lenary added a comment. @jyknight I hear where you're coming from. I'll see what I can do about the psABI document.
In that ticket, it's mentioned that the Darwin ABI explicitly says that non-power-of-two atomic types should be padded and realigned, but I cannot find any documentation explaining this. That would be useful, given presumably GCC does have to pad/align on Darwin. Then the only outstanding question relates to zero-sized atomics, which GCC does not pad, but I think Clang has to pad to get the semantics correct, based on this comment: https://github.com/llvm/llvm-project/blob/master/clang/lib/AST/ASTContext.cpp#L2176 Repository: rG LLVM Github Monorepo CHANGES SINCE LAST ACTION https://reviews.llvm.org/D57450/new/ https://reviews.llvm.org/D57450 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
