In 2018 we're spending effort to defeat out-of-control optimizers. I've been doing this to C compilers for years.https://stackoverflow.com/questions/48089426/what-is-a-retpoline-and-how-does-it-work …
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I consider the branch predictor a form of optimizer, yes. Less out of control, but getting there.
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Too bad gcc doesn't read inline asm into RTL. It would have been double fun if it did that and was capable of peeling through all those layers in the retpoline ;)
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