* Moved R2RDump statistics from console to --out file

* Automated the fixup statistics report into a self-maintaining component.

* Optimized the minimum values by setting them at the beginning, and removing the Math.Max() calls.

* Use Assembly.Load as first option to load TempAssembly.

…rmance hazard (#51576)

* In WASM builds, inflated lock words have an 'is interned' flag for strings to enable O(1) 'is interned' checks vs the previous hash lookup
* When the expression being passed to InvokeJS is interned, the binding_support string intern table is used to avoid marshaling the expression again

Fixes for minor source-level incompatibilities caught by
#52984.

`AArch64Intrinsics` really should be `AARCH64Intrinsics`. And `llvm.floor`,
`llvm.ceil`, and `llvm.trunc` are architecture-independent intrinsics.

Also adds LLVM 11 linking flags to CMakeLists.txt.

* Return null when Variant contains BSTR

I found this one when implement VARIANT marshalling for NativeAOT. Without that I have to resort to duplicate implementation in that class.
PR where I discover this - dotnet/runtimelab#1142
Problem is `Marshal.PtrToStringBSTR` throw exception when passed `IntPtr.Zero`, but `Marshal.StringToBSTR` produce `IntPtr.Zero` when given null.

* Update nullable annotations

The implementation called into uname() which returns the Linux kernel version, but the API as specified in https://github.com/dotnet/designs/blob/main/accepted/2020/platform-checks/platform-checks.md expects the Android API level to be passed in and checked.

Also fix `OperatingSystem.IsLinux()` to return false on Android.

* Make the lookup for getApplicationProtocol optional

The method getApplicationProtocol in javax.net.ssl.SSLEngine is only supported on API level 29 and above, so running on older devices would result in a crash. This change makes the initial method lookup optional and AndroidCryptoNative_SSLStreamGetApplicationProtocol in pal_sslstream.c will error if it is not supported.

Fixes #52965

* Feedback

Co-authored-by: Steve Pfister <steve.pfister@microsoft.com>

…er (#52795)

* Resolving ILLink warnings for Microsoft.Extensions.Configuration.Binder

* Addressing PR Feedback

…52978)

To avoid parts of the path like:

    artifacts\bin\native\net6.0-Browser-Debug-wasm\/dotnet.wasm

* add SslStream_RandomWrites_OK test

* update parameters

* feedback from review

* split RandomReadWriteSizeStream to separate file

* add comment

* feedback from review

* s/_maxSize/_maxChunkSize

JsonWriterHelper.Transcoding.cs has endian-dependent code that is
guarded via a #if BIGENDIAN.  However, nobody ever defines this
predefine (outside of System.Private.CoreLib) so this doesn't work.

Fixed by using BitConverter.IsLittleEndian like everywhere else.

* Fix creation of platforms and sources package

* Update Microsoft.Extensions.HostFactoryResolver.Sources.csproj

* COM related work and native host name changes

* FB

In NativeAOT scenario this allow to not rely on reflection to get GUID of the IDispatch, since it is well known. 
Related to dotnet/runtimelab#1142

…52966)

* Update dependencies from https://dev.azure.com/dnceng/internal/_git/dotnet-optimization build 20210518.8

optimization.linux-x64.MIBC.Runtime , optimization.windows_nt-x64.MIBC.Runtime , optimization.windows_nt-x86.MIBC.Runtime , optimization.PGO.CoreCLR
 From Version 1.0.0-prerelease.21267.7 -> To Version 1.0.0-prerelease.21268.8

* Update dependencies from https://dev.azure.com/dnceng/internal/_git/dotnet-optimization build 20210519.5

optimization.linux-x64.MIBC.Runtime , optimization.windows_nt-x64.MIBC.Runtime , optimization.windows_nt-x86.MIBC.Runtime , optimization.PGO.CoreCLR
 From Version 1.0.0-prerelease.21267.7 -> To Version 1.0.0-prerelease.21269.5

* Update dependencies from https://dev.azure.com/dnceng/internal/_git/dotnet-optimization build 20210520.4

optimization.linux-x64.MIBC.Runtime , optimization.windows_nt-x64.MIBC.Runtime , optimization.windows_nt-x86.MIBC.Runtime , optimization.PGO.CoreCLR
 From Version 1.0.0-prerelease.21267.7 -> To Version 1.0.0-prerelease.21270.4

Co-authored-by: dotnet-maestro[bot] <dotnet-maestro[bot]@users.noreply.github.com>

* Fixing nullability annotations on DateOnly and TimeOnly

* Fix nullability annotatations for formats parameter on TryParseExact

* Override BaseType in TypeRefTypeSystemType

BaseType is being used to determine whether the type is a value type or
class type. This meant that `dotnet-pgo merge` would always produce
metadata saying that all types were class types.

