Verify that cranelift-wasm can translate SIMD instructions

To do so we must use a new version of wabt-rs that allows us to enable features (e.g. SIMD) when translating the wasmtests

cranelift/wasm/tests/wasm_testsuite.rs

@@ -10,7 +10,7 @@ use std::io::prelude::*;
 use std::path::Path;
 use std::str::FromStr;
 use target_lexicon::triple;
-use wabt::wat2wasm;
+use wabt::{wat2wasm_with_features, Features};
 
 #[test]
 fn testsuite() {
@@ -61,7 +61,9 @@ fn handle_module(path: &Path, flags: &Flags, return_mode: ReturnMode) {
             Some("wasm") => read_file(path).expect("error reading wasm file"),
             Some("wat") => {
                 let wat = read_file(path).expect("error reading wat file");
-                match wat2wasm(&wat) {
+                let mut features = Features::new();
+                features.enable_all();
+                match wat2wasm_with_features(&wat, features) {
                     Ok(wasm) => wasm,
                     Err(e) => {
                         panic!("error converting wat to wasm: {:?}", e);

cranelift/wasmtests/simd.wat

@@ -0,0 +1,23 @@
+(module
+  (func $test_splat (result i32)
+    i32.const 42
+    i32x4.splat
+    i32x4.extract_lane 0
+  )
+
+  (func $test_insert_lane (result i32)
+      v128.const i64x2 0 0
+      i32.const 99
+      i32x4.replace_lane 1
+      i32x4.extract_lane 1
+  )
+
+  (func $test_const (result i32)
+    v128.const i32x4 1 2 3 4
+    i32x4.extract_lane 3
+  )
+
+  (export "test_splat" (func $test_splat))
+  (export "test_insert_lane" (func $test_insert_lane))
+  (export "test_const" (func $test_const))
+)