<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/125301>125301</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [vplan] Assertion: found instruction with poison generating flags not covered by VPRecipeWithIRFlags
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            new issue
      </td>
    </tr>

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

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

<pre>
    ```
clang++ -O3 -mcpu=neoverse-v2 -c reduced.ll

clang++: llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp:1926: llvm::VPlanTransforms::dropPoisonGeneratingRecipes(llvm::VPlan&, const std::function<bool(llvm::BasicBlock*)>&)::<lambda(llvm::VPRecipeBase*)>: Assertion `(!Instr || !Instr->hasPoisonGeneratingFlags()) && "found instruction with poison generating flags not covered by " "VPRecipeWithIRFlags"' failed.
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace, preprocessed source, and associated run script.
Stack dump:
0.      Program arguments: clang++ -O3 -mcpu=neoverse-v2 -c reduced.ll
1.      Optimizer
2. Running pass "function<eager-inv>(float2int,lower-constant-intrinsics,chr,loop(loop-rotate<header-duplication;no-prepare-for-lto>,loop-deletion),loop-distribute,inject-tli-mappings,loop-vectorize<no-interleave-forced-only;no-vectorize-forced-only;>,infer-alignment,loop-load-elim,instcombine<max-iterations=1;no-verify-fixpoint>,simplifycfg<bonus-inst-threshold=1;forward-switch-cond;switch-range-to-icmp;switch-to-lookup;no-keep-loops;hoist-common-insts;no-hoist-loads-stores-with-cond-faulting;sink-common-insts;speculate-blocks;simplify-cond-branch;no-speculate-unpredictables>,slp-vectorizer,vector-combine,instcombine<max-iterations=1;no-verify-fixpoint>,loop-unroll<O3>,transform-warning,sroa<preserve-cfg>,infer-alignment,instcombine<max-iterations=1;no-verify-fixpoint>,loop-mssa(licm<allowspeculation>),alignment-from-assumptions,loop-sink,instsimplify,div-rem-pairs,tailcallelim,simplifycfg<bonus-inst-threshold=1;no-forward-switch-cond;switch-range-to-icmp;no-switch-to-lookup;keep-loops;no-hoist-common-insts;hoist-loads-stores-with-cond-faulting;no-sink-common-insts;speculate-blocks;simplify-cond-branch;speculate-unpredictables>)" on module "reduced.ll"
3.      Running pass "loop-vectorize<no-interleave-forced-only;no-vectorize-forced-only;>" on function "foo"
 #0 0x0000aaaaaf09abe8 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int)
 #1 0x0000aaaaaf098908 llvm::sys::RunSignalHandlers()
 #2 0x0000aaaaaf098c88 llvm::sys::CleanupOnSignal(unsigned long)
 #3 0x0000aaaaaefee5bc CrashRecoverySignalHandler(int) CrashRecoveryContext.cpp:0:0
 #4 0x0000fffff7fb08dc (linux-vdso.so.1+0x8dc)
 #5 0x0000fffff7c2f200 __pthread_kill_implementation ./nptl/pthread_kill.c:44:76
 #6 0x0000fffff7bea67c gsignal ./signal/../sysdeps/posix/raise.c:27:6
 #7 0x0000fffff7bd7130 abort ./stdlib/abort.c:81:7
 #8 0x0000fffff7be3fd0 __assert_fail_base ./assert/assert.c:89:7
 #9 0x0000fffff7be4040 __assert_perror_fail ./assert/assert-perr.c:31:1
#10 0x0000aaaab0bfd210 llvm::VPlanTransforms::dropPoisonGeneratingRecipes(llvm::VPlan&, std::function<bool (llvm::BasicBlock*)> const&)::'lambda'(llvm::VPRecipeBase*)::operator()(llvm::VPRecipeBase*) const (.isra.0) VPlanTransforms.cpp:0:0
#11 0x0000aaaab0c065b4 llvm::VPlanTransforms::dropPoisonGeneratingRecipes(llvm::VPlan&, std::function<bool (llvm::BasicBlock*)> const&) 
#12 0x0000aaaab0b99078 llvm::LoopVectorizationPlanner::tryToBuildVPlanWithVPRecipes(llvm::VFRange&)
#13 0x0000aaaab0b99634 llvm::LoopVectorizationPlanner::buildVPlansWithVPRecipes(llvm::ElementCount, llvm::ElementCount)
#14 0x0000aaaab0b99c1c llvm::LoopVectorizationPlanner::plan(llvm::ElementCount, unsigned int)
