JIT: Assertion failed 'unreached' in 'TestHFAandHVA:ReturnVector2WrapperPromoted():TestHFAandHVA+Vector2Wrapper' during 'Lowering nodeinfo'

[AndyAyersMS]

https://dev.azure.com/dnceng-public/public/_build/results?buildId=961276&view=ms.vss-test-web.build-test-results-tab

/datadisks/disk1/work/A612091A/w/9D2208D0/e/JIT/Directed/Directed_3/IL-CG2/structreturn.dll
-o:/datadisks/disk1/work/A612091A/w/9D2208D0/e/JIT/Directed/Directed_3/structreturn.dll
--targetarch:x64
--targetos:linux
--verify-type-and-field-layout
--method-layout:random
-r:/datadisks/disk1/work/A612091A/p/System.*.dll
-r:/datadisks/disk1/work/A612091A/p/Microsoft.*.dll
-r:/datadisks/disk1/work/A612091A/p/xunit.*.dll
-r:/datadisks/disk1/work/A612091A/p/mscorlib.dll
-r:/datadisks/disk1/work/A612091A/p/netstandard.dll
Running CrossGen2:  /datadisks/disk1/work/A612091A/p/crossgen2/crossgen2 @/datadisks/disk1/work/A612091A/w/9D2208D0/e/JIT/Directed/Directed_3/structreturn.dll.rsp   -r:/datadisks/disk1/work/A612091A/w/9D2208D0/e/JIT/Directed/Directed_3/IL-CG2/*.dll
DOTNET_DbgEnableMiniDump is set and the createdump binary does not exist: /datadisks/disk1/work/A612091A/p/crossgen2/createdump
/__w/1/s/src/coreclr/jit/lower.cpp:5352
Assertion failed 'unreached' in 'TestHFAandHVA:ReturnVector2WrapperPromoted():TestHFAandHVA+Vector2Wrapper' during 'Lowering nodeinfo' (IL size 22; hash 0x3f61163f; FullOpts)

First seen on Feb-18.

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[AndyAyersMS]

fyi @dotnet/jit-contrib

[EgorBo]

HFA/HVA cc @jakobbotsch

[jakobbotsch]

This looks introduced by #112308