What is the purpose of using SSA in the process of code development and optimization?

SSA (Static Single Assignment) is an intermediate code representation where each variable is assigned exactly once. During development and optimization, SSA simplifies analysis and transformation of the program.

Goals of using SSA:

• Simplify data analysis: thanks to unique assignments, it's easier to track variable values and dependencies.
• Optimize code: SSA facilitates applying optimizations like dead code elimination, constant propagation, inlining, and others.
• Improve code generation: the compiler can more efficiently allocate registers and optimize instructions.

In Go, the compiler uses SSA to improve the performance of generated code and enhance optimization quality.