* Remove all use of <Nullable>annotations</Nullable>

We've inadvertently shipped multiple libraries with incorrect nullable reference type annotations because:
a) Their ref assemblies aren't actually being shipped, and/or
b) Their src projects using `<Nullable>annotations</Nullable>`

`<Nullable>annotations</Nullable>` means "I'm nullable annotated but don't validate them", which means consumers of these libraries see annotations that we haven't thoughtfully added or reviewed.

This removes all use of it and gets us back to a place where we're only shipping nullable annotations for libraries where we've done the work to ensure they're correct.  We can subsequently finish annotating these stragglers.

* Don't disable LibraryImportGenerator when nullable is disabled

* Add #nullable enable to LibraryImportAttribute file for polyfill scenarios.

* Disable LibraryImportGenerator on ILCompiler.TypeSystem.Tests assemblies.
Convert a DllImport in HostWriter that now gets the polyfill experience.

---------
Co-authored-by: NEric StJohn <ericstj@microsoft.com>
Co-authored-by: NJeremy Koritzinsky <jekoritz@microsoft.com>

* Add DiagnosticDescriptorHelper

Create a helper method that formats and sets the helpLink for
DiagnosticDescriptors

* Add HelpLinkUris to ILLink

* Handle different DiagnosticCategories

This change adds CLI telemetry for common mobile and wasm scenarios.

Total app size is another element we plan on tracking and that will be added in a follow up.

Fixes https://github.com/dotnet/runtime/issues/88844

Prefix type names with global and use static TypeSyntax and NameSyntax instead of Parse(Type)Name (#90339)

* Prefix type names with global and use static TypeSyntax and NameSyntax instead of Parse(Type)Name

The following commit caused workload to be required for a blazor app
when `InvariantGlobalization==true`, but this is not required.

```
commit 26ae0978
Author: Ankit Jain <radical@gmail.com>
Date:   Thu Aug 10 23:39:10 2023 -0400

    [wasm] Fix up conditions to trigger relink, and require `wasm-tools` workload (#89754)
```

And this broke some sdk tests.

* Relaxing constraints of System.GC.AllocateArray<T>.

It's now possible to allocate pinned and default-initialized arrays that contain references.

Fix #48703

* Adding coverage of GC.AllocateArray with ref types.

Added a test that pins a reference type array and resolves references to indices with pointer arithmetic, checking that modifications are visible back in the original array.

Test #48703

* Mono/NativeAOT relaxing of System.GC.AllocateArray<T>.

* Relaxed GC.AllocateUninitializedArray for ref types as well.

This was done by deferring reference types to GC.AllocateArray to avoid potential memory issues with the GC + uninitialized memory. The API only promises to avoid initialization if possible, anyway.
Refactored tests to parametrically exercise these new relaxed constraints.

* Simplifiy conditionals in AllocateUninitializedArray.

Relying on internal implementation zeroing refs if necessary.

* Also simplify path for NativeOAT.

Mono already piggybacks on the AllocateArray path anyway.

* Simplify pinning paths.

All conditional paths in GC.Allocate*Array now handle pinning unconditionally out of the main branch.

* Don't use `var` if type name doesn't exist explicitly on right-hand side

* PR feedback for using terse method tables and JIT intrinsics for GC array allocation that should be slightly faster.

* Changed EmbeddedValueType and added comment.

After a longer discussion, settled on a slightly augmented suggestion that isn't as controversial as the prior one.

* Fixing signature for `RhAllocateNewArray` in NativeAOT to directly use a `MethodTable*`

* Adding explicit structlayout to silence warning for EmbeddedValueType in GCTests, and improved the comment.

