Remove useless caller-saved float registers check#126
Draft
xtexx wants to merge 1 commit into
Draft
Conversation
It never successes, because pd_last_callee_saved_fpu_reg is the same as pd_last_fpu_reg. LoongArch ABI specified $f24-$f31 as callee-saved registers, while $f31 is also the last register. There is no hole between the last callee-saved float register and the last float register, so the check always evaluates to false. Thanks to clang for finding this. Fixes: 526ad75 ("Initial Linux/LoongArch64 Port") Signed-off-by: Bingwu Zhang <xtex@aosc.io>
Author
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
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
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Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be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.
It never successes, because pd_last_callee_saved_fpu_reg is the same as pd_last_fpu_reg.
LoongArch ABI specified $f24-$f31 as callee-saved registers, while $f31 is also the last register. There is no hole between the last callee-saved float register and the last float register, so the check always evaluates to false.
Thanks to clang for finding this.
Fixes: 526ad75 ("Initial Linux/LoongArch64 Port")
Signed-off-by: Bingwu Zhang xtex@aosc.io