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llvm-project/polly/www/todo.html
James Y Knight 5d71fc5d7b Adjust documentation for git migration. 
This fixes most references to the paths:
 llvm.org/svn/
 llvm.org/git/
 llvm.org/viewvc/
 github.com/llvm-mirror/
 github.com/llvm-project/
 reviews.llvm.org/diffusion/

to instead point to https://github.com/llvm/llvm-project.

This is *not* a trivial substitution, because additionally, all the
checkout instructions had to be migrated to instruct users on how to
use the monorepo layout, setting LLVM_ENABLE_PROJECTS instead of
checking out various projects into various subdirectories.

I've attempted to not change any scripts here, only documentation. The
scripts will have to be addressed separately.

Additionally, I've deleted one document which appeared to be outdated
and unneeded:
  lldb/docs/building-with-debug-llvm.txt

Differential Revision: https://reviews.llvm.org/D57330

llvm-svn: 352514
2019-01-29 16:37:27 +00:00

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<title>Polly - Todo</title>
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<link type="text/css" rel="stylesheet" href="content.css">
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<body>
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<div id="content">
<h1> TODO </h1>
<h2> Overview</h2>
<ul>
<li><a href="#phase3">Phase 4</a></li>
<li><a href="#phase3">Phase 3 - Improve Robustness, Interoperability and
Optimizations (ongoing)</a></li>
<li><a href="#llvm">Polly as a LLVM Project (Finished February 2012)</a></li>
<li><a href="#phase2">Phase 2 - First Optimizations and Enhanced User Experience (Finished
February 2012)</a></li>
<li><a href="#phase1">Phase 1 - Get Something Working (Finished October 2010)</a>
</li>
</ul>
<h2> Individual Phases</h3>
<h3 id="phase4"> Phase 4</h3>
<table class="wikitable" cellpadding="2">
<p> </p>
<tbody>
<tr><th colspan="3" style="background: rgb(239, 239, 239);"> Infrastructure </th></tr>
<tr style="background: rgb(239, 239, 239)">
<th width="400px"> Task </th>
<th width="150px"> Status </th>
<th> Owner </th>
</tr>
<tr>
<th align="left"> Move to isl C++ bindings
</th><td align="center" class='open'> Open
</td><td>
</td>
</tr>
<th align="left"> &nbsp; &nbsp; - Add isl C++ bindings generator to isl
</th><td align="center" class='open'> Open
</td><td>
</td>
</tr>
<tr>
<th align="left"> Add isl as an external library to Polly SVN
</th><td align="center" class='done'> Done
</td><td>
</td>
</tr>
<tr>
<th align="left"> Compile-time: Speed up transformations
</th><td align="center">
</td><td>
</td>
</tr>
<th align="left"> &nbsp; &nbsp; - Optimize isl_int for small integers
</th><td align="center" class='done'> Done
</td><td>
</td>
</tr>
<tr>
<th align="left"> Compile-time: Minimize SCoP detection time
</th><td align="center" class='open'> Open
</td><td>
</td>
</tr>
<th align="left"> &nbsp; &nbsp; - Reconsider pass-ordering (move Polly later)
</th><td align="center" class='open'> Open
</td><td>
</td>
</tr>
<tr><td colspan='4'>&nbsp;</td></tr>
<tr><th colspan="3" style="background: rgb(239, 239, 239);"> Increase coverage
</th></tr>
<tr style="background: rgb(239, 239, 239)">
<th width="400px"> Task </th>
<th width="150px"> Status </th>
<th> Owner </th>
</tr>
<tr>
<th align="left">
Support for Modulos
</th><td align="center" class='done'> Done
