Add SIMD shuffling operations #14
Open
Conversation
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
3 tasks
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
This PR adds another opgroup
SHFLfor SIMD shuffling instructionsOperations
Currently only two operations are supported:
SHUFFLE: Shuffle the input vector inoperand_i[0]with the mask inoperand_i[1]SHUFFLE2: Shuffle the input vectors inoperand_i[0]andoperand_i[2]with the mask inoperand_i[1]The
SHUFFLE2operation is selected by setting theop_mod_iflag.Verification
The unit was integrated and tested in the snitch cluster for all SIMD formats (FP8, FP16, FP32).
Evaluation
Synthesis results of the snitch cluster showed an overhead of ~3kGE/FPU with all formats enabled. The critical path is not affected, even if no pipeline registers are configured.