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<base href="https://bugs.llvm.org/">
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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - unbounded optimum (in isl/isl_tab_pip.c:706)"
href="https://bugs.llvm.org/show_bug.cgi?id=34813">34813</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>unbounded optimum (in isl/isl_tab_pip.c:706)
</td>
</tr>
<tr>
<th>Product</th>
<td>Polly
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>Optimizer
</td>
</tr>
<tr>
<th>Assignee</th>
<td>polly-dev@googlegroups.com
</td>
</tr>
<tr>
<th>Reporter</th>
<td>alex.susu@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=19218" name="attach_19218" title="bugpoint "reduced" test and build script and full standard output and error">attachment 19218</a> <a href="attachment.cgi?id=19218&action=edit" title="bugpoint "reduced" test and build script and full standard output and error">[details]</a></span>
bugpoint "reduced" test and build script and full standard output and error
Hello.
Please find attached a bugpoint "reduced" test (and build script and full
output) that crashes Polly with the following stack trace:
#7 0x00007fa0dedc1cb7 isl_handle_error
/home/alexsusu/LLVM/llvmSep06_2017/llvm/tools/polly/lib/External/isl/isl_ctx.c:101:0
#8 0x00007fa0dee8c763 sol_add
/home/alexsusu/LLVM/llvmSep06_2017/llvm/tools/polly/lib/External/isl/isl_tab_pip.c:705:0
#9 0x00007fa0dee94fc8 find_solutions
/home/alexsusu/LLVM/llvmSep06_2017/llvm/tools/polly/lib/External/isl/isl_tab_pip.c:4114:0
...
#33 0x00007fa0e936ec9a (anonymous
namespace)::ForwardOpTreeImpl::singleLocation(isl::noexceptions::union_map,
isl::noexceptions::set)
/home/alexsusu/LLVM/llvmSep06_2017/llvm/tools/polly/lib/Transform/ForwardOpTree.cpp:245:0
#34 0x00007fa0e936fb5c (anonymous
namespace)::ForwardOpTreeImpl::forwardKnownLoad(polly::ScopStmt*,
llvm::Instruction*, polly::ScopStmt*, llvm::Loop*, isl::noexceptions::map,
polly::ScopStmt*, llvm::Loop*, isl::noexceptions::map, bool)
/home/alexsusu/LLVM/llvmSep06_2017/llvm/tools/polly/lib/Transform/ForwardOpTree.cpp:460:0
#35 0x00007fa0e9370838 (anonymous
namespace)::ForwardOpTreeImpl::forwardTree(polly::ScopStmt*, llvm::Value*,
polly::ScopStmt*, llvm::Loop*, isl::noexceptions::map, bool)
/home/alexsusu/LLVM/llvmSep06_2017/llvm/tools/polly/lib/Transform/ForwardOpTree.cpp:719:0
#36 0x00007fa0e9370240 (anonymous
namespace)::ForwardOpTreeImpl::forwardSpeculatable(polly::ScopStmt*,
llvm::Instruction*, polly::ScopStmt*, llvm::Loop*, isl::noexceptions::map,
bool)
/home/alexsusu/LLVM/llvmSep06_2017/llvm/tools/polly/lib/Transform/ForwardOpTree.cpp:577:0
...
...
#44 0x00007fa0e93711c3 (anonymous
namespace)::ForwardOpTree::runOnScop(polly::Scop&)
/home/alexsusu/LLVM/llvmSep06_2017/llvm/tools/polly/lib/Transform/ForwardOpTree.cpp:860:0
#45 0x00007fa0e928d475 polly::ScopPass::runOnRegion(llvm::Region*,
llvm::RGPassManager&)
/home/alexsusu/LLVM/llvmSep06_2017/llvm/tools/polly/lib/Analysis/ScopPass.cpp:34:0
#46 0x00007fa0e87aded7
llvm::RGPassManager::runOnFunction(llvm::Function&)
/home/alexsusu/LLVM/llvmSep06_2017/llvm/lib/Analysis/RegionPass.cpp:98:0
#47 0x00007fa0e7b67f42
llvm::FPPassManager::runOnFunction(llvm::Function&)
/home/alexsusu/LLVM/llvmSep06_2017/llvm/lib/IR/LegacyPassManager.cpp:1514:0
#48 0x00007fa0e7b680d5 llvm::FPPassManager::runOnModule(llvm::Module&)
/home/alexsusu/LLVM/llvmSep06_2017/llvm/lib/IR/LegacyPassManager.cpp:1535:0
#49 0x00007fa0e7b68470 (anonymous
namespace)::MPPassManager::runOnModule(llvm::Module&)
/home/alexsusu/LLVM/llvmSep06_2017/llvm/lib/IR/LegacyPassManager.cpp:1591:0
#50 0x00007fa0e7b68bc7 llvm::legacy::PassManagerImpl::run(llvm::Module&)
/home/alexsusu/LLVM/llvmSep06_2017/llvm/lib/IR/LegacyPassManager.cpp:1694:0
#51 0x00007fa0e7b68e07 llvm::legacy::PassManager::run(llvm::Module&)
/home/alexsusu/LLVM/llvmSep06_2017/llvm/lib/IR/LegacyPassManager.cpp:1726:0
#52 0x00000000004b1d7c main
/home/alexsusu/LLVM/llvmSep06_2017/llvm/tools/opt/opt.cpp:760:0
I see another bug related to unbounded optimum was reported at
<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [polly] isl_tab_pip.c:508: unbounded optimum"
href="show_bug.cgi?id=30956">https://bugs.llvm.org/show_bug.cgi?id=30956</a> .
Best regards,
Alex</pre>
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