</td><td> Johannes
</td></tr>
<tr>
<th align="left">
Boolean Combinations
</th><td align="center" class='done'> Done
</td><td> Johannes
</td></tr>
<tr>
<th align="left">
Unsigned Integers
</th><td align="center" class='done'> Done
</td><td> Johannes
</td></tr>
<tr>
<th align="left">
Pointer Comparisions
</th><td align="center" class='done'> Done
</td><td> Johannes
</td></tr>
<tr>
<th align="left">
Non-affine subregions
</th><td align="center" class='done'> Done
</td><td> Johannes
</td></tr>
<tr><td colspan='4'>&nbsp;</td></tr>
<tr><th colspan="3" style="background: rgb(239, 239, 239);"> Polly as an
analysis </th></tr>
<tr style="background: rgb(239, 239, 239)">
<th width="400px"> Task </th>
<th width="150px"> Status </th>
<th> Owner </th>
</tr>
<tr>
<th align="left">
Model scalars dependences directly in Polly
</th><td align="center" class='done'> Done
</td><td>
</td></tr>
<tr>
<th align="left">
Code generate scalar dependences
</th><td align="center" class='done'> Done
</td><td>
</td></tr>
<tr>
<th align="left">
Model PHI dependences directly in Polly
</th><td align="center" class='done'> Done
</td><td>
</td></tr>
<tr>
<th align="left">
Code generate PHI dependences
</th><td align="center" class='done'> Done
</td><td>
</td></tr>
<tr>
<th align="left"> <a href="http://llvm.org/bugs/show_bug.cgi?id=12398">Remove
the need for independent blocks</a>
</th><td class="done"> Done
</td><td>
</td></tr>
<tr>
<th align="left">
Remove polly-prepare pass
</th><td align="center" class='open'> Open
</td><td>
</td></tr>
<tr><td colspan='4'>&nbsp;</td></tr>
<tr><th colspan="3" style="background: rgb(239, 239, 239);"> Correctness in
cornercases </th></tr>
<tr style="background: rgb(239, 239, 239)">
<th width="400px"> Task </th>
<th width="150px"> Status </th>
<th> Owner </th>
</tr>
<tr>
<th align="left"> <a href="http://llvm.org/bugs/show_bug.cgi?id=10381">Derive
optimal types (instead of always using i64)</a>
</th><td class="open"> Open
</td><td>
</td></tr>
<tr>
<th align="left"> <a href="http://llvm.org/bugs/show_bug.cgi?id=12397">Model
integer wrapping</a>
</th><td align="center" class='done'> Done
</td><td> Johannes
</td></tr
<tr><td colspan='4'>&nbsp;</td></tr>
<tr><th colspan="3" style="background: rgb(239, 239, 239);"> Optimize Julia
code with Polly
analysis </th></tr>
<tr style="background: rgb(239, 239, 239)">
<th width="400px"> Task </th>
<th width="150px"> Status </th>
<th> Owner </th>
</tr>
<th align="left">
Integrate Polly into Julia
</th><td align="center" class='open'> Open
</td><td>
</td></tr>
<tr>
<th align="left">
Eliminate run-time bounds checks
</th><td align="center" class='open'> Open
</td><td>
</td></tr>
<tr>
<th align="left"> &nbsp; &nbsp; - Reconsider unreachables in post-dominance tree
</th><td align="center" class='open'> Open
</td><td>
</td></tr>
<th align="left"> &nbsp; &nbsp; - Actually eliminate statements
</th><td align="center" class='done'> Done
</td><td>
</td></tr>
<tr><td colspan='4'>&nbsp;</td></tr>
<tr><th colspan="3" style="background: rgb(239, 239, 239);"> Improved
Optimizations in Polly
</th></tr>
<tr style="background: rgb(239, 239, 239)">
<th width="400px"> Task </th>
<th width="150px"> Status </th>
<th> Owner </th>
</tr>
<th align="left">
Multi-level tiling
</th><td align="center" class='open'> Open
</td><td>
</td></tr>
<tr>
<th align="left">
Register Tiling
