Bring throw helpers to PUSH_COOP_PINVOKE_FRAME plan

[am11]

Fixes #116375.

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[am11]

@janvorli, JIT/Directed, JIT/CodeGenBringUpTests and Exceptions suites are now passing. I cannot repro the remaining win-x64 failures like add_r4:

# in powershell
> ./build.cmd clr+libs -rc Checked
> src/tests/build.cmd Checked -Dir JIT/Directed -Dir JIT/CodeGenBringUpTests -Dir Exceptions -Dir JIT/IL_Conformance /p:LibrariesConfiguration=Debug
> $CORE_ROOT=$env:CORE_ROOT="$pwd/artifacts/tests/coreclr/windows.x64.Debug/Tests/Core_Root"
> artifacts\tests\coreclr\windows.x64.Checked\JIT\IL_Conformance\IL_Conformance\IL_Conformance.cmd
...
END EXECUTION - PASSED
PASSED

CI is showing https://helix.dot.net/api/2019-06-17/jobs/36ba1a26-3370-47a0-a24a-e0b2d2e41006/workitems/IL_Conformance/console:

13:15:59.276 Running test: JIT/IL_Conformance/Old/Conformance_Base/add_ovf_u8/add_ovf_u8.dll
13:15:59.281 Passed test: JIT/IL_Conformance/Old/Conformance_Base/add_ovf_u8/add_ovf_u8.dll
13:15:59.402 Running test: JIT/IL_Conformance/Old/Conformance_Base/add_r4/add_r4.dll
Xunit.Sdk.EqualException: Assert.Equal() Failure: Values differ
Expected: 100
Actual:   0
   at Xunit.Assert.Equal[T](T expected, T actual, IEqualityComparer`1 comparer) in /_/src/arcade/src/Microsoft.DotNet.XUnitAssert/src/EqualityAsserts.cs:line 174
   at Program.<<Main>$>g__TestExecutor10|0_11(StreamWriter tempLogSw, StreamWriter statsCsvSw, <>c__DisplayClass0_0&)
13:16:00.027 Failed test: JIT/IL_Conformance/Old/Conformance_Base/add_r4/add_r4.dll
13:16:00.039 Running test: JIT/IL_Conformance/Old/Conformance_Base/add_r8/add_r8.dll
Xunit.Sdk.EqualException: Assert.Equal() Failure: Values differ
Expected: 100
Actual:   0
   at Xunit.Assert.Equal[T](T expected, T actual, IEqualityComparer`1 comparer) in /_/src/arcade/src/Microsoft.DotNet.XUnitAssert/src/EqualityAsserts.cs:line 174
   at Program.<<Main>$>g__TestExecutor11|0_12(StreamWriter tempLogSw, StreamWriter statsCsvSw, <>c__DisplayClass0_0&)
13:16:00.050 Failed test: JIT/IL_Conformance/Old/Conformance_Base/add_r8/add_r8.dll
13:16:00.063 Running test: JIT/IL_Conformance/Old/Conformance_Base/beq_r4/beq_r4.dll
13:16:00.241 Passed test: JIT/IL_Conformance/Old/Conformance_Base/beq_r4/beq_r4.dll

[am11]

OK with $env:DOTNET_TieredCompilation=0 it fails locally. Investigating..

[janvorli]

I am not aware of any case that would have the CONTEXT_FLOATING_POINT set and not have the MXCSR valid in the CONTEXT. We've never had such a problem and you have initialization of that in your new code to update CONTEXT from the TransitionFrame.

[am11]

Without 22571b2 and dd15723, one or more tests in JIT/Directed, JIT/CodeGenBringUpTests and Exceptions were failing (#123015 (comment)).

[janvorli]

I think the problem is likely caused by something else. I don't see how your change (as a whole) could introduce such a problem.