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This includes a qemu update from 8.2.2 to 9.2.1 which should hopefully
fix some bugs we have encountered.
PowerPC64LE is skipped for now because the new version seems to cause a
number of new SIGILLs.
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Many contributions to compiler-builtins don't have any need to touch
libm, and could get by with the few minutes of CI for compiler-builtins
rather than the ~30 minutes for libm. We already have some scripts that
handle changed file detection, so expand its use to skip libm CI if it
doesn't need to run.
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This makes it possible to use nextest within the container.
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This crate doesn't need to be a default member since it requires the
opposite settings from everything else. Exclude it from the workspace
and run it only when explicitly requested.
This also makes `cargo t --no-default-features` work without additional
qualifiers. `--no-default-features` still needs to be passed to ensure
`#![compiler_builtins]` does not get set.
compiler-builtins needs doctests disabled in order for everything to
work correctly, since this causes an error running rustdoc that is
unrelated to features (our `compiler_builtins` is getting into the crate
graph before that from the sysroot, but `#![compiler_builtins]` is not
set).
We can also remove `test = false` and `doctest = false` in
`builtins-test` since these no longer cause issues. This is unlikely to
be used but it is better to not quietly skip if anything ever gets added
by accident.
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Prepare for having the repositories combined by ensuring EMULATED,
RUST_BACKTRACE, and CI are set or forwarded as applicable. Also
re-indent the file to four spaces and do some reorganization.
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The current setup has the `Cargo.toml` for `compiler-builtins` at the
repository root, which means all support crates and other files are
located within the package root. This works for now but is not the
cleanest setup since files that should or shouldn't be included in the
package need to be configured in `Cargo.toml`. If we eventually merge
`libm` development into this repository, it would be nice to make this
separation more straightforward.
Begin cleaning things up by moving the crate source to a new
`compiler-builtins` directory and adding a virtual manifest. For now the
`libm` submodule is also moved, but in the future it can likely move
back to the top level (ideally `compiler-builtins/src` would contain a
symlink to `libm/src/math`, but unfortunately it seems like Cargo does
not like something about the submodule + symlink combination).
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These were preventing building via Docker locally.
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There are currently a lot of warnings printed in CI, mostly dead code.
Update CI to deny warnings.
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Allow using the `rust-lang/rust:nightly` docker image to run tests in
cases where the host rust and cargo cannot be used, such as non-linux
hosts.
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This commit removes the `compiler-rt` submodule from this repository.
The goal here is to align the `compiler-rt` used for compiling C
intrinsics with the upstream rust-lang/rust's usage of `llvm-project`.
Currently we have both an `llvm-project` repository as well as
`compiler-rt`, but they can naturally get out of sync and it's just one
more submodule to manage.
The thinking here is that the feature `c` for this crate, when
activated, will require the user to configure where the source code for
`compiler-rt` is present. This places the onus on the builder of
`compiler-builtins` to check-out and arrange for the appropriate
`compiler-rt` source code to be placed somewhere. For rust-lang/rust
this is already done with the `llvm-project` submodule, and we can
arrange for it to happen on this crate's CI anyway.
For users of this crate this is a bit of a bummer, but `c` is disabled
by default anyway and it seems unlikely that `c` is explicitly opted in
to all that much. (given the purpose of this crate)
This should allow us to archive the `compiler-rt` repository and simply
use `llvm-project` in the rust-lang/rust repository.
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This commit fixes a bug accidentally introduced in #285 where some
lingering references remained to `#[cfg(thumbv6m)]` but this, since the
historical revert, was renamed to `#[cfg(thumb_1)]`. This caused on the
thumbv6m platform for the intrinsics to be accidentally omitted because
the build script didn't actually compile them but the Rust code thought
the C code was in use.
After correcting the `#[cfg]` statements the CI configuration for the
`thumb*` family of targets was all updated. The support for xargo
testing was removed from `run.sh` since it had long since bitrotted, and
the script was updated to simply build the intrinsics example to attempt
to link for each of these targets. This in turn exposed the bug locally
and allowed to confirm a fix once the `#[cfg]` statements were
corrected.
cc rust-lang/rust#60782
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This reverts commit 681aaa914dea7cae8252c33023604ce6c91808bd.
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notable changes in the docker-based testing infrastructure
- the docker containers can now modify $CARGO_HOME, to re-use the outer
Cargo registry, and the target directory to re-use build artifacts.
- the docker containers are removed when their execution finishes
because it's no longer necessary to re-start them to inspect them
because all the interesting output is in the outer target directory
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This commit moves over most of the testing infrastructure to in-tree docker
images that are all dispatched to from Travis (no other test configuration).
This allows versioning modifications to the test infrastructure as well as the
code itself. Additionally separate docker images allows for easy modification of
one without worrying about tampering of others as well as easy addition of new
targets by simply adding a new `Dockerfile`.
Additionally this commit bundles the master version of the `compiler-rt` source
repository from `llvm-mirror/compiler-rt` to test against. The compiler-rt
library itself is compiled as a `cdylib` which is then dynamically located at
runtime and we look for symbols in. There's a few hoops here, but they currently
get the job done.
All tests now execute against both gcc_s and compiler-rt, and this
testing strategy is now all hidden behind a macro as well (refactoring
all existing tests along the way).
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