s390x: Codegen fixes and preparation for ISLE migration #3702
Conversation
This file contains 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
In preparing the back-end to move to ISLE, I detected a number of codegen bugs in the existing code, which are fixed here: - Fix internal compiler error with uload16/icmp corner case. - Fix broken Cls lowering. - Correctly mask shift count for i8/i16 shifts. In addition, I made several changes to operand encodings in various MInst patterns. These should not have any functional effect, but will make the ISLE migration easier: - Encode floating-point constants as u32/u64 in MInst patterns. - Encode shift amounts as u8 and Reg in ShiftOp pattern. - Use MemArg in LoadMultiple64 and StoreMultiple64 patterns.
github-actions
bot
added
the
cranelift
cfallin
approved these changes
Jan 20, 2022
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Outdated suggestions cannot be applied.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.
In preparing the back-end to move to ISLE, I detected a
number of codegen bugs in the existing code, which are
fixed here:
In addition, I made several changes to operand encodings
in various MInst patterns. These should not have any
functional effect, but will make the ISLE migration easier:
CC @cfallin