<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/149512>149512</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            LoongArch: `__attribute__((target("lasx")))` does not imply LSX
        </td>
    </tr>

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

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

    <tr>
      <th>Reporter</th>
      <td>
          xry111
      </td>
    </tr>
</table>

<pre>
    ```c
typedef long long __m256i __attribute__((__vector_size__(32), __may_alias__));
__attribute__((target("lasx")))
void ARGBToUVJRow_LASX(void) {
__m256i const_10 = ((__m256i)__builtin_lasx_xvldi((0x40A)));
}
```

It makes clang error out with `-mno-lsx`:

```
fatal error: error in backend: Do not know how to split the result of this operator!
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 -fno-verbose-asm -S -target loongarch64-unknown-linux-gnu --gcc-toolchain=/opt/compiler-explorer/loongarch64/gcc-14.2.0/loongarch64-unknown-linux-gnu --sysroot=/opt/compiler-explorer/loongarch64/gcc-14.2.0/loongarch64-unknown-linux-gnu/loongarch64-unknown-linux-gnu/sysroot -fcolor-diagnostics -fno-crash-diagnostics -mno-lsx <source>
1.      <eof> parser at end of file
2.      Code generation
3.      Running pass 'Function Pass Manager' on module '<source>'.
4.      Running pass 'LoongArch DAG->DAG Pattern Instruction Selection' on function '@_Z17ARGBToUVJRow_LASXv'
 #0 0x0000000003c91dd8 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3c91dd8)
 #1 0x0000000003c8f7ac llvm::sys::CleanupOnSignal(unsigned long) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3c8f7ac)
 #2 0x0000000003bdfff3 llvm::CrashRecoveryContext::HandleExit(int) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3bdfff3)
 #3 0x0000000003c86ffe llvm::sys::Process::Exit(int, bool) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3c86ffe)
 #4 0x0000000000daeacb LLVMErrorHandler(void*, char const*, bool) cc1_main.cpp:0:0
 #5 0x0000000003be9f23 llvm::report_fatal_error(llvm::Twine const&, bool) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3be9f23)
 #6 0x0000000003bea088 (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3bea088)
 #7 0x0000000005345595 llvm::DAGTypeLegalizer::SplitVectorResult(llvm::SDNode*, unsigned int) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x5345595)
 #8 0x00000000052f1aee llvm::DAGTypeLegalizer::run() (/opt/compiler-explorer/clang-trunk/bin/clang+++0x52f1aee)
 #9 0x00000000052f21d1 llvm::SelectionDAG::LegalizeTypes() (/opt/compiler-explorer/clang-trunk/bin/clang+++0x52f21d1)
#10 0x000000000525fbb2 llvm::SelectionDAGISel::CodeGenAndEmitDAG() (/opt/compiler-explorer/clang-trunk/bin/clang+++0x525fbb2)
#11 0x00000000052626ad llvm::SelectionDAGISel::SelectAllBasicBlocks(llvm::Function const&) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x52626ad)
#12 0x0000000005264506 llvm::SelectionDAGISel::runOnMachineFunction(llvm::MachineFunction&) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x5264506)
#13 0x0000000005250f81 llvm::SelectionDAGISelLegacy::runOnMachineFunction(llvm::MachineFunction&) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x5250f81)
