Use bitcast to transmute where possible

Rustup to rustc 1.44.0-nightly (485c5fb6e 2020-04-08)

Fix rustc::internals lint warnings

Enable the rust_2018_idioms and unused_lifetimes lints and fix all warnings

They are set to deny by default in the rust-lang/rust repo

Clarify debug mode vs release mode building in the readme

Update the rustc usage section of the readme

Bump libloading from 0.5.2 to 0.6.0 (#957)

Bumps [libloading](https://github.com/nagisa/rust_libloading) from 0.5.2 to 0.6.0.
- [Release notes](https://github.com/nagisa/rust_libloading/releases)
- [Commits](https://github.com/nagisa/rust_libloading/compare/0.5.2...0.6.0)

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Merge pull request #954 from bjorn3/dependabot/cargo/cranelift-codegen-9ca3bf5

Bump cranelift-codegen from `20e7185` to `9ca3bf5`

Bumps [cranelift-codegen](https://github.com/bytecodealliance/wasmtime) from `20e7185` to `9ca3bf5`.
- [Release notes](https://github.com/bytecodealliance/wasmtime/releases)
- [Commits](https://github.com/bytecodealliance/wasmtime/compare/20e71858a1e5a71a4dbdc563c41e3367f06a04f6...9ca3bf532e2ee225b82ad81067e1cf80a8f212de)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Remove the trans_const_place and TransPlaceInterpreter hack

Rustup to rustc 1.44.0-nightly (537ccdf3a 2020-04-02)

Take Place by value instead of by reference

Rustup to rustc 1.44.0-nightly (76b11980a 2020-04-01)

Update dependencies

Update Cranelift

Update actions-rs/cargo

Update Cranelift

Fix opt level names

Rustup to rustc 1.44.0-nightly (211365947 2020-03-30)

Merge pull request #946 from bjorn3/dependabot/cargo/cranelift-codegen-cd900d7

Rustup to rustc 1.44.0-nightly (699f83f52 2020-03-29)

Bump cranelift-codegen from `08e5484` to `cd900d7`

Bumps [cranelift-codegen](https://github.com/bytecodealliance/wasmtime) from `08e5484` to `cd900d7`.
- [Release notes](https://github.com/bytecodealliance/wasmtime/releases)
- [Commits](https://github.com/bytecodealliance/wasmtime/compare/08e5484cdb158b7795587ff7ad0cb04beef6dcd3...cd900d72db7b0ab3e16cf41e63d13828e4c48712)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Update errno

Rustup to rustc 1.44.0-nightly (75208942f 2020-03-27)

Update Cranelift

Use 16bit simd indices

Use vector icmp in simd_cmp! when possible

Avoid using select in bool_to_zero_or_max_uint

It legalizes to a branch

Limit publicness to crate where possible and remove unused imports

Fix warnings

Update dependencies

Update Cranelift and object

Rustup to rustc 1.44.0-nightly (1edd389cc 2020-03-23)

Merge pull request #928 from bjorn3/dependabot/cargo/cranelift-codegen-c202a8e

Bump cranelift-codegen from `1c55eb1` to `c202a8e`

Bumps [cranelift-codegen](https://github.com/bytecodealliance/wasmtime) from `1c55eb1` to `c202a8e`.
- [Release notes](https://github.com/bytecodealliance/wasmtime/releases)
- [Commits](https://github.com/bytecodealliance/wasmtime/compare/1c55eb1a8bba9e59df604a0df2b6552dd54e76a7...c202a8eeaf8f72a5e87d50ac2f0d58c9170b3488)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

[ci] Remove Travis CI

This completes the switch to github actions

Fix some FIXME's and add some new FIXME's

Avoid u/i*::{min.max}_value()

They will be deprecated in the future

Add clif ir comments for stack2reg opt

Update dependencies

Update Cranelift

Fix it

Rustup to rustc 1.44.0-nightly (7ceebd98c 2020-03-17)

Simplify handling of unimplemented stuff

[debuginfo] Fix map_reg

Fix intrinsic name

[gh actions] Run the compile step with the same arguments as test.sh

Rename try intrinsic argument to match upstream

Rustup to rustc 1.43.0-nightly (dd6718796 2020-03-16)

