py/asmrv32: Make lt/le comparisons emitter shorter. #17652
+3
−11
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Outdated suggestions cannot be applied.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.
Summary
This PR simplifies the emitter code (not the emitted code) in charge of generating opcodes performing less-than and less-than-or-equal comparisons.
By rewriting the
SLT
/SLTU
opcode generator (handling less-than comparisons) and de-inlining the less-than comparison generator call in the less-than-or-equal generator, the QEMU's output binary is 78 bytes smaller (measurement taken when building on a CI-like environment).Testing
Besides the usual manual tests run on QEMU's VIRT_RV32 board, CI's QEMU tests for RV32 were executed successfully by GitHub's test runner from its original code branch.