Marshaling helpers for MarshalAs LPUTF8Str.

Commit migrated from https://github.com/dotnet/coreclr/commit/08dc81499cfb5b7e58bd366642d7920b5dbb8761

Cleaning up a bunch of warnings.

Commit migrated from https://github.com/dotnet/coreclr/commit/9dc0fd926d34ccb4fc9a50e1fa4d684682e777d6

Merge pull request dotnet/coreclr#4793 from tijoytom/master

UTF8 Marshaling support(UnmanagedType.LPUTF8Str)

Commit migrated from https://github.com/dotnet/coreclr/commit/72b1ea011f28c1897fa2a668f0676a075bdb6b6e

Fix ArgumentNullException messages passed as parameter names (dotnet/coreclr#2889)

Fixed several ArgumentNullExceptions that throw with the message as the parameter name, leading to potential confusion for developers.

Commit migrated from https://github.com/dotnet/coreclr/commit/ad2485b93ce14437c0dc8b4fb69b0a54177fe09f

Adjust relative offsets in UMThunkStub (dotnet/coreclr#4888)

* Adjust relative offsets in UMThunkStub

This commit updates the relative offsets inside UMThunkStub according to the recent changes in
UMThunkStub (for stack unwinding).

* Uses 'UMThunkStub_StackArgsSize' instead of 'UMThunkStub_StackArgsOffset'

This commit revises 'UM2MThunk_WrapperHelper' to use 'UMThunkStub_StackArgsSize'
instead of 'UMThunkStub_StackArgsOffset'.

Commit migrated from https://github.com/dotnet/coreclr/commit/7fe0fef10a3c9654673aff5366d97f3dc74a68e5

Merge pull request dotnet/coreclr#4713 from myungjoo/fix/4712

Match Inconsistent CMake/MSBuild Compiler Definitions 2

Commit migrated from https://github.com/dotnet/coreclr/commit/37ecae6b728a2673854aebc2c7737e90e53e70e0

Merge pull request dotnet/coreclr#4870 from RussKeldorph/illicense

Update license header in most .il files.

Commit migrated from https://github.com/dotnet/coreclr/commit/e3b5e14a65ffb20be986e540ba46da6b07440171

Merge pull request dotnet/coreclr#4886 from dotnet-bot/from-tfs

Merge changes from TFS

Commit migrated from https://github.com/dotnet/coreclr/commit/c90cc5bb715f1c0a63fb460469c75dcfa9716529

Fixed typo in jitinterface.cpp (dotnet/coreclr#4889)

Commit migrated from https://github.com/dotnet/coreclr/commit/d8c283a1187b22438da781b44a9d76a9b4fa2493

Merge pull request dotnet/coreclr#4883 from JohnChen0/r2r

Fix CrossGen to skip some methods that require generic dictionary

Commit migrated from https://github.com/dotnet/coreclr/commit/171f7133287ebbee24d6a7f193b13a9f959e9297

Merge pull request dotnet/coreclr#4829 from JohnChen0/master

Increase a test timeout

Commit migrated from https://github.com/dotnet/coreclr/commit/72d3f75684002eaf5f7b6df97d6e09c804aaa265

JIT-EE interface changes to support CoreRT

- Add flags and constants for reverse PInvoke transitions (https://github.com/dotnet/corert/issues/611)
- Add new multi-dim array constructor that does not use varargs

[tfs-changeset: 1603336]

Commit migrated from https://github.com/dotnet/coreclr/commit/3371367a399b87d637e52dba94eb252dcc3c6eb1

Fix call to GetSortHandle (dotnet/coreclr#4882)

GlobalizationNatvie_GetSortHandle takes a UTF8 encoded string for the
locale name we want to construct a handle to, which is passed to ICU to
open some locale data.

We converted the UTF-16 encoded locale name to UTF8 in managed code, but
neglected to actually ensure the resulting value was null terminated.

