llama.cpp

1e748974 - CANN: refactor mask handling and improve performance in FA (#15561)

CANN: refactor mask handling and improve performance in FA (#15561) * CANN(flash-attn): refactor mask handling and improve performance 1. Refactored the mask computation in Flash Attention, unified the logic without separating prefill and decode. 2. Optimized performance in non-alibi scenarios by reducing one repeat operation. 3. Updated operator management to explicitly mark unsupported cases on 310P devices and when dim is not divisible by 16. Signed-off-by: noemotiovon <757486878@qq.com> * [CANN]: fix review Signed-off-by: noemotiovon <757486878@qq.com> * [CANN]: Optimization FA BNSD to BSND Signed-off-by: noemotiovon <757486878@qq.com> --------- Signed-off-by: noemotiovon <757486878@qq.com>