---------
Co-authored-by: NJan Kotas <jkotas@microsoft.com>

- A previous change that was serviced back changed session-local named mutexes to be user-specific by restricting the permissions of the session directories and files under them, and adding the sticky bit to some directoires. A compat issue arose from that change, as the session directories have the session ID in their name and session IDs can be reused between different users. The current plan that we have discussed is to revert the change and service back the revert, which also restores the intended behavior, and offer user-specific mutexes as a new feature in a future .NET that would satisfy some user scenarios in a better way.
- This PR reverts the previous change (first commit) and restores one change from the previous change (second commit) to improve backward compatibility due to differences in permissions for session directories before and after the change
- Fixes https://github.com/dotnet/runtime/issues/80619

* first XOR Linq implemetation

* replace classic allocation by stack allocation for ReadByte

* replace classic allocation by stack allocation for ReadByte & WriteByte

* replace classic allocation by stack allocation for ReadByte/CopyToAsync

* add missing ConfigureAwait(false) on ReadAsync

* replace classic allocation by stack allocation for ReadByte/WriteByte

* Revert "first XOR Linq implemetation"

This reverts commit 449fddec66b3311866dc1e57c07ad7127e8039ff.

* indent fix

* rollback stackalloc on async methods

* missing char

* fix ConfigureAwait

* rollback ReadByte optim (degrade perfs)

* variablename fix

* missing comment

* rollback Stream allocations

* missing arguments

* add Write(ReadOnlySpan<byte>) method

* better initialize Span

* add CRLF

* resolve comments

* simplification call method Write

* Update src/libraries/System.Private.DataContractSerialization/src/System/Runtime/Serialization/Json/JsonEncodingStreamWrapper.cs

replace Span by ReadOnlySpan
Co-authored-by: NMichał Petryka <35800402+MichalPetryka@users.noreply.github.com>

* remove trailing whitespace

* Update src/libraries/System.Private.DataContractSerialization/src/System/Runtime/Serialization/Json/JsonEncodingStreamWrapper.cs
Co-authored-by: NStephen Toub <stoub@microsoft.com>

* Update src/libraries/System.Private.DataContractSerialization/src/System/Runtime/Serialization/Json/JsonEncodingStreamWrapper.cs
Co-authored-by: NStephen Toub <stoub@microsoft.com>

---------
Co-authored-by: NMichał Petryka <35800402+MichalPetryka@users.noreply.github.com>
Co-authored-by: NStephen Toub <stoub@microsoft.com>

* Use ConcurrentDictionary to avoid lock contention when serializing using DataContractSerializer

* Improve concurrency for GetId

* Prevent allocating multiple slots in s_dataContractCache for the same typeHandle

* Use RuntimeTypeHandle as key in dictionary

* add readonly

* Remove usage of lazy

* revert whitespace changes

* Use RuntimeTypeHandle.Value as key instead of RuntimeTypeHandle

* Apply same perf improvement to JDCS; Remove Int/TypeHandleRef silliness that we no longer need.

---------
Co-authored-by: NSteve Molloy <smolloy@microsoft.com>

* Improve debugging for configuration lists.

* Add missing DebuggerBrowsable.Never annotations.

* Add DebuggerBrowsableState.Never to a few internal getters that may throw.

* Simplify JsonPropertyInfo DebuggerDisplay

* Ensure debugger display matches API name.

We noticed that ARC isn't enabled for System.Globalization.Native code but we aren't properly doing manual memory management by calling `release`.

Enable ARC for the System.Globalization.Native ObjC code so it is handled automatically by the compiler.
Disable it for System.Native code since that one is less complex and we can manually manage it.

We need to wrap all public entrypoints to the library in `@autoreleasepool` blocks so that the releasing of autoreleased objects occurs at the end of the block, rather than at some undetermined point in the future (and we don't even know if we have an autorelease pool in the thread).

This PR adds support for Native AOT compilation on Helix. It improves test coverage for Mono and Native AOT by running functional tests on Helix. The proxy project is updated with Native AOT props and apple build targets are updated to support Native AOT compilation. Additionally, it simplifies the sample app by utilizing the shared Apple targets.

