[RISCV][RFC] Add additional opcodes to RISCVDAGToDAGISel::hasAllNBitUsers #147728
+29
−2
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Outdated suggestions cannot be applied.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.
This adds opcodes that are handled in the RISCVOptWInstrs version but not the SDag version.
I added these when exploring the SDag approach to #144703. Overall this has some small impact on an llvm-test-suite build (diffing .s gives 8610 insertions, 8890 deletions). This patch also updates
SLLI
to do a recursive call similar to the RISCVOptWInstrs.Marking this as RFC/WIP because no tests are added, and I'd like to check if there's any particular criteria for deciding what opcodes to cover (i.e. were any of the opcodes I'm adding missed on purpose).