moved crates in lib/ to src/, renamed crates, modified some files' text (#660)

moved crates in lib/ to src/, renamed crates, modified some files' text (#660)

cranelift/wasm/tests/wasm_testsuite.rs

@@ -0,0 +1,85 @@
+use cranelift_codegen::isa;
+use cranelift_codegen::print_errors::pretty_verifier_error;
+use cranelift_codegen::settings::{self, Flags};
+use cranelift_codegen::verifier;
+use cranelift_wasm::{translate_module, DummyEnvironment, ReturnMode};
+use std::fs;
+use std::fs::File;
+use std::io;
+use std::io::prelude::*;
+use std::path::Path;
+use std::str::FromStr;
+use target_lexicon::triple;
+use wabt::wat2wasm;
+
+#[test]
+fn testsuite() {
+    let mut paths: Vec<_> = fs::read_dir("../wasmtests")
+        .unwrap()
+        .map(|r| r.unwrap())
+        .filter(|p| {
+            // Ignore files starting with `.`, which could be editor temporary files
+            if let Some(stem) = p.path().file_stem() {
+                if let Some(stemstr) = stem.to_str() {
+                    return !stemstr.starts_with('.');
+                }
+            }
+            false
+        })
+        .collect();
+    paths.sort_by_key(|dir| dir.path());
+    let flags = Flags::new(settings::builder());
+    for path in paths {
+        let path = path.path();
+        handle_module(&path, &flags, ReturnMode::NormalReturns);
+    }
+}
+
+#[test]
+fn use_fallthrough_return() {
+    let flags = Flags::new(settings::builder());
+    handle_module(
+        Path::new("../wasmtests/use_fallthrough_return.wat"),
+        &flags,
+        ReturnMode::FallthroughReturn,
+    );
+}
+
+fn read_file(path: &Path) -> io::Result<Vec<u8>> {
+    let mut buf: Vec<u8> = Vec::new();
+    let mut file = File::open(path)?;
+    file.read_to_end(&mut buf)?;
+    Ok(buf)
+}
+
+fn handle_module(path: &Path, flags: &Flags, return_mode: ReturnMode) {
+    let data = match path.extension() {
+        None => {
+            panic!("the file extension is not wasm or wat");
+        }
+        Some(ext) => match ext.to_str() {
+            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) {
+                    Ok(wasm) => wasm,
+                    Err(e) => {
+                        panic!("error converting wat to wasm: {:?}", e);
+                    }
+                }
+            }
+            None | Some(&_) => panic!("the file extension for {:?} is not wasm or wat", path),
+        },
+    };
+    let triple = triple!("riscv64");
+    let isa = isa::lookup(triple).unwrap().finish(flags.clone());
+    let mut dummy_environ = DummyEnvironment::new(isa.frontend_config(), return_mode);
+
+    translate_module(&data, &mut dummy_environ).unwrap();
+
+    for func in dummy_environ.info.function_bodies.values() {
+        verifier::verify_function(func, &*isa)
+            .map_err(|errors| panic!(pretty_verifier_error(func, Some(&*isa), None, errors)))
+            .unwrap();
+    }
+}