Assertion failed 'isGeneralRegister(reg3)'

[JulieLeeMSFT]

Failed in (1):

• runtime-coreclr jitstress-random 20260708.1

Console Log: Console Log
Source: runtime-coreclr jitstress-random / coreclr linux arm64 Checked jitstress_random_1 @ AzureLinux.3.Arm64.Open / HardwareIntrinsics_Arm_ro

Failed tests:

- coreclr linux arm64 Checked jitstress_random_1 @ AzureLinux.3.Arm64.Open
  - HardwareIntrinsics_Arm_ro

Error Message:

Assert failure(PID 93239 [0x00016c37], Thread: 93239 [0x16c37]): Assertion failed 'isGeneralRegister(reg3)' in 'JIT.HardwareIntrinsics.Arm._Sve2.SveGatherVectorIndices__Sve2_GatherVectorUInt32WithByteOffsetsZeroExtendNonTemporal_long_long:RunBasicScenario_UnsafeRead():this' during 'Generate code' (IL size 132; hash 0x0c5fe39a; FullOpts)

    File: /__w/1/s/src/coreclr/jit/emitarm64.cpp:7339
    Image: /datadisks/disk1/work/A8070911/p/corerun

[createdump] Gathering state for process 93239 corerun
[createdump] Crashing thread 16c37 signal 6 (0006)
apply_reg_state: ip and cfa unchanged; stopping here (ip=0xfe9e92213314)
apply_reg_state: ip and cfa unchanged; stopping here (ip=0xfe9e92213314)
[createdump] Writing crash report to file /datadisks/disk1/dumps/coredump.93239.dmp.crashreport.json
[createdump] Crash report successfully written
[createdump] Writing minidump with heap to file /datadisks/disk1/dumps/coredump.93239.dmp
[createdump] Written 354996224 bytes (86669 pages) to core file
[createdump] Target process is alive
[createdump] Dump successfully written in 957ms
waitpid() returned successfully (wstatus 00000000) WEXITSTATUS 0 WTERMSIG 0
Exit Code: 22
Expected: 100
Actual: 22

[JulieLeeMSFT]

cc @dotnet/arm64-contrib.

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