13 lines
No EOL
865 B
Markdown
13 lines
No EOL
865 B
Markdown
1. **OK**: uniquify deals with the shadowing of variables by renaming every variable to a
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unique name.
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2. **OK** remove_complex_operands ensures that each subexpression of a primitive operation or
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function call is a variable or integer, that is, an atomic expression. We refer
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to nonatomic expressions as complex. This pass introduces temporary variables
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to hold the results of complex subexpressions.
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3. **OK** explicate_control makes the execution order of the program explicit. It converts
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the abstract syntax tree representation into a graph in which each node is a
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labeled sequence of statements and the edges are goto statements.
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4. select_instructions handles the difference between LVar operations and x86
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instructions. This pass converts each LVar operation to a short sequence of
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instructions that accomplishes the same task.
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assign_homes |