Assertion failed '(igInLoop->igLoopBackEdge == nullptr) || (igInLoop->igLoopBackEdge == igLoopHeader)' #82729
Description
Libraries pgo, possibly recent regression in weekend runs (I had clean private runs on Friday, but this is PGO so may not always be testing the exact same codegen)
export DOTNET_TieredCompilation=1
export DOTNET_DbgEnableMiniDump=1
export DOTNET_EnableCrashReport=1
export DOTNET_DbgMiniDumpName=$HELIX_DUMP_FOLDER/coredump.%d.dmp
export DOTNET_ReadyToRun=0
export DOTNET_TC_QuickJitForLoops=1
export DOTNET_TieredPGO=1
export DOTNET_JitRandomGuardedDevirtualization=1
export DOTNET_JitRandomEdgeCounts=1
export DOTNET_JitRandomlyCollect64BitCounts=1
dotnet exec --runtimeconfig System.Runtime.Serialization.Xml.Tests.runtimeconfig.json --depsfile System.Runtime.Serialization.Xml.Tests.deps.json xunit.console.dll System.Runtime.Serialization.Xml.Tests.dll -xml testResults.xml -nologo -nocolor -notrait category=IgnoreForCI -notrait category=OuterLoop -notrait category=failing
popd
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/root/helix/work/workitem/e /root/helix/work/workitem/e
Discovering: System.Runtime.Serialization.Xml.Tests (method display = ClassAndMethod, method display options = None)
Discovered: System.Runtime.Serialization.Xml.Tests (found 278 of 279 test cases)
Starting: System.Runtime.Serialization.Xml.Tests (parallel test collections = on, max threads = 2)
Assert failure(PID 27 [0x0000001b], Thread: 33 [0x0021]): Assertion failed '(igInLoop->igLoopBackEdge == nullptr) || (igInLoop->igLoopBackEdge == igLoopHeader)' in 'System.Enum:TryParseByValueOrName[int](System.RuntimeType,System.ReadOnlySpan`1[ushort],bool,bool,byref):bool' during 'Generate code' (IL size 724; hash 0xef12aa33; Tier1)
File: /__w/1/s/src/coreclr/jit/emit.cpp Line: 5713
Image: /root/helix/work/correlation/dotnet