TYPE_SEP for ARRAYs

[shaurya arora <arora at gdit dot iiit dot net>]

Hi,

I am new to gcc development and I was going through tree.def. It says that 
TYPE_SEP and TYPE_SEP_UNIT are special fields for arrays.

/* Types of arrays.  Special fields:
   TREE_TYPE		  Type of an array element.
   TYPE_DOMAIN		  Type to index by.
			    Its range of values specifies the array 
length.
   TYPE_SEP		  Expression for units from one elt to the next.
   TYPE_SEP_UNIT	  Number of bits in a unit for previous.
 The field TYPE_POINTER_TO (TREE_TYPE (array_type)) is always nonzero
 and holds the type to coerce a value of that array type to in C.
 TYPE_STRING_FLAG indicates a string (in contrast to an array of chars)
 in languages (such as Chill) that make a distinction. */

I wanted to figure out whether TYPE_SEP and TYPE_SEP_UNIT were int_cst 
trees or plain old integers, but it looks like no function uses these 
fields. Niether are there any accessor macros defined for these fields. 
Are these fields not available any longer ?

Thanks,
Shaurya.   

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