#15 0x0000aaaab0b9b05c llvm::LoopVectorizePass::processLoop(llvm::Loop*) 
#16 0x0000aaaab0b9d464 llvm::LoopVectorizePass::runImpl(llvm::Function&) 
#17 0x0000aaaab0b9da1c llvm::LoopVectorizePass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) 
#18 0x0000aaaab07856fc llvm::detail::PassModel<llvm::Function, llvm::LoopVectorizePass, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) PassBuilder.cpp:0:0
#19 0x0000aaaaaeb3fef8 llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&)
#20 0x0000aaaaadbd51dc llvm::detail::PassModel<llvm::Function, llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) NVPTXTargetMachine.cpp:0:0
#21 0x0000aaaaaeb3e97c llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&)
#22 0x0000aaaaadbd513c llvm::detail::PassModel<llvm::Module, llvm::ModuleToFunctionPassAdaptor, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) NVPTXTargetMachine.cpp:0:0
#23 0x0000aaaaaeb3e3a4 llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) 
#24 0x0000aaaaafa2b598 (anonymous namespace)::EmitAssemblyHelper::RunOptimizationPipeline(clang::BackendAction, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream>>&, std::unique_ptr<llvm::ToolOutputFile, std::default_delete<llvm::ToolOutputFile>>&, clang::BackendConsumer*) BackendUtil.cpp:0:0
#25 0x0000aaaaafa2e258 clang::emitBackendOutput(clang::CompilerInstance&, clang::CodeGenOptions&, llvm::StringRef, llvm::Module*, clang::BackendAction, llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem>, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream>>, clang::BackendConsumer*)
#26 0x0000aaaaafb69e8c clang::CodeGenAction::ExecuteAction()
#27 0x0000aaaaafef684c clang::FrontendAction::Execute()
#28 0x0000aaaaafe8bb30 clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) 
#29 0x0000aaaaaffe49b0 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) 
#30 0x0000aaaaadb8f874 cc1_main(llvm::ArrayRef<char const*>, char const*, void*)
#31 0x0000aaaaadb87f34 ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) driver.cpp:0:0
#32 0x0000aaaaafcd7778 void llvm::function_ref<void ()>::callback_fn<clang::driver::CC1Command::Execute(llvm::ArrayRef<std::optional<llvm::StringRef>>, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>*, bool*) const::'lambda'()>(long) Job.cpp:0:0
#33 0x0000aaaaaefeeac0 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>)
#34 0x0000aaaaafcd7d48 clang::driver::CC1Command::Execute(llvm::ArrayRef<std::optional<llvm::StringRef>>, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>*, bool*) const (.part.0) Job.cpp:0:0
#35 0x0000aaaaafc9daf4 clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&, bool) const
#36 0x0000aaaaafc9e744 clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&, bool) const 
#37 0x0000aaaaafca6268 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&) 
#38 0x0000aaaaadb8c654 clang_main(int, char**, llvm::ToolContext const&)
#39 0x0000aaaaadb9c06c main
#40 0x0000fffff7bd73fc __libc_start_call_main ./csu/../sysdeps/nptl/libc_start_call_main.h:74:3
#41 0x0000fffff7bd74cc call_init ./csu/../csu/libc-start.c:128:20
#42 0x0000fffff7bd74cc __libc_start_main ./csu/../csu/libc-start.c:379:5
#43 0x0000aaaaadb87a24 _start
clang++: error: clang frontend command failed with exit code 134 (use -v to see invocation)
clang version 21.0.0git (https://github.com/llvm/llvm-project 82b923defe27cc46ecf3084f3a8f1c0d1c36199e)
Target: aarch64-unknown-linux-gnu
Thread model: posix
InstalledDir: /proj/nv/llvm/Linux_aarch64/llvm-2268/bin
Build config: +assertions
clang++: note: diagnostic msg: Error generating preprocessed source(s) - no preprocessable inputs.
