[inductor] Limit cpu copies in autotuning to CUDA devices #137509
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Stack from ghstack (oldest at bottom):
Summary: Missed in #136701 (comment): we should perform this optimization only for mutated args on cuda devices
Test Plan:
python benchmarks/dynamo/timm_models.py --performance --inductor --device cuda --inference --bfloat16 --print-compilation-time --print-memory --cold-start-latency --only fbnetc_100cc @voznesenskym @penguinwu @EikanWang @jgong5 @Guobing-Chen @XiaobingSuper @zhuhaozhe @blzheng @wenzhe-nrv @jiayisunx @ipiszy @yf225 @chenyang78 @kadeng @muchulee8 @ColinPeppler @amjames @desertfire @chauhang