…riddle

nested aux-build in tests/rustdoc/ tests

* Fixes bug that prevented using nested aux-build in `tests/rustdoc/` tests. Before, `fn document` and the auxiliary builder disagreed about where to find the nested aux-build source file (`auxiliary/auxiliary/aux.rs` vs `auxiliary/aux.rs`), preventing them from building. Picked the latter in line with other builders in compiletest.
* Adds `//@ doc-flags` header, which forwards flags to rustdoc and not rustc.
* Adds `//@ unique-doc-out-dir` header, which sets the --out-dir for the rustdoc invocation to a unique directory: `<root out dir>/docs/<test name>/doc`
* Changes working directory of the rustdoc invocation to the root out directory (common among all aux-builds). Prior art: exec_compiled_test in runtest.rs
* Adds tests that use nested aux builds and new headers

These changes provide useful capabilities for writing rustdoc tests on their own. They are also needed to test the implementation for the [mergable-rustdoc-cross-crate-info](rust-lang/rfcs#3662) RFC.

try-job: x86_64-msvc

…riddle

nested aux-build in tests/rustdoc/ tests

* Fixes bug that prevented using nested aux-build in `tests/rustdoc/` tests. Before, `fn document` and the auxiliary builder disagreed about where to find the nested aux-build source file (`auxiliary/auxiliary/aux.rs` vs `auxiliary/aux.rs`), preventing them from building. Picked the latter in line with other builders in compiletest.
* Adds `//@ doc-flags` header, which forwards flags to rustdoc and not rustc.
* Adds `//@ unique-doc-out-dir` header, which sets the --out-dir for the rustdoc invocation to a unique directory: `<root out dir>/docs/<test name>/doc`
* Changes working directory of the rustdoc invocation to the root out directory (common among all aux-builds). Prior art: exec_compiled_test in runtest.rs
* Adds tests that use nested aux builds and new headers

These changes provide useful capabilities for writing rustdoc tests on their own. They are also needed to test the implementation for the [mergable-rustdoc-cross-crate-info](rust-lang/rfcs#3662) RFC.

try-job: x86_64-msvc

…riddle

nested aux-build in tests/rustdoc/ tests

* Fixes bug that prevented using nested aux-build in `tests/rustdoc/` tests. Before, `fn document` and the auxiliary builder disagreed about where to find the nested aux-build source file (`auxiliary/auxiliary/aux.rs` vs `auxiliary/aux.rs`), preventing them from building. Picked the latter in line with other builders in compiletest.
* Adds `//@ doc-flags` header, which forwards flags to rustdoc and not rustc.
* Adds `//@ unique-doc-out-dir` header, which sets the --out-dir for the rustdoc invocation to a unique directory: `<root out dir>/docs/<test name>/doc`
* Changes working directory of the rustdoc invocation to the root out directory (common among all aux-builds). Prior art: exec_compiled_test in runtest.rs
* Adds tests that use nested aux builds and new headers

These changes provide useful capabilities for writing rustdoc tests on their own. They are also needed to test the implementation for the [mergable-rustdoc-cross-crate-info](rust-lang/rfcs#3662) RFC.

try-job: x86_64-msvc

…riddle

nested aux-build in tests/rustdoc/ tests

* Fixes bug that prevented using nested aux-build in `tests/rustdoc/` tests. Before, `fn document` and the auxiliary builder disagreed about where to find the nested aux-build source file (`auxiliary/auxiliary/aux.rs` vs `auxiliary/aux.rs`), preventing them from building. Picked the latter in line with other builders in compiletest.
* Adds `//@ doc-flags` header, which forwards flags to rustdoc and not rustc.
* Adds `//@ unique-doc-out-dir` header, which sets the --out-dir for the rustdoc invocation to a unique directory: `<root out dir>/docs/<test name>/doc`
* Changes working directory of the rustdoc invocation to the root out directory (common among all aux-builds). Prior art: exec_compiled_test in runtest.rs
* Adds tests that use nested aux builds and new headers

These changes provide useful capabilities for writing rustdoc tests on their own. They are also needed to test the implementation for the [mergable-rustdoc-cross-crate-info](rust-lang/rfcs#3662) RFC.

try-job: x86_64-msvc

…iaskrgr

Rollup of 6 pull requests

Successful merges:

