An interference graph is a representation used in compiler optimization to model the conflicts between variables, where nodes represent variables and edges indicate that two variables cannot be assigned to the same register. This graph is crucial in register allocation to minimize the number of registers needed without causing conflicts during program execution.

Interference Graph

interference graph

Compiler optimization refers to the process of improving the performance and efficiency of compiled code by transforming it without altering its output. It involves various techniques that reduce execution time, minimize resource usage, and enhance overall program performance while maintaining correctness.

compiler optimization

conflicts between variables

nodes represent variables

Edges indicate conflicts

Register allocation is a crucial optimization process in compiler design that assigns a limited number of CPU registers to a program's variables to minimize memory access and enhance execution speed. It involves deciding which variables should reside in registers at any point in the program and managing the spilling of variables to memory when registers are insufficient.

register allocation

minimize the number of registers

Program execution is the process by which a computer carries out the instructions of a program, transitioning from a static code to dynamic actions. It involves the interaction between the CPU, memory, and input/output systems to perform tasks as specified by the program's code.

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