Port alternation switch optimization from source generator to RegexCompiler #122959

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Merged

stephentoub merged 4 commits into main from copilot/port-regex-optimization-to-compiler

Jan 27, 2026

+337 −77

Merged

Port alternation switch optimization from source generator to RegexCompiler #122959

Invert condition logic for alternation switch optimization in source …

Azure Pipelines / runtime (Build linux-arm64 Debug Mono_MiniJIT_LibrariesTests) failed Jan 27, 2026 in 7h 19m 7s

Build linux-arm64 Debug Mono_MiniJIT_LibrariesTests failed

256 errors / 1 warnings

Annotations

Check failure on line 91 in .packages/microsoft.dotnet.helix.sdk/11.0.0-beta.26065.101/tools/Microsoft.DotNet.Helix.Sdk.MultiQueue.targets

azure-pipelines / runtime (Build linux-arm64 Debug Mono_MiniJIT_LibrariesTests)

.packages/microsoft.dotnet.helix.sdk/11.0.0-beta.26065.101/tools/Microsoft.DotNet.Helix.Sdk.MultiQueue.targets#L91

.packages/microsoft.dotnet.helix.sdk/11.0.0-beta.26065.101/tools/Microsoft.DotNet.Helix.Sdk.MultiQueue.targets(91,5): error : (NETCORE_ENGINEERING_TELEMETRY=Test) Work item System.Threading.Thread.Tests in job 37539ccf-0637-46ff-b3a0-b7fc40820852 has failed.
Failure log: https://helix.dot.net/api/2019-06-17/jobs/37539ccf-0637-46ff-b3a0-b7fc40820852/workitems/System.Threading.Thread.Tests/console

Check failure on line 91 in .packages/microsoft.dotnet.helix.sdk/11.0.0-beta.26065.101/tools/Microsoft.DotNet.Helix.Sdk.MultiQueue.targets

azure-pipelines / runtime (Build linux-arm64 Debug Mono_MiniJIT_LibrariesTests)

.packages/microsoft.dotnet.helix.sdk/11.0.0-beta.26065.101/tools/Microsoft.DotNet.Helix.Sdk.MultiQueue.targets#L91

.packages/microsoft.dotnet.helix.sdk/11.0.0-beta.26065.101/tools/Microsoft.DotNet.Helix.Sdk.MultiQueue.targets(91,5): error : (NETCORE_ENGINEERING_TELEMETRY=Test) Work item System.ValueTuple.Tests in job 37539ccf-0637-46ff-b3a0-b7fc40820852 has failed.
Failure log: https://helix.dot.net/api/2019-06-17/jobs/37539ccf-0637-46ff-b3a0-b7fc40820852/workitems/System.ValueTuple.Tests/console

Check failure on line 91 in .packages/microsoft.dotnet.helix.sdk/11.0.0-beta.26065.101/tools/Microsoft.DotNet.Helix.Sdk.MultiQueue.targets

azure-pipelines / runtime (Build linux-arm64 Debug Mono_MiniJIT_LibrariesTests)

.packages/microsoft.dotnet.helix.sdk/11.0.0-beta.26065.101/tools/Microsoft.DotNet.Helix.Sdk.MultiQueue.targets#L91

.packages/microsoft.dotnet.helix.sdk/11.0.0-beta.26065.101/tools/Microsoft.DotNet.Helix.Sdk.MultiQueue.targets(91,5): error : (NETCORE_ENGINEERING_TELEMETRY=Test) Work item System.Transactions.Local.Tests in job 37539ccf-0637-46ff-b3a0-b7fc40820852 has failed.
Failure log: https://helix.dot.net/api/2019-06-17/jobs/37539ccf-0637-46ff-b3a0-b7fc40820852/workitems/System.Transactions.Local.Tests/console

Check failure on line 91 in .packages/microsoft.dotnet.helix.sdk/11.0.0-beta.26065.101/tools/Microsoft.DotNet.Helix.Sdk.MultiQueue.targets

azure-pipelines / runtime (Build linux-arm64 Debug Mono_MiniJIT_LibrariesTests)

.packages/microsoft.dotnet.helix.sdk/11.0.0-beta.26065.101/tools/Microsoft.DotNet.Helix.Sdk.MultiQueue.targets#L91

.packages/microsoft.dotnet.helix.sdk/11.0.0-beta.26065.101/tools/Microsoft.DotNet.Helix.Sdk.MultiQueue.targets(91,5): error : (NETCORE_ENGINEERING_TELEMETRY=Test) Work item System.Threading.Timer.Tests in job 37539ccf-0637-46ff-b3a0-b7fc40820852 has failed.
Failure log: https://helix.dot.net/api/2019-06-17/jobs/37539ccf-0637-46ff-b3a0-b7fc40820852/workitems/System.Threading.Timer.Tests/console

Check failure on line 91 in .packages/microsoft.dotnet.helix.sdk/11.0.0-beta.26065.101/tools/Microsoft.DotNet.Helix.Sdk.MultiQueue.targets

azure-pipelines / runtime (Build linux-arm64 Debug Mono_MiniJIT_LibrariesTests)

.packages/microsoft.dotnet.helix.sdk/11.0.0-beta.26065.101/tools/Microsoft.DotNet.Helix.Sdk.MultiQueue.targets#L91

.packages/microsoft.dotnet.helix.sdk/11.0.0-beta.26065.101/tools/Microsoft.DotNet.Helix.Sdk.MultiQueue.targets(91,5): error : (NETCORE_ENGINEERING_TELEMETRY=Test) Work item System.Threading.ThreadPool.Tests in job 37539ccf-0637-46ff-b3a0-b7fc40820852 has failed.
Failure log: https://helix.dot.net/api/2019-06-17/jobs/37539ccf-0637-46ff-b3a0-b7fc40820852/workitems/System.Threading.ThreadPool.Tests/console

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