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Outdated suggestions cannot be applied.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.
Improve code generation for
Icsel
when the condition is float equality. This condition is not directly expressible as a CMOV mnemonic. To work around it, the compiler emits a jump instruction (to correctly handle the special case of Nan argument), defeating the purpose ofCMOV
. This PR adds an ad-hoc pattern duringSelection
to detect this case, negate the condition and swap the arguments ofCMOV
.Added a test to exercise this special case. I'm not adding any assembly grepping, because it's too fragile.