<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/96789>96789</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            fatal error: error in backend: Cannot select: intrinsic %llvm.writecmrelease
        </td>
    </tr>

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

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

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

<pre>
    I'm using LLVM18.1 and When I add the following code am getting the following error:
redefine.h

```
static inline __attribute__((always_inline, overloadable)) void __writeCM(
 __CMAddr a, int v, const re_MemoryOrder mo) {
  switch(mo) {
    case memory_order_release:
      __builtin_writecm_release((const void *)a, v);
      break;
    default:
      __builtin_writecm_release((const void *)a, v);
 }
}
```

clang/include/clang/Basic/Builtins.def

`BUILTIN(__builtin_writecm_release ,"vvC*i"  , "Fnc")
`
clang/lib/CodeGen/CGBuiltin.cpp

```
case Builtin::BI__builtin_writecm_release: {
        Address arg0 = EmitPointerWithAlignment(E->getArg(0));
 EmitNonNullArgCheck(RValue::get(arg0.getPointer()),
 E->getArg(0)->getType(), E->getArg(0)->getExprLoc(), FD, 0);
        Value *arg1 = EmitScalarExpr(E->getArg(1));
        return RValue::get(Builder.CreateWriteCMRelease(arg0.getPointer(), arg1));
 }
```
llvm/include/llvm/IR/Intrinsics.td

```
CallInst *IRBuilderBase::CreateWriteCMRelease(Value *arg0, Value* arg1) {
  Module *M = BB->getParent()->getParent();
  Value *Ops[] = { arg0, arg1 };
 Type *Tys[] = { arg0->getType() };
  Function *Fn = Intrinsic::getDeclaration(M, Intrinsic::writecmrelease, Tys);
  CallInst *CI = CreateCall(Fn, Ops);
  return CI;
}
```
fatal error: error in backend: Cannot select: intrinsic %llvm.writecmrelease
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: /home/nidhin/redefine_sdk/llvm-project-18.1.0.src/build/bin/clang -I/home/nidhin/redefine_sdk/redefine/REDEFINE/riscv-gnu-toolchain-install/riscv32-unknown-elf/include -I/home/nidhin/redefine_sdk/redefine/include -Wall -target riscv32-unknown-elf -ffunction-sections -fdata-sections -Wuninitialized -fno-builtin -ffreestanding -march=rv32imf -fno-addrsig -O3 -c -o fib.o fib.c
1.      <eof> parser at end of file
2.      Code generation
3.      Running pass 'Function Pass Manager' on module 'fib.c'.
4.      Running pass 'RISC-V DAG->DAG Pattern Instruction Selection' on function '@__REDEFINE_main'
 #0 0x000055b1db53cfcf llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/home/nidhin/redefine_sdk/llvm-project-18.1.0.src/build/bin/clang+0x20eefcf)
 #1 0x000055b1db53b01c llvm::sys::CleanupOnSignal(unsigned long) (/home/nidhin/redefine_sdk/llvm-project-18.1.0.src/build/bin/clang+0x20ed01c)
 #2 0x000055b1db487f27 llvm::CrashRecoveryContext::HandleExit(int) (/home/nidhin/redefine_sdk/llvm-project-18.1.0.src/build/bin/clang+0x2039f27)
 #3 0x000055b1db532492 llvm::sys::Process::Exit(int, bool) (/home/nidhin/redefine_sdk/llvm-project-18.1.0.src/build/bin/clang+0x20e4492)