Fixes dotnet/coreclr#4784

Commit migrated from https://github.com/dotnet/coreclr/commit/12b3b54bcc1bfa08c53a3e760ef39916a978ec93

Merge pull request dotnet/coreclr#4865 from BruceForstall/JitDumpAssertPtrs

Don't print pointers to the JitDump

Commit migrated from https://github.com/dotnet/coreclr/commit/9eba7d3493796a6994264d27d4b82536d6eeb464

Merge pull request dotnet/coreclr#4866 from AlexGhiondea/mscorlibUpdates

Create facade and reference assembly for mscorlib.

Commit migrated from https://github.com/dotnet/coreclr/commit/96b82198d8217b9b2c12f4e97e7085bd32805ace

Merge pull request dotnet/coreclr#4867 from AndyAyersMS/FixBenchmarkNames

Fix class names for benchmarks

Commit migrated from https://github.com/dotnet/coreclr/commit/7de0e76ac9aed89ff7c9b677bc368b2e3dcf1452

Merge pull request dotnet/coreclr#4864 from dotnet-bot/from-tfs

Merge changes from TFS

Commit migrated from https://github.com/dotnet/coreclr/commit/9ee4304bc172316c7c55b013e134c8dfd30b3929

Fix CrossGen to skip some methods that require generic dictionary

Resolves issue dotnet/coreclr#4801.

Commit migrated from https://github.com/dotnet/coreclr/commit/9f5d9d4f925db0cf7793322921007f6c4ccc45ad

Taking care of review comments.
Let out some of the review comments
since they are optimizations.

Commit migrated from https://github.com/dotnet/coreclr/commit/515a28b8ab33675011af9923bb5b6dfedf5e3935

Update license header in most .il files.

Commit migrated from https://github.com/dotnet/coreclr/commit/32832c1b23205e06c11262b21f0d0c3c2031642e

Fix class names for benchmarks

Fix a couple of class names for benchmarks so they more accurately
describe the benchmark.

Commit migrated from https://github.com/dotnet/coreclr/commit/9b5b198b3b1dda78b56ba3558b365d6e86ed0fce

Merge pull request dotnet/coreclr#4862 from RussKeldorph/pending3

Fix conv_ovf_i8_i test

Commit migrated from https://github.com/dotnet/coreclr/commit/530acab950de31fb58e41c33be80dc2664791b31

Create the project that will generate the facade project

Commit migrated from https://github.com/dotnet/coreclr/commit/76db478df55b14179bc32eee781c42e6d3bef1bd

Create a reference assembly for mscorlib

Commit migrated from https://github.com/dotnet/coreclr/commit/bf91aa9bba4df84d6cf39f117ac8ae01aeecc041

Don't print pointers to the JitDump; output the assertion bitvector as a string.

Commit migrated from https://github.com/dotnet/coreclr/commit/f8d07e361e640593ec9286a724a184b9cac12085

Merge pull request dotnet/coreclr#4852 from mikedn/lsra-reftype

Define LSRA's RefType enum via macros

Commit migrated from https://github.com/dotnet/coreclr/commit/0f444338415b9f92bde9b3658803fbac318f504f

Let all signals be unblocked on Unix (dotnet/coreclr#4863)

This change removes blocking of all of the 17 signals that we were
blocking. I have looked at the default behavior of their handlers
and we should be fine with it.

Commit migrated from https://github.com/dotnet/coreclr/commit/2edd715867b82ba73c9db4192986104ffc6a936d

Fix desktop build break.

[tfs-changeset: 1603043]

Commit migrated from https://github.com/dotnet/coreclr/commit/8f602a4f297caa0f4b9e25c5d814a1ed22b1fbee

Increase a test timeout

Test case tests/src/GC/Regressions/v2.0-beta2/462651 occasionally fails
due to time out (see issue dotnet/coreclr#3691). Mark it with IsLongRunningGCTest.

