Movatterモバイル変換

10.2.1 Trees ¶

All GENERIC trees have two fields in common. First,TREE_CHAINis a pointer that can be used as a singly-linked list to other trees.The other isTREE_TYPE. Many trees store the type of anexpression or declaration in this field.

These are some other functions for handling trees:

tree_size ¶

Return the number of bytes a tree takes.

build0 ¶

build1 ¶

build2 ¶

build3 ¶

build4 ¶

build5 ¶

build6 ¶

These functions build a tree and supply values to put in eachparameter. The basic signature is ‘code, type, [operands]’.code is theTREE_CODE, andtype is a treerepresenting theTREE_TYPE. These are followed by theoperands, each of which is also a tree.