</th><td align="center" class='open'> Open
</td><td>
</td></tr>
<tr>
<th align="left">
Full/partial tile separation for vectorization
</th><td align="center" class='done'> Done
</td><td>
</td></tr>
<th align="left">
Loop interchange after vectorization to maximize stride-one accesses
</th><td align="center" class='open'> Open
</td><td>
</td></tr>
</table>
<h3 id="phase3"> Phase 3 - Improve Robustness, Interoperability and
Optimizations (ongoing)</h3>
<table class="wikitable" cellpadding="2">
<p> </p>
<tbody>
<tr><th colspan="3" style="background: rgb(239, 239, 239);"> Frontend </th></tr>
<tr style="background: rgb(239, 239, 239)">
<th width="400px"> Task </th>
<th width="150px"> Status </th>
<th> Owner </th>
</tr>
<tr>
<th align="left"> Non-affine access functions
</th><td align="center" class='done'> Done, needs testing
</td><td>Marcello
</td>
</tr>
<tr>
<tr>
<th align="left"> <a
href="http://llvm.org/bugs/show_bug.cgi?id=12403">Variable-size
multi-dimensional arrays</a>
</th><td align="center" class='done'> Done
</td><td>Sebastian
</td></tr>
<tr>
<th align="left"> <a
href="http://llvm.org/bugs/show_bug.cgi?id=12407">Derive information for
the SCoP context
</a>
</th>
<td align="center" class='nice'> Open
</td><td>
</td></tr>
<tr>
<th align="left"> <a href="http://llvm.org/bugs/show_bug.cgi?id=12402">Finer
grained statements</a>
</th><td align="center" class='nice'> Open
</td><td>
</td></tr>
<tr>
<th align="left"> Detect reductions
</th><td align="center" class='done'>Done
</td><td>Johannes
</td></tr>
<tr>
<th align="left"> Generate code for reductions
</th><td align="center" class='niceinprogress'>in progress
</td><td>Johannes
</td></tr>
<tr>
<th align="left"> Assume static sized arrays are only accessed in-bounds
</th><td align="center" class='done'>Done
</td><td>Tobias
</td></tr>
<tr><td colspan='4'>&nbsp;</td></tr>
<tr><th colspan="3" style="background: rgb(239, 239, 239);"> Optimizer </th></tr>
<tr style="background: rgb(239, 239, 239)">
<th width="400px"> Task </th>
<th width="150px"> Status </th>
<th> Owner </th>
</tr>
<tr>
<th align="left"> <a href="http://llvm.org/bugs/show_bug.cgi?id=12405">Polyhedral
dead code elimination</a>
</th><td class="done">Done
</td><td>
</td></tr>
<tr><td colspan='4'>&nbsp;</td></tr>
<tr><th colspan="3" style="background: rgb(239, 239, 239);"> Back End</th></tr>
<tr style="background: rgb(239, 239, 239)">
<th width="400px"> Task </th>
<th width="150px"> Status </th>
<th> Owner </th>
</tr>
<tr>
<th align="left"> OpenMP code generation support in isl backend
(requirement to drop CLooG)
</th><td class="done"> Done
</td><td> Tobias
</td></tr>
<tr>
<th align="left"> Run-time alias checks
</th><td class="done"> Done
</td><td>Johannes
<tr>
<th align="left"> <a
href="http://polly.llvm.org/documentation/gpgpucodegen.html">GPGPU Code
Generation</a>
</th><td class="niceinprogress">in progress
</td><td>
Yabin
</td></tr>
<tr>
<th align="left"> <a
href="http://polly.llvm.org/documentation/memaccess.html">Allow optimizers to
change memory access functions</a>
</th><td class="done"> Done
</td><td>Johannes
</td></tr>
<tr>
<th align="left"> <a href="http://llvm.org/bugs/show_bug.cgi?id=12406">Make code
generation independent of the clast</a>
</th><td class="done">Done
</td><td>
</td></tr>
<tr>
<tr><td colspan='4'>&nbsp;</td></tr>
<tr><th colspan="3" style="background: rgb(239, 239, 239);"> General</th></tr>
