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Improve GC stack scanning and GcInfoDecoder performance - #135807

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VSadov wants to merge 26 commits into

dotnet:mainfrom

VSadov:dec001

Open

Improve GC stack scanning and GcInfoDecoder performance#135807
VSadov wants to merge 26 commits into
dotnet:mainfrom
VSadov:dec001

Commits on Oct 14, 2026
- Avoid JitTokenToMethodRegionInfo for hot R2R frames in JitCodeToMethodInfo
  
  VSadov
  and
  Copilot
  committed
  6156856
- Cache GCInfoToken lazily in EECodeInfo
  
  VSadov
  and
  Copilot
  committed
  986853e
- Gate GetParamContextType in GcStackCrawlCallBack on generic context methods
  
  VSadov
  and
  Copilot
  committed
  c88843c
- Merge generic param context type, token, and prolog decoding into single decoder
  
  VSadov
  and
  Copilot
  committed
  66ed765
- Avoid eager EnsureCallerContextIsValid in CheckForSkippedFrames
  
  VSadov
  and
  Copilot
  committed
  4c72376
- Skip FP/vector state copy in EnsureCallerContextIsValid during GC root scans
  
  VSadov
  and
  Copilot
  committed
  2f0e030
- Use word reads and TrailingZeroCount in GcInfoDecoder bit-scanning loops
  
  VSadov
  and
  Copilot
  committed
  a69fb98
- Fix Checked/Debug build in StackFrameIterator::NextRaw assert
  
  VSadov
  and
  Copilot
  committed
  52ed104
Commits on Oct 15, 2026
- Add GC_ROOT_SCAN flag check in stackwalk.cpp
  
  VSadov
  and
  Copilot
  authored
  ccad1d1
- Encapsulate lazy EnsureCallerContextIsValid in caller-state accessors
  
  VSadov
  and
  Copilot
  committed
  f98d7da
- Require GC-safe points for legacy thread-abort redirection
  
  VSadov
  and
  Copilot
  committed
  1bb86a1
- Report generic loader allocators while enumerating GC references
  
  VSadov
  and
  Copilot
  committed
  148d7a1
- Address caller-context stack-walk review feedback
  
  VSadov
  and
  Copilot
  committed
  b05f4f4
Commits on Oct 20, 2026
- PR feedback (comment)
  VSadov
  committed
  e471c4b
- Report x86 generic loader allocators during GC enumeration
  
  VSadov
  and
  Copilot
  committed
  4c76afb
Commits on Oct 21, 2026
- Merge upstream/main into dec001
  
  VSadov
  and
  Copilot
  committed
  e1c46e3
- Fix x86 case
  VSadov
  committed
  e0608f7
- Document skipped-frame GC fast-path invariants
  
  VSadov
  and
  Copilot
  committed
  a138483
Commits on Oct 22, 2026
- Remove the fragile GC skipped-frame ownership fast path
  VSadov
  committed
  8b05fbc
Commits on Oct 23, 2026
- Apply batched suggestions from code review
  
  VSadov
  and
  jkotas
  authored
  4115afc
- build fix
  VSadov
  committed
  44b0d3c
- workaround for GC skipped-frame ownership fast path
  VSadov
  committed
  4ba0fba
Commits on Oct 27, 2026
- remove m_codeManFlags from StackFrameIterator
  VSadov
  committed
  91efd43
Commits on Nov 1, 2026
- Merge branch 'main' into dec001
  VSadov
  authored
  ce9e8bd
Commits on Nov 4, 2026
- Merge upstream/main into dec001
  
  VSadov
  and
  Copilot
  committed
  485ad0b
Commits on Nov 5, 2026
- back to "if (m_crawl.pFrame == FRAME_TOP)" early return only in GC walks.
  VSadov
  committed
  bab2eb5

Commits

Commits on Oct 14, 2026

Commits on Oct 15, 2026

Commits on Oct 20, 2026

Commits on Oct 21, 2026

Commits on Oct 22, 2026

Commits on Oct 23, 2026

Commits on Oct 27, 2026

Commits on Nov 1, 2026

Commits on Nov 4, 2026

Commits on Nov 5, 2026