This reverts commit bbe40f8c.

This caused perf pipeline runs to break. But https://github.com/dotnet/performance/pull/3251 from @caaavik-msft, along with this revert will fix the issue.

Issue: https://github.com/dotnet/runtime/issues/90420

- Use `VER_PRODUCTVERSION_STR` / `sccsid` from generated `_version.(h|c)` for version and commit info (for tracing)
- Use `RuntimeProductVersion` for version from header generated by `GenerateRuntimeVersionFile`
- Remove `HOST_*_PKG_VER` defines and script arguments for passing that info around

* Don't fallback to PNSE, and give a more descriptive error message.

* CodeGeneratorConversionException is internal. Wrap it before re-throwing.

* Update src/libraries/System.Private.Xml/src/System/Xml/Serialization/Compilation.cs

Fixing comment about lack of compiler at runtime
Co-authored-by: NJan Kotas <jkotas@microsoft.com>

* Update Compilation.cs

Remove conditional code that was not needed.

---------
Co-authored-by: NMatt Connew <mconnew@users.noreply.github.com>
Co-authored-by: NJan Kotas <jkotas@microsoft.com>

Co-authored-by: NIlona Tomkowicz <32700855+ilonatommy@users.noreply.github.com>

* Enabled tests

---------
Signed-off-by: NVlad <vladionescu1399@gmail.com>
Co-authored-by: NMilos Kotlar <kotlarmilos@gmail.com>

* Delete duplicative fallback paths from Ascii

GetIndexOfFirstNonAsciiChar has four different paths it takes: one for Vector512/256, one for Ssse2/AdvSimd, one for Vector128, and one for everything else. But the Vector512/256 path is capable of both Vector128 and scalar, which obsoletes the default fallback case which uses `Vector<T>` and a scalar path.  We can entirely delete the "_Default" path, and consolidate the calls to the Vector512/256/128/scalar path.

GetIndexOfFirstNonAsciiByte is similar.  Its "_Default" doesn't use `Vector<T>`, but it's still duplicative and deletable.

* Address PR feedback

* Fix Vector512 rightshift

Fixes #89338

* Adding tests covering the Vector shift operators

* Ensure Unsafe.Read/Write are marked intrinsic

* Workaround a separate bug on Arm64

* Mark the new vector shift tests with ActiveIssue where relevant

---------
Co-authored-by: NTanner Gooding <tagoo@outlook.com>

* Replace Utf16Utility.GetPointerToFirstInvalidChar fallback with Vector128

The else block will only be used on platforms where `Vector<T>` is 128-bit, so just use Vector128 explicitly.

* Address PR feedback

* Update debugger AMD64 disassembly tables

Regenerate with gdb 12. Fix various bugs in the table generation,
such as due to incorrect ModRM/reg escape handling, and new instructions.

* Remove 3DNow! table support

* Remove obsolete AMD XOP encoding support

* Update walker for new tables

Especially, removed 3DNow, XOP.

Also, update README.md

* Remove special-case XOP instructions

* Remove unused InstrForm

Due to removing XOP instructions

* Remove another removed InstrForm

* Support EVEX encoding

* Add more logging for patch decode; handle 64-byte memory in patch

* Support EVEX embedded broadcast

* Update comment about EVEX `disp8*N` addressing

* Fix build

* ExtractMSB arm64 support

* Move arm64 specific code into ifdef

Fixes https://github.com/dotnet/runtime/issues/71095

Microsoft.NET.Workload.Emscripten.Current.Manifest-8.0.100.Transport
 From Version 8.0.0-rc.1.23409.6 -> To Version 8.0.0-rc.1.23411.1
Co-authored-by: Ndotnet-maestro[bot] <dotnet-maestro[bot]@users.noreply.github.com>

* Do not generate internal archives

We haven't populated it since moving to the cmake-based build system a couple years ago so it probably isn't worth doing now either.