<tr style="background: rgb(239, 239, 239)">
<th width="400px"> Task </th>
<th width="150px"> Status </th>
<th> Owner </th>
</tr>
<tr>
<th align="left"> Teach bugpoint to extract regions
</th><td class="nice"> Open
</td><td>
</td></tr>
<tr>
<th align="left"> Add <a
href="http://www.cse.ohio-state.edu/~pouchet/software/polybench/">Polybench
3.2</a> to the LLVM test suite
</th><td class="done"> Done
</td><td>
</td></tr>
<tr>
<th align="left"> Build against an installed LLVM
</th><td class="done"> Done<br />
</td><td>
</td></tr>
<tr>
<th align="left"> Setup buildbot regression testers using LNT
</th><td class="done"> Done
</td><td> Tobias
</td></tr>
</tbody></table>
<h3 id="llvm"> Polly as a LLVM Project (Finished February 2012)</h3>
<table class="wikitable" cellpadding="2">
<tbody>
<tr style="background: rgb(239, 239, 239);">
<th>Task
</th><th> Status
</th><th>Owner
</th></tr>
<tr>
<th align="left"> Move to LLVM SVN
</th><td class="done" align="center">
<a
href="http://llvm.org/svn/llvm-project/polly"
>http://llvm.org/svn/llvm-project/polly</a>
</td><td> Tobias
</td></tr>
<tr>
<th align="left"> Commit mails
</th><td class="done" align="center">
llvm-commits@lists.llvm.org
</td><td> Tobias
</td></tr>
<tr>
<th align="left"> LLVM Bugzilla category
</th><td class="done" align="center">
<a href="http://llvm.org/bugs/enter_bug.cgi?product=Projects">LLVM Bugzilla</a>
<br />
(Product is 'Projects', Component is 'Polly')
</td><td> Tobias
<tr>
<th align="left"> Website
</th><td class="done" align="center">
<a href="http://polly.llvm.org">http://polly.llvm.org</a>
</td><td> Tobias
</td></tr>
<tr>
<th align="left">Buildbot that runs 'make polly-test'
</th><td class="done" align="center">
<a href="http://lab.llvm.org:8011/console">Buildbot</a>
</td>
<td> Tobias, Andreas
</td></tr>
</th><td>
</td></tr>
</tbody></table>
<h3 id="phase2"> Phase 2 - First Optimizations and Enhanced User Experience (Finished
February 2012)</h3>
<p>
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.
</p>
<table class="wikitable" cellpadding="2">
<tbody>
<tr><th colspan="3" style="background: rgb(239, 239, 239);"> Frontend </th></tr>
<tr style="background: rgb(239, 239, 239)">
<th width="400px"> Task </th>
<th width="150px"> Status </th>
<th> Owner </th>
</tr>
<tr>
<tr>
<th align="left"> Allow parameters in access functions
</th><td align="center" class='done'> Done
</td><td> Tobias
</td></tr>
<tr>
<th align="left"> Improved Scalar Evolution parsing
</th><td align="center" class='done'> Done
</td><td> Tobias
</td></tr>
<tr>
<th align="left"> (Graphical) user feedback on Scop Detection
</th><td align="center" class='done'> Done
</td><td> Tobias
</td></tr>
<tr><td colspan='4'>&nbsp;</td></tr>
<tr><th colspan="3" style="background: rgb(239, 239, 239);"> Optimizer </th></tr>
<tr style="background: rgb(239, 239, 239)">
<th width="400px"> Task </th>
<th width="150px"> Status </th>
<th> Owner </th>
</tr>
<tr>
<th align="left"> Dependency Analysis
</th><td class="done" align="center"> Done
</td><td> Tobias
</td></tr>
<tr>
<tr>
<th align="left"> Optimizer - Connect Pluto (through PoCC)
</th><td class="done" align="center"> Done
</td><td> Tobias
</td></tr>
<tr>
<tr>
<th align="left"> Optimizer - Add ISL internal Pluto like optimizer
</th><td class="done" align="center"> Done
</td><td> Tobias
</td></tr>
<tr>
<th align="left"> Import/Export - SCoPLib 0.2 (needed for PoCC)
