This reverts commit b03e8478.

Merge stabilization into master

Non-Fatal Watson if ReiteratedVersionNumber matches when text does not.

Only collect archives in the case of aborted or failed runs.

Update what we archive after a run.

change telemetry reporting for rename

Only log formatting events in telemetry when they are enacted by the …

Fix crash if client completes the event queue before the compiler is finished with it.

Allow null Compilation in SymbolDistinguisher.Description.GetHashCode

Disable diagnostic service for projects that we know we don't have all information to provide good results.

Fix for 7845: add DynamicAttribute to event with dynamic type

Revert "Revert "Disable diagnostic service for projects that we know we don't have all information to provide good results.""

Port analyzer allocation fixes from master to stabilization

Fix race condition when generating simulated compilation events

Include HasValue check in BoundSwitchStatement

If the switch expression is a  Nullable<T>  a conditional branch is added for the  HasValue  check.
 That check was added as a separate  BoundStatement  outside of the  BoundSwitchStatement .
 If the lambda rewriter subsequently generated any display class instances, the allocations are added
 as a prologue to the rewritten switch statement but since the conditional branch is outside the switch
 statement, the branch skips the prologue, skipping the allocations. The change is to include the
 conditional branch in the  BoundSwitchStatement  so the branch occurs after the prologue.

[AskMode] Put `IOperation` behind a feature flag

don't assume all reference spans in an inline rename session are projected into the current view

Check file checksums to ensure no corruption occurred.

Add member visibility modifiers

Fix for #7809: check for use-site errors on attribute before synthesizing

Include HasValue check in BoundSwitchStatement so any display class allocation is moved outside of the check

No functional change here.

Removing the 'System.Diagnostics.Process' dependency from 'InteractiveFeatures'

Fix for #9167: async and iterator rewriters do not require optional attribute types

Fix for #9167: async and iterator rewriters do not require CompilerGeneratedAttribute or DebuggerNonUserCodeAttribute or DebuggerHiddenAttribute

allow cancelation exceptions through the PE stream diagnostic filter

Pool per-analyzer state instances across CompilationWithAnalyzers ins…

Watch xUnit processes for dumps in RunTests

Add skeleton assembly logging

Fix issue where we weren't offering 'generate variable'

Fixes #8358

Revert "Revert "Improve the Generate-Variable code-actions menu experience.""

Fixes: https://github.com/dotnet/roslyn/issues/6979

User scenario: Analysis might get skipped in the IDE for a symbol/partial declarations for a partial symbol with more than one definition in a single document.

Cause: When computing symbols declared in the tree to generate symbol declared events, we were adding duplicate entries if a symbol had more than one partial declaration in a tree. This meant that multiple threads might start performing symbol analysis on the same symbol, causing a race condition as driver doesn't expect duplicate events. Though we ensure not to make duplicate callbacks, we might end up missing on making some callbacks at times.

Fix: Compute only unique symbols from declarations in a tree.

Risk: None, it is a trivial fix.

Testing: Before the fix, I was able to repro the race condition and the assert consistently by running the flaky test in a loop for over 10k times. After the fix, it doesn't repro on running the same multiple times. A new unit test has also been added, though it did not fail consistently even before the fix.

Fixes #9462

This reverts commit f49c60bb. We
better undestand the root cause and thus we don't need this change.