<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/131776>131776</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [MLIR] `pipelineForLoop` crashed when using `test-scf-pipelining` pass: Assertion `Denominator && "Division by zero"' failed.
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            mlir
      </td>
    </tr>

    <tr>
      <th>Assignees</th>
      <td>
      </td>
    </tr>

    <tr>
      <th>Reporter</th>
      <td>
          sweead
      </td>
    </tr>
</table>

<pre>
    test commit: [bd1be8a](https://github.com/llvm/llvm-project/commit/bd1be8a242384d98ef2087f4571b464e01501f5a)


step to reproduce:
```
mlir-opt test.mlir --test-scf-pipelining=no-epilogue-peeling
```
test case:
```
module {
 func.func @main() {
    %c1 = arith.constant 1 : index
    %0 = arith.subi %c1, %c1 : index
    scf.for %arg1 = %c1 to %c1 step %0 {
      %token = async.execute {
        async.yield
      }
    }
    return
 }
}
```

Crash backtrace:
```
mlir-opt: /home/workdir/llvm-project/llvm/include/llvm/Support/MathExtras.h:428: T llvm::divideCeilSigned(U, V) [U = long, V = long, T = long]: Assertion `Denominator && "Division by zero"' failed.
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.
Stack dump:
0.      Program arguments: mlir-opt test.mlir --test-scf-pipelining=no-epilogue-peeling
 #0 0x000055e39d5a81c8 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/home/workdir/llvm-project/build/bin/mlir-opt+0x12d51c8)
 #1 0x000055e39d5a5cee llvm::sys::RunSignalHandlers() (/home/workdir/llvm-project/build/bin/mlir-opt+0x12d2cee)
 #2 0x000055e39d5a8bd1 SignalHandler(int, siginfo_t*, void*) Signals.cpp:0:0
 #3 0x00007f5727673520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
 #4 0x00007f57276c79fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)
 #5 0x00007f5727673476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)
 #6 0x00007f57276597f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)
 #7 0x00007f572765971b (/lib/x86_64-linux-gnu/libc.so.6+0x2871b)
 #8 0x00007f572766ae96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)
 #9 0x000055e39f615991 mlir::scf::pipelineForLoop(mlir::RewriterBase&, mlir::scf::ForOp, mlir::scf::PipeliningOption const&, bool*) (/home/workdir/llvm-project/build/bin/mlir-opt+0x3342991)
#10 0x000055e39f5dc032 mlir::scf::ForLoopPipeliningPattern::matchAndRewrite(mlir::scf::ForOp, mlir::PatternRewriter&) const (/home/workdir/llvm-project/build/bin/mlir-opt+0x3309032)
#11 0x000055e3a2e5cfe2 void llvm::function_ref<void ()>::callback_fn<mlir::PatternApplicator::matchAndRewrite(mlir::Operation*, mlir::PatternRewriter&, llvm::function_ref<bool (mlir::Pattern const&)>, llvm::function_ref<void (mlir::Pattern const&)>, llvm::function_ref<llvm::LogicalResult (mlir::Pattern const&)>)::$_0>(long) PatternApplicator.cpp:0:0
