s390x: Fix a regression related to backchain feature #129940
Merged
Conversation
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
... can not be correctly gated using #[cfg] macro
rustbot added S-waiting-on-review | @rustbot label O-SystemZ A-LLVM A-target-feature C-bug |
rustbot added A-LLVM 
RalfJung reviewed Sep 3, 2024
RalfJung reviewed Sep 3, 2024
RalfJung reviewed Sep 3, 2024
liushuyu force-pushed the s390x-target-features branch from b6ad204 to e318af1 Compare RalfJung reviewed Sep 4, 2024
liushuyu force-pushed the s390x-target-features branch from e318af1 to 6e4c5c1 Compare 
| Thanks :) @bors r+ rollup |
bors added S-waiting-on-bors matthiaskrgr added a commit to matthiaskrgr/rust that referenced this pull request Sep 5, 2024
…RalfJung s390x: Fix a regression related to backchain feature In rust-lang#127506, we introduced a new IBM Z-specific target feature, `backchain`. This particular `target-feature` was available as a function-level attribute in LLVM 17 and below, so some hacks were used to avoid blowing up LLVM when querying the supported LLVM features. This led to an unfortunate regression where `cfg!(target-feature = "backchain")` will always return true. This pull request aims to fix this issue, and a test has been introduced to ensure it will never happen again. Fixes rust-lang#129927. r? `@RalfJung`
matthiaskrgr added a commit to matthiaskrgr/rust that referenced this pull request Sep 5, 2024
…RalfJung s390x: Fix a regression related to backchain feature In rust-lang#127506, we introduced a new IBM Z-specific target feature, `backchain`. This particular `target-feature` was available as a function-level attribute in LLVM 17 and below, so some hacks were used to avoid blowing up LLVM when querying the supported LLVM features. This led to an unfortunate regression where `cfg!(target-feature = "backchain")` will always return true. This pull request aims to fix this issue, and a test has been introduced to ensure it will never happen again. Fixes rust-lang#129927. r? ``@RalfJung``
bors added a commit to rust-lang-ci/rust that referenced this pull request Sep 5, 2024
…iaskrgr Rollup of 12 pull requests Successful merges: - rust-lang#128919 (Add an internal lint that warns when accessing untracked data) - rust-lang#129471 ([rustdoc] Sort impl associated items by kinds and then by appearance) - rust-lang#129653 (clarify that addr_of creates read-only pointers) - rust-lang#129775 (bootstrap: Try to track down why `initial_libdir` sometimes fails) - rust-lang#129939 (explain why Rvalue::Len still exists) - rust-lang#129940 (s390x: Fix a regression related to backchain feature) - rust-lang#129942 (copy rustc rustlib artifacts from ci-rustc) - rust-lang#129943 (use the bootstrapped compiler for `test-float-parse` test) - rust-lang#129944 (Add compat note for trait solver change) - rust-lang#129947 (Add digit separators in `Duration` examples) - rust-lang#129955 (Temporarily remove fmease from the review rotation) - rust-lang#129957 (forward linker option to lint-docs) r? `@ghost` `@rustbot` modify labels: rollup
bors added a commit to rust-lang-ci/rust that referenced this pull request Sep 5, 2024
…iaskrgr Rollup of 12 pull requests Successful merges: - rust-lang#128919 (Add an internal lint that warns when accessing untracked data) - rust-lang#129471 ([rustdoc] Sort impl associated items by kinds and then by appearance) - rust-lang#129653 (clarify that addr_of creates read-only pointers) - rust-lang#129775 (bootstrap: Try to track down why `initial_libdir` sometimes fails) - rust-lang#129939 (explain why Rvalue::Len still exists) - rust-lang#129940 (s390x: Fix a regression related to backchain feature) - rust-lang#129942 (copy rustc rustlib artifacts from ci-rustc) - rust-lang#129943 (use the bootstrapped compiler for `test-float-parse` test) - rust-lang#129944 (Add compat note for trait solver change) - rust-lang#129947 (Add digit separators in `Duration` examples) - rust-lang#129955 (Temporarily remove fmease from the review rotation) - rust-lang#129957 (forward linker option to lint-docs) r? `@ghost` `@rustbot` modify labels: rollup