* Make Analyzer crashes a warning

* Suppress AD0001 where it fails

* Suppress AD0001 in other CoreLibs

* Rework JsonNamingPolicy.SnakeCase/KebabCase to match Json.NET semantics.

* Alternative implementation that handles digits properly but doesn't trim non-alphanumeric characters.

* Refactor to switch statement

* add non-ascii letter test case

* Address feedback

* Add support for surrogate pair capitalization

* Revert "Add support for surrogate pair capitalization"

This reverts commit c1c5d1c8a039235a14caa0f02c7e97d1f696634c.

* Add surrogate pair unit tests

* Address more feedback

* Address feedback and add a few more test cases.

* Add more surrogate pair tests

* Add unpaired surrogate testing

Co-authored-by: NJan Kotas <jkotas@microsoft.com>

Co-authored-by: NDavid Cantú <dacantu@microsoft.com>

* [RISC-V] Fix failing cases with delegates passing a struct with 2 longs as argument (test16833.cs -> TestMRB1, TestMRB5)

Fix emits a stack shuffle entry when we run out of general purpose registers, analogous to loongarch64.

* [RISC-V] Fix comment, inter-register mov doesn't take an immediate.

* [RISC-V] Remove unused EmitLoadStoreRegPairImm methods

* [RISC-V] Fix offset encoding in sd instruction
Co-authored-by: NDong-Heon Jung <clamp03@gmail.com>

---------
Co-authored-by: NDong-Heon Jung <clamp03@gmail.com>

* Update dependencies from https://github.com/dotnet/arcade build 20230803.7

Microsoft.DotNet.Arcade.Sdk , Microsoft.DotNet.Build.Tasks.Archives , Microsoft.DotNet.Build.Tasks.Feed , Microsoft.DotNet.Build.Tasks.Installers , Microsoft.DotNet.Build.Tasks.Packaging , Microsoft.DotNet.Build.Tasks.TargetFramework , Microsoft.DotNet.Build.Tasks.Templating , Microsoft.DotNet.Build.Tasks.Workloads , Microsoft.DotNet.CodeAnalysis , Microsoft.DotNet.GenAPI , Microsoft.DotNet.GenFacades , Microsoft.DotNet.Helix.Sdk , Microsoft.DotNet.PackageTesting , Microsoft.DotNet.RemoteExecutor , Microsoft.DotNet.SharedFramework.Sdk , Microsoft.DotNet.VersionTools.Tasks , Microsoft.DotNet.XUnitConsoleRunner , Microsoft.DotNet.XUnitExtensions
 From Version 8.0.0-beta.23402.2 -> To Version 8.0.0-beta.23403.7

* Update dependencies from https://github.com/dotnet/xharness build 20230803.1

Microsoft.DotNet.XHarness.CLI , Microsoft.DotNet.XHarness.TestRunners.Common , Microsoft.DotNet.XHarness.TestRunners.Xunit
 From Version 8.0.0-prerelease.23377.1 -> To Version 8.0.0-prerelease.23403.1

* Update dependencies from https://github.com/dotnet/arcade build 20230804.2

Microsoft.DotNet.Arcade.Sdk , Microsoft.DotNet.Build.Tasks.Archives , Microsoft.DotNet.Build.Tasks.Feed , Microsoft.DotNet.Build.Tasks.Installers , Microsoft.DotNet.Build.Tasks.Packaging , Microsoft.DotNet.Build.Tasks.TargetFramework , Microsoft.DotNet.Build.Tasks.Templating , Microsoft.DotNet.Build.Tasks.Workloads , Microsoft.DotNet.CodeAnalysis , Microsoft.DotNet.GenAPI , Microsoft.DotNet.GenFacades , Microsoft.DotNet.Helix.Sdk , Microsoft.DotNet.PackageTesting , Microsoft.DotNet.RemoteExecutor , Microsoft.DotNet.SharedFramework.Sdk , Microsoft.DotNet.VersionTools.Tasks , Microsoft.DotNet.XUnitConsoleRunner , Microsoft.DotNet.XUnitExtensions
 From Version 8.0.0-beta.23402.2 -> To Version 8.0.0-beta.23404.2

