Displaying 2 results from an estimated 2 matches for "createaddrecfromphi".
2017 Apr 12
6
LLVM is getting faster, April edition
...compile-time:
- KnownBits Cache. InstCombine and other passes use known bits, which often happens to be pretty expensive. Hal posted a patch [2] that implements a cache for known bits, but there are still some issues to fix there.
- SCEV. Some parts of SCEV still need to be improved. For instance, createAddRecFromPHI function seems to be very inefficient: it can perform many expensive traversals over entire function/loop nest, and most of them are probably redundant.
- Forming LCSSA. PR31851 reports that the current implementation of LCSSA forming can be expensive. A WIP patch [3] should address the problem, bu...
2017 Apr 18
3
LLVM is getting faster, April edition
...gt;
> - KnownBits Cache. InstCombine and other passes use known bits, which often happens to be pretty expensive. Hal posted a patch [2] that implements a cache for known bits, but there are still some issues to fix there.
> - SCEV. Some parts of SCEV still need to be improved. For instance, createAddRecFromPHI function seems to be very inefficient: it can perform many expensive traversals over entire function/loop nest, and most of them are probably redundant.
> - Forming LCSSA. PR31851 reports that the current implementation of LCSSA forming can be expensive. A WIP patch [3] should address the proble...