Hi Tom, if I understand the patch correctly, -misa=sm_53 -mptx=3.1 will ...
On 08.02.22 13:57, Tom de Vries via Gcc-patches wrote:
Furthermore, using the -mptx option is a bit user-unfriendly. Say we want to compile for sm_80. We can use -misa=sm_80 to specify that, but then run into errors because the default ptx version is 6.3, which doesn't support sm_80 yet. ... Also add an error in case of incompatible options like "-misa=sm_80 -mptx=6.3": ... cc1: error: PTX version (-mptx) needs to be at least 7.0 to support \ selected -misa (sm_80)
... output that -mptx needs to be at least 4.1. I think that's okay but -mptx only supports the values 3.1, 6.3, and 7.0. As the default is ptx = 6.3, it only occurs when both are specified in the way shown above. Thus, we can live with that. (Misleading message for odd corner case, only. In particular, I am not sure we really want to add another PTX version...) (Which points to the question of supporting multilib configurations – as discussed before: https://gcc.gnu.org/pipermail/gcc/2022-February/238224.html ) Tobias ----------------- Siemens Electronic Design Automation GmbH; Anschrift: Arnulfstraße 201, 80634 München; Gesellschaft mit beschränkter Haftung; Geschäftsführer: Thomas Heurung, Frank Thürauf; Sitz der Gesellschaft: München; Registergericht München, HRB 106955
