[anon4]

Historically, it's been a significant win for some of the SPECcpu benchmarks.

But doesn't it mean that you're not really executing the full benchmark then?

[greglindahl]

No, because no one ever reads the dead data. These are not microbenchmarks that get broken by optimizations like this; SPECcpu programs have answers, and the goal is to output the answer. The answer is tested. Anything you can delete from the program is fair game.