* Update dependencies from https://github.com/dotnet/runtime build 20230806.6

Microsoft.DotNet.ILCompiler , Microsoft.NET.ILLink.Tasks , Microsoft.NET.Sdk.IL , Microsoft.NETCore.App.Runtime.win-x64 , Microsoft.NETCore.ILAsm , runtime.native.System.IO.Ports , System.Text.Json
 From Version 8.0.0-rc.1.23401.3 -> To Version 8.0.0-rc.1.23406.6

* Update dependencies from https://github.com/dotnet/arcade build 20230807.1

Microsoft.DotNet.Arcade.Sdk , Microsoft.DotNet.Build.Tasks.Archives , Microsoft.DotNet.Build.Tasks.Feed , Microsoft.DotNet.Build.Tasks.Installers , Microsoft.DotNet.Build.Tasks.Packaging , Microsoft.DotNet.Build.Tasks.TargetFramework , Microsoft.DotNet.Build.Tasks.Templating , Microsoft.DotNet.Build.Tasks.Workloads , Microsoft.DotNet.CodeAnalysis , Microsoft.DotNet.GenAPI , Microsoft.DotNet.GenFacades , Microsoft.DotNet.Helix.Sdk , Microsoft.DotNet.PackageTesting , Microsoft.DotNet.RemoteExecutor , Microsoft.DotNet.SharedFramework.Sdk , Microsoft.DotNet.VersionTools.Tasks , Microsoft.DotNet.XUnitConsoleRunner , Microsoft.DotNet.XUnitExtensions
 From Version 8.0.0-beta.23402.2 -> To Version 8.0.0-beta.23407.1

* Update dependencies from https://github.com/dotnet/icu build 20230807.2

Microsoft.NETCore.Runtime.ICU.Transport
 From Version 8.0.0-rc.1.23381.1 -> To Version 8.0.0-rc.1.23407.2

* Update dependencies from https://github.com/dotnet/xharness build 20230807.2

Microsoft.DotNet.XHarness.CLI , Microsoft.DotNet.XHarness.TestRunners.Common , Microsoft.DotNet.XHarness.TestRunners.Xunit
 From Version 8.0.0-prerelease.23377.1 -> To Version 8.0.0-prerelease.23407.2

* Update dependencies from https://github.com/dotnet/emsdk build 20230807.1

Microsoft.NET.Workload.Emscripten.Current.Manifest-8.0.100.Transport
 From Version 8.0.0-rc.1.23402.3 -> To Version 8.0.0-rc.1.23407.1

* Update dependencies from https://github.com/dotnet/hotreload-utils build 20230807.2

Microsoft.DotNet.HotReload.Utils.Generator.BuildTool
 From Version 8.0.0-alpha.0.23377.1 -> To Version 8.0.0-alpha.0.23407.2

* Update dependencies from https://github.com/dotnet/cecil build 20230807.2

Microsoft.DotNet.Cecil
 From Version 0.11.4-alpha.23374.2 -> To Version 0.11.4-alpha.23407.2

* Fix.