#14 0x000000000306e82d llvm::MachineFunctionPass::runOnFunction(llvm::Function&) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x306e82d)
#15 0x00000000035e9172 llvm::FPPassManager::runOnFunction(llvm::Function&) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x35e9172)
#16 0x00000000035e9401 llvm::FPPassManager::runOnModule(llvm::Module&) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x35e9401)
#17 0x00000000035ead49 llvm::legacy::PassManagerImpl::run(llvm::Module&) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x35ead49)
#18 0x0000000003f3c650 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+++0x3f3c650)
#19 0x00000000045dc69c clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x45dc69c)
#20 0x000000000624098c clang::ParseAST(clang::Sema&, bool, bool) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x624098c)
#21 0x00000000045dce8d clang::CodeGenAction::ExecuteAction() (/opt/compiler-explorer/clang-trunk/bin/clang+++0x45dce8d)
#22 0x00000000048e75ba clang::FrontendAction::Execute() (/opt/compiler-explorer/clang-trunk/bin/clang+++0x48e75ba)
#23 0x00000000048626db clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x48626db)
#24 0x00000000049db573 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x49db573)
#25 0x0000000000db0b25 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0xdb0b25)
#26 0x0000000000da8a0d ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) driver.cpp:0:0
#27 0x000000000464ebc9 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
#28 0x0000000003bdfef3 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3bdfef3)
#29 0x000000000464ede9 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
#30 0x000000000461217d clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&, bool) const (/opt/compiler-explorer/clang-trunk/bin/clang+++0x461217d)
#31 0x0000000004613131 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+++0x4613131)
#32 0x000000000462063c clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x462063c)
#33 0x0000000000dad341 clang_main(int, char**, llvm::ToolContext const&) (/opt/compiler-explorer/clang-trunk/bin/clang+++0xdad341)
#34 0x0000000000c5cb24 main (/opt/compiler-explorer/clang-trunk/bin/clang+++0xc5cb24)
#35 0x00007158a5429d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#36 0x00007158a5429e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#37 0x0000000000da84a5 _start (/opt/compiler-explorer/clang-trunk/bin/clang+++0xda84a5)
clang++: error: clang frontend command failed with exit code 70 (use -v to see invocation)
```

The ICE seems just #131771, but changing `__attribute__((target("lasx")))` to `__attribute__((target("lasx,lsx")))` makes it work.  However they should have the same behavior IMO.
</pre>
