Language Processors
In analyzing the compilation of PL/I program, the term "Machine independent optimization" is associated with

recognition of basic elements and creation of uniform symbols
creation of more optional matrix
recognition of basic syntactic constructs through reductions
use of macro processor to produce more optimal assembly code

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Language Processors
The function(s) of the Syntax phase is/ are:

to recognize the major constructs of the language and to call the appropriate action routines that will generate the intermediate form or matrix for these constructs
to build a uniform symbol table
to build a literal table and an identifier table
to parse the source program into the basic elements or tokens of the language

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