Commit migrated from https://github.com/dotnet/coreclr/commit/1ec4df87d931ccaf7e054aefd4d0192325264041

Merge pull request dotnet/coreclr#4828 from AlexGhiondea/systemprivatecorelib

Create System.Private.CoreLib assembly

Commit migrated from https://github.com/dotnet/coreclr/commit/ff6b48c1c5a6572944659209a06ccca0e82d2154

Merge pull request dotnet/coreclr#4837 from rahku/crossgen

Helpers for ReadyToRun

Commit migrated from https://github.com/dotnet/coreclr/commit/b3597a00be5cfb6a6a40a4c07e9eb14604fb489e

[Arm64] Helpers for ReadyToRun

Commit migrated from https://github.com/dotnet/coreclr/commit/559719a62aa7134da929d22f40c3c772e5d06348

Define LSRA's RefType enum via macros

Commit migrated from https://github.com/dotnet/coreclr/commit/ffc45dd5754e87bcd3c78380bac10ae7a10f66dd

Fix conv_ovf_i8_i test

Test has at least four problems:
- It assumes native int = int32, so disable it for 64-bit
- It is just wrong in a couple of its assumptions about when overflow
  happens during unsigned conversions.
- On success, it returns 0xAAAA instead of the commonly accepted 100
- It has no copyright header

Also piggybacking a copyright fix for rem_r4.il that I missed earlier

Commit migrated from https://github.com/dotnet/coreclr/commit/d496eb2dc41c895a855bc216fafa81f30f5e8ee2

Merge pull request dotnet/coreclr#4834 from gkhanna79/RemoveSxSJIT

Cleanup sxsJitStartup from codemanager

Commit migrated from https://github.com/dotnet/coreclr/commit/d3ff29a3e359b60c4c2fc0e21c1d6c99999157ea

Fix incremental build restore: move generated test_runtime project.json to bin (dotnet/coreclr#4764)

* Move generated test_runtime project.json to bin.

* Update helix tasks to point to moved test_runtime files.

* Remove unnecessary TestRuntimeDependenciesJson property.

Commit migrated from https://github.com/dotnet/coreclr/commit/388d58c3ff5e0792d6a4f7b7d00474f3f9b513df

Do NOT overwrite the stack frame pointer (dotnet/coreclr#4857)

CallEHFunclet currently overwrite the stack frame pointer (R7) while
recovering the registers.

This commit revises CallEHFunclet not to overwrite R7 when recoverint
the registers.

Commit migrated from https://github.com/dotnet/coreclr/commit/c55a8bd0b5949d5ed70c54a41aaab7d7b95fd8e5

Linux/ARM: fix stack alignment breaks (dotnet/coreclr#4858)

ehhelper.S: the function no more requires dummy stack add.
memcpy.S: C_FUNC(memcpy) has misaligned stack.
  (memcpy.S is not directly related with the issue dotnet/coreclr#4779.
  However, this requires the same fix with ehhelper.S)

Fix dotnet/coreclr#4779

Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Commit migrated from https://github.com/dotnet/coreclr/commit/6acc1053342b308ab8f6e6f3c979d82a60641bdc

Merge pull request dotnet/coreclr#4845 from RussKeldorph/pending

Fix some tests where the only problem was incorrect retval

Commit migrated from https://github.com/dotnet/coreclr/commit/8ac5753f1bc07a0ee7daf6951d700261b6c23247

Update unix-test-instructions.md

Updated run coreclr tests instructions for Linux. Included the new semicolon separated paths for the coreFxBinDir.

Commit migrated from https://github.com/dotnet/coreclr/commit/6b92cff66f26c98bb3be88562626faaa54646118

