Move cranelift dependencies to wasmtime-environ (#669)

Groups all CL data structures into single dependency to be used accross wasmtime project.

crates/interface-types/Cargo.toml

@@ -12,12 +12,12 @@ edition = "2018"
 
 [dependencies]
 anyhow = "1.0.19"
-cranelift-codegen = { version = "0.50.0", default-features = false }
 walrus = "0.13"
 wasmparser = { version = "0.44.0", default-features = false }
 wasm-webidl-bindings = "0.6"
 wasmtime = { path = '../api' }
 wasmtime-jit = { path = '../jit' }
+wasmtime-environ = { path = '../environ' }
 wasmtime-runtime = { path = '../runtime' }
 wasmtime-wasi = { path = '../wasi' }
 

crates/interface-types/src/lib.rs

@@ -8,10 +8,10 @@
 #![deny(missing_docs)]
 
 use anyhow::{bail, format_err, Result};
-use cranelift_codegen::ir;
 use std::convert::TryFrom;
 use std::str;
 use wasm_webidl_bindings::ast;
+use wasmtime_environ::ir;
 use wasmtime_jit::RuntimeValue;
 use wasmtime_runtime::{Export, InstanceHandle};