search for: 0cd9e6b8

...LLVM Developers mailing list > LLVMdev at cs.uiuc.edu http://llvm.cs.uiuc.edu > http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20131203/0cd9e6b8/attachment.html>

Is it just me or would it be nifty if Clang emitted a warning message when it generates an "ud2" (UnDefined2) instruction. I know this is x86-specific, but it would be sort of nice to know up front. After all, the compiler knows perfectly well that it is outputting an "ud2" instruction and I'm pretty sure almost every programmer out there would like to share the unhappy