JIT: Assertion failed '(tree->gtDebugFlags & GTF_DEBUG_NODE_MORPHED) && "ERROR: Did not morph this node!"' during 'Morph - Global'

[jakobbotsch]

// Generated by Fuzzlyn v2.2 on 2024-08-12 14:54:43
// Run on X64 Windows
// Seed: 16070819126771301687-vectort,vector128,vector256,x86aes,x86avx,x86avx2,x86avx512bw,x86avx512bwvl,x86avx512cd,x86avx512cdvl,x86avx512dq,x86avx512dqvl,x86avx512f,x86avx512fvl,x86avx512fx64,x86bmi1,x86bmi1x64,x86bmi2,x86bmi2x64,x86fma,x86lzcnt,x86lzcntx64,x86pclmulqdq,x86popcnt,x86popcntx64,x86sse,x86ssex64,x86sse2,x86sse2x64,x86sse3,x86sse41,x86sse41x64,x86sse42,x86sse42x64,x86ssse3,x86x86base
// Reduced from 61.3 KiB to 0.3 KiB in 00:01:27
// Hits JIT assert in Release:
// Assertion failed '(tree->gtDebugFlags & GTF_DEBUG_NODE_MORPHED) && "ERROR: Did not morph this node!"' in 'Program:Main(Fuzzlyn.ExecutionServer.IRuntime)' during 'Morph - Global' (IL size 18; hash 0xade6b36b; FullOpts)
// 
//     File: D:\a\_work\1\s\src\coreclr\jit\morph.cpp Line: 12664
// 
using System;
using System.Runtime.CompilerServices;
using System.Numerics;
using System.Runtime.Intrinsics;
using System.Runtime.Intrinsics.X86;

public class Program
{
    public static void Main()
    {
        int[] vr0 = default(int[]);
        double vr1 = -1216.4287239109472d % vr0[0];
    }
}

cc @dotnet/jit-contrib

Most likely introduced by #106185, I'll take a look.

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[AndyAyersMS]

Is this a different issue than #106141?

[jakobbotsch]

I think so -- this one started showing up very frequently after #106185, the other one is pretty rare (and win-x86 only).