Fix xarch instruction size estimates#129877

Draft

AndyAyersMS wants to merge 6 commits into

dotnet:mainfrom

AndyAyersMS:andy/fix-x64-instruction-size-estimates

Azure Pipelines / runtime (Build Libraries Test Run checked coreclr windows x64 Release) succeeded Jun 27, 2026 in 1h 26m 11s

Build Libraries Test Run checked coreclr windows x64 Release succeeded

0 errors / 0 warnings

View more details on Azure Pipelines