[iOS-sim][x64] CoreCLR build fails with missing X86.F16C intrinsics #123139
Description
Build Information
Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=1251385&view=logs&j=0bd79992-9086-5fc7-8d1a-07826b69ffb5
Build error leg or test failing: Build / iossimulator-x64 Release AllSubsets_CoreCLR_Smoke / Build product
Pull request: #119575
Error Message
Fill the error message using step by step known issues guidance.
{
"ErrorMessage": "Failed to load type 'System.Runtime.Intrinsics.X86.F16C' from assembly 'System.Private.CoreLib",
"ErrorPattern": "",
"BuildRetry": false,
"ExcludeConsoleLog": false
}Known issue validation
Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1251385
Error message validated: [Failed to load type 'System.Runtime.Intrinsics.X86.F16C' from assembly 'System.Private.CoreLib]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 1/13/2026 4:44:29 PM UTC
Report
| Build | Definition | Step Name | Console log | Pull Request |
|---|---|---|---|---|
| 1251868 | dotnet/runtime | Build product | Log | #122371 |
| 1251385 | dotnet/runtime | Build product | Log | #119575 |
Summary
| 24-Hour Hit Count | 7-Day Hit Count | 1-Month Count |
|---|---|---|
| 2 | 2 | 2 |