Fix some tests where the only problem was incorrect retval

The following tests return values other than 100 on success.  Modify the
harness to expect the values that they return:
```
JIT\jit64\regress\vsw\102754\test1\test1.cmd
JIT\Regression\CLR-x86-JIT\V1-M09\b16102\b16102\b16102.cmd
```
The following test is identical to `test1` in the same directory.  Delete
it.
```
JIT\jit64\regress\vsw\102754\test2\test2.cmd
```
`rem_r4` returns a non-Unix-compatible 0xAAAA (>255).  Change it to the
standard 100.
```
JIT\IL_Conformance\Old\Conformance_Base\rem_r4\rem_r4.cmd
```
The following were using the non-functional Environment.ExitCode.
Switched to Environment.Exit(Environment.ExitCode):
```
JIT\Methodical\switch\switch1\switch1.cmd
JIT\Methodical\switch\switch10\switch10.cmd
JIT\Methodical\switch\switch11\switch11.cmd
JIT\Methodical\switch\switch2\switch2.cmd
JIT\Methodical\switch\switch3\switch3.cmd
JIT\Methodical\switch\switch4\switch4.cmd
JIT\Methodical\switch\switch5\switch5.cmd
JIT\Methodical\switch\switch6\switch6.cmd
JIT\Methodical\switch\switch7\switch7.cmd
JIT\Methodical\switch\switch8\switch8.cmd
JIT\Methodical\switch\switch9\switch9.cmd
JIT\Methodical\tailcall\_il_dbgrecurse_ep_void\_il_dbgrecurse_ep_void.cmd
JIT\Methodical\tailcall\_il_dbgtest_void\_il_dbgtest_void.cmd
JIT\Methodical\tailcall\_il_relrecurse_ep_void\_il_relrecurse_ep_void.cmd
JIT\Methodical\tailcall\_il_reltest_void\_il_reltest_void.cmd
JIT\Regression\CLR-x86-JIT\V1-M12-Beta2\b65423\b65423\b65423.cmd
JIT\Regression\CLR-x86-JIT\V1.2-M01\b08046\b08046\b08046.cmd
```
Note that `b08046.cmd` is left disabled because it is still failing.

Commit migrated from https://github.com/dotnet/coreclr/commit/fc4497b4679c4282b9e30bedf2c20060033cf437

Merge pull request dotnet/coreclr#4773 from kouvel/CardTableGrowFix3

Fix recently introduced timing issue when growing the card table

Commit migrated from https://github.com/dotnet/coreclr/commit/74798b5b95aca1b27050038202034448a523c9f9

ARM: Fix SOS stack dump command failure (dotnet/coreclr#4774)

Dumping address pointer for 32bit system needs adjusting for current implementation
while it assumes %p argument is 64bit. This patch changes (ULONG64) casting to SOS_PTR()
so that it will be safe for both 64 and 32bit.
This will fix DumpStack and EEStack segmentation fault problem.

Related issue: dotnet/coreclr#4672

Commit migrated from https://github.com/dotnet/coreclr/commit/70cfa355947ed82f7de8a56cac3bd38571cebfa5

Disable flaky test (dotnet/coreclr#4846)

Commit migrated from https://github.com/dotnet/coreclr/commit/e0df3ac5e4f6637f16160058eb92cdd935140fa0

RyuJIT - throughput improvements, PInvoke transitions tweaks: (dotnet/coreclr#4842)

* RyuJIT - throughput improvements, PInvoke transitions tweaks:

- Minor compilation throughput improvements:
     - Avoid redundant calls to getMethodAttribs in impMarkInlineCandidate by reusing the value from CALL_INFO
     - Avoid redundant calls to getFunctionEntryPoint in codegen by reusing the value computed during lower
     - Stop checking CORINFO_FLG_NATIVE flag for inliner observations. It is dead flag, not set anywhere
- Tweaks for helper-based PInvoke transitions (used CoreRT only today):
     - Stop emitting CORINFO_HELP_INIT_PINVOKE_FRAME. Just having the two simple begin/end helpers is better.
     - Stop passing size of arguments in secret register.
     - Enable direct calls for PInvoke targets

* Codereview feedback

Commit migrated from https://github.com/dotnet/coreclr/commit/0c4d3d92fe75ec011f2d2e95df2ceedd301de8ef

Merge pull request dotnet/coreclr#4747 from krytarowski/netbsd-support-75

NetBSD: Fix build with LLVM-3.9

Commit migrated from https://github.com/dotnet/coreclr/commit/c2c1abcb71065dd530e0b38045547603c38d1e86

Merge pull request dotnet/coreclr#4843 from dotnet-bot/from-tfs

Merge changes from TFS

Commit migrated from https://github.com/dotnet/coreclr/commit/1b9c70ca3d8fc86adc2bd9272a248db17394cebc

Delete left-over uses of FeatureHostedBinder

[tfs-changeset: 1602735]

Commit migrated from https://github.com/dotnet/coreclr/commit/4152ddcbcc8013858d3eca2b3f8cbbe3356cf224

Merge pull request dotnet/coreclr#4742 from lemmaa/fix-unit-test-script

Fix 'runtest.sh' script

Commit migrated from https://github.com/dotnet/coreclr/commit/59a9008ddbf7ec8b83d1950bf51ffa3b09c372b5

Merge pull request dotnet/coreclr#4836 from sivarv/simdPromotion

Mark simd type vars as lvRegStruct accurately.