<img width="1" height="1" alt="" src="http://email.email.llvm.org/o/eJzkmk1v4zjSgH-NciFsSNSH5UMOipP0dCP9dhBnBoP3IlBUyeaEIrUk5Tjz6xcUZUtyku7MrHt3gR1k0g6_6mGxWFWkSbRmGwFw6cVXXnx9QVqzlepyr16CILgoZPly6SW--6Gen5mXBkqoEJdi437leY3jhKE8J8YoVrQG8tzDqYfTPN8BNVLlmv3pCkPs4aWHV7YXeckJZ0TbiqX9Ca88P3tjGEPUBkz3GXOi9x7GfQ-89PxsJ1mJsodPV4_y19--PMjn_C5b_-7h1FZ4eIm8hRvYcVIptMkDH3nhNTpwdlUeXuZ50TJumMitoHy_4yVzbfx95GeD2I7VW1zb3wf92M9-9tmgmjyBRpQTsUGglFRItgY9M7NFXuLPaiFnXO9tjzBzncZjVMQQ7vp5YdYPwAQqCH0CUdqya4mENOhJyGe0lc_ISKQbzgwyW0AKdMsNkhUyW6aRbEARI5WHA8_P7u9usvUN0m1RM4MIKtoNUtBIZewgW2MabaHwrYdvN8xs22JOZe3hW853h39mjZJ_ADUevmVat6A9fIuIKBETlLcldBRUEb3tmI0iFOyaNwoaJSloDSXSslWu2PYkWkvKiIESqVYgTRVrzNzzs7Uh9AmVbd04Xflzz1_eK7lRpEZEbdoahLHIyMO3srFMVNYN46BmsG-4VKBsmV2LmVGtePLwbcHEoczDVx6-QrMNmkk7BGkaO1BrmtbMNZpVQs52oAqpYUZ0jWZrNHP2iLiUYkMU3SbRrBV2LcSMM9HuZxvRotlsQ-nMSMnpljDhhdffBRwNZjVP6SyI5njuT6velKNftJLS_CwJH6jvCdCsopJLNSsZ2QipDaO9BjtjmBb3mwB54ao3hfDG87PArq8XrkBWXniDGqI0KEQMAlFak64YB8_PsG22kiWgDQhr30wKz89CW_zQCsHEBjVEa-ThxW0rqK1H97bgKxFkYxWyQFKgWpYtB9tqwoEX1vait0a7s7rIFN2i6-zTzAtvrrNP6J4YA0qgz0Ib1Tppa-DQfepFVQcMKyzy8_8PFq-c1s7W-daWQx_5e__wX0iXQVmmqNuEYeaFmX7R7sO9YsJ0u-TR7bN0aKTIcy61UUBqDyd2rzFhOo9oXdrf3y4evvL3PZPzwZY4mBKn1YLQt4hXHIhom29izTaCcA-nreiCUNkFlPPxdQQDH57wFWVVVeGIb2Vt9AGo3IF6WUlhYG9czS9ElBxu9szGoHNq0DEMhOGJBpOqgrfXvPOi7o8x1woVUvIzatASDHzRmM8vCRBaoLu7377e2Bjl1KSOgTezPHRLlAu5fcEBkNIgrwkTc9pY1-53_zsx8XShYFnh8UK5cJV3YTJ3YXJs9I_PTMBBZHJ2nTicQSfJCSzx0_RckuxYg6TFWFIcRnG8jEdquc4-Pb40cAcbwtmfoFzp2qYFv3VZ2EOXF0x0tb7-P1lCvzLHXXhGE-8xh0mkk0ngKiAAP5yEakUHcyYmJ3VgWp4w4aAMRkxHR36dfXIlBzyLqs9LZmU7MutR_SlZXBUFfofs8xp478hkCZ9AZKK8qZmx0Ock7BgGwmBKmOCElD8kdKUZ51dEM3rFJX3SE7s8huxhG5-LvyMc-PEJfxT7yQ_5VSu-ia-EbpmAA-qE_1XdOSdgEYcJhCcm4lfpe8ZrJ2BNl778F0yjAx2mMQktoZ9Aisd2dEJiM7nRHN6E_wnUPddAPY1UMSyDxXh_3t5b0EPG-R_gdUQDb3LKG_nBB3i_dlny1DT6orOyRv7IIhYnrKSMliNWPjLkEfXnuuHjoPFziS3TQDyJbWEV0iT23S2AI4CamSt3iP_WHTA9nI6qVz2HPUQQQaHPXiYtOs_-rbF2ovv60V43ionNA1TT4sPEs5PRepSst7pxl8_CqFazHTxAtRLm3igvXA3Vu6rffbeMw_pFG6i7U9MKaVO6mlawf7SQNyc97YmkeVbMQH44l4w6lVCRlpu8BA4GftAxvOllvp7SSgrd1nYhs7MttlvOYbEnSUMUlzRZ0u-hjE4Sj4oIzbsz66-CnVhBtn48HD7OZ6o935EeTxKLBEf-Mp3Q39tzd7Z-nLKtoSaTnPq8uXXPMVAGpzqGtHxjP_QW3J-GgLYGDkZ9tsSnlz6wTRKHKIVFXJAx262yq3jcXmO4c2I5wQNWOMVKcFIW6HtO5k2tvT-PM9qkgxvQJylAtCyLeBGO0XvIYQY7Sclr4Ndu9GxOoIcakOPpgbjwCxwfT7aT6JMpRV6saw5X0yNx78NOj8nHI_R5yB3aAJ6cnORT4pfooOBV8Njt6vFBsSacu2Oki7BvzOIkGtkxek82SeNLxXagTo79lmkS8KMkgoIuOz2MBj1couWqU2VX67ZTFw9sE0o4Lwh9yithMQfDcIJ7I1kFK1nXRJSnO_PNJTtGKNmFXsInsWmIu8eYdOyQ53S_DwL3R2GPOzZ-McvUqXDS2BbkRhFm9KH6ZDjCuTV6qUb1tsnoaqWzGafwrouHF5zURUk8vBhUhdPDXdsXWbyxGOnpZRl88LLsoRVrUgF_mejy--t2xvs0qEbbc3lqUSUs0f-yRVg1zxuizNx_d-mnN89REuBgUb6rtW6pyKsQd1DlxDOfdLQNJvd0H2uandzqHSf2r7t3N9ej_UxvtKMkCIMw-Kua-CIL_b4avsjijmkzUcP3vO5x2RvC7Ir3t74f1VxvGz9Pf1ZDg_6mOVKC_SSk77Fejz5PIv0bIf49vf8b9XemhMLpZNBYeBKXyzDqLe6QUhyIO0-R9fv8x1H3LElEhzPATr8OoDEtcIQs5lmkufEGaYdcaxHEKYkjvCyXfi-Is8LDt_s0yZNo-sUlK-hcy3nSjdh1GQZMTgeEyEd5bvvk2hBl8tFcPiwCopGIxWmaFZEYucHPtCJ2RCdvXHd4NmA_uGcIVZ_GI9rbdEUYh9I9SoA9s9ZSAlp0Km01oNmue1UAgNgo0V6-fu_wuAX0eXVjm9Ya_dF2zsT6gcUi6PxMa6y1ig0TG-Ql_l994JH4FuSjHVf8dXf3HIMZ9CzV0xyhX-Qz7EAhs4UXpLey5SXakp17t6BJDaiALdkxqdDnr9_mF-VlWC7DJbmAy2AR4zSK0zS42F6meIHJIsbW06VxlGI_LiAsgwWmMY0guGCX2MexvwjSIAxTP5hHJS7ioPIBl4FPFuBFPtSE8bndwHOpNhfdg4rLIFrGAb7gpACuu6c5GAt4Rl2tnV58faEuu7cYRbvRXuRzpo0ehjHMcLg8flfdvY_4W6ovJejurQmrG_6C7ta_X7SKX_79hyL91HaX-J8BAAD__4SMI-Y">