 - rust-lang#122049 (Promote riscv64gc-unknown-linux-musl to tier 2)
 - rust-lang#125558 (Tweak type inference for `const` operands in inline asm)
 - rust-lang#126704 (Added SHA512, SM3, SM4 target-features and `sha512_sm_x86` feature gate)
 - rust-lang#128161 (nested aux-build in tests/rustdoc/ tests)
 - rust-lang#128483 (Still more `cfg` cleanups)
 - rust-lang#128528 (Finish removing `has_cpuid`)

r? `@ghost`
`@rustbot` modify labels: rollup

…riddle

nested aux-build in tests/rustdoc/ tests

* Fixes bug that prevented using nested aux-build in `tests/rustdoc/` tests. Before, `fn document` and the auxiliary builder disagreed about where to find the nested aux-build source file (`auxiliary/auxiliary/aux.rs` vs `auxiliary/aux.rs`), preventing them from building. Picked the latter in line with other builders in compiletest.
* Adds `//@ doc-flags` header, which forwards flags to rustdoc and not rustc.
* Adds `//@ unique-doc-out-dir` header, which sets the --out-dir for the rustdoc invocation to a unique directory: `<root out dir>/docs/<test name>/doc`
* Changes working directory of the rustdoc invocation to the root out directory (common among all aux-builds). Prior art: exec_compiled_test in runtest.rs
* Adds tests that use nested aux builds and new headers

These changes provide useful capabilities for writing rustdoc tests on their own. They are also needed to test the implementation for the [mergable-rustdoc-cross-crate-info](rust-lang/rfcs#3662) RFC.

try-job: x86_64-msvc

…iaskrgr

Rollup of 5 pull requests

Successful merges:

 - rust-lang#122049 (Promote riscv64gc-unknown-linux-musl to tier 2)
 - rust-lang#126704 (Added SHA512, SM3, SM4 target-features and `sha512_sm_x86` feature gate)
 - rust-lang#128161 (nested aux-build in tests/rustdoc/ tests)
 - rust-lang#128483 (Still more `cfg` cleanups)
 - rust-lang#128528 (Finish removing `has_cpuid`)

r? `@ghost`
`@rustbot` modify labels: rollup

…riddle

nested aux-build in tests/rustdoc/ tests

* Fixes bug that prevented using nested aux-build in `tests/rustdoc/` tests. Before, `fn document` and the auxiliary builder disagreed about where to find the nested aux-build source file (`auxiliary/auxiliary/aux.rs` vs `auxiliary/aux.rs`), preventing them from building. Picked the latter in line with other builders in compiletest.
* Adds `//@ doc-flags` header, which forwards flags to rustdoc and not rustc.
* Adds `//@ unique-doc-out-dir` header, which sets the --out-dir for the rustdoc invocation to a unique directory: `<root out dir>/docs/<test name>/doc`
* Changes working directory of the rustdoc invocation to the root out directory (common among all aux-builds). Prior art: exec_compiled_test in runtest.rs
* Adds tests that use nested aux builds and new headers

These changes provide useful capabilities for writing rustdoc tests on their own. They are also needed to test the implementation for the [mergable-rustdoc-cross-crate-info](rust-lang/rfcs#3662) RFC.

try-job: x86_64-msvc

…riddle

nested aux-build in tests/rustdoc/ tests

* Fixes bug that prevented using nested aux-build in `tests/rustdoc/` tests. Before, `fn document` and the auxiliary builder disagreed about where to find the nested aux-build source file (`auxiliary/auxiliary/aux.rs` vs `auxiliary/aux.rs`), preventing them from building. Picked the latter in line with other builders in compiletest.
* Adds `//@ doc-flags` header, which forwards flags to rustdoc and not rustc.
* Adds `//@ unique-doc-out-dir` header, which sets the --out-dir for the rustdoc invocation to a unique directory: `<root out dir>/docs/<test name>/doc`
* Changes working directory of the rustdoc invocation to the root out directory (common among all aux-builds). Prior art: exec_compiled_test in runtest.rs
* Adds tests that use nested aux builds and new headers

These changes provide useful capabilities for writing rustdoc tests on their own. They are also needed to test the implementation for the [mergable-rustdoc-cross-crate-info](rust-lang/rfcs#3662) RFC.

try-job: x86_64-msvc

Rollup of 9 pull requests

Successful merges:

 - rust-lang#126704 (Added SHA512, SM3, SM4 target-features and `sha512_sm_x86` feature gate)
 - rust-lang#127095 (Migrate `reproducible-build-2` and `stable-symbol-names` `run-make` tests to rmake)
 - rust-lang#128107 (Migrate `raw-dylib-alt-calling-convention`, `raw-dylib-c` and `redundant-libs` `run-make` tests to rmake)
 - rust-lang#128161 (nested aux-build in tests/rustdoc/ tests)
 - rust-lang#128356 (Migrate `cross-lang-lto-clang` and `cross-lang-lto-pgo-smoketest` `run-make` tests to rmake)
 - rust-lang#128404 (Revert recent changes to dead code analysis)
 - rust-lang#128483 (Still more `cfg` cleanups)
 - rust-lang#128528 (Finish removing `has_cpuid`)
 - rust-lang#128557 (chore: use shorthand initializer)

r? `@ghost`
`@rustbot` modify labels: rollup

…riddle

nested aux-build in tests/rustdoc/ tests

* Fixes bug that prevented using nested aux-build in `tests/rustdoc/` tests. Before, `fn document` and the auxiliary builder disagreed about where to find the nested aux-build source file (`auxiliary/auxiliary/aux.rs` vs `auxiliary/aux.rs`), preventing them from building. Picked the latter in line with other builders in compiletest.
* Adds `//@ doc-flags` header, which forwards flags to rustdoc and not rustc.
* Adds `//@ unique-doc-out-dir` header, which sets the --out-dir for the rustdoc invocation to a unique directory: `<root out dir>/docs/<test name>/doc`
* Changes working directory of the rustdoc invocation to the root out directory (common among all aux-builds). Prior art: exec_compiled_test in runtest.rs
* Adds tests that use nested aux builds and new headers

