By exposing the target information through `CompilerConfig`,
compiler(only LLVM at the moment) could create a machine with
different CPU feature flags other than current host, which makes it
capable to "cross compile" to some degree.
Update #959
This patch updates all the backends to use the definition of
`Trampoline` as defined in the `wasmer_runtime_core::typed_func`
module. That way, there is no copy of that type, and as such, it is
easier to avoid regression (a simple `cargo check` does the job).
This patch also formats the `use` statements in the updated files.
703: Fix compilation on AArch64 Linux. r=losfair a=losfair
This only fixes compilation. Cranelift still reports many `not yet implemented` on AArch64.
Co-authored-by: losfair <zhy20000919@hotmail.com>
666: Bump serde_bytes from 0.11.1 to 0.11.2 r=Hywan a=dependabot-preview[bot]
Bumps [serde_bytes](https://github.com/serde-rs/bytes) from 0.11.1 to 0.11.2.
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*Sourced from [serde_bytes's releases](https://github.com/serde-rs/bytes/releases).*
> ## 0.11.2
> - Support "alloc" feature on stable Rust 1.36+ ([#16](https://github-redirect.dependabot.com/serde-rs/bytes/issues/16), thanks [@​martindisch](https://github.com/martindisch))
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- [`a626ecc`](a626ecce86) Remove unstable feature attribute for alloc crate
- See full diff in [compare view](https://github.com/serde-rs/bytes/compare/0.11.1...0.11.2)
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695: Bump serde from 1.0.98 to 1.0.99 r=Hywan a=dependabot-preview[bot]
Bumps [serde](https://github.com/serde-rs/serde) from 1.0.98 to 1.0.99.
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> ## v1.0.99
> - Update Syn dependency to 1.0.
>
> *Note: This raises the minimum required compiler version for serde_derive from rustc 1.15 to rustc 1.31. The minimum required compiler version for serde remains at rustc 1.13.*
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- [`8ad6ae7`](8ad6ae71c6) Update serde_derive minimum rustc version to 1.31
- [`3ea85a2`](3ea85a28cf) Update to syn/quote 1.0
- [`273ecdb`](273ecdb786) Update ui tests on nightly-2019-08-16
- [`de40eb7`](de40eb7306) Update serde_derive to use question mark
- [`b9c4407`](b9c44073ce) Update serde_test to use question mark
- [`d6e5947`](d6e5947ad2) Suppress warnings about try! macro
- [`668651e`](668651ee01) Format with rustfmt 2019-07-30
- [`fb1cacc`](fb1cacc10e) Update Attr structs to hold symbols
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Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>
The feed_event() function is called for every wasm binary instruction.
Let's optimize it by storing FunctionEnvironment object in
CraneliftFunctionCodeGenerator, rather than constructing it for every
feed_event() invocation.
This change reduces the time to run "ngix compile" benchmark by 68%:
Before:
nginx compile time: [1.4152 s 1.4186 s 1.4222 s]
Found 1 outliers among 10 measurements (10.00%)
1 (10.00%) high mild
After:
nginx compile time: [447.76 ms 448.32 ms 448.80 ms]
change: [-68.542% -68.440% -68.352%] (p = 0.00 < 0.05)
Performance has improved.
I assume some of the clone() calls are very expensive (Vec::clone(),
likely). I did see libc malloc()/free() high up in "perf top" profiles,
which are eliminted by this change.
I also looked into eliminating FunctionBuilder construction from
feed_event(). That turns out to be painful on lifetime rules because it
borrows bunch of other objects, so I am leaving it for someone who knows
the code better than I do.
