JIT: Assertion failed '!"Unexpected small type in IR"'

[jakobbotsch]

// Generated by Fuzzlyn v1.6 on 2023-11-26 16:15:10
// Run on X64 Windows
// Seed: 3845092599037652036
// Reduced from 72.7 KiB to 0.2 KiB in 00:01:18
// Hits JIT assert in Release:
// Assertion failed '!"Unexpected small type in IR"' in 'Program:Main(Fuzzlyn.ExecutionServer.IRuntime)' during 'Post-Morph' (IL size 19; hash 0xade6b36b; FullOpts)
// 
//     File: D:\a\_work\1\s\src\coreclr\jit\fgdiagnostic.cpp Line: 3293
// 
using System.Runtime.CompilerServices;

public class Program
{
    public static void Main()
    {
        short[] vr5 = new short[]{0};
        vr5[0] = (short)((long)0 | vr5[0]);
    }
}

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Issue Details

---

// Generated by Fuzzlyn v1.6 on 2023-11-26 16:15:10
// Run on X64 Windows
// Seed: 3845092599037652036
// Reduced from 72.7 KiB to 0.2 KiB in 00:01:18
// Hits JIT assert in Release:
// Assertion failed '!"Unexpected small type in IR"' in 'Program:Main(Fuzzlyn.ExecutionServer.IRuntime)' during 'Post-Morph' (IL size 19; hash 0xade6b36b; FullOpts)
// 
//     File: D:\a\_work\1\s\src\coreclr\jit\fgdiagnostic.cpp Line: 3293
// 
using System.Runtime.CompilerServices;

public class Program
{
    public static void Main()
    {
        short[] vr5 = new short[]{0};
        vr5[0] = (short)((long)0 | vr5[0]);
    }
}

Author:	jakobbotsch
Assignees:	-
Labels:	area-CodeGen-coreclr
Milestone:	-