Several of these badges were out of date, with some crates in wide production
use marked as "experimental". Insted of trying to keep them up to date, just
remove them, since they are [no longer displayed on crates.io].
[no longer displayed on crates.io]: https://doc.rust-lang.org/cargo/reference/manifest.html#the-badges-section
* Leverage Cargo's workspace inheritance feature
This commit is an attempt to reduce the complexity of the Cargo
manifests in this repository with Cargo's workspace-inheritance feature
becoming stable in Rust 1.64.0. This feature allows specifying fields in
the root workspace `Cargo.toml` which are then reused throughout the
workspace. For example this PR shares definitions such as:
* All of the Wasmtime-family of crates now use `version.workspace =
true` to have a single location which defines the version number.
* All crates use `edition.workspace = true` to have one default edition
for the entire workspace.
* Common dependencies are listed in `[workspace.dependencies]` to avoid
typing the same version number in a lot of different places (e.g. the
`wasmparser = "0.89.0"` is now in just one spot.
Currently the workspace-inheritance feature doesn't allow having two
different versions to inherit, so all of the Cranelift-family of crates
still manually specify their version. The inter-crate dependencies,
however, are shared amongst the root workspace.
This feature can be seen as a method of "preprocessing" of sorts for
Cargo manifests. This will help us develop Wasmtime but shouldn't have
any actual impact on the published artifacts -- everything's dependency
lists are still the same.
* Fix wasi-crypto tests
This commit replaces #4869 and represents the actual version bump that
should have happened had I remembered to bump the in-tree version of
Wasmtime to 1.0.0 prior to the branch-cut date. Alas!
This PR fixes#4066: it modifies the Cranelift `build.rs` workflow to
invoke the ISLE DSL compiler on every compilation, rather than only
when the user specifies a special "rebuild ISLE" feature.
The main benefit of this change is that it vastly simplifies the mental
model required of developers, and removes a bunch of failure modes
we have tried to work around in other ways. There is now just one
"source of truth", the ISLE source itself, in the repository, and so there
is no need to understand a special "rebuild" step and how to handle
merge errors. There is no special process needed to develop the compiler
when modifying the DSL. And there is no "noise" in the git history produced
by constantly-regenerated files.
The two main downsides we discussed in #4066 are:
- Compile time could increase, by adding more to the "meta" step before the main build;
- It becomes less obvious where the source definitions are (everything becomes
more "magic"), which makes exploration and debugging harder.
This PR addresses each of these concerns:
1. To maintain reasonable compile time, it includes work to cut down the
dependencies of the `cranelift-isle` crate to *nothing* (only the Rust stdlib),
in the default build. It does this by putting the error-reporting bits
(`miette` crate) under an optional feature, and the logging (`log` crate) under
a feature-controlled macro, and manually writing an `Error` impl rather than
using `thiserror`. This completely avoids proc macros and the `syn` build slowness.
The user can still get nice errors out of `miette`: this is enabled by specifying
a Cargo feature `--features isle-errors`.
2. To allow the user to optionally inspect the generated source, which nominally
lives in a hard-to-find path inside `target/` now, this PR adds a feature `isle-in-source-tree`
that, as implied by the name, moves the target for ISLE generated source into
the source tree, at `cranelift/codegen/isle_generated_source/`. It seems reasonable
to do this when an explicit feature (opt-in) is specified because this is how ISLE regeneration
currently works as well. To prevent surprises, if the feature is *not* specified, the
build fails if this directory exists.
* Upgrade all crates to the Rust 2021 edition
I've personally started using the new format strings for things like
`panic!("some message {foo}")` or similar and have been upgrading crates
on a case-by-case basis, but I think it probably makes more sense to go
ahead and blanket upgrade everything so 2021 features are always
available.
* Fix compile of the C API
* Fix a warning
* Fix another warning
* Bump to 0.36.0
* Add a two-week delay to Wasmtime's release process
This commit is a proposal to update Wasmtime's release process with a
two-week delay from branching a release until it's actually officially
released. We've had two issues lately that came up which led to this proposal:
* In #3915 it was realized that changes just before the 0.35.0 release
weren't enough for an embedding use case, but the PR didn't meet the
expectations for a full patch release.
