Language Processors
A compiler is

program that accepts a program written in a high level language and produces an object program
a program that places programs into memory and prepares them for execution
is a program that appears to execute a source program as if it were machine language
a program that automate the translation of assembly language into machine language

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

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

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Language Processors
The system/370 assembler language

is a term that refers to the control programs of an operating system
is used to remember which of the general-purpose registers are currently available as base registers, and what base addresses they contain
allows multiple programs to reside in separate areas of core at the same time
allows the programmer to write base registers and displacements explicitly in the source program

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Language Processors
Bug means

All of these
Documenting programs using an efficient documentation tool
A logical error in a program
A difficult syntax error in a program

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