Add wasm reference/pointers translation. (#1073)

cranelift/src/clif-util.rs

@@ -119,6 +119,12 @@ fn add_enable_multi_value<'a>() -> clap::Arg<'a, 'a> {
         .help("Enable WASM's multi-value support")
 }
 
+fn add_enable_reference_types_flag<'a>() -> clap::Arg<'a, 'a> {
+    Arg::with_name("enable-reference-types")
+        .long("enable-reference-types")
+        .help("Enable WASM's reference types operations")
+}
+
 fn add_just_decode_flag<'a>() -> clap::Arg<'a, 'a> {
     Arg::with_name("just-decode")
         .short("t")
@@ -163,6 +169,7 @@ fn add_wasm_or_compile<'a>(cmd: &str) -> clap::App<'a, 'a> {
         .arg(add_debug_flag())
         .arg(add_enable_simd_flag())
         .arg(add_enable_multi_value())
+        .arg(add_enable_reference_types_flag())
         .arg(add_just_decode_flag())
         .arg(add_check_translation_flag())
 }
@@ -316,6 +323,7 @@ fn main() {
                     rest_cmd.is_present("value-ranges"),
                     rest_cmd.is_present("enable-simd"),
                     rest_cmd.is_present("enable-multi-value"),
+                    rest_cmd.is_present("enable-reference-types"),
                 )
             };
 

cranelift/src/wasm.rs

@@ -51,6 +51,7 @@ pub fn run(
     flag_calc_value_ranges: bool,
     flag_enable_simd: bool,
     flag_enable_multi_value: bool,
+    flag_enable_reference_types: bool,
 ) -> Result<(), String> {
     let parsed = parse_sets_and_triple(flag_set, flag_triple)?;
 
@@ -68,6 +69,7 @@ pub fn run(
             flag_calc_value_ranges,
             flag_enable_simd,
             flag_enable_multi_value,
+            flag_enable_reference_types,
             &path.to_path_buf(),
             &name,
             parsed.as_fisa(),
@@ -87,6 +89,7 @@ fn handle_module(
     flag_calc_value_ranges: bool,
     flag_enable_simd: bool,
     flag_enable_multi_value: bool,
+    flag_enable_reference_types: bool,
     path: &PathBuf,
     name: &str,
     fisa: FlagsOrIsa,
@@ -110,6 +113,9 @@ fn handle_module(
         if flag_enable_multi_value {
             features.enable_multi_value();
         }
+        if flag_enable_reference_types {
+            features.enable_reference_types();
+        }
 
         module_binary = match wat2wasm_with_features(&module_binary, features) {
             Ok(data) => data,