Status | Owner
Dependency Analysis | Done | Tobias
Optimizer - Connect Pluto (through PoCC) | Done | Tobias
Optimizer - Add ISL internal Pluto like optimizer | Done | Tobias
Import/Export - SCoPLib 0.2 (needed for PoCC) | Done | Tobias
Back End
Task | Status | Owner
SIMD code generation for trivially vectorizable loops | Done | Tobias
OpenMP code generation | Done | Raghesh, Tobias
General
Task | Status | Owner
clang integration | done | Tobias
Commit RegionPass patch upstream | done | Tobias

### Phase 1 - Get Something Working (Finished October 2010)

Create a minimal version of Polly that can transform an LLVM-IR program to the polyhedral model and back to LLVM-IR. No transformations are performed.

Front End
Task | Status | Owner
--- | --- | ---
| Region detection | Done | Ether
Access Functions | Done | John, Ether
Alias sets | Done | Ether
Scalar evolution to affine expression | Done | Ether
SCoP extraction | Done | Tobias, Ether
SCoPs to polyhedral model | Done | Tobias, Ether
Optimizer
Task | Status | Owner
Define polyhedral description | Done | Tobias
Import/Export using current openscop version | Done | Tobias
Back End
Task | Status | Owner
Create LLVM-IR using CLooG | Done | Tobias
General
Task | Status | Owner
Setup git repositories | Done | Tobias
Add CLooG/isl to build system | Done | Tobias