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JIT: Support general inlining in runtime async - #131538

Merged

jakobbotsch merged 100 commits into

dotnet:mainfrom

jakobbotsch:async-inlining

Aug 14, 2026

Commits on May 13, 2026
- JIT: Use an indicator variable "did resume?" in runtime async
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  41bfc51
- Fix
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- Comment
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- Copilot feedback
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Commits on May 15, 2026
- Generalize
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  6564c12
- Fixes
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  73187af
- JIT: Move invariant nodes and LCL_VARs in LiftLIREdges
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  d13f065
- Fix
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  e5b707e
- Run jit-format
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Commits on Jul 27, 2026
Commits on Jul 28, 2026
- JIT: Address async transformation review feedback
  
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- JIT: Allow invariant async pseudo-args when reusing suspensions
  
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  3a37708
Commits on Jul 29, 2026
- Merge remote-tracking branch 'origin/async-indicator' into async-inlining
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- JIT: Fix LIR corruption when storing async awaiter into continuation
  
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  545d8bd
- JIT: Add design document for general runtime async inlining
  
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  673390a
- Add AsyncHelpers.IsOnRightContext and expose it and RestoreExecutionContext to the JIT
  
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  dd130c3
- Add AsyncHelpers.SwitchContext and expose it to the JIT
  
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  7623742
- JIT: Add continuation members for inlined async frames
  
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  27edc8f
- JIT: Add JitAsyncInlining knob and give inlinee awaits their own contexts
  
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  80bbc3d
- JIT: Detect whether an async body may suspend, and skip OSR for general async inlining
  
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  fe0ae8b
- Use a purpose-built helper for restoring an inlined frame's ExecutionContext
  
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- JIT: Apply OSR async context handling to the root frame only
  
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  5ca846e
- JIT: Do not generally inline async calls that may suspend inside a try region
  
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  110df7e
- JIT: Emit post-inline IR for an inlined async frame returning to its caller
  
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  65fdb57
- JIT: Carry enclosing inlined frames' context values on async calls
  
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  117822b
- JIT: Run enclosing inlined frames' context handling on suspension
  
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  8103025
- Add tests for context handling across inlined async frames
  
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  d6c80dd
- Add OSR coverage for async inlining, and correct an earlier OSR claim
  
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  9911625
- JIT: Support cloning GT_CONTINUATION_MEMBER_OFFSET
  
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  34a8784
- Merge remote-tracking branch 'upstream/main' into async-inlining
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  f3a00bf
- Enable by default for testing
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- Fix
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  096e368
Commits on Jul 30, 2026
- Merge remote-tracking branch 'upstream/main' into async-inlining
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- JIT: Take inlined frame suspension values from the IR, not a side table
  
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  0d86ed6
- JIT: Remove sharing of inlined frame suspension tails
  
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  3447a52
Commits on Jul 31, 2026
- JIT: Emit the inlined async frame transition as calls rather than IR
  
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  036133c
- JIT: Merge the inlined async frame transition into a single helper call
  
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  ce2aec6
- Make RestoreInlinedFrameContexts inlinable
  
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  6134f4e
- JIT: Make the inlined async frame transition call an inline candidate
  
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  38e42b5
- Remove AggressiveInlining from RestoreInlinedFrameContexts
  
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  6962878
- JIT: Do not add context pseudo-args to the inlined frame transition call
  
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  9263050
- Drop redundant casts in RestoreInlinedFrameContexts
  
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  285d6d9
- JIT: Derive the enclosing async frame chain from the inlining call
  
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  27aac9f
Commits on Aug 4, 2026
- Merge remote-tracking branch 'upstream/main' into async-inlining
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  0b9d692
- JIT: Store the resumed indicator with its own type
  
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  871525e
Commits on Aug 5, 2026
- JIT: Do not require the inlined frame transition IR to survive optimization
  
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  cbfae81
- JIT: Do not mark an async call no-return because its callee has no ret
  
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  9c29bac
- JIT: Mark the caller resumed from the inlined frame's context restore handler
  
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  7d2c077
- Document propagating the resumed indicator through the inserted fault
  