Merge pull request #922 from bjorn3/dependabot/cargo/cranelift-codegen-e2f6c08

Bump cranelift-codegen from `fbe29da` to `e2f6c08`

Bumps [cranelift-codegen](https://github.com/bytecodealliance/wasmtime) from `fbe29da` to `e2f6c08`.
- [Release notes](https://github.com/bytecodealliance/wasmtime/releases)
- [Commits](https://github.com/bytecodealliance/wasmtime/compare/fbe29da5cc1c0847af176f151f114a6a535534ff...e2f6c0805231daa0524d7c770d11ced6dfe961a2)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Remove unused import

Update links for the merge of the Cranelift and Wasmtime repos

Pre-allocate vec for rlib metadata reading

Reduces the time spent during the copy from ~9% to ~1% for helloworld

cc #878

[gh actions] Really fix caching this time

Use Vec instead of HashSet for ccx.todo

This reduces runtime of ConstantCx::finalize for the coercions rustc
bench by ~65%

cc #878

Don't lookup span position when the span hasn't changed

This improves performance of FunctionDebugContext::define by ~60%

Fixes #807

Use byte offsets instead of char offsets in debuginfo

cc #807

Dont single step into macros

Fixes #782

Error on allocation containing reference to TLS value

Fixes #868

Write dummy return value on unimplemented simd_{insert,extract}

Fixes #919

[gh actions] Invalidate cargo-registry cache

[gh actions] invalidate cargo-installed-crates cache

[gh actions] Really fix permission problems with caching

[gh actions] Cache cargo registry and index

[gh actions] Fix caching of ~/.cargo/bin

[gh actions] Cache target dir for specific rustc version

[gh actions] Fix caching of cargo installed crates

Setup github actions

Shrink vtable symbol names a bit

Hash trap message symbol nameThis saves ~7% of disk space

Rustup to rustc 1.43.0-nightly (c20d7eecb 2020-03-11)

Refactor driver/aot.rs

Fixes #917

Move aot code to driver/aot.rs

Move jit code to driver/jit.rs

Move driver.rs

Display crate name in the "codegen mono items" time message

Fix typo found by @lqd

[README] Threads are supported

Better use of env vars

Merge pull request #918 from bjorn3/incr_cache

Implement incremental caching of object files

Mention CG_CLIF_INCR_CACHE in the readme

Implement incremental caching of object files

Don't disable inline asm in hint::spin_loop

Merge pull request #916 from bjorn3/fn_once_for_box_without_alloca

Emulate `<Box<F> as FnOnce>::call_once` without `alloca`

Don't disable multithreading in libtest

Rustup to rustc 1.43.0-nightly (3dbade652 2020-03-09)

Emulate `<Box<F> as FnOnce>::call_once` without `alloca`

Fixes #884

cc #15

Support virtual calls with unsized self argument

Bump proc-macro2 from 1.0.8 to 1.0.9 (#908)

Bumps [proc-macro2](https://github.com/alexcrichton/proc-macro2) from 1.0.8 to 1.0.9.
- [Release notes](https://github.com/alexcrichton/proc-macro2/releases)
- [Commits](https://github.com/alexcrichton/proc-macro2/compare/1.0.8...1.0.9)

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Bump syn from 1.0.15 to 1.0.16 (#907)

Bumps [syn](https://github.com/dtolnay/syn) from 1.0.15 to 1.0.16.
- [Release notes](https://github.com/dtolnay/syn/releases)
- [Commits](https://github.com/dtolnay/syn/compare/1.0.15...1.0.16)

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Bump quote from 1.0.2 to 1.0.3 (#912)

Bumps [quote](https://github.com/dtolnay/quote) from 1.0.2 to 1.0.3.
- [Release notes](https://github.com/dtolnay/quote/releases)
- [Commits](https://github.com/dtolnay/quote/compare/1.0.2...1.0.3)

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Use multiple codegen units

Fixes #909

Merge pull request #913 from bjorn3/dependabot/cargo/cranelift-codegen-fbe29da

Bump cranelift-codegen from `4284491` to `fbe29da`

Bumps [cranelift-codegen](https://github.com/bytecodealliance/wasmtime) from `4284491` to `fbe29da`.
- [Release notes](https://github.com/bytecodealliance/wasmtime/releases)
- [Commits](https://github.com/bytecodealliance/wasmtime/compare/428449133943213f2edc58ec161efcbb23d0eebd...fbe29da5cc1c0847af176f151f114a6a535534ff)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Revert "Use multiple codegen units"

This reverts commit 03acf67a0e3a2780d2a1443f4e4596b69d9a2b09.

Fix Cranelift patch paths

Use multiple codegen units

Move emit_module call

Move time "codegen mono items" out of codegen_mono_items