<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/117606>117606</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            Crash during nvptx codegen/instruction selection
        </td>
    </tr>

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

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

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

<pre>
    https://godbolt.org/z/fGWzdfvM1


```
LLVM ERROR: PTX does not support "atomic" for orderings different than"NotAtomic" or "Monotonic" for sm_60 or older, but order is: "seq_cst".
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.
Stack dump:
0.      Program arguments: /opt/compiler-explorer/clang-assertions-trunk/bin/llc -o /app/output.s -x86-asm-syntax=intel <source>
1.      Running pass 'Function Pass Manager' on module '<source>'.
2.      Running pass 'NVPTX DAG->DAG Pattern Instruction Selection' on function '@diffe_ZL9atomicAddPdd'
 #0 0x0000000003c15cd8 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/llc+0x3c15cd8)
 #1 0x0000000003c136cc SignalHandler(int) Signals.cpp:0:0
 #2 0x00007cc624442520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
 #3 0x00007cc6244969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)
 #4 0x00007cc624442476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)
 #5 0x00007cc6244287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)
 #6 0x0000000000758499 (/opt/compiler-explorer/clang-assertions-trunk/bin/llc+0x758499)
 #7 0x000000000196156b llvm::NVPTXDAGToDAGISel::insertMemoryInstructionFence(llvm::SDLoc, llvm::SDValue&, llvm::MemSDNode*) (/opt/compiler-explorer/clang-assertions-trunk/bin/llc+0x196156b)
 #8 0x00000000019631c5 llvm::NVPTXDAGToDAGISel::tryLoad(llvm::SDNode*) (/opt/compiler-explorer/clang-assertions-trunk/bin/llc+0x19631c5)
 #9 0x00000000019670e3 llvm::NVPTXDAGToDAGISel::Select(llvm::SDNode*) (/opt/compiler-explorer/clang-assertions-trunk/bin/llc+0x19670e3)
#10 0x00000000039bc70b llvm::SelectionDAGISel::DoInstructionSelection() (/opt/compiler-explorer/clang-assertions-trunk/bin/llc+0x39bc70b)
#11 0x00000000039cba3a llvm::SelectionDAGISel::CodeGenAndEmitDAG() (/opt/compiler-explorer/clang-assertions-trunk/bin/llc+0x39cba3a)
#12 0x00000000039cf022 llvm::SelectionDAGISel::SelectAllBasicBlocks(llvm::Function const&) (/opt/compiler-explorer/clang-assertions-trunk/bin/llc+0x39cf022)
#13 0x00000000039d0340 llvm::SelectionDAGISel::runOnMachineFunction(llvm::MachineFunction&) (/opt/compiler-explorer/clang-assertions-trunk/bin/llc+0x39d0340)
#14 0x00000000019681c3 llvm::NVPTXDAGToDAGISel::runOnMachineFunction(llvm::MachineFunction&) (/opt/compiler-explorer/clang-assertions-trunk/bin/llc+0x19681c3)
#15 0x00000000039c0c0f llvm::SelectionDAGISelLegacy::runOnMachineFunction(llvm::MachineFunction&) (/opt/compiler-explorer/clang-assertions-trunk/bin/llc+0x39c0c0f)
#16 0x0000000002b7a219 llvm::MachineFunctionPass::runOnFunction(llvm::Function&) (.part.0) MachineFunctionPass.cpp:0:0
#17 0x0000000003180250 llvm::FPPassManager::runOnFunction(llvm::Function&) (/opt/compiler-explorer/clang-assertions-trunk/bin/llc+0x3180250)
#18 0x0000000003180601 llvm::FPPassManager::runOnModule(llvm::Module&) (/opt/compiler-explorer/clang-assertions-trunk/bin/llc+0x3180601)
#19 0x0000000003180eb7 llvm::legacy::PassManagerImpl::run(llvm::Module&) (/opt/compiler-explorer/clang-assertions-trunk/bin/llc+0x3180eb7)
#20 0x000000000086bed8 compileModule(char**, llvm::LLVMContext&) llc.cpp:0:0
#21 0x000000000075fbbe main (/opt/compiler-explorer/clang-assertions-trunk/bin/llc+0x75fbbe)
#22 0x00007cc624429d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#23 0x00007cc624429e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#24 0x000000000086281e _start (/opt/compiler-explorer/clang-assertions-trunk/bin/llc+0x86281e)
```

However the function in question is marked sm_80:

```

; Function Attrs: mustprogress nofree noinline norecurse nounwind willreturn
define internal fastcc double @diffe_ZL9atomicAddPdd(ptr nocapture noundef %address, ptr nocapture readonly %"address'", double noundef %val) unnamed_addr #143 {
entry:
  %0 = atomicrmw fadd ptr %address, double %val seq_cst, align 8
 %1 = load atomic double, ptr %"address'" seq_cst, align 8
  ret double %1
}

attributes #143 = { mustprogress nofree noinline norecurse nounwind willreturn "frame-pointer"="all" "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="sm_80" "target-features"="+ptx75,+sm_80" }

