forked from llvm/llvm-project
-
Notifications
You must be signed in to change notification settings - Fork 0
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
[X86] Improve KnownBits for X86ISD::PSADBW nodes (llvm#83830)
Don't just return the known zero upperbits, compute the absdiff Knownbits and perform the horizontal sum. Add implementations that handle both the X86ISD::PSADBW nodes and the INTRINSIC_WO_CHAIN intrinsics (pre-legalization).
- Loading branch information
Showing
3 changed files
with
63 additions
and
71 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters