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JIT: SVE Assertion failed 'targetReg != embMaskOp2Reg' during 'Generate code' #105474

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@jakobbotsch

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@jakobbotsch
// Generated by Fuzzlyn v2.0 on 2024-07-25 13:40:05
// Run on Arm64 Windows
// Seed: 6880262867354271142-vectort,vector64,vector128,armadvsimd,armadvsimdarm64,armaes,armarmbase,armarmbasearm64,armcrc32,armcrc32arm64,armdp,armsha1,armsha256,armsve
// Reduced from 171.2 KiB to 0.4 KiB in 00:00:55
// Hits JIT assert in Release:
// Assertion failed 'targetReg != embMaskOp2Reg' in 'Program:Main(Fuzzlyn.ExecutionServer.IRuntime)' during 'Generate code' (IL size 40; hash 0xade6b36b; FullOpts)
//
//     File: C:\dev\dotnet\runtime\src\coreclr\jit\hwintrinsiccodegenarm64.cpp Line: 525
//
using System;
using System.Runtime.CompilerServices;
using System.Numerics;
using System.Runtime.Intrinsics;
using System.Runtime.Intrinsics.Arm;

public class Program
{
    public static Vector<double> s_3;
    public static void Main()
    {
        var vr1 = Vector128.CreateScalar(10).AsVector();
        s_3 = Sve.FusedMultiplyAdd(vr1, s_3, s_3);
    }
}

cc @dotnet/jit-contrib @dotnet/arm64-contrib

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Priority:2Work that is important, but not critical for the releasearch-arm64area-CodeGen-coreclrCLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMIarm-sveWork related to arm64 SVE/SVE2 supportin-prThere is an active PR which will close this issue when it is merged

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