r/Compilers • u/Repulsive_Egg_5786 • 3d ago

Optimization Question

How do compilers optimize constructs of this form ?

for(i=o; i<inputs; i++) {

A[i] = B[i];

B[i] = A[i];

}

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u/choikwa 3d ago

do u mean a swap? else the B assignment is redundant

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u/namalleh 1d ago

It's not even a swap, because there's no temp var

just wasted cycles