Language Processors
In analyzing the compilation of PL/I program, the description "resolving symbolic address (labels) and generating machine language" is associated with

Storage assignment
Assembly and output
Syntax analysis
Code generation

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

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

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