 #4 0x000055b1da12c0b6 (/home/nidhin/redefine_sdk/llvm-project-18.1.0.src/build/bin/clang+0xcde0b6)
 #5 0x000055b1db48f27a llvm::report_fatal_error(llvm::Twine const&, bool) (/home/nidhin/redefine_sdk/llvm-project-18.1.0.src/build/bin/clang+0x204127a)
 #6 0x000055b1dc5ef400 llvm::SelectionDAGISel::CannotYetSelect(llvm::SDNode*) (/home/nidhin/redefine_sdk/llvm-project-18.1.0.src/build/bin/clang+0x31a1400)
 #7 0x000055b1dc5f4df5 llvm::SelectionDAGISel::SelectCodeCommon(llvm::SDNode*, unsigned char const*, unsigned int) (/home/nidhin/redefine_sdk/llvm-project-18.1.0.src/build/bin/clang+0x31a6df5)
 #8 0x000055b1da5d9d21 llvm::RISCVDAGToDAGISel::Select(llvm::SDNode*) (/home/nidhin/redefine_sdk/llvm-project-18.1.0.src/build/bin/clang+0x118bd21)
 #9 0x000055b1dc5eba87 llvm::SelectionDAGISel::DoInstructionSelection() (/home/nidhin/redefine_sdk/llvm-project-18.1.0.src/build/bin/clang+0x319da87)
#10 0x000055b1dc5f97a9 llvm::SelectionDAGISel::CodeGenAndEmitDAG() (/home/nidhin/redefine_sdk/llvm-project-18.1.0.src/build/bin/clang+0x31ab7a9)
#11 0x000055b1dc5fc5fc llvm::SelectionDAGISel::SelectAllBasicBlocks(llvm::Function const&) (/home/nidhin/redefine_sdk/llvm-project-18.1.0.src/build/bin/clang+0x31ae5fc)
#12 0x000055b1dc5feb36 llvm::SelectionDAGISel::runOnMachineFunction(llvm::MachineFunction&) (.part.0) SelectionDAGISel.cpp:0:0
#13 0x000055b1daa541a0 llvm::MachineFunctionPass::runOnFunction(llvm::Function&) (.part.0) MachineFunctionPass.cpp:0:0
#14 0x000055b1dafec8da llvm::FPPassManager::runOnFunction(llvm::Function&) (/home/nidhin/redefine_sdk/llvm-project-18.1.0.src/build/bin/clang+0x1b9e8da)
#15 0x000055b1dafeca69 llvm::FPPassManager::runOnModule(llvm::Module&) (/home/nidhin/redefine_sdk/llvm-project-18.1.0.src/build/bin/clang+0x1b9ea69)
#16 0x000055b1dafedf30 llvm::legacy::PassManagerImpl::run(llvm::Module&) (/home/nidhin/redefine_sdk/llvm-project-18.1.0.src/build/bin/clang+0x1b9ff30)
#17 0x000055b1db79ea39 clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::HeaderSearchOptions const&, clang::CodeGenOptions const&, clang::TargetOptions const&, clang::LangOptions const&, 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*) (/home/nidhin/redefine_sdk/llvm-project-18.1.0.src/build/bin/clang+0x2350a39)
#18 0x000055b1dbd7a36e clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) (/home/nidhin/redefine_sdk/llvm-project-18.1.0.src/build/bin/clang+0x292c36e)
#19 0x000055b1dd980b79 clang::ParseAST(clang::Sema&, bool, bool) (/home/nidhin/redefine_sdk/llvm-project-18.1.0.src/build/bin/clang+0x4532b79)
#20 0x000055b1dbd79745 clang::CodeGenAction::ExecuteAction() (/home/nidhin/redefine_sdk/llvm-project-18.1.0.src/build/bin/clang+0x292b745)
#21 0x000055b1dc00cb21 clang::FrontendAction::Execute() (/home/nidhin/redefine_sdk/llvm-project-18.1.0.src/build/bin/clang+0x2bbeb21)
#22 0x000055b1dbf87a5b clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/home/nidhin/redefine_sdk/llvm-project-18.1.0.src/build/bin/clang+0x2b39a5b)
