github/cranelift - cranelift - Gitea: Git with home nas server

Author	SHA1	Message	Date
Chris Fallin	5d671952ee	Cranelift: do not check in generated ISLE code; regenerate on every compile. (#4143 ) 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.	3 years ago
bjorn3	08f72d7084	Fix ensure_deterministic_build.sh	4 years ago
Alex Crichton	7beea5ee88	Move determinism check to wasmtime's CI	5 years ago
Benjamin Bouvier	81782f8efa	Ensure builds are deterministic in CI. This introduces a script that has a high probability of failing if the Rust source code generated by the meta crate is not consistent accross build script runs. It also adds a new CI job to run it on each push, on a single platform.	5 years ago