Add pretty param and local info comments to clif

Improve debug messages in generated clif files

Rustup to rustc 1.33.0-nightly (e40548bc4 2018-12-21)

Rustup to rustc 1.33.0-nightly (09d6ab90e 2018-12-20)

Merge pull request #240 from bjorn3/dependabot/cargo/heck-0.3.1

Fix calling drop_in_place_real with empty drop glue

fixes #209

Bump heck from 0.3.0 to 0.3.1

Bumps [heck](https://github.com/withoutboats/heck) from 0.3.0 to 0.3.1.
- [Release notes](https://github.com/withoutboats/heck/releases)
- [Commits](https://github.com/withoutboats/heck/commits)

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

Merge pull request #239 from bjorn3/dependabot/cargo/cc-1.0.27

Bump cc from 1.0.26 to 1.0.27

Bump cc from 1.0.26 to 1.0.27

Bumps [cc](https://github.com/alexcrichton/cc-rs) from 1.0.26 to 1.0.27.
- [Release notes](https://github.com/alexcrichton/cc-rs/releases)
- [Commits](https://github.com/alexcrichton/cc-rs/compare/1.0.26...1.0.27)

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

Introduce CodegenCx

Update Cargo.lock

Merge pull request #238 from bjorn3/dependabot/cargo/cranelift-328642f

Bump cranelift from `05b6226` to `328642f`

Bumps [cranelift](https://github.com/CraneStation/cranelift) from `05b6226` to `328642f`.
- [Release notes](https://github.com/CraneStation/cranelift/releases)
- [Commits](https://github.com/CraneStation/cranelift/compare/05b62260ac5473914f7536f5393c5c629877aab1...328642ffb2c095c8046ec4f17af1f49fbd9cdc24)

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

Disable probestack

Stop using xargo for building the sysroot

It is currently broken. (see https://github.com/japaric/xargo/issues/227)

This makes it easier to for example patch whole crates away.

Rustup patches to rustc 1.33.0-nightly (96d1334e5 2018-12-14)

Rustup cg_ssa to rustc 1.32.0-nightly (f4a421ee3 2018-12-13)

Put allocator shim in a different object file

Move emit_module a bit up

Convenience functions for creating and emitting faerie modules

Prepare for emitting separate object files for each codegen unit

Merge pull request #225 from bjorn3/dependabot/cargo/cc-1.0.26

Bump cc from 1.0.25 to 1.0.26

Bumps [cc](https://github.com/alexcrichton/cc-rs) from 1.0.25 to 1.0.26.
- [Release notes](https://github.com/alexcrichton/cc-rs/releases)
- [Commits](https://github.com/alexcrichton/cc-rs/compare/1.0.25...1.0.26)

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

Merge pull request #226 from bjorn3/dependabot/cargo/backtrace-0.3.12

Bump backtrace from 0.3.11 to 0.3.12

Bumps [backtrace](https://github.com/alexcrichton/backtrace-rs) from 0.3.11 to 0.3.12.
- [Release notes](https://github.com/alexcrichton/backtrace-rs/releases)
- [Commits](https://github.com/alexcrichton/backtrace-rs/compare/0.3.11...0.3.12)

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

Some refactorings for codegen_mono_items

Extract TargetIsa building to a separate function

Update Cargo.lock

Merge pull request #218 from bjorn3/dependabot/cargo/cranelift-05b6226

Bump cranelift from `9d17fc9` to `05b6226`

Bumps [cranelift](https://github.com/CraneStation/cranelift) from `9d17fc9` to `05b6226`.
- [Release notes](https://github.com/CraneStation/cranelift/releases)
- [Commits](https://github.com/CraneStation/cranelift/compare/9d17fc9ac1bd378c8d62eef491431708f43efdf5...05b62260ac5473914f7536f5393c5c629877aab1)

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

Change the CallConv for "rust" abi functions to "SystemV" to match the "C" abi

The allocator machinery seems to mix "rust" and "C" abi function defs and calls.