matthiaskrgr added a commit to matthiaskrgr/rust that referenced this pull request Sep 5, 2024
…RalfJung s390x: Fix a regression related to backchain feature In rust-lang#127506, we introduced a new IBM Z-specific target feature, `backchain`. This particular `target-feature` was available as a function-level attribute in LLVM 17 and below, so some hacks were used to avoid blowing up LLVM when querying the supported LLVM features. This led to an unfortunate regression where `cfg!(target-feature = "backchain")` will always return true. This pull request aims to fix this issue, and a test has been introduced to ensure it will never happen again. Fixes rust-lang#129927. r? `@RalfJung`
bors added a commit to rust-lang-ci/rust that referenced this pull request Sep 5, 2024
…iaskrgr Rollup of 12 pull requests Successful merges: - rust-lang#128919 (Add an internal lint that warns when accessing untracked data) - rust-lang#129472 (fix ICE when `asm_const` and `const_refs_to_static` are combined) - rust-lang#129653 (clarify that addr_of creates read-only pointers) - rust-lang#129775 (bootstrap: Try to track down why `initial_libdir` sometimes fails) - rust-lang#129939 (explain why Rvalue::Len still exists) - rust-lang#129940 (s390x: Fix a regression related to backchain feature) - rust-lang#129942 (copy rustc rustlib artifacts from ci-rustc) - rust-lang#129943 (use the bootstrapped compiler for `test-float-parse` test) - rust-lang#129944 (Add compat note for trait solver change) - rust-lang#129947 (Add digit separators in `Duration` examples) - rust-lang#129955 (Temporarily remove fmease from the review rotation) - rust-lang#129957 (forward linker option to lint-docs) Failed merges: - rust-lang#129471 ([rustdoc] Sort impl associated items by kinds and then by appearance) r? `@ghost` `@rustbot` modify labels: rollup
bors added a commit to rust-lang-ci/rust that referenced this pull request Sep 5, 2024
…iaskrgr Rollup of 12 pull requests Successful merges: - rust-lang#128919 (Add an internal lint that warns when accessing untracked data) - rust-lang#129472 (fix ICE when `asm_const` and `const_refs_to_static` are combined) - rust-lang#129653 (clarify that addr_of creates read-only pointers) - rust-lang#129775 (bootstrap: Try to track down why `initial_libdir` sometimes fails) - rust-lang#129939 (explain why Rvalue::Len still exists) - rust-lang#129940 (s390x: Fix a regression related to backchain feature) - rust-lang#129942 (copy rustc rustlib artifacts from ci-rustc) - rust-lang#129943 (use the bootstrapped compiler for `test-float-parse` test) - rust-lang#129944 (Add compat note for trait solver change) - rust-lang#129947 (Add digit separators in `Duration` examples) - rust-lang#129955 (Temporarily remove fmease from the review rotation) - rust-lang#129957 (forward linker option to lint-docs) Failed merges: - rust-lang#129471 ([rustdoc] Sort impl associated items by kinds and then by appearance) r? `@ghost` `@rustbot` modify labels: rollup
bors added a commit to rust-lang-ci/rust that referenced this pull request Sep 5, 2024
…iaskrgr Rollup of 12 pull requests Successful merges: - rust-lang#128919 (Add an internal lint that warns when accessing untracked data) - rust-lang#129472 (fix ICE when `asm_const` and `const_refs_to_static` are combined) - rust-lang#129653 (clarify that addr_of creates read-only pointers) - rust-lang#129775 (bootstrap: Try to track down why `initial_libdir` sometimes fails) - rust-lang#129939 (explain why Rvalue::Len still exists) - rust-lang#129940 (s390x: Fix a regression related to backchain feature) - rust-lang#129942 (copy rustc rustlib artifacts from ci-rustc) - rust-lang#129943 (use the bootstrapped compiler for `test-float-parse` test) - rust-lang#129944 (Add compat note for trait solver change) - rust-lang#129947 (Add digit separators in `Duration` examples) - rust-lang#129955 (Temporarily remove fmease from the review rotation) - rust-lang#129957 (forward linker option to lint-docs) Failed merges: - rust-lang#129471 ([rustdoc] Sort impl associated items by kinds and then by appearance) r? `@ghost` `@rustbot` modify labels: rollup