#12 0x000055e3a2e59cdf mlir::PatternApplicator::matchAndRewrite(mlir::Operation*, mlir::PatternRewriter&, llvm::function_ref<bool (mlir::Pattern const&)>, llvm::function_ref<void (mlir::Pattern const&)>, llvm::function_ref<llvm::LogicalResult (mlir::Pattern const&)>) (/home/workdir/llvm-project/build/bin/mlir-opt+0x6b86cdf)
#13 0x000055e3a072aa1a (anonymous namespace)::GreedyPatternRewriteDriver::processWorklist() GreedyPatternRewriteDriver.cpp:0:0
#14 0x000055e3a0727263 mlir::applyPatternsGreedily(mlir::Region&, mlir::FrozenRewritePatternSet const&, mlir::GreedyRewriteConfig, bool*) (/home/workdir/llvm-project/build/bin/mlir-opt+0x4454263)
#15 0x000055e3a089d1e5 (anonymous namespace)::TestSCFPipeliningPass::runOnOperation() TestSCFUtils.cpp:0:0
#16 0x000055e3a06aca43 mlir::detail::OpToOpPassAdaptor::run(mlir::Pass*, mlir::Operation*, mlir::AnalysisManager, bool, unsigned int) (/home/workdir/llvm-project/build/bin/mlir-opt+0x43d9a43)
#17 0x000055e3a06ad2e2 mlir::detail::OpToOpPassAdaptor::runPipeline(mlir::OpPassManager&, mlir::Operation*, mlir::AnalysisManager, bool, unsigned int, mlir::PassInstrumentor*, mlir::PassInstrumentation::PipelineParentInfo const*) (/home/workdir/llvm-project/build/bin/mlir-opt+0x43da2e2)
#18 0x000055e3a06b372e auto void mlir::parallelForEach<__gnu_cxx::__normal_iterator<mlir::detail::OpToOpPassAdaptor::runOnOperationAsyncImpl(bool)::OpPMInfo*, std::vector<mlir::detail::OpToOpPassAdaptor::runOnOperationAsyncImpl(bool)::OpPMInfo, std::allocator<mlir::detail::OpToOpPassAdaptor::runOnOperationAsyncImpl(bool)::OpPMInfo>>>, mlir::detail::OpToOpPassAdaptor::runOnOperationAsyncImpl(bool)::$_0>(mlir::MLIRContext*, __gnu_cxx::__normal_iterator<mlir::detail::OpToOpPassAdaptor::runOnOperationAsyncImpl(bool)::OpPMInfo*, std::vector<mlir::detail::OpToOpPassAdaptor::runOnOperationAsyncImpl(bool)::OpPMInfo, std::allocator<mlir::detail::OpToOpPassAdaptor::runOnOperationAsyncImpl(bool)::OpPMInfo>>>, __gnu_cxx::__normal_iterator<mlir::detail::OpToOpPassAdaptor::runOnOperationAsyncImpl(bool)::OpPMInfo*, std::vector<mlir::detail::OpToOpPassAdaptor::runOnOperationAsyncImpl(bool)::OpPMInfo, std::allocator<mlir::detail::OpToOpPassAdaptor::runOnOperationAsyncImpl(bool)::OpPMInfo>>>, mlir::detail::OpToOpPassAdaptor::runOnOperationAsyncImpl(bool)::$_0&&)::'lambda'(__gnu_cxx::__normal_iterator<mlir::detail::OpToOpPassAdaptor::runOnOperationAsyncImpl(bool)::OpPMInfo*, std::vector<mlir::detail::OpToOpPassAdaptor::runOnOperationAsyncImpl(bool)::OpPMInfo, std::allocator<mlir::detail::OpToOpPassAdaptor::runOnOperationAsyncImpl(bool)::OpPMInfo>>>&&)::operator()<mlir::detail::OpToOpPassAdaptor::runOnOperationAsyncImpl(bool)::OpPMInfo&>(__gnu_cxx::__normal_iterator<mlir::detail::OpToOpPassAdaptor::runOnOperationAsyncImpl(bool)::OpPMInfo*, std::vector<mlir::detail::OpToOpPassAdaptor::runOnOperationAsyncImpl(bool)::OpPMInfo, std::allocator<mlir::detail::OpToOpPassAdaptor::runOnOperationAsyncImpl(bool)::OpPMInfo>>>&&) const Pass.cpp:0:0
