PR types

Bug fixes

PR changes

OPs

Describe

Fix bug in elementwise_mul/di _grad when inplace strategy：
1）For samedims cases，just do it directly
2）Because of Ternary compute，the inplace strategy doesn't effect the result

Example：
In some models，there is x=x*mask，where the shape of x and mask is the same and mask.stop_gradients is True.
In this case, the x_grad woule be wrong