Enable nontrapping-fptoint feature while invoking wasm-opt (#543)

See rust-lang/rust#137322

Signed-off-by: godvino <[email protected]>

Author: godvino

README.md

@@ -230,9 +230,9 @@ disable-erase-components = false
 
 # Enabling wasm-opt features
 #
-# Optional. By default, "-Oz" and "--enable-bulk-memory" are used. For all features, consult `wasm-opt --help`.
+# Optional. By default, "-Oz", "--enable-bulk-memory" and "--enable-nontrapping-float-to-int"  are used. For all features, consult `wasm-opt --help`.
 # By providing features, you will override the default enabled features.
-wasm-opt-features = ["-Oz","--enable-bulk-memory"]
+wasm-opt-features = ["-Oz","--enable-bulk-memory","--enable-nontrapping-float-to-int"]
 ```
 
 ## Site parameters

src/compile/front.rs

@@ -225,7 +225,7 @@ async fn optimize(proj: &Project, file: &Utf8Path) -> Result<()> {
     let mut args: Vec<&str> = if let Some(features) = &proj.wasm_opt_features {
         features.iter().map(|f| f.as_str()).collect()
     } else {
-        vec!["-Oz", "--enable-bulk-memory"]
+        vec!["-Oz", "--enable-bulk-memory", "--enable-nontrapping-float-to-int"]
     };
     args.extend_from_slice(&[file.as_str(), "-o", file.as_str()]);