Merge pull request #2718 from cfallin/new-backend

Switch default to new x86_64 backend.

crates/fuzzing/Cargo.toml

@@ -23,6 +23,3 @@ wasmi = "0.7.0"
 
 [dev-dependencies]
 wat = "1.0.37"
-
-[features]
-experimental_x64 = ["wasmtime/experimental_x64"]

crates/jit/Cargo.toml

@@ -48,9 +48,8 @@ vtune = ["wasmtime-profiling/vtune"]
 parallel-compilation = ["rayon"]
 all-arch = ["cranelift-codegen/all-arch"]
 
-# Try the experimental, work-in-progress new x86_64 backend. This is not stable
-# as of June 2020.
-experimental_x64 = ["cranelift-codegen/x64"]
+# Use the old x86 backend.
+old-x86-backend = ["cranelift-codegen/old-x86-backend"]
 
 [badges]
 maintenance = { status = "actively-developed" }

crates/wasmtime/Cargo.toml

@@ -70,8 +70,8 @@ parallel-compilation = ["wasmtime-jit/parallel-compilation"]
 # Enables support for automatic cache configuration to be enabled in `Config`.
 cache = ["wasmtime-cache"]
 
-# Enables support for new x64 backend.
-experimental_x64 = ["wasmtime-jit/experimental_x64"]
+# Use the old x86 backend.
+old-x86-backend = ["wasmtime-jit/old-x86-backend"]
 
 # Enables support for "async stores" as well as defining host functions as
 # `async fn` and calling functions asynchronously.