[clang] [clang][Sema] Propagate qualifiers during derived-to-base conversion (PR #127824)

@@ -3107,8 +3107,12 @@ Sema::PerformObjectMemberConversion(Expr *From, /*IgnoreAccess=*/true)) return ExprError(); - return ImpCastExprToType(From, DestType, CK_UncheckedDerivedToBase, - VK, &BasePath); + Quali

[clang] [llvm] [clang][CodeGen][AA] Add `!llvm.errno.tbaa` gathering int-compatible TBAA nodes (PR #125258)

antoniofrighetto wrote: Gentle ping, would be nice moving this forward. https://github.com/llvm/llvm-project/pull/125258 ___ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits

[clang] [llvm] [clang][CodeGen][AA] Add `!llvm.errno.tbaa` gathering int-compatible TBAA nodes (PR #125258)

antoniofrighetto wrote: > Sorry, can you back up and explain the root problem you're trying to solve? > You have a platform where we're emitting accesses to `errno` as if it weren't > an `int`? What does it look like in source? Oh, sorry for not providing context earlier. The reasoning behind

[clang] [llvm] [clang][CodeGen][AA] Introduce `!llvm.errno.tbaa` for errno alias disambiguation (PR #125258)

https://github.com/antoniofrighetto edited https://github.com/llvm/llvm-project/pull/125258 ___ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits

[clang] [llvm] [clang][CodeGen][AA] Introduce `!llvm.errno.tbaa` for errno alias disambiguation (PR #125258)

https://github.com/antoniofrighetto edited https://github.com/llvm/llvm-project/pull/125258 ___ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits

[clang] [llvm] [clang][CodeGen][AA] Introduce `!llvm.errno.tbaa` for errno alias disambiguation (PR #125258)

antoniofrighetto wrote: > > Oh, sorry for not providing context earlier. The reasoning behind is to > > allow certain optimizations involving errno-writing libcalls (marked as > > `memory(errnomem: write)`) to occur, if we are able to prove the involved > > memory location does not alias errno

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