* At Fastly we were about to start rolling out a new version of Wasmtime
when over the weekend the fuzz bug #3951 was found. This led to the
desire internally to have a "must have been fuzzed for this long"
period of time for Wasmtime changes which we felt were better
reflected in the release process itself rather than something about
Fastly's own integration with Wasmtime.
This commit updates the automation for releases to unconditionally
create a `release-X.Y.Z` branch on the 5th of every month. The actual
release from this branch is then performed on the 20th of every month,
roughly two weeks later. This should provide a period of time to ensure
that all changes in a release are fuzzed for at least two weeks and
avoid any further surprises. This should also help with any last-minute
changes made just before a release if they need tweaking since
backporting to a not-yet-released branch is much easier.
Overall there are some new properties about Wasmtime with this proposal
as well:
* The `main` branch will always have a section in `RELEASES.md` which is
listed as "Unreleased" for us to fill out.
* The `main` branch will always be a version ahead of the latest
release. For example it will be bump pre-emptively as part of the
release process on the 5th where if `release-2.0.0` was created then
the `main` branch will have 3.0.0 Wasmtime.
* Dates for major versions are automatically updated in the
`RELEASES.md` notes.
The associated documentation for our release process is updated and the
various scripts should all be updated now as well with this commit.
* Add notes on a security patch
* Clarify security fixes shouldn't be previewed early on CI
On the build side, this commit introduces two things:
1. The automatic generation of various ISLE definitions for working with
CLIF. Specifically, it generates extern type definitions for clif opcodes and
the clif instruction data `enum`, as well as extractors for matching each clif
instructions. This happens inside the `cranelift-codegen-meta` crate.
2. The compilation of ISLE DSL sources to Rust code, that can be included in the
main `cranelift-codegen` compilation.
Next, this commit introduces the integration glue code required to get
ISLE-generated Rust code hooked up in clif-to-x64 lowering. When lowering a clif
instruction, we first try to use the ISLE code path. If it succeeds, then we are
done lowering this instruction. If it fails, then we proceed along the existing
hand-written code path for lowering.
Finally, this commit ports many lowering rules over from hand-written,
open-coded Rust to ISLE.
In the process of supporting ISLE, this commit also makes the x64 `Inst` capable
of expressing SSA by supporting 3-operand forms for all of the existing
instructions that only have a 2-operand form encoding:
dst = src1 op src2
Rather than only the typical x86-64 2-operand form:
dst = dst op src
This allows `MachInst` to be in SSA form, since `dst` and `src1` are
disentangled.
("3-operand" and "2-operand" are a little bit of a misnomer since not all
operations are binary operations, but we do the same thing for, e.g., unary
operations by disentangling the sole operand from the result.)
There are two motivations for this change:
1. To allow ISLE lowering code to have value-equivalence semantics. We want ISLE
lowering to translate a CLIF expression that evaluates to some value into a
`MachInst` expression that evaluates to the same value. We want both the
lowering itself and the resulting `MachInst` to be pure and referentially
transparent. This is both a nice paradigm for compiler writers that are
authoring and maintaining lowering rules and is a prerequisite to any sort of
formal verification of our lowering rules in the future.
2. Better align `MachInst` with `regalloc2`'s API, which requires that the input
be in SSA form.
* Use stable Rust on CI to test the x64 backend
This commit leverages the newly-released 1.51.0 compiler to test the
new backend on Windows and Linux with a stable compiler instead of a
nightly compiler. This isolates the nightly build to just the nightly
documentation generation and fuzzing, both of which rely on nightly for
the best results right now.
* Use updated stable in book build job
* Run rustfmt for new stable
* Silence new warnings for wasi-nn
* Allow some dead code in the x64 backend
Looks like new rustc is better about emitting some dead-code warnings
* Update rust in peepmatic job
* Fix a test in the pooling allocator
* Remove `package.metdata.docs.rs` temporarily
Needs resolution of https://github.com/rust-lang/cargo/pull/9300 first
* Fix a warning in a wasi-nn example
* Wasmtime 0.15.0 and Cranelift 0.62.0. (#1398)
* Bump more ad-hoc versions.
* Add build.rs to wasi-common's Cargo.toml.
* Update the env var name in more places.
* Remove a redundant echo.
This patch updates or removes all references to the Cranelift repository. It affects links in README documents, issues that were transferred to the Wasmtime repository, CI badges, and a small bunch of sundry items.
