vector: constrain index load/store for eew64 and xlen32 #2125
+1
−0
Conversation
This file contains hidden or 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
Section 18.3 says "The V extension supports all vector load and store instructions (Section Vector Loads and Stores), except the V extension does not support EEW=64 for index values when XLEN=32" Signed-off-by: Chih-Min Chao <[email protected]>
aswaterman
reviewed
Nov 6, 2025
| #define VI_CHECK_ST_INDEX(elt_width) \ | ||
| require_vector(false); \ | ||
| require(elt_width <= P.VU.ELEN); \ | ||
| require(elt_width <= P.get_xlen()); \ |
There was a problem hiding this comment.
Maybe require(elt_width <= std::min(P.VU.ELEN, P.get_xlen()));? But it is a matter of opinion.
aswaterman
approved these changes
Nov 6, 2025
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
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Outdated suggestions cannot be applied.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.
Section 18.3 says
"The V extension supports all vector load and store instructions (Section Vector Loads and Stores), except the V extension does not support EEW=64 for index values when XLEN=32"