Move all trampoline compilation to wasmtime-cranelift (#3176)

* Move all trampoline compilation to `wasmtime-cranelift`

This commit moves compilation of all the trampolines used in wasmtime
behind the `Compiler` trait object to live in `wasmtime-cranelift`. The
long-term goal of this is to enable depending on cranelift *only* from
the `wasmtime-cranelift` crate, so by moving these dependencies we
should make that a little more flexible.

* Fix windows build

Author: alexcrichton

Cargo.lock

@@ -21,7 +21,6 @@ path = "src/bin/wasmtime.rs"
 doc = false
 
 [dependencies]
-# Enable all supported architectures by default.
 wasmtime = { path = "crates/wasmtime", version = "0.29.0", default-features = false, features = ['cache'] }
 wasmtime-cache = { path = "crates/cache", version = "0.29.0" }
 wasmtime-debug = { path = "crates/debug", version = "0.29.0" }
@@ -45,6 +44,7 @@ rayon = "1.5.0"
 humantime = "2.0.0"
 wasmparser = "0.80.0"
 lazy_static = "1.4.0"
+cranelift-native = { path = 'cranelift/native', version = '0.76.0' }
 
 [dev-dependencies]
 env_logger = "0.8.1"

Cargo.toml

@@ -35,6 +35,12 @@ impl FuncTranslator {
         }
     }
 
+    /// Returns the underlying `FunctionBuilderContext` that this translator
+    /// uses.
+    pub fn context(&mut self) -> &mut FunctionBuilderContext {
+        &mut self.func_ctx
+    }
+
     /// Translate a binary WebAssembly function.
     ///
     /// The `code` slice contains the binary WebAssembly *function code* as it appears in the code

cranelift/wasm/src/func_translator.rs

@@ -18,3 +18,7 @@ cranelift-frontend = { path = "../../cranelift/frontend", version = "0.76.0" }
 cranelift-entity = { path = "../../cranelift/entity", version = "0.76.0" }
 wasmparser = "0.80.0"
 target-lexicon = "0.12"
+
+[features]
+all-arch = ["cranelift-codegen/all-arch"]
+old-x86-backend = ["cranelift-codegen/old-x86-backend"]

crates/cranelift/Cargo.toml

@@ -1277,7 +1277,7 @@ impl<'module_environment> cranelift_wasm::FuncEnvironment for FuncEnvironment<'m
         index: TypeIndex,
     ) -> WasmResult<ir::SigRef> {
         let index = self.module.types[index].unwrap_function();
-        let sig = crate::indirect_signature(self.isa, self.types, index);
+        let sig = crate::indirect_signature(self.isa, &self.types.wasm_signatures[index]);
         Ok(func.import_signature(sig))
     }