Development open for Swift 5.5.3 for Linux and Windows

[mishal_shah]

Current plan is to release Swift 5.5.3 with following changes, please let me know if we are missing any changes.

llvm-project

• [5.5] X86: balance the frame prologue and epilogue on Win64 by compnerd · Pull Request #3810 · apple/llvm-project · GitHub (waiting for approval)
  • 330f7b75c2e X86: balance the frame prologue and epilogue on Win64
• [5.5] Headers: exclude `#include_next <stdatomic.h>` on MSVC by compnerd · Pull Request #3811 · apple/llvm-project · GitHub
  • 329321cd0be Headers: exclude #include_next <stdatomic.h> on MSVC

swift

• [5.5] Don't build arm64e slices of the back-deployed libswift_Concurrency.dylib by DougGregor · Pull Request #40858 · apple/swift · GitHub
  • bead2cdbcce Don't build arm64e slices of the back-deployed libswift_Concurrency.dylib.
• 🍒 [5.5] Add Initializers' AFPs by ktoso · Pull Request #40750 · apple/swift · GitHub
  • f506e5420f4 [TBD] Add initializers AFPs to TBD.
  • 36922aaca5a [TBD] Pass decl ref when adding AFP symbols.
  • 16ff49c0188 [IRGen] Give decl ref to LinkEntity::forAFP.
• 5.5 fix weak extended frame pointer flags by etcwilde · Pull Request #40044 · apple/swift · GitHub
  • ffcbdc6d540 Make it LinkOnceODRLinkage
  • 7af551cfa40 Fixing the strong imported async frame pointer flags
• use `compare_exchange_strong` to protect agianst spurious failures by DougGregor · Pull Request #40540 · apple/swift · GitHub (Test failure on Windows, checking with Zoe/Saleem)
  • a90c721042e use compare_exchange_strong to protect agianst spurious failures

swiftpm

• [5.5] Add automatic library product for SwiftPMDataModel by yonihemi · Pull Request #3912 · apple/swift-package-manager · GitHub
  • 1cf38af7 Add automatic library product for SwiftPMDataModel

No changes between swift-5.5.2-RELEASE and swift-5.5.3-RELEASE for following repositories

• cmark
• indexstore-db
• llbuild
• sourcekit-lsp
• swift-corelibs-foundation
• swift-corelibs-libdispatch
• swift-corelibs-xctest
• swift-driver
• swift-integration-tests
• swift-stress-tester
• swift-syntax
• swift-tools-support-core
• swift-xcode-playground-support