These changes provide useful capabilities for writing rustdoc tests on their own. They are also needed to test the implementation for the [mergable-rustdoc-cross-crate-info](rust-lang/rfcs#3662) RFC.

try-job: x86_64-msvc

Rollup of 10 pull requests

Successful merges:

 - rust-lang#126704 (Added SHA512, SM3, SM4 target-features and `sha512_sm_x86` feature gate)
 - rust-lang#127095 (Migrate `reproducible-build-2` and `stable-symbol-names` `run-make` tests to rmake)
 - rust-lang#127586 (Add `#[must_use]` to some `into_raw*` functions.)
 - rust-lang#128161 (nested aux-build in tests/rustdoc/ tests)
 - rust-lang#128303 (Enable `std::io::copy` specialisation for `std::pipe::{PipeReader, PipeWriter}`)
 - rust-lang#128356 (Migrate `cross-lang-lto-clang` and `cross-lang-lto-pgo-smoketest` `run-make` tests to rmake)
 - rust-lang#128368 (Formatting tweaks)
 - rust-lang#128404 (Revert recent changes to dead code analysis)
 - rust-lang#128483 (Still more `cfg` cleanups)
 - rust-lang#128557 (chore: use shorthand initializer)

r? `@ghost`
`@rustbot` modify labels: rollup

Rollup of 10 pull requests

Successful merges:

 - rust-lang#126704 (Added SHA512, SM3, SM4 target-features and `sha512_sm_x86` feature gate)
 - rust-lang#127095 (Migrate `reproducible-build-2` and `stable-symbol-names` `run-make` tests to rmake)
 - rust-lang#127586 (Add `#[must_use]` to some `into_raw*` functions.)
 - rust-lang#128161 (nested aux-build in tests/rustdoc/ tests)
 - rust-lang#128303 (Enable `std::io::copy` specialisation for `std::pipe::{PipeReader, PipeWriter}`)
 - rust-lang#128356 (Migrate `cross-lang-lto-clang` and `cross-lang-lto-pgo-smoketest` `run-make` tests to rmake)
 - rust-lang#128368 (Formatting tweaks)
 - rust-lang#128404 (Revert recent changes to dead code analysis)
 - rust-lang#128483 (Still more `cfg` cleanups)
 - rust-lang#128557 (chore: use shorthand initializer)

r? `@ghost`
`@rustbot` modify labels: rollup

…iaskrgr

Rollup of 7 pull requests

Successful merges:

 - rust-lang#126704 (Added SHA512, SM3, SM4 target-features and `sha512_sm_x86` feature gate)
 - rust-lang#127586 (Add `#[must_use]` to some `into_raw*` functions.)
 - rust-lang#128161 (nested aux-build in tests/rustdoc/ tests)
 - rust-lang#128303 (Enable `std::io::copy` specialisation for `std::pipe::{PipeReader, PipeWriter}`)
 - rust-lang#128368 (Formatting tweaks)
 - rust-lang#128483 (Still more `cfg` cleanups)
 - rust-lang#128557 (chore: use shorthand initializer)

r? `@ghost`
`@rustbot` modify labels: rollup

Rollup merge of rust-lang#128161 - EtomicBomb:just-compiletest, r=notriddle

nested aux-build in tests/rustdoc/ tests

* Fixes bug that prevented using nested aux-build in `tests/rustdoc/` tests. Before, `fn document` and the auxiliary builder disagreed about where to find the nested aux-build source file (`auxiliary/auxiliary/aux.rs` vs `auxiliary/aux.rs`), preventing them from building. Picked the latter in line with other builders in compiletest.
* Adds `//@ doc-flags` header, which forwards flags to rustdoc and not rustc.
* Adds `//@ unique-doc-out-dir` header, which sets the --out-dir for the rustdoc invocation to a unique directory: `<root out dir>/docs/<test name>/doc`
* Changes working directory of the rustdoc invocation to the root out directory (common among all aux-builds). Prior art: exec_compiled_test in runtest.rs
* Adds tests that use nested aux builds and new headers

These changes provide useful capabilities for writing rustdoc tests on their own. They are also needed to test the implementation for the [mergable-rustdoc-cross-crate-info](rust-lang/rfcs#3662) RFC.

try-job: x86_64-msvc