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Stabilize bench_black_box
This PR stabilize `feature(bench_black_box)`.
```rust
pub fn black_box<T>(dummy: T) -> T;
```
The FCP was completed in https://github.com/rust-lang/rust/issues/64102.
`@rustbot` label +T-libs-api -T-libs
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Enable eager checks for memory sanitizer
Fixes #99179
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LLVM commit https://github.com/llvm/llvm-project/commit/057cabd997aeaef136e1e14f2ee645bd5bb197dd removed the function from the msan error message. This adapts our test accordingly.
Found via our experimental rust + llvm @ HEAD bot:
https://buildkite.com/llvm-project/rust-llvm-integrate-prototype/builds/12634#018289fe-b0bc-4bab-89b3-fb1d4e38f6db
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The new implementation allows some `memcpy`s to be optimized away,
so the uninit value in ui/sanitize/memory.rs is constructed directly
onto the return place. Therefore the sanitizer now says that the
value is allocated by `main` rather than `random`.
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Doesn't work though, because compiletest doesn't process ignores on a
per-revision manner.
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reduce threads spawned by ui-tests
The test harness already spawns enough tests to keep all cores busy.
Individual tests should keep their own threading to a minimum to avoid context switch overhead.
When running ui tests with lld enabled this shaves about 10% off that testsuite on my machine.
Resolves #81946
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the test harness already spawns enough tests for all cores, individual
tests should keep their own threading to a minimum to avoid context switch
overhead
some tests fail with 1 CGU, so explicit compile flags have been added
to keep their old behavior
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This commit adds an additional target property – `supported_sanitizers`,
and replaces the hardcoded allowlists in argument parsing to use this
new property.
Fixes #81802
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This commit grepped for LLVM_VERSION_GE, LLVM_VERSION_LT, get_major_version and
min-llvm-version and statically evaluated every expression possible
(and sensible) assuming that the LLVM version is >=9 now
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Diagnose use of incompatible sanitizers
Emit an error when incompatible sanitizer are configured through command
line options. Previously the last one configured prevailed and others
were silently ignored.
Additionally use a set to represent configured sanitizers, making it
possible to enable multiple sanitizers at once. At least in principle,
since currently all of them are considered to be incompatible with
others.
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Emit an error when incompatible sanitizer are configured through command
line options. Previously the last one configured prevailed and others
were silently ignored.
Additionally use a set to represent configured sanitizers, making it
possible to enable multiple sanitizers at once. At least in principle,
since currently all of them are considered to be incompatible with
others.
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Add needs-sanitizer-{address,leak,memory,thread} directive indicating
that test requires target with support for specific sanitizer.
This is an addition to the existing needs-sanitizer-support directive
indicating that test requires a sanitizer runtime library.
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Ensure that inliner inserts lifetime markers if they have been emitted during
codegen. Otherwise if allocas from inlined functions are merged together,
lifetime markers from one function might invalidate load & stores performed
by the other one.
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Although `stack_overflow::init` runs very early in the process, even
before `main`, there may already be signal handlers installed for things
like the address sanitizer. In that case, just leave it alone, and don't
bother trying to allocate our own signal stacks either.
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Compile address sanitizer test with debuginfo
This makes error-pattern to match regardless of current
configuration of `rust.debuginfo-level-tests` in `config.toml`.
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This makes error-pattern to match regardless of current
configuration of `rust.debuginfo-level-tests` in `config.toml`.
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Additionally verify that the current implementation of LLVM version
check (which uses lexicographic ordering) is good enough to exclude
versions before LLVM 9, where the new LLVM pass manager is unsupported.
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