Commit migrated from https://github.com/dotnet/coreclr/commit/ff7a57969edbb6da4983e823b690ca2c124e15d6

Fixes multidim array Get Accessor for enum datatype (dotnet/coreclr#4808)

Commit migrated from https://github.com/dotnet/coreclr/commit/417a98fb0f82b1c05010cdc2c41eb5056f14541c

Use Buffer.BlockCopy in System.Reflection.Emit (dotnet/coreclr#4812)

Commit migrated from https://github.com/dotnet/coreclr/commit/8eec3c5ac8975734836c333187a2724d50bd9af9

Fix a typo in NetBSD documentation. (dotnet/coreclr#4841)

Commit migrated from https://github.com/dotnet/coreclr/commit/8bee2889882af4826e1955e3a64a060ec9e41063

Buffer.BlockCopy: Avoid double-typechecks for arrays of same type (dotnet/coreclr#4807)

Commit migrated from https://github.com/dotnet/coreclr/commit/9a67ab7affc527168578a6749410c64ec3233f55

Remove FEATURE_HOSTED_BINDER definition (dotnet/coreclr#4838)

The FEATURE_HOSTED_BINDER is always on so remove it from all the sources.

Commit migrated from https://github.com/dotnet/coreclr/commit/29fcfe2938e3890cd6fb302d2f8c6dabc1a09fc4

UTF8 Marshaling support(UnmanagedType.LPUTF8Str)

Usage: [MarshalAs(UnmanagedType.LPUTF8Str)] applied to string
and stringbuilder.

Implementation mostly use Encoding.UTF8 API to do the byte buffer
to string roundtripping. Introducing two new marshalers,
UTF8StringMarshaler and UTF8BufferMarshaler which handle string
and StringBuilder respectively. [Out] StringBuilder marshaling use
builder capacity as the buffer size ie (builder. Capacity + 1) *3
which is enough for any UTF8 char in BMP plane, infact Encoding.UTF8
mscorlib APIs use the same length.All marshaling flags(ThrowOnUnmapable,
defaultchar) are ignored since they do not make sense in UTF16 to UTD8
context.

The public contracts are not yet updated, the public contracts and
public marshaling API (Marshal.PtrToStringUtf8 and StringToHGlobalUtf8)
will be added once the implementation is in. The marshal api are anyway
going to be a wrapper around Encoding.GetBytes and GetChars.

Commit migrated from https://github.com/dotnet/coreclr/commit/e63ae93ca3fc777ff25930491332e07cf79a9ce3

Mark simd type vars as lvRegStruct accurately.

Commit migrated from https://github.com/dotnet/coreclr/commit/60d4c09a23dbc0e1ef5ccc348a05f6545bb6472d

Merge pull request dotnet/coreclr#4803 from pgavlin/RootBinDir

Add a `bindir` parameter to build.sh.

Commit migrated from https://github.com/dotnet/coreclr/commit/0ef1fc9aa3d65d41b5b9c8cd4911a1f8cdece049

Merge pull request dotnet/coreclr#4831 from pgavlin/gh2300

Move b12011 into testsUnsupportedOutsideWindows.

Commit migrated from https://github.com/dotnet/coreclr/commit/fbaa0827781be897a51b5d529cef305e569ca5cc

Merge pull request dotnet/coreclr#4826 from RussKeldorph/vararg

Move Windows-only vararg/arglist tests to the appropriate exclusion file

Commit migrated from https://github.com/dotnet/coreclr/commit/ef04d7d2083c8e6fb8f3cf6294f2ae06928dae10

Merge pull request dotnet/coreclr#4815 from AndyAyersMS/LegacyPolicyInlineLimit

Inliner: add JitInlineLimit check to LegacyPolicy under debug

Commit migrated from https://github.com/dotnet/coreclr/commit/5cdc97b5c80fe67f0ce06aced25b9d046e12a574

