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| -rw-r--r-- | docs/ReleaseNotes.html | 3 |
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diff --git a/docs/ReleaseNotes.html b/docs/ReleaseNotes.html index 68bd0f4aa1..8b533e62a4 100644 --- a/docs/ReleaseNotes.html +++ b/docs/ReleaseNotes.html @@ -752,6 +752,9 @@ be used to verify some algorithms. Better code generation for Cortex-A9 Many APIs take ArrayRef's now. Pass manager extension API. + + +Information about branch probability and basic block frequency is now available within LLVM based on a combination of static branch prediction heuristics and __builtin_expect calls. That information is currently used for register spill placement and if-conversion, with additional optimizations planned for future releases. The same frameworks are intended for eventual use with profile-guided optimization, but that is not yet implemented. --> |