| @bors r- |
bors added S-waiting-on-author
I can't reproduce it on my local device (Linux). Unfortunately, I don't own an Apple device to test the issue |
| mmh, lets see if this can land on its own then @bors r=RalfJung rollup=iffy |
bors added S-waiting-on-bors | Sounds unlikely that this PR would lead to an LLVM crash... I guess we'll see. |
bors added a commit to rust-lang-ci/rust that referenced this pull request Sep 7, 2024
…mpiler-errors Rollup of 9 pull requests Successful merges: - rust-lang#128871 (bypass linker configuration and cross target check for specific commands) - rust-lang#129468 ([testsuite][cleanup] Remove all usages of `dont_merge` hack to avoid function merging) - rust-lang#129614 (Adjust doc comment of Condvar::wait_while) - rust-lang#129840 (Implement suggestions for `elided_named_lifetimes`) - rust-lang#129891 (Do not request sanitizers for naked functions) - rust-lang#129899 (Add Suggestions for Misspelled Keywords) - rust-lang#129940 (s390x: Fix a regression related to backchain feature) - rust-lang#129987 (Don't store region in `CapturedPlace`) - rust-lang#130054 (Add missing quotation marks) r? `@ghost` `@rustbot` modify labels: rollup
bors added a commit to rust-lang-ci/rust that referenced this pull request Sep 7, 2024
…mpiler-errors Rollup of 9 pull requests Successful merges: - rust-lang#128871 (bypass linker configuration and cross target check for specific commands) - rust-lang#129468 ([testsuite][cleanup] Remove all usages of `dont_merge` hack to avoid function merging) - rust-lang#129614 (Adjust doc comment of Condvar::wait_while) - rust-lang#129840 (Implement suggestions for `elided_named_lifetimes`) - rust-lang#129891 (Do not request sanitizers for naked functions) - rust-lang#129899 (Add Suggestions for Misspelled Keywords) - rust-lang#129940 (s390x: Fix a regression related to backchain feature) - rust-lang#129987 (Don't store region in `CapturedPlace`) - rust-lang#130054 (Add missing quotation marks) r? `@ghost` `@rustbot` modify labels: rollup
rust-timer added a commit to rust-lang-ci/rust that referenced this pull request Sep 7, 2024
Rollup merge of rust-lang#129940 - liushuyu:s390x-target-features, r=RalfJung s390x: Fix a regression related to backchain feature In rust-lang#127506, we introduced a new IBM Z-specific target feature, `backchain`. This particular `target-feature` was available as a function-level attribute in LLVM 17 and below, so some hacks were used to avoid blowing up LLVM when querying the supported LLVM features. This led to an unfortunate regression where `cfg!(target-feature = "backchain")` will always return true. This pull request aims to fix this issue, and a test has been introduced to ensure it will never happen again. Fixes rust-lang#129927. r? `@RalfJung`
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
5 participants
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 #127506, we introduced a new IBM Z-specific target feature,
backchain.This particular
target-featurewas available as a function-level attribute in LLVM 17 and below, so some hacks were used to avoid blowing up LLVM when querying the supported LLVM features.This led to an unfortunate regression where
cfg!(target-feature = "backchain")will always return true.This pull request aims to fix this issue, and a test has been introduced to ensure it will never happen again.
Fixes #129927.
r? @RalfJung