Rollup of 5 pull requests #131506
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Rollup of 5 pull requests #131506
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Enabling a tied feature should not enable the other feature automatically. This was fixed by something in rust-lang#128796, probably rust-lang#128221 or rust-lang#128679.
`rustc_codegen_llvm` and `rustc_codegen_gcc` duplicated logic for checking if tied target features were partially enabled. This commit consolidates these checks into `rustc_codegen_ssa` in the `codegen_fn_attrs` query, which also is run pre-monomorphisation for each function, which ensures that this check is run for unused functions, as would be expected.
…n, r=wesleywiser codegen_ssa: consolidate tied target checks Fixes rust-lang#105110. Fixes rust-lang#105111. `rustc_codegen_llvm` and `rustc_codegen_gcc` duplicated logic for checking if tied target features were partially enabled. This PR consolidates these checks into `rustc_codegen_ssa` in the `codegen_fn_attrs` query, which also is run pre-monomorphisation for each function, which ensures that this check is run for unused functions, as would be expected. Also adds a test confirming that enabling one tied feature doesn't imply another - the appropriate error for this was already being emitted. I did a bisect and narrowed it down to two patches it was likely to be - something in rust-lang#128796, probably rust-lang#128221 or rust-lang#128679.
…zkan
Match std `RUSTFLAGS` for host and target for `mir-opt` test suite to fix double std build/rebuilds
Previously the bootstrap compiletest `Step::run` flow had:
```rs
// ensure that `libproc_macro` is available on the host.
builder.ensure(compile::Std::new(compiler, compiler.host));
// ...
if suite == "mir-opt" {
builder.ensure(compile::Std::new_for_mir_opt_tests(compiler, target));
} else {
builder.ensure(compile::Std::new(compiler, target));
}
```
This can cause unnecessary std rebuilds (even on the same invocation) because if host == target then `builder.ensure(compile::Std::new_for_mir_opt_tests(compiler, target))` will have different `RUSTFLAGS` than `builder.ensure(compile::Std::new(compiler, compiler.host))`.
This PR fixes that by matching up std `RUSTFLAGS` if the test suite is `mir-opt`:
```rs
if suite == "mir-opt" {
builder.ensure(compile::Std::new_for_mir_opt_tests(compiler, compiler.host));
} else {
builder.ensure(compile::Std::new(compiler, compiler.host));
}
```
This is a short-term fix, the better fix is to enforce how `RUSTFLAGS` are handled as described in rust-lang#131437 (comment).
Fixes rust-lang#131437.
…ouxu
add test infra to explicitely test rustc with autodiff/enzyme disabled
I assume this is not what you want for now, but I'll update the PR once I understand how the ignore- directives work.
To summarize the situation, we want a feature gate test where we don't enable the autodiff feature using `#![feature(autodiff)]`. There are two situations.
1) We have a rustc which was build without autodiff support (current default): It gives one error about the feature being needed and one error about this rustc version being build without autodiff support.
2) We have a rustc which was build with autodiff support (i.e. for now a custom build): It gives one error about the feature being needed.
We have a `//```@needs-enzyme```` directive which we can use in revisions for the second case.
However, we have no way to specify that needs-enzyme implies that the second error should not be seen.
This ads a way of passing the following test:
```
//@ revisions: has_support no_support
//```@[has_support]``` needs-enzyme
//```@[no_support]``` needs-enzyme-disabled
#![crate_type = "lib"]
#[autodiff(dfoo, Reverse)]
//[has_support]~^ ERROR use of unstable library feature 'autodiff' [E0658]
//[no_support]~^^ ERROR use of unstable library feature 'autodiff' [E0658]
//[no_support]~| ERROR this rustc version does not support autodiff
fn foo() {}
```
Cherry picking this PR to my frontend pr makes the test above pass in both configurations (enzyme=true/false in config.toml).
I'm open to other changes that make this testcase pass.
r? ```@jieyouxu```
Tracking:
- rust-lang#124509
…mpat-2, r=jieyouxu Compiler & its UI tests: Rename remaining occurrences of "object safe" to "dyn compatible" Follow-up to rust-lang#130826. Part of rust-lang#130852. 1. 1st commit: Fix stupid oversights. Should've been part of rust-lang#130826. 2. 2nd commit: Rename the unstable feature `object_safe_for_dispatch` to `dyn_compatible_for_dispatch`. Might not be worth the churn, you decide. 3. 3rd commit: Apply the renaming to all UI tests (contents and paths).
…h, r=jieyouxu Avoid redundant sysroot additions to `PATH` when linking Currently, `rustc` prepends `$HOME/.rustup/toolchains/stable-aarch64-apple-darwin/lib/rustlib/aarch64-apple-darwin/bin` to the `PATH` three times before invoking the linker, which is unnecessary, once should be enough. Spotted this while trying to get `-Clinker-flavor=gcc` and `-Clinker-flavor=ld` closer together, not really important. ```@rustbot``` A-linkage
rustbot
added
A-testsuite
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@bors r+ rollup=never p=6 |
bors
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S-waiting-on-bors
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Successful merges:
RUSTFLAGSfor host and target formir-opttest suite to fix double std build/rebuilds #131442 (Match stdRUSTFLAGSfor host and target formir-opttest suite to fix double std build/rebuilds)PATHwhen linking #131493 (Avoid redundant sysroot additions toPATHwhen linking)Failed merges:
r? @ghost
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