U
    T?h2                     @   s\   d dl mZ d dlmZmZ d dlmZ d dlmZ d dl	m
Z
 eeZG dd deZdS )	    )	getLogger)DictOptional)Fusion)helper)	OnnxModelc                       sp   e Zd Zed fddZeedddZee ddd	Z	eeee d
ddZ
eeee d
ddZ  ZS )FusionFastGelu)modelc                    s   t  |dd d S )NFastGeluZTanh)super__init__)selfr	   	__class__ Z/var/www/html/venv/lib/python3.8/site-packages/onnxruntime/transformers/fusion_fastgelu.pyr      s    zFusionFastGelu.__init__)input_name_to_nodesoutput_name_to_nodec                 C   s:   |  |||rd S | |||r$d S | |||r6d S d S )N)fuse_1fuse_2fuse_3)r   	tanh_noder   r   r   r   r   fuse   s    zFusionFastGelu.fuse)returnc                 C   s  |j d |krdS ||j d  }t|dks:|d jdkr>dS |d }| j|dsXdS |j d |krjdS ||j d  }t|dks|d jdkrdS |d }| j|dd|}|dkrdS | j|d}|dk rdS |j|dkrdnd }	| j||dkrdnd|}
| j|dd|}|dkr*dS | jj|dd	d
}|dk rJdS | j|d|dkrbdnd|}|dkrxdS | jj|dd||
r|
gng d}|dkrdS | jj|dd	d
}|dk rdS | j|d|dkrdnd|}|dkrdS | j|ds
dS |jd |	krdS ||||||||g}| j	||j d g||sRdS | j
| tjd|	g|j | jdd}d|_| j| | j| j|j< dS )aj  
        Fuse Gelu with tanh into one node:
              +---------------------------+
              |                           |
              |                           v
            [root] --> Pow --> Mul -----> Add  --> Mul --> Tanh --> Add --> Mul
              |       (Y=3)   (B=0.0447...)       (B=0.7978...)    (B=1)     ^
              |                                                              |
              +------> Mul(B=0.5)--------------------------------------------+
        Note that constant input for Add and Mul could be first or second input: like either A=0.5 or B=0.5 is fine.
        r   N   Add      ?Mul      ?+ݓ?-C6?deltaexclude,C?Pow      @r
   inputsoutputsnamecom.microsoftT)outputlenop_typer	   has_constant_inputmatch_parentfind_constant_inputinput
get_parentis_safe_to_fuse_nodesnodes_to_removeextendr   	make_nodecreate_node_namedomainnodes_to_addappendthis_graph_namenode_name_to_graph_namer+   )r   r   r   r   childrenadd_after_tanhZmul_after_tanhmul_halfi
root_input	root_nodemul_before_tanhadd_before_tanhmul_after_powpowsubgraph_nodes
fused_noder   r   r   r      s    

 


 



zFusionFastGelu.fuse_1)r   r   r   c                 C   s  |j d |krdS ||j d  }t|dks:|d jdkr>dS |d }| j|dsXdS |j d |krjdS ||j d  }t|dks|d jdkrdS |d }| j|d}|dk rdS |j d |krdS ||j d  }t|dks|d jdkrdS |d }| j||jd |j d kr dnd|}	|	dkr6dS | j|dd|}
|
dkrVdS | jj|
dd	d
}|dk rvdS | j|
d|dkrdnd|}|dkrdS | jj|dd||	gd}|dkrdS | jj|dd	d
}|dk rdS | j|d|dkrdnd|}|dkrdS | j|ds,dS |jd |	j d krFdS |||||
|||g}| j	||j d g||szdS | j
| tjd|	j d g|j | jdd}d|_| j| | j| j|j< dS )a  
        This pattern is from Tensorflow model.
        Fuse Gelu with tanh into one node:
              +---------------------------+
              |                           |
              |                           v
            [root] --> Pow --> Mul -----> Add  --> Mul --> Tanh --> Add --> Mul(B=0.5)-->Mul-->
              |       (Y=3)   (B=0.0447...)       (B=0.7978...)    (B=1)                  ^
              |                                                                           |
              +---------------------------------------------------------------------------+
        Note that constant input for Add and Mul could be first or second input: like either A=0.5 or B=0.5 is fine.
        r   Nr   r   r   r   r   r   r    r!   r#   r%   r&   r'   r
   r(   r,   T)r-   r.   r/   r	   r0   r2   r4   r3   r1   r5   r6   r7   r   r8   r9   r:   r;   r<   r=   r>   r+   )r   r   r   r   r?   r@   rA   rB   Zmul_after_mul_halfrD   rE   rF   rG   rH   rI   rJ   r   r   r   r      s    


 


 




zFusionFastGelu.fuse_2c              	   C   s  |j d |krdS ||j d  }t|dks:|d jdkr>dS |d }| j|dsXdS |j d |krjdS ||j d  }t|dks|d jdkrdS |d }| j|dd|}|dkrdS | j|d}|dk rdS |j|dkrdnd }	| j|dd|}
|
dkrdS | j|
dd|}|dkr,dS | j|d}|dk rHdS | j|
dd|}|dkrhdS | jj|dd	d
}|dk rdS |j|dkrdnd |	krdS | j|d|dkrdnd|}|dkrdS |jd |	krd}n|jd |	krd}ndS | j|d||}|dkr(dS | jj|dd	d
}|dk rHdS |j|dkrZdnd |	krjdS ||||
|||||g	}| j||j d g||sdS | j	
| tjd|	g|j | jdd}d|_| j| | j| j|j< dS )a  
        OpenAI's gelu implementation, also used in Megatron:
           Gelu(x) = x * 0.5 * (1.0 + torch.tanh(0.79788456 * x * (1.0 + 0.044715 * x * x)))

        Fuse subgraph into a FastGelu node:
            +------------ Mul (B=0.79788456) -------------------+
            |                                                   |
            +-------------------------------+                   |
            |                               |                   |
            |                               v                   v
          [root] --> Mul (B=0.044715) --> Mul --> Add(B=1) --> Mul --> Tanh --> Add(B=1) --> Mul-->
            |                                                                                 ^
            |                                                                                 |
            +-----------> Mul (B=0.5) --------------------------------------------------------+
        r   Nr   r   r   r   r   r   r    r!   r%   r
   r(   r,   T)r-   r.   r/   r	   r0   r1   r2   r3   r5   r6   r7   r   r8   r9   r:   r;   r<   r=   r>   r+   )r   r   r   r   r?   r@   Zmul_lastrA   rB   rC   rE   Zadd_1jZmul_7978kZmul_before_add_1ZanotherZmul_0447mrI   rJ   r   r   r   r      s    




 




zFusionFastGelu.fuse_3)__name__
__module____qualname__r   r   r   r   r   boolr   r   r   __classcell__r   r   r   r   r      s
   
lmr   N)loggingr   typingr   r   Zfusion_baser   Zonnxr   Z
onnx_modelr   rN   loggerr   r   r   r   r   <module>   s   