Merge pull request #215 from bjorn3/dependabot/cargo/libc-0.2.45

Bump libc from 0.2.44 to 0.2.45

Bumps [libc](https://github.com/rust-lang/libc) from 0.2.44 to 0.2.45.
- [Release notes](https://github.com/rust-lang/libc/releases)
- [Commits](https://github.com/rust-lang/libc/compare/0.2.44...0.2.45)

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

Merge pull request #214 from bjorn3/dependabot/cargo/structopt-0.2.14

Bump structopt from 0.2.13 to 0.2.14

Bumps [structopt](https://github.com/TeXitoi/structopt) from 0.2.13 to 0.2.14.
- [Release notes](https://github.com/TeXitoi/structopt/releases)
- [Changelog](https://github.com/TeXitoi/structopt/blob/master/CHANGELOG.md)
- [Commits](https://github.com/TeXitoi/structopt/compare/v0.2.13...v0.2.14)

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

Merge pull request #213 from bjorn3/dependabot/cargo/cranelift-9d17fc9

Bump cranelift from `5fc828a` to `9d17fc9`

Bumps [cranelift](https://github.com/CraneStation/cranelift) from `5fc828a` to `9d17fc9`.
- [Release notes](https://github.com/CraneStation/cranelift/releases)
- [Commits](https://github.com/CraneStation/cranelift/compare/5fc828ab9b513006f9322ba03645eb5ac4da97ed...9d17fc9ac1bd378c8d62eef491431708f43efdf5)

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

Support dylibs

Merge pull request #208 from bjorn3/dependabot/cargo/serde-1.0.81

Bump serde from 1.0.80 to 1.0.81

Bumps [serde](https://github.com/serde-rs/serde) from 1.0.80 to 1.0.81.
- [Release notes](https://github.com/serde-rs/serde/releases)
- [Commits](https://github.com/serde-rs/serde/compare/v1.0.80...v1.0.81)

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

Rustup to rustc 1.32.0-nightly (4a45578bc 2018-12-07)

Merge pull request #206 from bjorn3/dependabot/cargo/cranelift-5fc828a

Bump cranelift from `077f0e4` to `5fc828a`

Bumps [cranelift](https://github.com/CraneStation/cranelift) from `077f0e4` to `5fc828a`.
- [Release notes](https://github.com/CraneStation/cranelift/releases)
- [Commits](https://github.com/CraneStation/cranelift/compare/077f0e4794ea115341fce052713a6fc61ed7a474...5fc828ab9b513006f9322ba03645eb5ac4da97ed)

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

Update Cargo.lock

Restructure scripts and add flamegraph generator

Rustup to rustc 1.32.0-nightly (21f268495 2018-12-02)

Some small changes

Implement cast C enum -> int

Update Cargo.lock

Rustup to rustc 1.32.0-nightly (3e90a12a8 2018-11-29)

Update SIMD entry in Readme

Merge pull request #181 from bjorn3/dependabot/cargo/syn-0.15.22

Bump syn from 0.15.21 to 0.15.22

Bumps [syn](https://github.com/dtolnay/syn) from 0.15.21 to 0.15.22.
- [Release notes](https://github.com/dtolnay/syn/releases)
- [Commits](https://github.com/dtolnay/syn/compare/0.15.21...0.15.22)

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

Merge pull request #177 from bjorn3/dependabot/cargo/cranelift-1f34401

Bump cranelift from `fc608d4` to `1f34401`

Bump cranelift from `fc608d4` to `1f34401`

Bumps [cranelift](https://github.com/CraneStation/cranelift) from `fc608d4` to `1f34401`.
- [Release notes](https://github.com/CraneStation/cranelift/releases)
- [Commits](https://github.com/CraneStation/cranelift/compare/fc608d4b25cd7f8415274c3c9a9324c40e702ed4...1f3440174a8c69bd9428f6ad363bcb09f85b257d)

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

Rustup to rustc 1.32.0-nightly (6acbb5b65 2018-11-25)

