On 3/9/21 12:20 PM, Torbjörn Granlund wrote: > I applied patch 1/4 and 2/4 with modifications. > Please take a look at the repo code when you have the time.
Thanks! One minor proposal (patch to follow): Some versions of GCC only accept the -march=arch<nr> variant of the most recent CPU level they support (e.g., GCC-9 accepts -march=arch13 but not -march=z15; 13 as in the 13th edition of the Principles of Operations that describe the ISA extensions; both parameters are equivalent in later versions of GCC). > The main change I made to your suggested change is that I added z14 and > z15 to the recognised cpu types. I also made z13 a fallback for z14 (if > the latter is not understood by tools), and analogously made z14 and z13 > fallbacks for z15. That absolutely makes sense. When I wrote my patches initially, it was not yet clear that it is worthwhile to differentiate. > I don't know how relevant the 31-bit ABI is today. I do not plan to > write any new asm for that, and so did not add special paths for newer > CPUs for that ABI. Vector extensions are only available in 64-bit / z/Architecture mode, and I will focus on those for now. Marius -- Marius Hillenbrand Linux on Z development IBM Deutschland Research & Development GmbH Vors. des Aufsichtsrats: Gregor Pillen / Geschäftsführung: Dirk Wittkopp Sitz der Gesellschaft: Böblingen / Registergericht: Amtsgericht Stuttgart, HRB 243294 _______________________________________________ gmp-devel mailing list gmp-devel@gmplib.org https://gmplib.org/mailman/listinfo/gmp-devel
