Assertion failed '!"Extra flags on tree"'

[BruceForstall]

runtime-coreclr jitstress-random

coreclr windows x64 Checked jitstress_random_2 @ Windows.10.Amd64.Open

JIT.performance Work Item

https://dev.azure.com/dnceng-public/public/_build/results?buildId=607041&view=ms.vss-test-web.build-test-results-tab

set DOTNET_TieredCompilation=0
set DOTNET_JitStress=1ef


19:41:08.655 Running test: JIT/Performance/CodeQuality/HWIntrinsic/X86/PacketTracer/PacketTracer/PacketTracer.dll
Extra flags on tree [002332]: -CX-------
N009 ( 10, 16) [002332] -ACXG------                         *  COMMA     simd32 <l:$427, c:$784>
N006 (  5, 12) [002330] DA--G------                         +--*  STORE_LCL_VAR simd32 V284 cse7        d:1 $VN.Void
N005 (  5, 12) [000973] I---G------                         |  \--*  IND       simd32 <l:$427, c:$784>
N004 (  3, 10) [000972] H----------                         |     \--*  CNS_INT(h) long   0x24119aa6340 static Fseq[Ox7] $51
N008 (  5,  4) [002454] DA--G------                         \--*  STORE_LCL_VAR simd32 V319 rat34       
N007 (  1,  1) [002331] -----------                            \--*  LCL_VAR   simd32 V284 cse7        u:1 <l:$427, c:$784>

Assert failure(PID 3812 [0x00000ee4], Thread: 5200 [0x1450]): Assertion failed '!"Extra flags on tree"' in 'Packet256Tracer:GetNaturalColor(System.Runtime.Intrinsics.Vector256`1[int],VectorPacket256,VectorPacket256,VectorPacket256,Scene):VectorPacket256:this' during 'Stress gtSplitTree' (IL size 820; hash 0xcc7cbf41; FullOpts)

    File: D:\a\_work\1\s\src\coreclr\jit\fgdiagnostic.cpp:3598
    Image: C:\h\w\9723085D\p\corerun.exe

App Exit Code: -1073740286

@dotnet/jit-contrib

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[jakobbotsch]

I'll take a look.

[EgorBo]

My bet that assertprop propagates a constant and doesn't update flags in the parent node(s)