Merge pull request dotnet/coreclr#4770 from Maoni0/affi

enable affinity for GC threads and some bug fixes

Commit migrated from https://github.com/dotnet/coreclr/commit/726d1a3244b80bf963fd0d51e57d4bb90af1e426

Fix Windows x86 exception handling issue (dotnet/coreclr#4830)

This change fixes an exception handling issue that happens on x86 on Windows
when exception is raised in System.RuntimeType.MakeGenericType.
The problem was caused by GCPROTECT_HOLDER macro in RuntimeTypeHandle::GetTypeByName
that causes popping of GCFrame (and zeroing its m_next field) that's in the middle of the thread's frames list during
the stack unwinding.
That breaks the list and when UnwindFrames happen later and tries to walk the stack, the StackFrameIterator::NextRaw
asserts when checking the validity of the list.
The fix is to move the keepAlive to the managed caller of the RuntimeTypeHandle::GetTypeByName QCall, which removes
the need for the GCPROTECT_HOLDER.
Since it was the only usage of that holder and of the underlying FrameWithCookieHolder class, I've removed those.
In addition to that, I've modified COMModule::GetType and AssemblyNative::GetType to use the same pattern, since
they could also suffer from the problem the GCPROTECT_HOLDER was attempting to fix.

Commit migrated from https://github.com/dotnet/coreclr/commit/3c7e477ac50e50b616a64c72efb81388c045e63f

Cleanup sxsJitStartup from codemanager

Commit migrated from https://github.com/dotnet/coreclr/commit/c9cea125d28a9e465c37720a16427bcf88b03269

Merge pull request dotnet/coreclr#4690 from sejongoh/use_rax_for_ret_buf

Return RetBuf address via RAX for Windows 64

Commit migrated from https://github.com/dotnet/coreclr/commit/2308fbf2253abef97628bde2a04d8fb910ce1018

Merge pull request dotnet/coreclr#4795 from sivarv/simdret

[x64 Unix] Avoid SIMD types returned in two return registers from requiring to go through memory.

Commit migrated from https://github.com/dotnet/coreclr/commit/b3be35f379519120acd8427485524e92cf911918

Merge pull request dotnet/coreclr#4791 from kyulee1/fasttailcall

ARM64: Enable Fast Tail Call

Commit migrated from https://github.com/dotnet/coreclr/commit/06bc225c0117bbfd9ff31020e1f377ef33a561da

ARM64: Enable Fast Tail Call

Fixes https://github.com/dotnet/coreclr/issues/4420
Like x64, enable fast tail call but tail call opt is still off.
This means explicit tail call is converted to epilog + jmp IP0.
Tail call recursive/tail call via helper is still not enabled yet.

Commit migrated from https://github.com/dotnet/coreclr/commit/a9eee0c96fdb4eb8cc7c0312bb50bb923db177f4

Move b12011 into testsUnsupportedOutsideWindows.

This test requires COM interop.

Commit migrated from https://github.com/dotnet/coreclr/commit/4e0417947d47a5c632494353b943d44c33abdcc8

Add a `bindir` parameter to build.sh.

This parameter can be used to redirect the usual output path from
`./bin` to a different directory.

Commit migrated from https://github.com/dotnet/coreclr/commit/0e79232129f3a27305bc24141ff13dd54bc61e45

Merge pull request dotnet/coreclr#4814 from BruceForstall/FixGcRefAssert

Fix GC ref frame offset range assert

Commit migrated from https://github.com/dotnet/coreclr/commit/4c246c5b8182d284ded69c4a5bc48e09711f2438

Merge pull request dotnet/coreclr#4811 from BruceForstall/FixFunctionTrace

Fix COMPlus_JitFunctionTrace=1 to work better with NYI

Commit migrated from https://github.com/dotnet/coreclr/commit/f45cfa6dab8c5e40ebf613d98d1abf0a326727a5

Package System.Private.CoreLib in the Microsoft.NETCore.Runtime.CoreCLR package.