#19 0x000055e3a06aeb3b mlir::detail::OpToOpPassAdaptor::runOnOperationAsyncImpl(bool) (/home/workdir/llvm-project/build/bin/mlir-opt+0x43dbb3b)
#20 0x000055e3a06acb9c mlir::detail::OpToOpPassAdaptor::run(mlir::Pass*, mlir::Operation*, mlir::AnalysisManager, bool, unsigned int) (/home/workdir/llvm-project/build/bin/mlir-opt+0x43d9b9c)
#21 0x000055e3a06ad2e2 mlir::detail::OpToOpPassAdaptor::runPipeline(mlir::OpPassManager&, mlir::Operation*, mlir::AnalysisManager, bool, unsigned int, mlir::PassInstrumentor*, mlir::PassInstrumentation::PipelineParentInfo const*) (/home/workdir/llvm-project/build/bin/mlir-opt+0x43da2e2)
#22 0x000055e3a06afabe mlir::PassManager::run(mlir::Operation*) (/home/workdir/llvm-project/build/bin/mlir-opt+0x43dcabe)
#23 0x000055e3a06a803b performActions(llvm::raw_ostream&, std::shared_ptr<llvm::SourceMgr> const&, mlir::MLIRContext*, mlir::MlirOptMainConfig const&) MlirOptMain.cpp:0:0
#24 0x000055e3a06a7c93 llvm::LogicalResult llvm::function_ref<llvm::LogicalResult (std::unique_ptr<llvm::MemoryBuffer, std::default_delete<llvm::MemoryBuffer>>, llvm::raw_ostream&)>::callback_fn<mlir::MlirOptMain(llvm::raw_ostream&, std::unique_ptr<llvm::MemoryBuffer, std::default_delete<llvm::MemoryBuffer>>, mlir::DialectRegistry&, mlir::MlirOptMainConfig const&)::$_0>(long, std::unique_ptr<llvm::MemoryBuffer, std::default_delete<llvm::MemoryBuffer>>, llvm::raw_ostream&) MlirOptMain.cpp:0:0
#25 0x000055e3a0753a65 mlir::splitAndProcessBuffer(std::unique_ptr<llvm::MemoryBuffer, std::default_delete<llvm::MemoryBuffer>>, llvm::function_ref<llvm::LogicalResult (std::unique_ptr<llvm::MemoryBuffer, std::default_delete<llvm::MemoryBuffer>>, llvm::raw_ostream&)>, llvm::raw_ostream&, llvm::StringRef, llvm::StringRef) (/home/workdir/llvm-project/build/bin/mlir-opt+0x4480a65)
#26 0x000055e3a06a18f2 mlir::MlirOptMain(llvm::raw_ostream&, std::unique_ptr<llvm::MemoryBuffer, std::default_delete<llvm::MemoryBuffer>>, mlir::DialectRegistry&, mlir::MlirOptMainConfig const&) (/home/workdir/llvm-project/build/bin/mlir-opt+0x43ce8f2)
#27 0x000055e3a06a1ba3 mlir::MlirOptMain(int, char**, llvm::StringRef, llvm::StringRef, mlir::DialectRegistry&) (/home/workdir/llvm-project/build/bin/mlir-opt+0x43ceba3)
#28 0x000055e3a06a1db2 mlir::MlirOptMain(int, char**, llvm::StringRef, mlir::DialectRegistry&) (/home/workdir/llvm-project/build/bin/mlir-opt+0x43cedb2)
#29 0x000055e39d5878df main (/home/workdir/llvm-project/build/bin/mlir-opt+0x12b48df)
#30 0x00007f572765ad90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#31 0x00007f572765ae40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#32 0x000055e39d587435 _start (/home/workdir/llvm-project/build/bin/mlir-opt+0x12b4435)
Aborted (core dumped)

```
</pre>
