optional · CSS study notes

Code Optimization

Elimination of redundant code: removing computations whose results are never used or already computed
Constant folding: evaluating constant expressions at compile time rather than runtime (e.g., replacing 2 + 3 with 5)
Loop optimization: e.g., moving loop-invariant computations outside the loop
Peephole optimization: examining a small, sliding "window" of generated instructions and replacing inefficient patterns with more efficient equivalents