efriedma added a comment. The LLVM backend currently assumes every CPU is Pentium-compatible. If we're going to change that in clang, we should probably fix the backend as well.
================ Comment at: lib/Basic/Targets/X86.h:472 + CPUKind Kind = getCPUKind(Opts.CPU); + if (Kind >= CK_i586 || Kind == CK_Generic) + MaxAtomicPromoteWidth = MaxAtomicInlineWidth = 64; ---------------- What exactly does "CK_Generic" mean here? Under what circumstances does it show up? We should have a specific default for every supported target, if user doesn't specify a CPU with -march. Repository: rC Clang https://reviews.llvm.org/D42154 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
