<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/71892>71892</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            Assertion `Info && "Invalid name for a VFABI variant."' failed.
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            crash-on-valid
      </td>
    </tr>

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

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

<pre>
    this test is a reduced version of `llvm/test/Transforms/LoopVectorize/scalarize-masked-call.ll`

```llvm
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"

define void @cond_call() {
entry:
  br label %for.body

for.body: ; preds = %for.body, %entry
  %foo.ret = call i64 @foo()
  br label %for.body
}

declare i64 @foo() #0

attributes #0 = { "vector-function-abi-variant"="_ZGV_LLVM_M4v_foo(vector_foo)" }
```

I get:

```
regehr@ohm:~/reduce$ /home/regehr/llvm-project/for-alive/bin/opt -O2 reduced.ll -o /dev/null
opt: /home/regehr/llvm-project/llvm/lib/Analysis/VectorUtils.cpp:1473: void llvm::VFABI::getVectorVariantNames(const llvm::CallInst&, llvm::SmallVectorImpl<std::__cxx11::basic_string<char> >&): Assertion `Info && "Invalid name for a VFABI variant."' failed.
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.
Stack dump:
0.      Program arguments: /home/regehr/llvm-project/for-alive/bin/opt -O2 reduced.ll -o /dev/null
 #0 0x00007fd3a2ffe950 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/home/regehr/llvm-project/for-alive/bin/../lib/libLLVMSupport.so.18git+0x1fe950)
 #1 0x00007fd3a2ffb95f llvm::sys::RunSignalHandlers() (/home/regehr/llvm-project/for-alive/bin/../lib/libLLVMSupport.so.18git+0x1fb95f)
 #2 0x00007fd3a2ffbab5 SignalHandler(int) Signals.cpp:0:0
 #3 0x00007fd3a2642520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
 #4 0x00007fd3a26969fc __pthread_kill_implementation ./nptl/pthread_kill.c:44:76
 #5 0x00007fd3a26969fc __pthread_kill_internal ./nptl/pthread_kill.c:78:10
 #6 0x00007fd3a26969fc pthread_kill ./nptl/pthread_kill.c:89:10
 #7 0x00007fd3a2642476 gsignal ./signal/../sysdeps/posix/raise.c:27:6
 #8 0x00007fd3a26287f3 abort ./stdlib/abort.c:81:7
 #9 0x00007fd3a262871b _nl_load_domain ./intl/loadmsgcat.c:1177:9
#10 0x00007fd3a2639e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)
#11 0x00007fd3a3d060bf llvm::VFABI::getVectorVariantNames(llvm::CallInst const&, llvm::SmallVectorImpl<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>>&) (/home/regehr/llvm-project/for-alive/bin/../lib/libLLVMAnalysis.so.18git+0x5060bf)
#12 0x00007fd3a585f086 llvm::VFDatabase::getVFABIMappings(llvm::CallInst const&, llvm::SmallVectorImpl<llvm::VFInfo>&) (/home/regehr/llvm-project/for-alive/bin/../lib/libLLVMVectorize.so.18git+0x5f086)
#13 0x00007fd3a586560a llvm::LoopVectorizationLegality::canVectorizeInstrs() (/home/regehr/llvm-project/for-alive/bin/../lib/libLLVMVectorize.so.18git+0x6560a)
#14 0x00007fd3a58667e7 llvm::LoopVectorizationLegality::canVectorize(bool) (/home/regehr/llvm-project/for-alive/bin/../lib/libLLVMVectorize.so.18git+0x667e7)
#15 0x00007fd3a58c8529 llvm::LoopVectorizePass::processLoop(llvm::Loop*) (/home/regehr/llvm-project/for-alive/bin/../lib/libLLVMVectorize.so.18git+0xc8529)
#16 0x00007fd3a58cc771 llvm::LoopVectorizePass::runImpl(llvm::Function&, llvm::ScalarEvolution&, llvm::LoopInfo&, llvm::TargetTransformInfo&, llvm::DominatorTree&, llvm::BlockFrequencyInfo*, llvm::TargetLibraryInfo*, llvm::DemandedBits&, llvm::AssumptionCache&, llvm::LoopAccessInfoManager&, llvm::OptimizationRemarkEmitter&, llvm::ProfileSummaryInfo*) (/home/regehr/llvm-project/for-alive/bin/../lib/libLLVMVectorize.so.18git+0xcc771)
#17 0x00007fd3a58cd670 llvm::LoopVectorizePass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/home/regehr/llvm-project/for-alive/bin/../lib/libLLVMVectorize.so.18git+0xcd670)
#18 0x00007fd3a62b7ec6 llvm::detail::PassModel<llvm::Function, llvm::LoopVectorizePass, llvm::PreservedAnalyses, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/home/regehr/llvm-project/for-alive/bin/../lib/libLLVMPasses.so.18git+0xb7ec6)
#19 0x00007fd3aa782fb1 llvm::detail::PassModel<llvm::Function, llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>, llvm::PreservedAnalyses, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/home/regehr/llvm-project/for-alive/bin/../lib/libLLVMAMDGPUCodeGen.so.18git+0x382fb1)
#20 0x00007fd3a3525647 llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/home/regehr/llvm-project/for-alive/bin/../lib/libLLVMCore.so.18git+0x325647)
#21 0x00007fd3aa762746 llvm::detail::PassModel<llvm::Module, llvm::ModuleToFunctionPassAdaptor, llvm::PreservedAnalyses, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/home/regehr/llvm-project/for-alive/bin/../lib/libLLVMAMDGPUCodeGen.so.18git+0x362746)
#22 0x00007fd3a35236c1 llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/home/regehr/llvm-project/for-alive/bin/../lib/libLLVMCore.so.18git+0x3236c1)
#23 0x0000557f58a33034 llvm::runPassPipeline(llvm::StringRef, llvm::Module&, llvm::TargetMachine*, llvm::TargetLibraryInfoImpl*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::StringRef, llvm::ArrayRef<llvm::PassPlugin>, llvm::opt_tool::OutputKind, llvm::opt_tool::VerifierKind, bool, bool, bool, bool, bool, bool, bool) (/home/regehr/llvm-project/for-alive/bin/opt+0x31034)
#24 0x0000557f58a2109c main (/home/regehr/llvm-project/for-alive/bin/opt+0x1f09c)
#25 0x00007fd3a2629d90 __libc_start_call_main ./csu/../sysdeps/nptl/libc_start_call_main.h:58:16
#26 0x00007fd3a2629e40 call_init ./csu/../csu/libc-start.c:128:20
#27 0x00007fd3a2629e40 __libc_start_main ./csu/../csu/libc-start.c:379:5
#28 0x0000557f58a24f95 _start (/home/regehr/llvm-project/for-alive/bin/opt+0x22f95)
Aborted (core dumped)
regehr@ohm:~/reduce$ 
```

</pre>
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