[all-commits] [llvm/llvm-project] cca4d6: Revert counted_by attribute feature (#75857)

[Bill Wendling via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: cca4d6cfd2a3780bb432e4f8234704d920dcce50
      https://github.com/llvm/llvm-project/commit/cca4d6cfd2a3780bb432e4f8234704d920dcce50
  Author: Bill Wendling <5993918+bwendling at users.noreply.github.com>
  Date:   2023-12-18 (Mon, 18 Dec 2023)

  Changed paths:
    M clang/docs/ReleaseNotes.rst
    M clang/include/clang/AST/Decl.h
    M clang/include/clang/AST/DeclBase.h
    M clang/include/clang/Basic/Attr.td
    M clang/include/clang/Basic/AttrDocs.td
    M clang/include/clang/Basic/DiagnosticSemaKinds.td
    M clang/include/clang/Sema/Sema.h
    M clang/include/clang/Sema/TypoCorrection.h
    M clang/lib/AST/ASTImporter.cpp
    M clang/lib/AST/DeclBase.cpp
    M clang/lib/AST/Expr.cpp
    M clang/lib/CodeGen/CGBuiltin.cpp
    M clang/lib/CodeGen/CGExpr.cpp
    M clang/lib/CodeGen/CodeGenFunction.h
    M clang/lib/Sema/SemaDecl.cpp
    M clang/lib/Sema/SemaDeclAttr.cpp
    M clang/lib/Sema/SemaExpr.cpp
    R clang/test/CodeGen/attr-counted-by.c
    M clang/test/CodeGen/bounds-checking.c
    M clang/test/Misc/pragma-attribute-supported-attributes-list.test
    R clang/test/Sema/attr-counted-by.c

  Log Message:
  -----------
  Revert counted_by attribute feature (#75857)

There are many issues that popped up with the counted_by feature. The
patch #73730 has grown too large and approval is blocking Linux testing.

Includes reverts of:
commit 769bc11f684d ("[Clang] Implement the 'counted_by' attribute
(#68750)")
commit bc09ec696209 ("[CodeGen] Revamp counted_by calculations
(#70606)")
commit 1a09cfb2f35d ("[Clang] counted_by attr can apply only to C99
flexible array members (#72347)")
commit a76adfb992c6 ("[NFC][Clang] Refactor code to calculate flexible
array member size (#72790)")
commit d8447c78ab16 ("[Clang] Correct handling of negative and
out-of-bounds indices (#71877)")
Partial commit b31cd07de5b7 ("[Clang] Regenerate test checks (NFC)")

Closes #73168
Closes #75173