rsmith added a comment. In D154658#4490468 <https://reviews.llvm.org/D154658#4490468>, @rjmccall wrote:
> Oh, this does matter on platforms using pointer authentication, because each > vptr field is signed with a constant discriminator derived from the name of > the class that introduced it. Oh, hm. I guess you have an out-of-tree patch for that? I've switched back to passing types into `GetVTablePtr`, and stopped using that from `emitExactDynamicCast` in favor of directly loading the vtpr after the `dynamic_cast<void*>`. You would need to disable the exact `dynamic_cast` optimization when pointer authentication is enabled for vptrs, but that should be a small patch. Repository: rG LLVM Github Monorepo CHANGES SINCE LAST ACTION https://reviews.llvm.org/D154658/new/ https://reviews.llvm.org/D154658 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