#23 0x000055b1dc0ecc7b clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/home/nidhin/redefine_sdk/llvm-project-18.1.0.src/build/bin/clang+0x2c9ec7b)
#24 0x000055b1da12dd8d cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/home/nidhin/redefine_sdk/llvm-project-18.1.0.src/build/bin/clang+0xcdfd8d)
#25 0x000055b1da12686d ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) driver.cpp:0:0
#26 0x000055b1dbdc27ed 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
#27 0x000055b1db487e17 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/home/nidhin/redefine_sdk/llvm-project-18.1.0.src/build/bin/clang+0x2039e17)
#28 0x000055b1dbdc2c8c 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
#29 0x000055b1dbd8939e clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&, bool) const (/home/nidhin/redefine_sdk/llvm-project-18.1.0.src/build/bin/clang+0x293b39e)
#30 0x000055b1dbd89d6d clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&, bool) const (/home/nidhin/redefine_sdk/llvm-project-18.1.0.src/build/bin/clang+0x293bd6d)
#31 0x000055b1dbd9423c clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&) (/home/nidhin/redefine_sdk/llvm-project-18.1.0.src/build/bin/clang+0x294623c)
#32 0x000055b1da12b171 clang_main(int, char**, llvm::ToolContext const&) (/home/nidhin/redefine_sdk/llvm-project-18.1.0.src/build/bin/clang+0xcdd171)
#33 0x000055b1da072ecb main (/home/nidhin/redefine_sdk/llvm-project-18.1.0.src/build/bin/clang+0xc24ecb)
#34 0x00007f6f26dcd083 __libc_start_main /build/glibc-LcI20x/glibc-2.31/csu/../csu/libc-start.c:342:3
#35 0x000055b1da12602e _start (/home/nidhin/redefine_sdk/llvm-project-18.1.0.src/build/bin/clang+0xcd802e)
clang: error: clang frontend command failed with exit code 70 (use -v to see invocation)
clang version 18.1.0rc (/home/nidhin/redefine_sdk/llvm-project-18.1.0.src/clang cfd63ba87bdda87f23e2cf920bcbc8c10acd4359)
</pre>
<img width="1px" height="1px" alt="" src="http://email.email.llvm.org/o/eJzkWk9zo7qW_zRko7ILhG1gkQWx436-lXSnkrzumpVLSAdbEyE8knCS-fRTEthGxOncO_N8Z_FS3Rj09_zO_yMgWvONBLgOpjfBdHFFGrOt1bXkbMtl1QhBXl6IuCpq9n69CnBSoUZzuUF3dz_vo3QcISIZ-rUFiVaIMIbMFlBZC1G_2lG0ZoBIhTZgjH32e0GpWgVxHoSLIMwVMCi5hPG2fe6us7D75x61IYZTxKXgEtB6TYxRvGgMrNcBTgOcEvFK3vW6HRDgOar3oERNGCkEBDgLcIb2NWdovX5V3MD83s5za6P1en6fM6YQsRO5NGhvb2gttUEK1vdQ1er9h2KgUFXblYLkppuL9Cs3dBvg9EMPQpRoQJWbva7t9LUCAUTDETxyf-t10XBhuGxpo9VxnMPWEuKoD3Ae4MzRubeo4pv-OoUC8uK1MShJI8y_fr8gWXSCOt74EmuvVBC5CfCSSyoaBgFeHlpuiObU_raU6DGDcqAAN_9c3T2vvgc4_ZRgFOB5gPF-Pw9wzgOMkW1BAcZLSQOMLc1H6jyKBC8CvJzXDL6BtHffOkrGdLf7jSY6mXZDLVvj_Gb1OT_j3NcI-2dVDbRGRG1CFMQLdFtx81BzaUD94mabC76RFUgT4PR2FMS3GzC52gQ4DVtFPknBzvxey--NELnazLdAXwKcPv4kooGWuA3YZexW4w0cdnFidivh-WGlDxt1Dc_vOziMn38-7PZtp-5qehq5XNhr-FFJEXLkWdUiahMdOfBEiSDKrvMBdzTE3f0pMI2S6CNeKx8GajxXQAz8ag3-8ajjn7BjbkXyYa_PFFyIfeVpdtewerQXaRSXmlM9Nuw32jQnQqystQU4Xz12ZN90HiLOP6G_z8DQ0t0yAOcHAH2lu69ZI9zoe8frm5uOtw9EtUp2kmK_qcft434_drqNF26lILlBBwpaUSaL0yyrOHbO8_u5OR-0y5-Mlo2khtfSrrCUbuqRp0dJL4AKoogdF-D03tIxGNTZ49G9zZElxwPXF8F85XZq2W47ApwupZ1mkXvTOt2br45tnylKSQwRx6DX3iAuUUHoC0hm2-ZEytogDQKoddY2CLUwUICnVrHGAyRu5Ye72_zpFummqLhBBBXNBinY1cogU6OtMTtt2YCXAV5uuNk2xZjW1UlV7c9op-r_tLviJde6AR3gpQvunWK72E0V0VtHsFGEOj7uFOxUTUFrYEjXjWqb7UyidU05McCQaiTSVPGdGbckPxlCXxBrqt0xJoXjIMweVL1RpLK60Vjfp53rxMttXVnbavOSAC8P2cJas5cBgpHNS8bhWCsbV6xHZvbXTXNeH41WX694eAzw8vF2cbtcfb-1rVzT_Wgjm5Gpa0G3hMsRl9o4FWl7Yzxq5IusX-UIRHnyDH911-O0X0QINDJEbcCgM1ugUVl2VjLS4H41GpWMGNJ7_tVILrnhRPD_BoZGpaxHXbSyCygAbYhkNi8bVUTRbRAv1D7GvCrbwYQxpfkGjX7EaETRqEYlL8btlbYSjKwEg3gOdRnEt2hHlAaFiEEgGapLVHLRaSy2I23QRRuQ0Jmu64ltz2MjpaVkR7RGAU6OXuDBNtwTSTbWXSeolqg6-LWkpQQnnYpNzq30uHqaj36iRf7Nep5F_g09EGNASWRtXzXtNk_OAJ07cXuUJy-UBJNwvT6oxLoiVozJIUbgOEThWxiG4XRaRKyYxrSkJXJ25hyRftftzYPi0jgreG5NKT0NUuR1XWujgFQBnnXJqPON1kX-S20hwDfhGw4BSloekySLIxrgKMKInsMxF0Bks_shn_hGEusoG-lKCoZEbde_JNUsjKhHNfaonqRJiZMe1XPrvx6B2qLgfV5LA2-m7fkHkUzA7Ru3Ue_S3I6zEice3fGA23iS4fNa41xt-9Cndo6KuhaX5fZkkmGP6kmfahJhGhazS-1PGYTFzNt-OhB2iRPSY1obAdcu7K7bsNs3sudXW0K6GqczsotzcBLhhHgQZn0IdArlJAx7EI5-aJF_Wz2B6LTYZQn_Aabt9lA9Lb7XNgvNLwgkjkg0CUMPSOIDKSesnH4JpG21YWBeV5VL3s4imaOjT6Fbog5C83sua7RxRGasnHqYU0_9pyxjOOphtqHm5yL_9lyfAf23Cy2K0oLhyAOQDbSvIGnypdAWdS9S9gJlelHuZ4ykJ5dp41M40LgsIdnXptPW-blkttRc5N8uTTcpEpJ5dEcDuu2_P2kpuRDuuORG1PRFeyp0zJBODu2SqGBaUg8VHqCCIp59iUo18oe8J3TLJRwAeKg-9B1gjXdEmbF1QWi4tDu3ifPQ_T_S5wVYQqaTiPQd7WAjm2b2SDxL22-JOrPeebr8EFoCTVk_hi0f7NRDwvuXKbqIIykySBnxpD8doiCz7E-gaI8kfIl3TZdGQGa-Vc4GCFgZ9_VDwIbQ9y4HO2FZVbuTKv9_4CjLOPRweHG4SDIgcYbaKW3OWHFz0x44_GjMrrGBqNe94GQja2041bdy4wpRlxr1hvwDCAP1BLZG_LFrq8t-FtUb2nnbL0Y9u8r2i0F3RG7ODem5GKO43DxC6TcfBJEPFuyYkHcW05-ykkY1mu_hEcq5NA9GBfH81L0vO9-w5AKe3rWBKohv7RLasLankfy_GljvBjNtXbdzBzjrQ3XXm9Sd0a8ZCDDwxcT4ttvzI6R5LXVT2fr4kvkEjqchiX0j8hKigiUknsHvCOxVXs-KSC3cOcA_JR9oZf70fCjWLmpQOMM0noGHycuRWJaGReIZ1ANRGvKnZ5_iJ6iIV1VcvLqYTGNcJJ48cDiQR5ZMpmfss7OBrqYE2hjI_4akDme4SCZTj2I_OQpDWuCoT_FSWT04mm2f5AsTWxRQ9NJnS6x_2FCmCZkWPnurHRegbL5MJIXzHP4c3WV1vYgzMi08QLHPfaA08QB1pJ9w7WtKPsL4gPuyjohmQBMfyPBggrGUIUqj7riuF6dzpci7DRrx3C8tO-86LDf3NWeXxUNZyVLmwZkO4MzSGUMHYcyjZ-dZ-vVkRYT4CdTUXYZyBtsgeto1Oh_rlRBM8T2os7krnvnuheIEWPu6-LTu4eR0rRyPu5fJ7Xul23YIJUIUhL6sS2kpPelRu3enU_NoXlcVkWxo9GdleQyqtcsZiPDC6SlVOIbR44T1mr69RVH7UNhqy4ZcbmlyXPQG24a1UYQbfegeLEeEsDZSq16_HZKfQoJTppbnbkqAE0GqwqbYyYlVOD0cp_5RF-flkQwPPyH6c4efj418IiWId4-dvxfdZc9HIfKKfZwOVY2mFP07q8qg3vxUJzKfcWkWZ_Ap45zfJh8i64GbnpMfTLQDPsvdfzM0Hxy9HrFdJuGIizjz0rvB6xqWZmzG_ip__qgL_Tlz_qiLO67NZ1XLB1d91Icd4VYVuuP9P8vPTmn-Xq6ymRewBi-PWDbB8afmuujdewnGmcziM2n8jVy9YDo8meHYO1XzX2eRCBdR0qXDh0zmgMO5m7xzFl-H9YvlLixKvCTZf7NFwgQDLZAl_mI04AlQLx08vqdKylmJZ4yyMI3Rei14YT02UWbdEXRcdGP7Rnd0hcO34yMex5HdSjcBXo7Hx1vX6dYZ0yDO4wm219P2H9K3EANqN76cINIQnzzdQc1PX5-0H0KUXcGBaKfwJeECGHrlZovgjZv2C84ktHQ2GtBoj0yNNADiveS_vwvag9K8lqilU9H_K8R2VVqyWVyQNCkYI2lS4hgwLTMcFrSgKY1CQtkkntr694pdxyyLM3IF11ESZZMoxSm-2l4zYGVIw8l0kqazFFOKSQhZFuKMEJstXfFrHOJJOMOzaBZFOBqzpJyW5YzN8DSEsJwEkxAqwsXYfYpTq82V-1bmOpslaXYlSAFCuy9pMZbwilxngHEwXVypawexaDY6mISCa6NPqxhuBFxf4gOhq0aJ6__9F0AtsP01_p8AAAD__57rfnY">