[all-commits] [llvm/llvm-project] 7d812d: [Clang] Retain constructor/destructor variants whe...

[Zaara Syeda via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 7d812d2b8aad397ed65a664ca2304500ba311b3f
      https://github.com/llvm/llvm-project/commit/7d812d2b8aad397ed65a664ca2304500ba311b3f
  Author: Zaara Syeda <syzaara at ca.ibm.com>
  Date:   2026-09-30 (Wed, 30 Sep 2026)

  Changed paths:
    M clang/docs/ReleaseNotes.md
    M clang/lib/CodeGen/ItaniumCXXABI.cpp
    M clang/test/CodeGen/keep-inline-functions.cpp
    M clang/test/CodeGenCXX/attr-used.cpp

  Log Message:
  -----------
  [Clang] Retain constructor/destructor variants when symbol must be kept (#226572)

With -mconstructor-aliases, complete constructor and destructor variants
with discardable-if-unused linkage can be silently replaced in the IR
(RAUW) rather than emitted as distinct symbols. This prevents
-fkeep-inline-functions and `__attribute__((used))` from retaining the
complete (C1/D1) variants.

Skip RAUW when the declaration requires its symbol to be kept by
introducing structorSymbolMustBeRetained(), which returns true when`
__attribute__((used)) `is present or -fkeep-inline-functions is active
for an inline definition that is not available_externally.

Assisted-by: IBM Bob



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