Commit migrated from https://github.com/dotnet/coreclr/commit/3fd0bcbb2717fe5944a808b8a2324807ad406e18

Create project that builds System.Private.CoreLib assembly.

This will contain the same sources as mscorlib but will have a different name.

Commit migrated from https://github.com/dotnet/coreclr/commit/c70a2a15643cbf4a49b52c949fdf184d87b77cd1

Merge pull request dotnet/coreclr#4822 from dotnet-bot/from-tfs

Merge changes from TFS

Commit migrated from https://github.com/dotnet/coreclr/commit/17549875be841b032770e2e11ad027986e44a549

enable affinity and numa for GC and some bug fixes

double the threshold for balancing onto a remote NUMA node - this was proven to be best with the asp.net benchmark.

enable cpu group

Commit migrated from https://github.com/dotnet/coreclr/commit/73dfed727374982f0ce8804d82d9ca993a4b8bf1

Merge pull request dotnet/coreclr#4806 from AndyAyersMS/FixInlineDump

Fix inline dump format issue

Commit migrated from https://github.com/dotnet/coreclr/commit/1d561e7878288c109fab5183447d50b869fe8663

Move Windows-only vararg/arglist tests to the appropriate exclusion file

Our position on vararg/arglist is that it is supported on Windows only, so
I'm repurposing dotnet/coreclr#1440 to simply express that position in the exclusion
files rather than removing the tests.

Fixes dotnet/coreclr#1440

Commit migrated from https://github.com/dotnet/coreclr/commit/6a267e9e8ee18589fbcc73db3d19405126d9533b

Merge pull request dotnet/coreclr#4797 from JohnChen0/master

Remove an assert in AssemblySpec::EmitToken

Commit migrated from https://github.com/dotnet/coreclr/commit/9269fceccf0f134d312189f16d04037fede9d276

Merge pull request dotnet/coreclr#4810 from BruceForstall/Fix4666

Mark EDX as trashed by the no-gc helper calls

Commit migrated from https://github.com/dotnet/coreclr/commit/a6c18c6d3c499087ac43cdb3bced708164600425

Merge pull request dotnet/coreclr#4819 from BruceForstall/FixRyujitX86CheckedTestRun

Disable tests which fail in a RyuJIT/x86 Checked build test run

Commit migrated from https://github.com/dotnet/coreclr/commit/f4256993552b302c72df0afbc425ff5c05a9b208

Merge pull request dotnet/coreclr#4821 from ellismg/fix-unix-builds

Fix conditional in Unix build definition

Commit migrated from https://github.com/dotnet/coreclr/commit/bf61fa87d857381dfeeca258d1d366d62faf39be

Fix conditional in Unix build definition

Commit migrated from https://github.com/dotnet/coreclr/commit/cc284fb9c0ac4c2efbf1395efdbe8d8e0978dc92

Disable tests which fail in a RyuJIT/x86 Checked build test run

Commit migrated from https://github.com/dotnet/coreclr/commit/0c29217d7f0de620248c30d2db92ce29af6858ef

Fix COMPlus_JitFunctionTrace=1 to work better with NYI

Commit migrated from https://github.com/dotnet/coreclr/commit/4eb10dbf742604906019931ac4b1540b451f7322

Fix GC ref frame offset range assert

In emitSetFrameRangeGCRs(), on x86, there is the following assert:
  assert(offsHi <  0);
This is saying that the highest offset of a stack frame gc reference
is negative w.r.t. the frame pointer. This is not quite true: the
highest offset is exclusive of the range (the lowest offset is inclusive).
I found a test case where the 'this' pointer, a gc ref, was located
immediately below the frame pointer, in range [ebp-4,ebp), so offsHi==0.

The reason we don't hit this more is because this assert is only in
the JitDump code (under #ifdef DEBUG and 'if (verbose)'). (This
also seems wrong.)

I changed the assert to (offsHi <= 0).

Commit migrated from https://github.com/dotnet/coreclr/commit/16ca4a20ddd03479e101cea0d74705f1a2791ae5

This change ports the support files from NetFxDev1. It doesn't change behavior yet. Adding a feature for the app context switch for path compat as we don't intend to use it in core.

