<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/155072>155072</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            ICE on _BitInt with -fenable-matrix
        </td>
    </tr>

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

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

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

<pre>
    https://godbolt.org/z/9bGTx68x9
```c
void f() {
        _BitInt(2) x = 0; // crash when size < 8
        __builtin_matrix_column_major_store(x * __builtin_matrix_column_major_load(&x, 1, 1, 1), &x, 1);
}

int main() {}
```
```
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: /opt/compiler-explorer/clang-trunk/bin/clang -g -o /app/output.s -mllvm --x86-asm-syntax=intel -fno-verbose-asm -S --gcc-toolchain=/opt/compiler-explorer/gcc-snapshot -fcolor-diagnostics -fno-crash-diagnostics -fenable-matrix <source>
1.      <eof> parser at end of file
2.      Code generation
3.      Running pass 'Function Pass Manager' on module '<source>'.
4.      Running pass 'X86 DAG->DAG Instruction Selection' on function '@f'
 #0 0x0000000003d05bb8 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-trunk/bin/clang+0x3d05bb8)
 #1 0x0000000003d0358c llvm::sys::CleanupOnSignal(unsigned long) (/opt/compiler-explorer/clang-trunk/bin/clang+0x3d0358c)
 #2 0x0000000003c53798 CrashRecoverySignalHandler(int) CrashRecoveryContext.cpp:0:0
 #3 0x00007a3fc4442520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
 #4 0x0000000005260fba llvm::SelectionDAG::isConstantIntBuildVectorOrConstantInt(llvm::SDValue, bool) const (/opt/compiler-explorer/clang-trunk/bin/clang+0x5260fba)
 #5 0x000000000526119b llvm::SelectionDAG::canonicalizeCommutativeBinop(unsigned int, llvm::SDValue&, llvm::SDValue&) const (/opt/compiler-explorer/clang-trunk/bin/clang+0x526119b)
 #6 0x000000000527c34f llvm::SelectionDAG::getNode(unsigned int, llvm::SDLoc const&, llvm::EVT, llvm::SDValue, llvm::SDValue, llvm::SDNodeFlags) (/opt/compiler-explorer/clang-trunk/bin/clang+0x527c34f)
 #7 0x00000000054194fe llvm::DAGTypeLegalizer::PromoteIntRes_SimpleIntBinOp(llvm::SDNode*) (/opt/compiler-explorer/clang-trunk/bin/clang+0x54194fe)
 #8 0x0000000005433f8b llvm::DAGTypeLegalizer::PromoteIntegerResult(llvm::SDNode*, unsigned int) (/opt/compiler-explorer/clang-trunk/bin/clang+0x5433f8b)
 #9 0x000000000535175a llvm::DAGTypeLegalizer::run() (/opt/compiler-explorer/clang-trunk/bin/clang+0x535175a)
#10 0x0000000005351da1 llvm::SelectionDAG::LegalizeTypes() (/opt/compiler-explorer/clang-trunk/bin/clang+0x5351da1)
#11 0x00000000052bf142 llvm::SelectionDAGISel::CodeGenAndEmitDAG() (/opt/compiler-explorer/clang-trunk/bin/clang+0x52bf142)
#12 0x00000000052c1c4d llvm::SelectionDAGISel::SelectAllBasicBlocks(llvm::Function const&) (/opt/compiler-explorer/clang-trunk/bin/clang+0x52c1c4d)
#13 0x00000000052c3aa6 llvm::SelectionDAGISel::runOnMachineFunction(llvm::MachineFunction&) (/opt/compiler-explorer/clang-trunk/bin/clang+0x52c3aa6)
#14 0x00000000052b1241 llvm::SelectionDAGISelLegacy::runOnMachineFunction(llvm::MachineFunction&) (/opt/compiler-explorer/clang-trunk/bin/clang+0x52b1241)
