Improved feature-generation to be compiler-based

lib/compiler-llvm/src/config.rs

@@ -7,6 +7,7 @@ use inkwell::OptimizationLevel;
 use itertools::Itertools;
 use std::sync::Arc;
 use target_lexicon::Architecture;
+use wasm_common::Features;
 use wasm_common::{FunctionType, LocalFunctionIndex};
 use wasmer_compiler::{Compiler, CompilerConfig, FunctionMiddlewareGenerator, Target, Triple};
 
@@ -189,6 +190,11 @@ impl CompilerConfig for LLVM {
         Box::new(LLVMCompiler::new(&self))
     }
 
+    /// Gets the default features for this compiler in the given target
+    fn default_features_for_target(&self, _target: &Target) -> Features {
+        Features::default()
+    }
+
     /// Pushes a middleware onto the back of the middleware chain.
     fn push_middleware(&mut self, middleware: Arc<dyn FunctionMiddlewareGenerator>) {
         self.middlewares.push(middleware);