<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/72806>72806</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            fatal error in llvm::DAGTypeLegalizer::ExpandIntRes_FP_TO_UINT for AArch64
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            backend:AArch64,
            crash-on-valid
      </td>
    </tr>

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

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

<pre>
    in the tree we have `test/CodeGen/Generic/pr24662.ll`

here's a small variation of it that crashes llc for AArch64:
```
regehr@ohm:~/test/assertion-fail$ cat test-755110586119.ll
define signext i60 @PR24662b(float %0) {
  %2 = fptoui float %0 to i670010
  %3 = trunc i670010 %2 to i60
  ret i60 %3
}
regehr@ohm:~/test/assertion-fail$ llc --march=aarch64 test-755110586119.ll
LLVM ERROR: Unsupported library call operation!
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.
Stack dump:
0.      Program arguments: llc --march=aarch64 test-755110586119.ll
1.      Running pass 'Function Pass Manager' on module 'test-755110586119.ll'.
2.      Running pass 'AArch64 Instruction Selection' on function '@PR24662b'
 #0 0x0000561a707eaa58 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/home/regehr/clang+llvm-17.0.4-x86_64-linux-gnu-ubuntu-22.04/bin/llc+0x2465a58)
 #1 0x0000561a707e8a0e llvm::sys::RunSignalHandlers() (/home/regehr/clang+llvm-17.0.4-x86_64-linux-gnu-ubuntu-22.04/bin/llc+0x2463a0e)
 #2 0x0000561a707eb0e8 SignalHandler(int) Signals.cpp:0:0
 #3 0x00007f1ecc842520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
 #4 0x00007f1ecc8969fc __pthread_kill_implementation ./nptl/pthread_kill.c:44:76
 #5 0x00007f1ecc8969fc __pthread_kill_internal ./nptl/pthread_kill.c:78:10
 #6 0x00007f1ecc8969fc pthread_kill ./nptl/pthread_kill.c:89:10
 #7 0x00007f1ecc842476 gsignal ./signal/../sysdeps/posix/raise.c:27:6
 #8 0x00007f1ecc8287f3 abort ./stdlib/abort.c:81:7
 #9 0x0000561a7076e945 llvm::report_fatal_error(llvm::Twine const&, bool) (/home/regehr/clang+llvm-17.0.4-x86_64-linux-gnu-ubuntu-22.04/bin/llc+0x23e9945)
#10 0x0000561a7076e786 (/home/regehr/clang+llvm-17.0.4-x86_64-linux-gnu-ubuntu-22.04/bin/llc+0x23e9786)
#11 0x0000561a7065defc (/home/regehr/clang+llvm-17.0.4-x86_64-linux-gnu-ubuntu-22.04/bin/llc+0x22d8efc)
#12 0x0000561a70713f4a llvm::DAGTypeLegalizer::ExpandIntRes_FP_TO_UINT(llvm::SDNode*, llvm::SDValue&, llvm::SDValue&) (/home/regehr/clang+llvm-17.0.4-x86_64-linux-gnu-ubuntu-22.04/bin/llc+0x238ef4a)
#13 0x0000561a707113ea llvm::DAGTypeLegalizer::ExpandIntegerResult(llvm::SDNode*, unsigned int) (/home/regehr/clang+llvm-17.0.4-x86_64-linux-gnu-ubuntu-22.04/bin/llc+0x238c3ea)
#14 0x0000561a706acdaf llvm::DAGTypeLegalizer::run() (/home/regehr/clang+llvm-17.0.4-x86_64-linux-gnu-ubuntu-22.04/bin/llc+0x2327daf)
#15 0x0000561a706b0627 llvm::SelectionDAG::LegalizeTypes() (/home/regehr/clang+llvm-17.0.4-x86_64-linux-gnu-ubuntu-22.04/bin/llc+0x232b627)
#16 0x0000561a70648011 llvm::SelectionDAGISel::CodeGenAndEmitDAG() (/home/regehr/clang+llvm-17.0.4-x86_64-linux-gnu-ubuntu-22.04/bin/llc+0x22c3011)
#17 0x0000561a706478e2 llvm::SelectionDAGISel::SelectAllBasicBlocks(llvm::Function const&) (/home/regehr/clang+llvm-17.0.4-x86_64-linux-gnu-ubuntu-22.04/bin/llc+0x22c28e2)
#18 0x0000561a70645589 llvm::SelectionDAGISel::runOnMachineFunction(llvm::MachineFunction&) (/home/regehr/clang+llvm-17.0.4-x86_64-linux-gnu-ubuntu-22.04/bin/llc+0x22c0589)
#19 0x0000561a6fe7acaf llvm::MachineFunctionPass::runOnFunction(llvm::Function&) (/home/regehr/clang+llvm-17.0.4-x86_64-linux-gnu-ubuntu-22.04/bin/llc+0x1af5caf)
#20 0x0000561a7026bec6 llvm::FPPassManager::runOnFunction(llvm::Function&) (/home/regehr/clang+llvm-17.0.4-x86_64-linux-gnu-ubuntu-22.04/bin/llc+0x1ee6ec6)
#21 0x0000561a702730e3 llvm::FPPassManager::runOnModule(llvm::Module&) (/home/regehr/clang+llvm-17.0.4-x86_64-linux-gnu-ubuntu-22.04/bin/llc+0x1eee0e3)
#22 0x0000561a7026cada llvm::legacy::PassManagerImpl::run(llvm::Module&) (/home/regehr/clang+llvm-17.0.4-x86_64-linux-gnu-ubuntu-22.04/bin/llc+0x1ee7ada)
#23 0x0000561a6e92b028 main (/home/regehr/clang+llvm-17.0.4-x86_64-linux-gnu-ubuntu-22.04/bin/llc+0x5a6028)
#24 0x00007f1ecc829d90 __libc_start_call_main ./csu/../sysdeps/nptl/libc_start_call_main.h:58:16
#25 0x00007f1ecc829e40 call_init ./csu/../csu/libc-start.c:128:20
#26 0x00007f1ecc829e40 __libc_start_main ./csu/../csu/libc-start.c:379:5
#27 0x0000561a6e925f95 _start (/home/regehr/clang+llvm-17.0.4-x86_64-linux-gnu-ubuntu-22.04/bin/llc+0x5a0f95)
Aborted (core dumped)
regehr@ohm:~/test/assertion-fail$ 
```

cc @hatsunespica
</pre>
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