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MR 描述
本次 MR 主要针对
TTXCausalConv1dUpdateState在小 shape（1, 1, 32, 4, None）下的device latency做优化，目标是在尽量小改动的前提下改善该热点 case 的执行效率。优化结果
TTX侧device time从12.3520 us降低到4.6200 us2.67x加速，或62.6%的device time降低Torch reference的48.4896 us，TTX当前约快10.5x