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Release Wasmtime 0.34.0 (#3768)

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* Bump Wasmtime to 0.34.0

[automatically-tag-and-release-this-commit]

* Add release notes for 0.34.0

* Update release date to today

Co-authored-by: Wasmtime Publish <wasmtime-publish@users.noreply.github.com>
Co-authored-by: Alex Crichton <alex@alexcrichton.com>
This commit is contained in:
wasmtime-publish
2022-02-07 19:16:26 -06:00
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commit 39b88e4e9e
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RELEASES.md
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## 0.34.0
Released 2022-02-07.
### Fixed
* The `wasi-common` default implementation of some attributes of files has been
updated to ensure that `wasi-libc`'s `isatty` function works as intended.
[#3696](https://github.com/bytecodealliance/wasmtime/pull/3696)
* A benign debug assertion related to `externref` and garbage-collection has
been fixed.
[#3734](https://github.com/bytecodealliance/wasmtime/pull/3734)
### Added
* Function names are now automatically demangled when informing profilers of
regions of JIT code to apply Rust-specific demangling rules if applicable.
[#3683](https://github.com/bytecodealliance/wasmtime/pull/3683)
* Support for profiling JIT-generated trampolines with VTune has been added.
[#3687](https://github.com/bytecodealliance/wasmtime/pull/3687)
* Wasmtime now supports a new method of async preemption dubbed "epoch-based
interruption" which is intended to be much more efficient than the current
fuel-based method of preemption.
[#3699](https://github.com/bytecodealliance/wasmtime/pull/3699)
* On Linux Wasmtime will now by default use copy-on-write mappings to initialize
memories of wasm modules where possible, accelerating instantiation by
avoiding costly memory copies. When combined with the pooling allocator this
can also be used to speed up instance-reuse cases due to fewer syscalls to
change memory mappings being necessary.
[#3697](https://github.com/bytecodealliance/wasmtime/pull/3697)
[#3738](https://github.com/bytecodealliance/wasmtime/pull/3738)
[#3760](https://github.com/bytecodealliance/wasmtime/pull/3760)
* Wasmtime now supports the recently-added `sock_accept` WASI function.
[#3711](https://github.com/bytecodealliance/wasmtime/pull/3711)
* Cranelift now has support for specifying blocks as cold.
[#3698](https://github.com/bytecodealliance/wasmtime/pull/3698)
### Changed
* Many more instructions for the x64 backend have been migrated to ISLE,
additionally with refactorings to make incorrect lowerings harder to
accidentally write.
[#3653](https://github.com/bytecodealliance/wasmtime/pull/3653)
[#3659](https://github.com/bytecodealliance/wasmtime/pull/3659)
[#3681](https://github.com/bytecodealliance/wasmtime/pull/3681)
[#3686](https://github.com/bytecodealliance/wasmtime/pull/3686)
[#3688](https://github.com/bytecodealliance/wasmtime/pull/3688)
[#3690](https://github.com/bytecodealliance/wasmtime/pull/3690)
[#3752](https://github.com/bytecodealliance/wasmtime/pull/3752)
* More instructions in the aarch64 backend are now lowered with ISLE.
[#3658](https://github.com/bytecodealliance/wasmtime/pull/3658)
[#3662](https://github.com/bytecodealliance/wasmtime/pull/3662)
* The s390x backend's lowering rules are now almost entirely defined with ISLE.
[#3702](https://github.com/bytecodealliance/wasmtime/pull/3702)
[#3703](https://github.com/bytecodealliance/wasmtime/pull/3703)
[#3706](https://github.com/bytecodealliance/wasmtime/pull/3706)
[#3717](https://github.com/bytecodealliance/wasmtime/pull/3717)
[#3723](https://github.com/bytecodealliance/wasmtime/pull/3723)
[#3724](https://github.com/bytecodealliance/wasmtime/pull/3724)
* Instantiation of modules in Wasmtime has been further optimized now that the
copy-on-write memory initialization removed the previously most-expensive part
of instantiating a module.
[#3727](https://github.com/bytecodealliance/wasmtime/pull/3727)
[#3739](https://github.com/bytecodealliance/wasmtime/pull/3739)
[#3741](https://github.com/bytecodealliance/wasmtime/pull/3741)
[#3742](https://github.com/bytecodealliance/wasmtime/pull/3742)
--------------------------------------------------------------------------------
## 0.33.0
Released 2022-01-05.