[tfs-changeset: 1602284]

Commit migrated from https://github.com/dotnet/coreclr/commit/2ae90a015933dc85192b73c2bf8361cf59cef035

Inliner: add JitInlineLimit check to LegacyPolicy under debug

Adds the ability to limit the number of inlines done by the LegacyPolicy.
Useful in trying to binary search for inlines that cause correctness
issues.

This limit impacts inlining in all methods, so effective isolation may
also require use of JitNoInlineRange to hone in on the root method that
is the source of problems.

Commit migrated from https://github.com/dotnet/coreclr/commit/0feeb4ff48a6f0beb614ee2e3d3604e85dfbca27

Mark EDX as trashed by the no-gc helper calls

Fixes dotnet/coreclr#4666

Commit migrated from https://github.com/dotnet/coreclr/commit/f6796220664d3bfa4ea42d2ab86cf5a6e2edeae9

Fix inline dump format issue

Lost some implict casts to float when I updated SIZE_SCALE to an enum
constant, so now make the casts explicit.

Just impacts dump output.

Also, add a newline to LegacyPolicy dump to keep messages distinct.

Commit migrated from https://github.com/dotnet/coreclr/commit/9614277d4fb85970871678601c9ffe0c4cbc6a97

Return RetBuf address via RAX for Windows 64

The AMD64 native calling convention requires return buffer address to be
returned by callee in RAX. This changeset makes JIT follow this rule.
Especially, in case that a managed method returns a struct value to its
native caller, the caller reads a pointer to the return value from RAX.

Asm diffs show expected differences such as 'mov rax, reg' at the end of
functions and some different register assignments.

Commit migrated from https://github.com/dotnet/coreclr/commit/9b54e5ebee7838b3eb9c7cacbd9f66ac78dfb968

Merge pull request dotnet/coreclr#4800 from jashook/x86_ci_fix

Fix x86 netci changes to build correctly.

Commit migrated from https://github.com/dotnet/coreclr/commit/3ddd9c43821bf617621f87d8d1519229e7d3b789

Avoid SIMD type return values from requiring to go through
memory for returning.

Commit migrated from https://github.com/dotnet/coreclr/commit/75a96376d9b6760b63eefbc245572e9274eeb347

Fixup netci changes to build correctly.

Also more verbosely show which jit and arch the job is.

Commit migrated from https://github.com/dotnet/coreclr/commit/5aca558718d3d57686bc301315034e76324d242c

Merge pull request dotnet/coreclr#4782 from BruceForstall/NyiLongExTree

RyuJIT/x86: convert SBCG to NYI for multi-level expression trees

Commit migrated from https://github.com/dotnet/coreclr/commit/3496df6d9dbfa5fded802ab90b99a9545a43bc74

Merge pull request dotnet/coreclr#4792 from dagood/remove-core_root-workaround

Remove CORE_ROOT workaround

Commit migrated from https://github.com/dotnet/coreclr/commit/b0bbac3d22969796e0c424c22242f255c1cbe044

Following the review comments

Commit migrated from https://github.com/dotnet/coreclr/commit/9290b53960f368ab9b6356ad029cb3cab69a12c6

Remove an assert in AssemblySpec::EmitToken

AssemblySpec::EmitToken has a PRECONDITION that prohibits emitting AssemblyRef
tokens to WinMD files, except inside CrossGen. However, there are scenarios,
such as XML serialization, that need to emit such tokens. Thus this PRECONDITION
is removed.

Commit migrated from https://github.com/dotnet/coreclr/commit/c377b53dca090869ea10d95fe7098e70ac3c0847

Merge pull request dotnet/coreclr#4790 from jashook/x86_netci_two

Add ryujit x86 pr trigger.

Commit migrated from https://github.com/dotnet/coreclr/commit/22738816cf92bd763c3e993c8acdef0640f9428c

Merge pull request dotnet/coreclr#4767 from ramarag/VSD_ResolveWorker_indirection

[Arm64] Initialize indirection cell for delegates

Commit migrated from https://github.com/dotnet/coreclr/commit/f5c775dd83954f2e815e8c1b3adc8fc2cb7bfefb