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CS606 - Compiler Construction - Lecture Handout 35

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IR Taxonomy

IRs fall into three organizational categories:

  1. Graphical IRs encode the compiler’s knowledge in a graph.
  2. Linear IRs resemble pseudo-code for some abstract machine
  3. Hybrid IRs combine elements of both graphical (structural) and linear IRs

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CS606 - Compiler Construction - Lecture Handout 17

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Note that productions output are tracing out a lefmost derivation. The grammar symbols on the stack make up left-sentential forms.

LL(1) Table Construction

Top-down parsing expands a parse tree from the start symbol to the leaves. It always expand the leftmost non-terminal. Consider the state

Read more: CS606 - Compiler Construction - Lecture Handout 17