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  706bd46
- JIT: Reject async inlining into a protected region of the caller
  
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  fe6cdf9
Commits on Aug 6, 2026
- Make the AOT toolchains aware of the async inlining helpers
  
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  d719607
- JIT: Add an inlining stress mode for general runtime async inlining
  
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  e15869d
- JIT: Pick the async inlining stress candidates by scanning the IR
  
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  0f06785
- JIT: Note why async inlining stress leaves CALLEE_MAXSTACK alone
  
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  158f1c9
- JIT: Mark inlinees async or sync in the inline tree of an async root
  
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  bfd7f0c
- TEMPORARY: enable async inlining stress by default
  
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  fb3eea1
Commits on Aug 7, 2026
- Merge remote-tracking branch 'upstream/main' into async-inlining
  
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  c77ded0
- Do not inline async callees into methods that cannot be resumed
  
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  ca58b34
- Trim the resumed indicator fault section in the async inlining design doc
  
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  1094e68
- Fixes
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  917fe31
Commits on Aug 10, 2026
- JIT: Clean up the continuation member abstraction
  
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  f3155fc
- Merge remote-tracking branch 'upstream/main' into async-inlining
  
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  bdeea1c
- Stop asserting that the JIT cannot inline awaiting async callees in crossgen2
  
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  620a519
- Add a test for inlining the async version of a non-async method
  
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  807aac5
Commits on Aug 11, 2026
- Describe the async pseudo-args in wellknownargs.h
  
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  b261e18
- Build the enclosing async frame chain when compiling the inlinee
  
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  a09d07a
- Only capture the enclosing async frames on the first suspension
  
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  d3cedf4
- Do not let async inlining stress reject force inlines
  
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Commits on Aug 12, 2026
- Queue instead of running inline in the async tests' synchronization contexts
  
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  00edc04
- Honor the caller's await when capturing an inlined async frame transition
  
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  661e468
- Format the async frame transition IR helper
  
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  bbff8e5
- Stop pinning tiering in the async inlining tests
  
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  adc347a
- Capture inlined frames' async context locals on suspension
  
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  1eed98e
- Revert "Capture inlined frames' async context locals on suspension"
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  8711601
- Give an inlined async version's await the enclosing frame's contexts
  
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  f806c8a
- Remove redundant async version assert from the synthesized tail await
  
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  7ada158
- JIT: Make the async inlining stress decision part of the policy
  
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  d4057e2
- Restructure no-return check
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  c7c714f
- Fix null dereference in the no-return check for the prejit root
  
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  9cd4108
- JIT: Port async inlining stress feedback from dotnet/runtime#132223
  
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  1da03f5
- Let ldvirtftn awaits in an inlinee keep their own async contexts
  
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  174621e
- Merge remote-tracking branch 'upstream/main' into async-inlining
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  4ff3018
- TEMPORARY: Fix the INS_FLAGS casing that breaks the xarch JIT build
  
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  8bfc9d7
- Merge remote-tracking branch 'upstream/main' into async-inlining
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Commits on Aug 13, 2026
- Add the missing license header to the inlined frame exceptions test
  
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  011c130
- Remove the comment left behind by the async context out parameter
  
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  74be420
- JIT: Address review feedback on async inlining comments
  
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  1909a0e
- JIT: Disable async inlining and its stress mode by default
  
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  be84195
- Restore IL SDK in GitHub_130437.csproj
  
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  7eb93c5
- Remove unused ComputeRuntimeLookupForAwaitAwaiterInContinuationCall
  
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  ec43b71
- Merge remote-tracking branch 'upstream/main' into async-inlining
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  1cb7a63
- Avoid copy propagating only-suspension-used locals
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  7af34c1
- JIT: Check all restore clauses for exceptional flow at suspension points
  
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Commits on Aug 14, 2026
- JIT: Make the call site specific async inline rejections call site observations
  
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  f3a1b40
- Address feedback
  
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  cc44070
- Another comment
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- JIT: Do not register continuation members after the layout is created
  
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  9e88aaa

Commits

Commits on May 13, 2026

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