```
</pre>
<img width="1px" height="1px" alt="" src="http://email.email.llvm.org/o/eJzMmF1v3Coaxz8NuUEeYfx-MRdOJpNTKemJmqq72psRBuxhg8EHcF766VfYnrFn2m4bnezZU00Vy4b_8_vDY8wDsVY0ivM1SC5Bsrkgvdtrs362rbbcXlSava73znUWRCXAW4C3jWaVlm6lTQPw9ivA2_rmH19Z_XQXAlROvxRNP1Te3n65g9efPv3-CUQlvP_8T8g0t1BpB23fddo4CDAmTreCAoxhrQ3UhnEjVGMhE3XNDVcOuj1RAOOP2pXHttr4vndaaafV3N22uxT5h1oybgC-glXvRlEovBPfy_I_dtQ6gPEKoPL-9rp8uIa2r1rhIIFV30DDBzqn4dkICLfvqxXVLcBbKZ8Of4LO6H9z6gDeCmt7bgHeQqIYFIrKnnHo9hxSQ-weVoQ-OkMo97EfHKGPkPVt50OgEq0AKu6NbgxpITFN33LlJuyt7rw-1W0nJDcBf-mkNt7klkqimoBYy40TWtnAmV49ArythBoIKQy0lyBd54V61_VuZWHwkqcBsW1gX5UjLyDaCOW4hCC6sro3lIPoGqAy9FSfeqWEamBHrIUAZ9teUR8M3vsbd0SRxrNkUCvYatZL7ludKOHMe8bfU_v4xafHprwJQHS9KW_gPXGOGwU_KOtMP0Z64JIPV1OY-oDgA8VoSJjdv26LMaNKxu4Z84-QH74IQfSCDv8iGiaU5XCYw6gEUWlf7Xhxb4Ryw8R89tMEcD43MuR5p60znLQApz69hHIAFxDg_E_OEMCX6GXCAriYoMMz6CilFD6IRhH5G1FMevF8Yhhv2xXtfDah4f-ogieVjNIUx3GME4wmZCkqgLcvebpL40AK1b8EjerHB3Rl9SodwIYuM1Z0KlikRU1h5_aGE7Z7FFK-TX3oP6vH57hxlsLGDvbeih1n6SycnArjPKsjSKpxIXqD7NBxlk2Xk4SyJI-Ld8uIUW2OlS1jhUUaJmm1yOLhPdqUN5_1prz58MDleFsoH-aOt9q8Lt6oLVdnCf6wudXU5_Xy1hciez7l-3z_jrcPm4-acYDLd3wFJk-z4_zMcRTS5OeOnXm91YSdmfuf4HqgGbc4w80Qj36OOy5tfwWt5xlp_fJyuigWFc3QMp2OK-4J7EYvcmixKOfvuRKOLDPp6UpY0IpE5KekV5rxG65Kxa5b4TblzXtDDhgzJD6DrBHGP4Uc75ZSXhIr6KXU9NGeZMLxU0u18tuW9H0teMjZQnRqgaEoRj-1YHr1u7ojdC8UP9CeWPjm2ft6GChnD_HZO5iH9Bfewf-viQlzNpGc5RKiqP4vE3HLG0Jf_w5OJtbZycn3EVcZwWEBfwjj95MLG9_l_xZ81RHjVj4H4Hf0zvZEHurkQxqFOcLJMs-3977fYVv7Zpx3GccRah7H_Bw5ReEvIN8Nu_HT-Z9uvTduisIZtzjH5VW2wJWLhF2Af2i7-X38S6B5lR2h8ckHEeVpxVkOpwDHgaR7YoYPc3m6JfIF75VWjr8cVmkp6be5h8OzDWNdVRy2RKj32zV6ydnVWQGAC1a8sQAYusyC0bkgjxHc7XyfnXXEuN3Czi-H4ItFHMdnM4HzkMNR_L2GaRSdQi4OLgAqf9PP_ImboXA_1plCwT96bsdrC1tiHjmDtt3laKzfv9UB0SU8fr9L58xQzbe9dZ0v87m1UOnacA6VFkoK5S8Mp72x_qpXz0Ix-CykNNz1RgFUMl77Zr5UN74iqol1lEKm-8oX3T8shPPOGag0JZ3rzSjOeA0BTghjnsQn82kbX89pJV99I4DxsV0G_Jbh6hBzIfVEpM_7XinScrbzPYY6No4gyC4BKrly5nUcLeg7IAiiDRxJTfsMa8LYQHHKdXA3RIDHE5wrSKRoFMzH3XcSDmpSEzZJTh0P1r7j4wdi0HC3iDqccGWbcVKJc0ZUveP26C3aeH9_YmIhwLg2pOVBp4ep9UMcbTytlB4TYNwKFfhlUwZPnDptgmfB3P7YEE3NlA6cIV0nVBO0ZNHAGV_HDW2sI_Qx6Ix2o1LV1zU3gRVf-bF5PrV1xDTcBbTrj4_GnD95XHPic8Ye2wB82bmXLAH4CuDLucdhFI9vygVbR6yICnLB12EW4SRFOMku9muWp1mNUlRFVZEltCIZTVFUFTVOUc0jciHWGOE4DHES5nEcZqskj2NKqiJnMUFJjkCMeEuEXPlFeqVNczGcz63DMEtReiFJxaUdTkAxVvwZDk89e7K5MOvhaK_qGwtiJIV1dpZxwkm-vhqO9FhvhGqgeurcC6Sa8Yb7VUYsjq7sYbd20Rt5fqz6hkPFiftpjf8TAAD__5D4sNY">