On Nov 20, 2007, at 11:54 AM, Scott Wood wrote: > On Mon, Nov 19, 2007 at 09:36:57PM -0600, Kumar Gala wrote: >> isel (Integer Select) is a new user space instruction in the >> PowerISA 2.04 spec. Not all processors implement it so lets emulate >> to ensure code built with isel will run everywhere. > > Given that the instruction is meant to be a performance enhancement, > we should probably warn the first few times it's emulated, so the user > knows they should change their toolchain setup if possible.
The same is true of mcrxr, popcntb, and possibly string ld/st. Feel free to submit a patch that warns about their usage. - k _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
