JIT: SVE2 non-temporal scatter store tests are failing #124750
Description
Example pipeline run: https://dev.azure.com/dnceng-public/public/_build/results?buildId=1305236&view=results
Example console log: https://helixr18s23ayyeko0k025g8.blob.core.windows.net/dotnet-runtime-refs-heads-main-4424d7e9872d488fa0/HardwareIntrinsics_Arm_ro/1/console.2d74b0ab.log
11:04:47.043 Running test: _Sve2_ro::JIT.HardwareIntrinsics.Arm._Sve2._Sve.Program.Sve2_Scatter16BitNarrowingNonTemporal_Indices_long_long()
Beginning scenario: RunBasicScenario_UnsafeRead
Beginning scenario: RunBasicScenario_Load
Beginning scenario: RunBasicScenario_FalseMask
Beginning scenario: RunBasicScenario_NonFaulting
Beginning scenario: RunReflectionScenario_UnsafeRead
Beginning scenario: RunLclVarScenario_UnsafeRead
Beginning scenario: RunClassFldScenario
Beginning scenario: RunStructLclFldScenario
Sve2.Scatter16BitNarrowingNonTemporal(Int64, Int16*, Int64, Int64): RunStructLclFldScenario failed:
mask: (1, 0)
input: (598790890201539011, 197271212887199194)
indices: (1074, 1108)
result: (0, 0)
These tests seem to have been added last week by #123892. cc @dotnet/arm64-contrib @ylpoonlg, can you please take a look with high priority?
Known Issue Error Message
Fill the error message using step by step known issues guidance.
{
"ErrorMessage": "Failed test: _Sve2_ro::JIT.HardwareIntrinsics.Arm._Sve2._Sve.Program.Sve2_Scatter16BitNarrowingNonTemporal_Indices_long_long",
"ErrorPattern": "",
"BuildRetry": false,
"ExcludeConsoleLog": false
}Known issue validation
Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1305236
Error message validated: [Failed test: _Sve2_ro::JIT.HardwareIntrinsics.Arm._Sve2._Sve.Program.Sve2_Scatter16BitNarrowingNonTemporal_Indices_long_long]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 2/23/2026 12:07:31 PM UTC
Report
Summary
| 24-Hour Hit Count | 7-Day Hit Count | 1-Month Count |
|---|---|---|
| 4 | 10 | 10 |