#15 0x00000000030d2d0d llvm::MachineFunctionPass::runOnFunction(llvm::Function&) (/opt/compiler-explorer/clang-trunk/bin/clang+0x30d2d0d)
#16 0x00000000036478a2 llvm::FPPassManager::runOnFunction(llvm::Function&) (/opt/compiler-explorer/clang-trunk/bin/clang+0x36478a2)
#17 0x0000000003647b31 llvm::FPPassManager::runOnModule(llvm::Module&) (/opt/compiler-explorer/clang-trunk/bin/clang+0x3647b31)
#18 0x0000000003649479 llvm::legacy::PassManagerImpl::run(llvm::Module&) (/opt/compiler-explorer/clang-trunk/bin/clang+0x3649479)
#19 0x0000000003faa6cd 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*) (/opt/compiler-explorer/clang-trunk/bin/clang+0x3faa6cd)
#20 0x000000000462dc4c clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) (/opt/compiler-explorer/clang-trunk/bin/clang+0x462dc4c)
#21 0x00000000062b96cc clang::ParseAST(clang::Sema&, bool, bool) (/opt/compiler-explorer/clang-trunk/bin/clang+0x62b96cc)
#22 0x000000000462e43d clang::CodeGenAction::ExecuteAction() (/opt/compiler-explorer/clang-trunk/bin/clang+0x462e43d)
#23 0x000000000493a7fa clang::FrontendAction::Execute() (/opt/compiler-explorer/clang-trunk/bin/clang+0x493a7fa)
#24 0x00000000048b3b3b clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/compiler-explorer/clang-trunk/bin/clang+0x48b3b3b)
#25 0x0000000004a2bcb3 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/opt/compiler-explorer/clang-trunk/bin/clang+0x4a2bcb3)
#26 0x0000000000dc28b5 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/opt/compiler-explorer/clang-trunk/bin/clang+0xdc28b5)
#27 0x0000000000dba85d ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) driver.cpp:0:0
#28 0x00000000046a0b19 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
#29 0x0000000003c53bb3 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/compiler-explorer/clang-trunk/bin/clang+0x3c53bb3)
#30 0x00000000046a0d39 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
#31 0x0000000004663cbd clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&, bool) const (/opt/compiler-explorer/clang-trunk/bin/clang+0x4663cbd)
#32 0x0000000004664c71 clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&, bool) const (/opt/compiler-explorer/clang-trunk/bin/clang+0x4664c71)
#33 0x000000000466ed0c clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&) (/opt/compiler-explorer/clang-trunk/bin/clang+0x466ed0c)
#34 0x0000000000dbf0c1 clang_main(int, char**, llvm::ToolContext const&) (/opt/compiler-explorer/clang-trunk/bin/clang+0xdbf0c1)
#35 0x0000000000c6de14 main (/opt/compiler-explorer/clang-trunk/bin/clang+0xc6de14)
#36 0x00007a3fc4429d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#37 0x00007a3fc4429e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#38 0x0000000000dba2f5 _start (/opt/compiler-explorer/clang-trunk/bin/clang+0xdba2f5)
clang: error: clang frontend command failed with exit code 139 (use -v to see invocation)
Compiler returned: 139
```
</pre>