<img width="1" height="1" alt="" src="http://email.email.llvm.org/o/eJzsWltv2zry_zTMCxFDInV9yIPjxP9_gQYNmp7dR4MiRza3NKklqTQ5n35BSbZkJ2lOTn16dosAuUjkaG6_meGIInNOrjXABUovUXp1xlq_MfbCfQNg4qwy4vHCg_OYm-1WekTnGKWXlYgrKBhKrxApNt43DtE5IktElmvpN20142aLyFKp-92_88aafwH3iCwHVmQ5sCEJoUUiygJqEhV5naR5XCVZAlGcRnGdMkRKFM37H-ehwd5gC401ouUQJEdzlEXDTzTfKmnPTeNxUHwW7vD5ebg-d7w-b2QDSmqp14heaXMOjVRm3cJ5A2F8fcSsN5655-QY0SrAKL9E0RzXreaz8AejJNoyqREpECl30xhjRFIeY0SvMLPSb2bcaOeZ9jgMzrHUAh5G0mhC6dpK9o8jstjzOXzE8XpWGxtmmV33cnpKb4aLznc9671SnSxvvoLu5blHzWfwALz1cECGh7lHCUqMD-dXO5X3VxZ8a3W46ceGvxPPoWi-sMxtcMX4V2_Z91DsQo4sN2YLiCy_GftVSPs0qIZQk5qrVsA4cNc2jbGB4ob5zfWDt8zNNojOE1IE1l9wR0jniM6FvJcCFiDVXcgJgUjxW3D4Pzoc08vfOhcpo9fd6MHdl_EuvQqM586B9dJojLLoCrTZSs18B1CGSIYRIVfyXrpAUT3i38EaRAgiOa6ZVCBmKJrffrye311j11Zb6THDVbsOgW-sD6C-OfGkcy04RJaYaYEHV2G_AcwP0Qiy7zzjX7Fot02PTTTrEb-1Zm3ZFjO7bregfdAA_3DKYURohKOHKIqiNAVaipQVMS8m6LhH11_cWql9p96XLnRIMRJZ9m1lnLfAtp2fF1hq38EXsvHVKKpaqUT4H9J3uQ9Bchk9xESkMS_6WhTUjY_UTTnAc-p-bnUIJ6b-n2mhwLpdYTiBRoQDjBqRYwdWIsYHshEpOn8ssJNrqWuz8ojMw_29kaK7LIcn3Iw3Afqo--0F0EFAXqc5ybOcpiQa7FCyQmT5UGSrLDlXUrcP52vd9hN85sws63ROSEqiUePkkCHPy5rjxm8sMLH6KpV6G_cyK2s-ck-P1U3yDK9dZ95b1U7ybGScHTJOy7ymmFUhL9_ElhR5TUe2-RO2cfVmhnE1MiwOGWYMyuxtDGkJ5cTwchphdRanZRl3yT_EPK_7iyHjYWnsR2MaRIqR6DN8s9KDvQyLap-jz3BYGvupeWHudl9PPjVdhe1W0oFXZYwaAvmHM4zShJRlPPQfhMYHJapOBY8oeUH7YPeo6C3zHqzuZ7fM881ci8ETB975ngMGJjsHdgaXvfGnsDUqI0pGW6f1jRFIeQ2kKxOTIhf6nYDAykKN6KKb7csbotc9CWdKhYVlVWtEF0-MmTeNkjwsjK_75lMDlgVxQ836vmcWL-sZYgQfsB4YTCKps-B7THbG_hCTceKjWUvO1GdwrfJ_jG_ZTyOSrKJuoOi7kRI_ce5RMQ_4kiN8Sy7qpy59x-cH8PnxrMyqIuOiHrOSTlGLcsJYzIIYpo1-3JrWYc224JquMRoC5P8sgHg8xODKynsY9G-s4eDcP439qmSwoOtPXn7qmWBKjtTKSUYn-LOmUTtWrmMs1ePRqrDuAudoPVha8zvspA8M7sAfVPyRuld5oF4YXcv1qZeEJEkTktERkPTA8qIUMaSvAfIFnL9bLKfLgxu6RdvqT3qSSB0UA_1vXj5py4IK2YEKGeMsmTpfgGdS7VL0i_nUBHFzwZp9VttWH0W0c0-S-OX0nmumHp10N0yzdUjvnc8XuNXd_oI4WR-eUFGyZAJAfmS9IEDebP0AxXE9C6R7o7KTu-OwRDr3QTtvu7cqY5-poVOCXvK0HYJbZkH7D7o2u_Q4UchTwQhMOoPi0OMVzQlg1nrTtwejyg2zTClQS2OvGd8gulit1rpd8YeHnmC10sZumVqFVaFfZBZvhW6SLnP3qPmHbaMQKXqPl3skb4JjBqc6L_rxe-A_Q-hEIlPK8J9haei_rofl7a8QNOk6RvY3Hz98Xhjt4WH3XvkO-N8B-LvXf60067YMJ2O5YttKMERyRIp3sH8-2Ad4mGZw9PDm-xdbnvVV9x32vw32Yc8lMH6mHS-PGlKoaHXi2nCSpq6qaLVv6kh0_BJRlfyXfomoSj5aH7-_RPzclwhCjjxeswqOFN2Z_mx0HXruNBpyVsGoIT3SsIhohRuwtbHbebdJ5F759rQvVW7DLIhV4-3BntKdaS2Hm7VF9PqFLY2nHfVkTkn7qfE3TOp-s2O6A4Uns0-LFEmOjMt5SfFLu11_Zntsb3ur5b9beGL7DWyNfbxs67oP7j29gJq1yq8EKPDw8jP7tutlBF7fhZ446Y9i-ZfbM2p3JZkC7j_DWjpvH58Gx_cC4Mlr2u5T9X8FMq-E5-GuWp5SlqXTDy2Nkn6uxW2_c7nT9W8Juv_BlPguxXTuzlup15-hfnH4JFuqRcSydCy8x_uZcVGT56P-V8vZU6xiHIp6ss4eb4_GFaMvOnNoKPiG9a3D_K3h8JonTmRhxcYNYFIcWyiql8PlLRb-FFNENQGrPDzBUeSFqPGWSX2K0yJVUky-JO2P2-xOGzBRvvEwBylFGY0M42OGkER4tQrPrJxn1q8mlvxhEZBMRJBj_yQ0xT3z03gooUMdmlfGeug-IHJjoTsIBWI8ibg7qXYmLqgoacnO4CLOE0JKGqXkbHORViSnOYGKlBWpCh7zKOWc8rjIK0Z4dCYvSETSiMZFHMU5JbO8KuuEZCwv64ynUYGSCLZMqlkwYWbs-qw7wHUR0zjPszPFKlCuO7dJSBeqhKD06sxedCZX7dqhJFLSeTdy8NKr7qxn6CtReoVRFh0f1sii_jwYCPxtAxq3Tup1IHzuQFcW4ab_ePXjJ97OWqsu_vyptsEv9xfkPwEAAP__z9RMCw">