craig.topper added a comment. Have you ran the tests all the way through to assembly and made sure we don't regress? If we do regress, I wouldn't hold up fixing this, but we should at least have bugs for what breaks.
================ Comment at: lib/CodeGen/CGBuiltin.cpp:7384 case X86::BI__builtin_ia32_undef512: - return UndefValue::get(ConvertType(E->getType())); + // The x86 definition of "undef" is not the same as the LLVM definition + // (PR32176). We leave the exercise of optimizing away an unnecessary zero ---------------- Do we want to leave a TODO here to maybe do something different when we have freeze? https://reviews.llvm.org/D30834 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
