TODO
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 | |
Model integer wrapping | Open | ||
Variable-size multi-dimensional arrays | Done | Sebastian | |
Derive information for the SCoP context | Open | ||
Finer grained statements | Open | ||
Detect reductions | Done | Johannes | |
Generate code for reductions | in progress | Johannes | |
Assume static sized arrays are only accessed in-bounds | Done | Tobias | |
Optimizer | |||
Task | Status | Owner | |
Polyhedral dead code elimination | Done | OpenSCoP Import/Export | Open |
Back End | |||
Task | Status | Owner | |
OpenMP code generation support in isl backend (requirement to drop CLooG) | Done | Tobias | |
Support for scalars/PHIs directly in the code generation (requirement to remove polly independent) | in progress | Tobias/Johannes | |
Remove the need for independent blocks | Open | ||
Run-time alias checks | Done | Johannes | |
Derive optimal types (instead of always using i64) | in progress | Tobias | |
GPGPU Code Generation | in progress | Yabin | |
Allow optimizers to change memory access functions | Done | Johannes | |
Make code generation independent of the clast | Done | ||
General | |||
Task | Status | Owner | |
Teach bugpoint to extract regions | Open | ||
Add Polybench 3.2 to the LLVM test suite | Done | ||
Build against an installed LLVM | Done | ||
Setup buildbot regression testers using LNT | Done | 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 | |
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 |