Assembly language programmers must be aware of hidden side effects — instructions that modify parts of the processor state which are not mentioned in the instruction's mnemonic. A classic example of a hidden side effect is an arithmetic instruction that implicitly modifies condition codes (a hidden side effect) while it explicitly modifies a register (the overt effect). One potential drawback of an instruction set with hidden side effects is that, if many instructions have side effects on a single piece of state, like condition codes, then the logic required to update that state sequentially may become a performance bottleneck. The problem is particularly acute on some processors designed with pipelining (since 1990) or with out-of-order execution . Such a processor may require additional control circuitry to detect hidden side effects and stall the pipeline if the next instruction depends on the results of those effects.
At 18, fresh from high school, Marina, Ignacio, Adam and Mimi, school mates bonded by fate, shared a dream about adult life, a dream of fame, success, perfect skin and that one endless, true love that, surely, was waiting just around the corner for each one of them. But 30's arrived, and none of the sweet promises of youth was fulfilled. Alone, failed and frustrated, all four are forced to stop and look around to try to understand where it all went wrong, and find an emergency fix for their lives, before it's too late, and happiness escapes through their fingers forever. Secondary Effects is the bitter coming of age comedy that follows their steps in the search for lost dreams, lost hair and good sex, at least, if true love turns out to be a mirage. Written by Anonymous
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