Rustfmt

Update Cranelift, libc and redox_syscall

Implement BackendTypes for FunctionCx

Use rustc_codegen_ssa::CodegenResults

Better use of CodegenResults::modules

Rustup to rustc 1.32.0-nightly (1f57e4841 2018-11-23)

Fix some 2018 edition idioms

Remove a workaround for icmp.i8/i16 not having an encoding

Some changes to Readme.md

`rustup override set nightly` is not needed, because there is a `rust-toolchain` file.

cc #165

Fix fn(&T) -> for<'l> fn(&'l T) write

Update libstd patches for latest nightly and macOS

Fix static linkage

Move unimpl! macro to unimpl.rs

Implement rotate_{left,right} intrinsics

Benchmark compilations speed

cc #133

Set cranelift opt_level based on -Copt-level

Update Cargo.lock

Move trapping to trap_code.rs

Merge pull request #156 from bjorn3/dependabot/cargo/cranelift-af045c1

Bump cranelift from `606eee5` to `af045c1`

Bump cranelift from `606eee5` to `af045c1`

Bumps [cranelift](https://github.com/CraneStation/cranelift) from `606eee5` to `af045c1`.
- [Release notes](https://github.com/CraneStation/cranelift/releases)
- [Commits](https://github.com/CraneStation/cranelift/compare/606eee5a6c4835b7cbbf5d8f05b83d62331fa61e...af045c1c1705919285877173b0fdca54db29f54d)

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

Rustup to rustc 1.32.0-nightly (6b9b97bd9 2018-11-15)

Update Readme.md for the current state and add some links to tracking issues

Replace some variadic function calls in libstd with unimplemented!()

Merge pull request #154 from bjorn3/dependabot/cargo/cranelift-606eee5

Bump cranelift from `fe081d3` to `606eee5`

Update for cranelift change

Bump cranelift from `fe081d3` to `606eee5`

Bumps [cranelift](https://github.com/CraneStation/cranelift) from `fe081d3` to `606eee5`.
- [Release notes](https://github.com/CraneStation/cranelift/releases)
- [Commits](https://github.com/CraneStation/cranelift/compare/fe081d3a4710e4f1393ecad17fcb988f01ac5ef0...606eee5a6c4835b7cbbf5d8f05b83d62331fa61e)

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

Merge pull request #148 from bjorn3/dependabot/cargo/cranelift-fe081d3

Bump cranelift from `28fb8e1` to `fe081d3`

Bump cranelift from `28fb8e1` to `fe081d3`

Bumps [cranelift](https://github.com/CraneStation/cranelift) from `28fb8e1` to `fe081d3`.
- [Release notes](https://github.com/CraneStation/cranelift/releases)
- [Commits](https://github.com/CraneStation/cranelift/compare/28fb8e14011c3d79fb10d88bf1ea363136bdc9af...fe081d3a4710e4f1393ecad17fcb988f01ac5ef0)

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

Fix allocator shim abi

Merge pull request #151 from bjorn3/dependabot/cargo/ar-0.6.1

Bump ar from 0.6.0 to 0.6.1

Bump ar from 0.6.0 to 0.6.1

Bumps [ar](https://github.com/mdsteele/rust-ar) from 0.6.0 to 0.6.1.
- [Release notes](https://github.com/mdsteele/rust-ar/releases)
- [Commits](https://github.com/mdsteele/rust-ar/compare/v0.6.0...v0.6.1)

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

Rustup to rustc 1.32.0-nightly (9fefb6766 2018-11-13)

Implement raw ptr -> int of native pointer size cast

Implement intrinsic "exact_div"

Implement some missing CastKind::Misc casts

Implement ProjectionElem::ConstantIndex

Rustup to rustc 1.32.0-nightly (65204a97d 2018-11-12)

Change some unimplemented! to unimpl!

Merge remote-tracking branch 'sunfishcode/master'

Rustup to rustc 1.32.0-nightly (ca79ecd69 2018-11-11)

I had to put the original source of liballoc_system in tree, because it got removed from rustc

Change "cton" to "clif".

Change "cretonne" to "cranelift".

Merge pull request #144 from bjorn3/wip_linker

Linker

Remove commented out code