Mapping variables to CPU registers
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Explore Pro CoursesRegister allocation maps the large number of temporary variables in IR to the limited number of CPU registers. Variables that don't fit go to memory (spilling).
R):
Spill some variables to memory
Example:
t1 interferes with t2 → different registers
t1 interferes with t3 → different registers
t2 and t3 don't interfere → can share register
What is register allocation?
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