This information is also useful for bounds-checking elimination and dependence analysis, among other things.

However, it may still be possible for the compiler or runtime to perform proper bounds-checking elimination in this case.

Bounds-checking elimination are compiler technologies that eliminate unneeded bounds checking in many common cases.

Good compilers may also analyze the program to determine the range of possible values that the index may have, and this analysis may lead to bounds-checking elimination.

Bounds-checking elimination could eliminate the second check if the compiler or runtime can determine that the array size cannot change and the index cannot change between the two array operations.

One technique for bounds-checking elimination is to use a typed static single assignment form representation and for each array create a new type representing a safe index for that particular array.

Bounds-checking elimination allows the compiler to safely remove bounds-checking in many situations where it can determine that the index must fall within valid bounds, for example if it is a simple loop variable.

In computer science, bounds-checking elimination is a compiler optimization useful in programming languages or runtimes that enforce bounds checking, the practice of consistently checking every index into an array to verify that the index is within the defined valid range of indexes.