```
```
# works ok
clang++ -O3 -mcpu=neoverse-n1 -c reduced.ll
```
</pre>
<img width="1" height="1" alt="" src="http://email.email.llvm.org/o/eJzkWlFz46qS_jXkhZJLQrItP-RB8YzvnVNzdqYy2bv75kLQstkg0AJykvvrt0CSIylOJjNzz9lTdV1JlY3g66b766ZBUGvFQQFco-UNWn64oq07anNN7RFMTRUTCqQUV6XmT9doFfd_ccEkVQdEbhC5wdGXFEc1a1qUflCgT2AsRCeCI4YN8JYBX0iJ4mI6DKUFlvJUI7KTokRkd2eospU2tUVk9w9gThvxT_Dfv0qqnp8uWNOgtEg2ZHXGSAuUFrN-XSM3uvmqhdXqb6DAUCfU4RaYaMAiks8GI7JCZIuZVtZh63j3qGoVc0IrlG5LreVk2A21gt1Ize4RKRDZoPRjANl0j1G6lbQuOZ3J6jS4oRaeh6UFLqwF40Vhb2WSI5J8UtYZjNZbtN7i4XeE0o9Haufz2kl6sGHYBpENDoqsMCKk0q3iWPihbZgKfhDuiJswHh_OALjyCFhph5n3I3BcPnkA_z9o_V_CHT_d9rIIImtcUSGBL1BcfP38sfj2Edu2rIXDFJftARtotHHYaXx0rgluITtEdgfhjm25YDpQoGeCPNVRY_T_AHOI7IS1rffTDtOgP5MtB-yOgJmh9ohLyu6doQy81xoDjdEMrAWOrW5N1-xHUms1E9QBx6ZV2DIjGuf1_eYou8e8rT2jUFzECxw-X40-GFpjag5tDcp5rfHPcD7pAb80TtTin2BQXJAFvm2V8vZuqLXBQc8UA3oAEwl1ClTKK6mpI0I5RLZSP4CJAjupcpFQzghlBbOIbNnRhB668VTTuomMdtQBSrdHoBxMxNtGCkY7MTdKR95g1EBUaRNJp4O8gBBxkBD6eSL1TcI6I8rWeaMK5R0UOSmimjaNUJ4KXb_TOXDTrdJeRzAS6CmIYcAjreRTJ__cdfaoU0SoCkxEpTgo74EBX2rKI5CiDl2sY7ouhfLSavoYCReYrJVF6YdkEGNE9RRV4rHR3o4B3Yq6kaJ6YtUhhLVqbeThInc0YI9a8h6g0uaBGh7ZB-HY0Rufo_Sm_2WoOkDkdCSYZ9DQ7HQktb5vm06BewCvt_bcvzlqYV3EdF1rFSTarlPX7mdnI-u0ARv5GA0Co4q20senFyHU_Xy4bYC1kjqISp-JQlM_v258aahix07Qc-dWNQa4YI6WEmxvFzlyoWdU9yMazPxLRg8ObJXRUqJ0-yXtWt2QsaMHanxUeDWMpijdNgYsmBNEwU2XWfGr-tTWhuwsWI3SLZVSPwwmCpHysQuCs8ioMrqOqLVt3XRCeiDvmV6fwfqIbLk4RQbqqKHC-K6OCsmolD2F381DpaMfoqL39Es2Tqh4Zt2MTu-lohfxS2x8k4obv-xohWvNWwk-SY4SKyEoLtI-t86T6b80DwUdhvTcraW6E48RSWMcP8ZxHFP_qeINLSEfVST2qa9CvhqhXFhs7rrlalQNGPqw19YZoHVff4Rsv-lFJDMR-Sa-KOK2Vd_EQVH5d6q4BDMUAh0KmaOw_CLKVgJVbfOlx0Ikb1WoEDmW2ofmAJiOAaECWJYMb_2qfAuhdniaaINI3s1q2merlYNH15d0cfjv8LMev_KfdVXGOWc4xKlqH6MTt3ph9SJB5CZ-zDl7Vmw5GchIReIY7_eNDyjK9_dCyr2nI_hgDjGOF4jsVOMkIrtxtwVDaZFlKC3Wqx58NQEvga7WDB9smGmAsb3Zdovw68lyaHwB02grHhHZGSosBGCyRmkx4K6nuHydpDGmpa-bAo7jXY0cmsLwPPF69cPzmVppxf2caSgn974825fUQsDqGs9fOrDNCGwzA8vibATWgDHaBMxLcJF_HjBTr2Diy36SJuM4KeOy4iSJ_4jK_bWaHX-vaO9q_knpTtZD6b7-bvXu23XjldRmKMDfHNLvMRDJF8Iauoh92-WNzhAV3o7JxI4sXi3L7C9rR9wrTabO32zi9Tj3