Feat/cast multi backend#56

gongchensu wants to merge 2 commits intoInfiniTensor:feat/ascend-operatorsInfiniTensor/InfiniOps:feat/ascend-operatorsfrom

gongchensu:feat/cast-multi-backendgongchensu/InfiniOps:feat/cast-multi-backendCopy head branch name to clipboard