Implement branch prediction intrinsics #20579

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1. nagisa commented on Jan 5, 2015

   

   nagisa

   on Jan 5, 2015

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   Appears to correspond to llvm.expect intrinsic.

   👎React with 👎1Reacted by thbwd
2. jdm commented on Jan 5, 2015

   

   jdm

   on Jan 5, 2015

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   See #17317.
3. nagisa commented on Jan 5, 2015

   

   nagisa

   on Jan 5, 2015

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   I’m be fine with only expect_u* exposed from core::intrinsics. That wouldn’t need any RFC I think. While likely! and unlikely! are nice-to-have, they are simple enough to define in terms of the intrinsics.
4. alexcrichton commented on Feb 28, 2015

   

   alexcrichton

   on Feb 28, 2015

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   cc @steveklabnik, could this move to the rust-lang/rfcs repo? (feature request)
5. nagisa

   closed this as completedon Feb 28, 2015
6. lnicola

   added a commit that references this issue on Sep 1, 2025

   Merge pull request rust-lang#20579 from Elliot-Roberts/fix-double-tar…

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