compiletest: Simplify //@ needs-asm-mnemonic: ret to just //@ needs-asm-ret#156901
Merged
Conversation
The `needs-asm-mnemonic` directive was very general, but in practice was only being used for `ret`. There are very few other mnemonics that it could plausibly be useful for (e.g. `nop`), because any instruction that requires arguments is probably going to be non-portable. This PR replaces `needs-asm-mnemonic` with a simpler `needs-asm-ret` directive that uses the same machinery as other simple needs directives. If we happend to need more mnemonics in the future, we can just add more simple directives as appropriate (e.g. `needs-asm-nop`).
Collaborator
|
The rustc-dev-guide subtree was changed. If this PR only touches the dev guide consider submitting a PR directly to rust-lang/rustc-dev-guide otherwise thank you for updating the dev guide with your changes.
Some changes occurred in src/tools/compiletest cc @jieyouxu |
Collaborator
|
r? @oli-obk rustbot has assigned @oli-obk. Use Why was this reviewer chosen?The reviewer was selected based on:
|
Contributor
|
r? folkertdev
|
Contributor
|
@bors r+ rollup |
Contributor
JonathanBrouwer
added a commit
to JonathanBrouwer/rust
that referenced
this pull request
May 25, 2026
compiletest: Simplify `//@ needs-asm-mnemonic: ret` to just `//@ needs-asm-ret` - Simplification of rust-lang#155692. --- The `needs-asm-mnemonic` directive was very general, but in practice was only being used for `ret`. There are very few other mnemonics that it could plausibly be useful for (e.g. `nop`), because any instruction that requires arguments is probably going to be non-portable. This PR replaces `needs-asm-mnemonic` with a simpler `needs-asm-ret` directive that uses the same machinery as other simple needs directives. If we happend to need more mnemonics in the future, we can just add more simple directives as appropriate (e.g. `needs-asm-nop`).
JonathanBrouwer
added a commit
to JonathanBrouwer/rust
that referenced
this pull request
May 25, 2026
compiletest: Simplify `//@ needs-asm-mnemonic: ret` to just `//@ needs-asm-ret` - Simplification of rust-lang#155692. --- The `needs-asm-mnemonic` directive was very general, but in practice was only being used for `ret`. There are very few other mnemonics that it could plausibly be useful for (e.g. `nop`), because any instruction that requires arguments is probably going to be non-portable. This PR replaces `needs-asm-mnemonic` with a simpler `needs-asm-ret` directive that uses the same machinery as other simple needs directives. If we happend to need more mnemonics in the future, we can just add more simple directives as appropriate (e.g. `needs-asm-nop`).
This was referenced May 25, 2026
rust-timer
added a commit
that referenced
this pull request
May 25, 2026
Rollup merge of #156901 - Zalathar:needs-asm-ret, r=folkertdev compiletest: Simplify `//@ needs-asm-mnemonic: ret` to just `//@ needs-asm-ret` - Simplification of #155692. --- The `needs-asm-mnemonic` directive was very general, but in practice was only being used for `ret`. There are very few other mnemonics that it could plausibly be useful for (e.g. `nop`), because any instruction that requires arguments is probably going to be non-portable. This PR replaces `needs-asm-mnemonic` with a simpler `needs-asm-ret` directive that uses the same machinery as other simple needs directives. If we happend to need more mnemonics in the future, we can just add more simple directives as appropriate (e.g. `needs-asm-nop`).
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
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.
The
needs-asm-mnemonicdirective was very general, but in practice was only being used forret. There are very few other mnemonics that it could plausibly be useful for (e.g.nop), because any instruction that requires arguments is probably going to be non-portable.This PR replaces
needs-asm-mnemonicwith a simplerneeds-asm-retdirective that uses the same machinery as other simple needs directives.If we happend to need more mnemonics in the future, we can just add more simple directives as appropriate (e.g.
needs-asm-nop).