<img width="1" height="1" alt="" src="http://email.email.llvm.org/o/eJzkmsty2zjWgJ-G3qCkIgGKIhde0LKV313pPy7L0zU7FQgeymiDAAcAFTlPPwWSEi--JWN1z2JSSSTh-p0LcA5AUmP4TgJceosrb3F9QWv7qPTlDfuRwdNFpvLny0drK-OR1MNrD693Ks-UsHOldx5e__DwOsm-PByi-JB4fupFfvuXeX66VzxHhYdjDyfIW165ej_ZXnF7K62HY-zKD8gj18j3yBVqJ0BMU_OIvj-CRIb_AOSRFYq7vtus5sJyuS2p1fywZUrUpfv1p9JbY5UGD8cH5OEUvd9WKJo3ZNHBwysUDP9L3OegJvFIw768bihSLi0qKZcDydqqo_CT73dfb9LNDTJ1VnKLKMrqHdJQKW2RVWiiXm4f62zOVOnhtRD748es0upPYNbDa25MDcZpisoccclEnQOyj9BpLqPsyWrKwOFXGiqtGBgDOTKq1m2x60mNUYxTCznStUSGaV7ZueenG0vZE8rrsnJYfurPPT-502qnaYmo3tUlSOuQncVU5ZiYKisuQM_gUAmlQbsyQeVuZnUtnzy8zpy-2jI026GZcp1pVbkhalvVdm7QrHSiotnsEEczasqZeZaWHjxyzaUFgWaFVLM96EwZcPVotkGz2Y6xmVVKsEdnE3L9LpRrbCStzKOyaFYwJZSe5ZzupDKWM9PO0ShyUgySZgJmrTM5p-y0SW48Pw2cijyyAlV45AZVVBvQiFoEMkeqQAUX4Pkpds1WKge0AwmaWq6k56fEFd_XUnK5QxU1Bnl4ua4lc_XozhX8TiXdOQmWSElUqrwW4FqNOPDSmS98bbR_xhG6Tr_MPHJznX5Bt9JYXbfjb0BA860bvDhO7IYP_cJ9-M7WxEf-wT_-Ibm_yLIYNU5KUo-k5tm0X-40l7bxoofWD-O-kabft8pYDbT0cOR8kbvNIEHNavpP3MnDV_6ho3GLtWUNJqxkEbPXWFcCqKyrb3LDd5IKD8e1bLbEHAnlBj8DmZu7J8MjMrYgyyRGK-dx98DUHvRzi_J_VObCTRB3Ghq1WSlp4WDnrHKr1G_-teOTbvwlJQULwxAvsN_JIHjm4fUhjrZROBNc1ofZTtZtBZsbNY8a5KZLDxwOgRc48ouMDlR58p_r9Etbws1KSWOpdBv9Vc1F_gcwq_Q3PSgfecXm-g8q6mZrypQSTlrmmn5S9x1sL8piIkoQJNm7ojAqleSMCv4DVqosa0st38MVl6oa-kpjohV6RaLo7fKzCenE6IWMxkIuGQmLd4Xcgf1_lcMH8nxVrOV9IdPNHw9vCPkThW7mtaA78_ml1snaa2I50kQYJGEBg8mv0y8PzxV8hV1jX33cvVSpLNxKew9mu-FlJdyPKy6_VROnbbWWnoG8ZevJ4zE5IUWc_QI57EDfg6nFdJmdiFdobOvPS9Aw9hIkIwnIIlgu6IcS6PqUVX2Opp2vpXHRwJ_S5DR4d00cwRykORtTToOeKRiv06wIQvwG0-0GRBevVA5fQKYyvym5dbhnYWtn79nwmI0FLMw_ZGtLUyGuqOHsSij2ZEb-d8pp-n3k8-QNW09OJuSE0uhDcl3Lb_J3yh65hCPkiPxF3XnQHVyPPgm0WYDDt5zUoTsXZc__VQEaxF6AUXglfo5zf-g1EwaX2A7oX8U-K29H1POOIiWJwmVMhytwfecQj6n330rasvSkyylpRoKfIP29OSiMHaErOhNlRgb2jyeUSbhMBpRi4LAD3tuyEsPt_69idTQ96yg-kYLSiOWobd_MDSW3V5Q9gcy_NQdUD8eD6lVHcNsktOyY6I1aNDv1t8p5hXmZCFrN5e4einHxUeR0MlqHknY-NuxyK62uDd_DPRQrae-s9siqr94X3SpbcwGbZ2OhbA6LK2Rs3tbUkv-rhm016enOatV3zS1sjye2QaccCloLu81BgIUPOpKbbs6XIrkzQV06E54hkeoMeTIzHgX-MMI5C9l7EE1he_R60FQa0RzS_yH5xP7p5qE7gp3FPTuynnuUHEQ4SyI24r6j2kC6eRhTbaCknae156j-PPU5vo6g58MTvUJI8le8v_PX9phwAFZbOLrwGdKWbt6eahT8w4TQZUGHVGvtbHZaRkOs8wC1U_ZAo5AexhnJSIbe20Ze1dTbEpzF91qsHnoUxkOKM5aRIXSH17PvFaMvUV9ukWdY4B1ODzuK4X7OcJwtEGPBtrui7XelVGv67DZcsmKPVB-T0PS4M43K8ArtFc_PwtxC9cjLMXJG40WOjkpdBQ_Nih0e20oqRHuF0sbKV_gn0cWN0e1Po2Q713wPenJr5Jji8XqmfhYkjQYGgx5vBre6UWJT2y6bZn9v70uEyCh72hbSYfbO0E7cOcYqWKmypDKfrsBXjXWKOKoJpVSMYk0fR08x5tRhu2WHQxC0PzJ3KHHxiDumRoWjxq5gazXl1hyrJ8NRIZyjKz2od03Sfp9NT7c6bRcPLwUts5x6eNmrCsfHu8XfVPaKMZLpFWGWkYEdXrsIbGvua7mhBYjnkS7ft9vnY24LePJv4k99KScJ-l_2BafgeUW1nftvGn18Yx1GEWFZ_qbWGiPRF0HsqMrRPjzp6BqMLvJ-rmk6yivOc3XZSdl7ziSriEK2DH5VB7-pzLytgN9U9pUb-8ZN5sud9mTwinJn6-5i9Gd11nnFX6E5p5tec2SiOch99hbl9eD7KJa_EsTf0vjfqLnPZ4mNNnpdhZP4W_is87Jj0nBkbfaFtFvVH0fXT6YJDUiPOUrDfBblEITNg-dPztOO1M8TjR8Y4SRPfvGBUdOlH3A5HRBCH223rs_WWKrtdiDFT08B4WCKeJpC4WKB2sE_bQU3VjvT0VcRaO12-rT1ElR0SThindcWlAvI0XduHxEcuPOKHFBAGpeoDaDZHlmFDADig2zZzXHMkpEGW2sJbtG4nsOXCC7yS5InJKEXcBksF4sE43BBLh4vSQALsiAkDhhhQRAsiiikNErCPCqSIsIX_BL7eOHHmPhhEAZkvvQxjZLMX_osi8Ig9kIfSsrF3Hn3XOndRfN-wWWwWPhLfCFoBsI0b4dgLOE7amo9jL3F9YW-bF5NyOqd8UJfcGNNP4zlVsDl7eoGKYm6lz5aBU2epV_UWkxfMvmFtyA60P0l_ncAAAD__znKqpc">