In practice, this meant that we had the following behavior:
```
.\dotnet-pgo.exe merge --input IBCTrace28800.mibc --output identity.mibc
.\dotnet-pgo.exe merge --input IBCTrace28800.mibc --input identity.mibc --output foo.mibc
Opening D:\dev\dotnet\dotnet-optimization\output\temp\IBCTrace28800.mibc
Opening D:\dev\dotnet\runtime\artifacts\bin\coreclr\windows.x64.Debug\dotnet-pgo\foo.mibc
Unhandled exception. System.Exception: Same type `[S.P.CoreLib]System.ReadOnlySpan`1` used as both ValueType and non-ValueType
   at Microsoft.Diagnostics.Tools.Pgo.TypeRefTypeSystem.TypeRefTypeSystemType.SetIsValueType(Boolean isValueType)
   at Microsoft.Diagnostics.Tools.Pgo.TypeRefTypeSystem.TypeRefTypeSystemContext.TypeRefSignatureParserProvider.GetTypeFromReference(MetadataReader reader, TypeReferenceHandle handle, Byte rawTypeKind)
```

The same problem would occur when using compare-mibc to compare a
merged mibc file with some of its constituents. These scenarios work
now.

* Re-abstract BaseType in MetadataType

* [mobile][libraries] Skip test suites failing on CI

* [libraries] Add more flakey test suite crashes

* [Android][libraries] Add DynamicChainTests.MismatchKeyIdentifiers failure

* Add issue to DynamicChainTests ActiveIssue

* [Android] Add more flakey test suite crashes for Android arm64

* [libraries] Add RunDisabledAndroidTests condition to be able to run tests on build lane

* [Android] Add even more flakey test suites that crash

* [iOS] Add System.Net.Security.Tests X509 Certificate not supported skips

* [libraries][Android] Add another round of test suite flakes for Android arm64

* Remove suites that had Package Installation Error failures

* [Android][libraries] Add more process crashed test suites

* Add more process crashed for Android arm and arm64

* Remove test suites that failed due to Package Installation Failure

* [Android][libraries] Add System.Diagnostics.Process.Tests active issue

* [Android] Add more flakey test suite crashing from json error

* [Android][libraries] JSON parsing exception section for suite skips

Co-authored-by: Mitchell Hwang <mitchell.hwang@microsoft.com>

In particular we need to set `GTF_DONT_CSE` so that CSE doesn't
introduce commas under `GT_JTRUE` nodes.

Fixes #52785.

Co-authored-by: Geoffrey Kizer <geoffrek@windows.microsoft.com>

* Implement Initialize on HashAlgorithm derived types.

* Add test for SHA CryptoServiceProviders

* Implement reset for HMAC

* Remove const

* Fix header.

[sigh]

* Remove ZeroMemory

* Fix performance of CSP hash providers.

…languages (#52992)

…Windows languages" (#53112)

This reverts commit b54dbaf.

* Integrate misc changes from nativeaot

* Fix RemoteStack serialization

* Delete confusing String.Empty comment

…languages (#53119)

* add NotNullWhen attribute

…otnet-optimization build 20210521.2 (#53124)

optimization.linux-x64.MIBC.Runtime , optimization.windows_nt-x64.MIBC.Runtime , optimization.windows_nt-x86.MIBC.Runtime , optimization.PGO.CoreCLR
 From Version 1.0.0-prerelease.21270.4 -> To Version 1.0.0-prerelease.21271.2

Co-authored-by: dotnet-maestro[bot] <dotnet-maestro[bot]@users.noreply.github.com>

…sssage (#53123)

Saves about 2k compressed for Blazor default template

* Remove redundant GeneratePackageOnBuild condition

)

Fixes #51338

* Specified the parameter name for ReinterpretHexAsDecimal

* Refactored "genUnsignedType", now "varTypeToUnsigned"

Renamed "genUnsignedType" to "varTypeToUnsigned" to conform to the existing
naming convention, moved its definition from "compiler.hpp" to "vartype.h",
made it a templated function like all the other "varType*" functions.
Deleted the equivalent but unused "varTypeSignedToUnsigned".

* Deleted "genSignedType" and renamed "varTypeUnsignedToSigned"

"genSignedType" had confusing semantics where it only returned the actual
signed type for TYP_UINT and TYP_ULONG. Deleted the function and made
the callsites explicitly request that behavior.
Also renamed "varTypeUnsignedToSigned" to "varTypeToSigned" for parity
with "varTypeToUnsigned" and made it a templated function.

* Made "genActualType" a templated function

* Made "genTypeStSz" a templated function

Also renamed the parameters for it and "genTypeSize" to be
consistent with "genActualType".

* Added a test

Verifying that checked '.un' casts from floats to small types are not treated as casts from unsigned types.

* Do not mark casts from FP types with GTF_UNSIGNED

It used to be that in the importer, whether the cast was to
be marked as GTF_UNSIGNED was decided exclusively based on
the incoming opcode. However, the flag only makes sense
for casts from integral sources, and it turns out morph
had a bug where it failed to clear this flag which resulted in
bad codegen.