fNa6GbZ7IR69HgpM99SZpzt90wrJg35-8zFYc6b-7tYvgb0LO8npXPIqzd4tuTwLta9L_djlka1uQzGCX3syaJTNNWIJe7dGTXDQG9LPuVqMZS5nMst4-ZpM-EptT5t-L_W531FMuvcc7vFXM3yerV6z8gjftOpT3Ux307uBbRP-rOf49FWbTfFfxx47qlBUPllhf6fKb738lv3loGFbP-iUT3Ra58tVNdaJg6_z-rWfWvu75iAvI090eTmXn1I1nCb8cTbwioWQBHMhR20mlUGZVlCNwz2Y4y0xf8EZdzMjk2qPl3yZ8H-F0_8wi_wFLYn_4x9f7_77jpoDuN8pOwoFLylEkhmFYLMeG_r3sCW40wO6N2DBaeMX34u6dwN-SPN-yIwB5AUD0h9jwKDJ9p3T-Ql9X3Pgrxvhfc5L585LafYOtl-yzP_7hPspZZPdEyXlcpP7UogqrZ5q3VqsaA22CVu7vhz8WAtXWAt1KZ_-DrIZFvHbVvWHgd0CLxqQ4WQl784X-8qK3YPixTn-zwVZq8T_trBv3FRxv4lsHoxwsB-2kqNBHMK2fR_O9eA7A_vcsXqP2Dut5ZfWNa3bic5575E5GzUW-NIGW61sW_sdZKg5-tb_dEJe4N5y5iggy3yMCbVwPUKnwNTsW103QoL5FE5YGbxUaqs5_A2CB8PRz4xb35wJ1XV1KcLDDC5NsbiQ5j8pZ1orTnAL1Va5rzPDn6q-zPEW_PZkHdR9xv_zmfJ9r_XeWU28U642kLMLxu3N0UXRI7DWwWCh_BlsPQGDapVnE7Cd0co9G3eMNsHJpzh5WaYxfosTF_V6XfAkkUxqo6qCbFNOhPWwzzJPuj-x_w5PR_V4OitT8ipfZ5ixZF9TMc2QhTH0ybM13bIjNcPmrRjcOmkjW3zSgo89Oj2c4mW-rtIMD5PYJnfz12XfaiplV-CG4v-S3FlIeYz-mGiyueRGnC7Vn7OjLsbX63UeNB-BDtvavQmTD097VgyrCaNSlpTd7yu_-R0ZvxPcO2KbbHVdU8XnBLto5HOY6ZA_6LQ2eE4e58A6D9jv2eNjkvQ7U7_v9kEYzmGDCSedfcPeGSqcHR7P4KiUnli-Xjo_912Cl7uXnM-nFN2Q2XnI8K4z748F8W-6vOCMF8eElI0Pfi4dBp6XyW-0Avk0seXbfjvTMptTgGeTZeDfzoXhoKmhxnUHTZd9NV082YbTKnvVaiED0RepdTDlJF3NBvoOo1DeviFj3LXoe3dzG7jZqb6aqQ7r7IdV_02X9nW9f9PlZ2HdRO-38trZTw0V3kXdG9x3T3VcE00mPCT56fLH6IqsXqX4h9H3yQpzYWl5zVJ_4ozPC1k-W13Yatl7dVjKBhkhfIqe_N9dO3r4zRR-w-IVwwE4PM_i-aF8WjG830tR-silxu39GhFUCUfhzLYvD_779wqXBi2OKC3WGUqLtJeYzCVmjOHQXyjh5kK6rx45Csjh2D0hOUoL0sd0Ri4hTuZwSf2LyOna72yWPXA6X_kpyXAH-fKeT3hncL5Cgau-QsKsJ0F3gaS7lAKPwjuLA07SzOet1gKOTthpbAGwGJVEm0ESPoGxQitMkkW8iA8iJLwfu26Cc1JuSMqhArJmLFsBq9I4z6qU5lXCYp6wdJVsNtDJ7XbBfk6UGnZcZVGr7pV-UFH3huqgWt8rvE3CdXcOUODuNVBchMJNSuAfRLALIjuvhufL6Vm9zx5p3-MP6hKyyhHZlYGm4RTOU7sShw7nhg53iOxLPyjta_oCc0EPSlsnGK5tGPjRe2h8E-jibZrc-uiMsNKj57SU3i1N6-zCk2N0S2zynaT4QZt7i_X9ey6QqeTlBbIB7opfp3yTbugVXCfrNE-Xm5zEV8freEWXkC_XMecblkK2YZCVHPIkTjIOMbkS1yQmyzhJE5JkaRYvCKdsWS3XaQ6bZcYJymKoqZALb-yFNoercAnpOiHLNE6uJC1B2nBbjhAFDzg8RYSg5Ycrcx08VLYHi7JYCuvsM4wTToZrdqdwjL_88Hzbyzvg165oXbibddUaef3zN676-Z6uyf8FAAD__37Uw0U">