On Fri, Sep 14, 2012 at 4:52 PM, Segher Boessenkool <seg...@kernel.crashing.org> wrote: >>> I don't think TARGET_MFCRF is correct. For example, if you use >>> -mcpu=powerpc64 (which doesn't set this flag) you will get code >>> that does not run on the newer machines. >> >> Sorry, but it seems to be working here... >> I explain how I tested this in the end of the email. > > David tells me all current CPUs actually do support the MFTB insns > just fine, so that there is no problem.
There is no ideal solution and this method will work on all PowerPC targets with a combination of GCC and Binutils support., so I think this is the best we can do. Thanks, David
