Feat tensor to bool

[wyg1997]

[github-actions]

CI failed, removing label automerge

[github-actions]

CI failed, removing label automerge

[chengtbf]

mark。暂时移除 automerge，两个小时以后加回来。

[github-actions]

CI failed, removing label automerge

[github-actions]

CI failed, removing label automerge

[github-actions]

Speed stats:

GPU Name: GeForce GTX 1080 

PyTorch resnet50 time: 140.2ms (= 7011.8ms / 50, input_shape=[16, 3, 224, 224], backward is enabled)
OneFlow resnet50 time: 128.4ms (= 6417.6ms / 50, input_shape=[16, 3, 224, 224], backward is enabled)
Relative speed: 1.09 (= 140.2ms / 128.4ms)

PyTorch resnet50 time: 84.8ms (= 4242.0ms / 50, input_shape=[8, 3, 224, 224], backward is enabled)
OneFlow resnet50 time: 74.6ms (= 3728.2ms / 50, input_shape=[8, 3, 224, 224], backward is enabled)
Relative speed: 1.14 (= 84.8ms / 74.6ms)

PyTorch resnet50 time: 56.8ms (= 2841.9ms / 50, input_shape=[4, 3, 224, 224], backward is enabled)
OneFlow resnet50 time: 48.4ms (= 2417.6ms / 50, input_shape=[4, 3, 224, 224], backward is enabled)
Relative speed: 1.18 (= 56.8ms / 48.4ms)

PyTorch resnet50 time: 49.2ms (= 2461.4ms / 50, input_shape=[2, 3, 224, 224], backward is enabled)
OneFlow resnet50 time: 39.3ms (= 1965.8ms / 50, input_shape=[2, 3, 224, 224], backward is enabled)
Relative speed: 1.25 (= 49.2ms / 39.3ms)

PyTorch resnet50 time: 41.8ms (= 2089.7ms / 50, input_shape=[1, 3, 224, 224], backward is enabled)
OneFlow resnet50 time: 36.6ms (= 1829.9ms / 50, input_shape=[1, 3, 224, 224], backward is enabled)
Relative speed: 1.14 (= 41.8ms / 36.6ms)