* Update dependencies from https://github.com/dotnet/arcade build 20230808.6

Microsoft.DotNet.Arcade.Sdk , Microsoft.DotNet.Build.Tasks.Archives , Microsoft.DotNet.Build.Tasks.Feed , Microsoft.DotNet.Build.Tasks.Installers , Microsoft.DotNet.Build.Tasks.Packaging , Microsoft.DotNet.Build.Tasks.TargetFramework , Microsoft.DotNet.Build.Tasks.Templating , Microsoft.DotNet.Build.Tasks.Workloads , Microsoft.DotNet.CodeAnalysis , Microsoft.DotNet.GenAPI , Microsoft.DotNet.GenFacades , Microsoft.DotNet.Helix.Sdk , Microsoft.DotNet.PackageTesting , Microsoft.DotNet.RemoteExecutor , Microsoft.DotNet.SharedFramework.Sdk , Microsoft.DotNet.VersionTools.Tasks , Microsoft.DotNet.XUnitConsoleRunner , Microsoft.DotNet.XUnitExtensions
 From Version 8.0.0-beta.23402.2 -> To Version 8.0.0-beta.23408.6

Dependency coherency updates

Microsoft.DotNet.XliffTasks
 From Version 1.0.0-beta.23381.1 -> To Version 1.0.0-beta.23407.1 (parent: Microsoft.DotNet.Arcade.Sdk

* Update dependencies from https://github.com/dotnet/icu build 20230807.2

Microsoft.NETCore.Runtime.ICU.Transport
 From Version 8.0.0-rc.1.23381.1 -> To Version 8.0.0-rc.1.23407.2

* Update dependencies from https://github.com/dotnet/runtime-assets build 20230808.1

Microsoft.DotNet.CilStrip.Sources , System.ComponentModel.TypeConverter.TestData , System.Data.Common.TestData , System.Drawing.Common.TestData , System.Formats.Tar.TestData , System.IO.Compression.TestData , System.IO.Packaging.TestData , System.Net.TestData , System.Private.Runtime.UnicodeData , System.Runtime.Numerics.TestData , System.Runtime.TimeZoneData , System.Security.Cryptography.X509Certificates.TestData , System.Text.RegularExpressions.TestData , System.Windows.Extensions.TestData
 From Version 8.0.0-beta.23401.1 -> To Version 8.0.0-beta.23408.1

* Update dependencies from https://github.com/dotnet/arcade build 20230809.5

Microsoft.DotNet.Arcade.Sdk , Microsoft.DotNet.Build.Tasks.Archives , Microsoft.DotNet.Build.Tasks.Feed , Microsoft.DotNet.Build.Tasks.Installers , Microsoft.DotNet.Build.Tasks.Packaging , Microsoft.DotNet.Build.Tasks.TargetFramework , Microsoft.DotNet.Build.Tasks.Templating , Microsoft.DotNet.Build.Tasks.Workloads , Microsoft.DotNet.CodeAnalysis , Microsoft.DotNet.GenAPI , Microsoft.DotNet.GenFacades , Microsoft.DotNet.Helix.Sdk , Microsoft.DotNet.PackageTesting , Microsoft.DotNet.RemoteExecutor , Microsoft.DotNet.SharedFramework.Sdk , Microsoft.DotNet.VersionTools.Tasks , Microsoft.DotNet.XUnitConsoleRunner , Microsoft.DotNet.XUnitExtensions
 From Version 8.0.0-beta.23402.2 -> To Version 8.0.0-beta.23409.5

Dependency coherency updates

Microsoft.DotNet.XliffTasks
 From Version 1.0.0-beta.23381.1 -> To Version 1.0.0-beta.23408.1 (parent: Microsoft.DotNet.Arcade.Sdk

* Update dependencies from https://github.com/dotnet/emsdk build 20230809.6

Microsoft.NET.Workload.Emscripten.Current.Manifest-8.0.100.Transport
 From Version 8.0.0-rc.1.23402.3 -> To Version 8.0.0-rc.1.23409.6

* Use PackageDownload not PackageReference for JitTools in SuperFileCheck.csproj

---------
Co-authored-by: Ndotnet-maestro[bot] <dotnet-maestro[bot]@users.noreply.github.com>
Co-authored-by: NIlona Tomkowicz <32700855+ilonatommy@users.noreply.github.com>
Co-authored-by: NJo Shields <directhex@apebox.org>