The bug went as follows: "gtMorphCast" turns casts from an FP
type to a small integer into a chain of casts:
CAST(small integer <- FP) => CAST(small integer <- CAST(TYP_INT <- FP)).
On 32 bit platforms, the code failed to clear the GTF_UNSIGNED flag
from the original tree, which meant that the outer cast thought it
had TYP_UINT as the source. This matters for checked casts:
conv.ovf.i2.un(-2.0d), which is a legitimate conversion, was interpreted
wrongly as an overflowing one as the resulting codegen only checked the
upper bound via an unsigned compare.

The fix is two-fold: clear GTF_UNSIGNED for GT_CAST nodes with FP sources
on creation and unify the 64 bit and 32 bit paths in "gtMorphCast",
which, after the removal of GTF_UNSIGNED handling, are identical.

This is a zero-diff change across all SPMI collections for Windows x64, Linux x64,
Linux ARM64.

This **is not** a zero-diff change for Windows x86.
Instances of bad codegen have been corrected in some tests.

* Assert instead of normalizing

Instead of normalizing GTF_UNSIGNED for FP sources in "gtNewCastNode",
assert that it is not set in GenTreeCast's constructor and fix the
importer to respect that constraint.

- Use is/is not instead of ==/!=. Avoids overhead from operator overloading
- Pass ListBuilder as ref instead of out. Avoids redundant initialization to default.
- Use HashSet instead of Dictionary.

Co-authored-by: Ben Adams <thundercat@illyriad.co.uk>

…3159)

fixes #53147

…20.1 (#53013)

[main] Update dependencies from dotnet/emsdk

…ess dotnet/hotreload-utils (#53138)

[main] Update dependencies from dotnet/arcade dotnet/icu dotnet/xharness dotnet/hotreload-utils

* add NotNullWhen attribute

* add usings

I missed the extra `Activator` in Activator.RuntimeType.cs (the rest are in Activator.cs). This was flagged on the NativeAOT side.

Also missed the APIs on `ModuleHandle` that I found by accident just now.

* Disabled failing HTTP/3 tests.

* The test disabling move to code for abstract bases.

* Change password

* Change another occurence

#53180)

…otnet-optimization build 20210523.4 (#53170)

optimization.linux-x64.MIBC.Runtime , optimization.windows_nt-x64.MIBC.Runtime , optimization.windows_nt-x86.MIBC.Runtime , optimization.PGO.CoreCLR
 From Version 1.0.0-prerelease.21271.2 -> To Version 1.0.0-prerelease.21273.4

Co-authored-by: dotnet-maestro[bot] <dotnet-maestro[bot]@users.noreply.github.com>

* Stringify RMWStatus for the dump

* Use a simpler switch-based implementation

* Made the string into a description

…ile enumerating (#52749)

* Fix: Avoid throwing on FileSystemEntry.Initialize

* Add unit tests that verify cyclic symbolic links

* Fix Windows-specific unit test failures

* Use OperatingSystem.IsWindows()

* CHange 'Assert.Equal(1, ' to 'Assert.Single('

* Rename helper method that creates self referencing symlink

* Spacing

* ConditionalClass for CanCreateSymbolicLinks

* ConditionalClass does not work in browser/ios/android, use ConditionalFact/ConditionalTheory

Co-authored-by: carlossanlop <Carlos Sanchez carlossanlop@users.noreply.github.com>
Co-authored-by: carlossanlop <carlossanlop@users.noreply.github.com>

…tests (#53172)

- #52938 was incomplete
- see also dotnet/aspnetcore#32930

* Update testing docs with x86 instructions

* Apply suggestions from code review

Co-authored-by: Santiago Fernandez Madero <safern@microsoft.com>

* add more examples

* Apply suggestions from code review

Co-authored-by: Dan Moseley <danmose@microsoft.com>

* Update docs/workflow/testing/libraries/testing.md

Co-authored-by: Santiago Fernandez Madero <safern@microsoft.com>

Co-authored-by: Santiago Fernandez Madero <safern@microsoft.com>
Co-authored-by: Dan Moseley <danmose@microsoft.com>
Co-authored-by: Eric StJohn <ericstj@microsoft.com>

Don't copy files from an LLVM header and library directory to
`artifacts/obj/mono` if the directory was supplied as a user-specified
`MonoLLVMDir` or `MonoAOTLLVMDir` property.

…53176)

As a result of dotnet/xharness#605, the tests should be good to run

Fixes #52471

…s* packages. (#52741)

* enabling the new validation on extensions packages

* use most recent version namespace fixes

* use the new pacakge version with the path fix

* editing the comments

* Hot Reload: test on WebAssembly

   1. Always build the assemblies in the ApplyUpdate/ subdirectory without optimization, with debug info.  Hot reload depends on it.
   2. Pass the required environment variable to the runtime via xharness to enable support for applying updates.

* Add ApplyUpdate test assemblies to test project linker descriptor

* Fix wasm EnableAggressiveTrimming lane

…53135)

* add NotNullWhen attribute

* add usings