</th><td class="done" align="center">Done
</td><td> Tobias
</td></tr>
<tr><td colspan='4'>&nbsp;</td></tr>
<tr><th colspan="3" style="background: rgb(239, 239, 239);"> Back End</th></tr>
<tr style="background: rgb(239, 239, 239)">
<th width="400px"> Task </th>
<th width="150px"> Status </th>
<th> Owner </th>
</tr>
<tr>
<th align="left">SIMD code generation for trivially vectorizable loops
</th><td class="done">Done
</td><td>Tobias
</td></tr>
<tr>
<th align="left">OpenMP code generation
</th><td class="done">Done
</td><td> Raghesh, Tobias
</td></tr>
<tr>
<tr><td colspan='4'>&nbsp;</td></tr>
<tr><th colspan="3" style="background: rgb(239, 239, 239);"> General</th></tr>
<tr style="background: rgb(239, 239, 239)">
<th width="400px"> Task </th>
<th width="150px"> Status </th>
<th> Owner </th>
</tr>
<tr>
<th align="left"> clang integration
</th><td class="done" align="center"> done
</td><td> Tobias
</td></tr>
<tr>
<th align="left"> Commit RegionPass patch upstream
</th><td class="done" align="center"> done
</td><td> Tobias
</td></tr>
<tr>
</tbody></table>
<h3 id="phase1">Phase 1 - Get Something Working (Finished October 2010)</h3>
<p>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.
</p>
<table class="wikitable" cellpadding="2">
<tbody>
<tr><th colspan="3" style="background: rgb(239, 239, 239);"> Front End</th></tr>
<tr style="background: rgb(239, 239, 239)">
<th width="400px"> Task </th>
<th width="150px"> Status </th>
<th> Owner </th>
</tr>
<th align="left"> Region detection
</td><td class="done"> Done
</td><td>Ether
</td></tr>
<tr>
<th align="left"> Access Functions
</td><td class="done"> Done
</td><td>John, Ether
</td></tr>
<tr>
<th align="left"> Alias sets
</td><td class="done"> Done
</td><td>Ether
</td></tr>
<tr>
<th align="left"> Scalar evolution to affine expression
</td><td class="done"> Done
</td><td>
Ether
</td></tr>
<tr>
<th align="left"> SCoP extraction
</td><td class="done"> Done
</td><td>Tobias, Ether
</td></tr>
<tr>
<th align="left"> SCoPs to polyhedral model
</td><td class="done"> Done
</td><td>Tobias, Ether
</td></tr>
<tr><td colspan='4'>&nbsp;</td></tr>
<tr><th colspan="3" style="background: rgb(239, 239, 239);"> Optimizer </th></tr>
<tr style="background: rgb(239, 239, 239)">
<th width="400px"> Task </th>
<th width="150px"> Status </th>
<th> Owner </th>
</tr>
<tr>
<th align="left"> Define polyhedral description
</td><td class="done"> Done
</td><td>Tobias
</td></tr>
<tr><td colspan='4'>&nbsp;</td></tr>
<tr><th colspan="3" style="background: rgb(239, 239, 239);"> Back End</th></tr>
<tr style="background: rgb(239, 239, 239)">
<th width="400px"> Task </th>
<th width="150px"> Status </th>
<th> Owner </th>
</tr>
<tr>
<th align="left"> Create LLVM-IR using CLooG
</td><td class="done"> Done
</td><td> Tobias
</td></tr>
<tr><td colspan='4'>&nbsp;</td></tr>
<tr><th colspan="3" style="background: rgb(239, 239, 239);"> General</th></tr>
<tr style="background: rgb(239, 239, 239)">
<th width="400px"> Task </th>
<th width="150px"> Status </th>
<th> Owner </th>
</tr>
<tr>
<th align="left"> Setup git repositories
</td><td class="done"> Done
</td><td> Tobias
</td></tr>
<tr>
<th align="left"> Add CLooG/isl to build system
</td><td class="done"> Done
</td><td> Tobias
</td></tr>
</tbody></table>
</div>
</div>
</body>
</html>
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