Don't require AVX512 for 256-bit VAES intrinsics #1348
Merged
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
These are available on AMD CPUs without AVX512, Fixes rust-lang#1343
|
@Amanieu: no appropriate reviewer found, use r? to override |
thomcc
approved these changes
Oct 27, 2022
| @@ -471,6 +471,12 @@ fn matches(rust: &Function, intel: &Intrinsic) -> Result<(), String> { | |||
| continue; | |||
| } | |||
|
|
|||
| // Some AMD CPUs support VAES without AVX512, even though the Intel | |||
| // documentation states that those instructions require AVX512VL. | |||
| if *cpuid == "AVX512VL" && intel.cpuid.contains(&"VAES".to_string()) { | |||
There was a problem hiding this comment.
.contains(&"VAES".to_string()) is a bit goofy looking but it's test only and probably clearer than the alternative so it's fine.
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Outdated suggestions cannot be applied.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.
These are available on AMD CPUs without AVX512,
Fixes #1343