Added Relaxed SIMD (#256)

* Added config options for relaxed SIMD

* Update src/Config.cs

Co-authored-by: Peter Huene <[email protected]>

---------

Co-authored-by: Peter Huene <[email protected]>

Author: martindevans

src/Config.cs

@@ -156,6 +156,19 @@ public Config WithSIMD(bool enable)
             return this;
         }
 
+        /// <summary>
+        /// Sets whether or not to enable WebAssembly Relaxed SIMD support. New SIMD instructions that may be non-deterministic across different hosts unless deterministic mode is enabled.
+        /// </summary>
+        /// <param name="enable">True to enable WebAssembly Relaxed SIMD support or false to disable.</param>
+        /// <param name="deterministic">True to enable deterministic mode for WebAssembly Relaxed SIMD or false to allow non-deterministic execution.</param>
+        /// <returns>Returns the current config.</returns>
+        public Config WithRelaxedSIMD(bool enable, bool deterministic)
+        {
+            Native.wasmtime_config_wasm_relaxed_simd_set(handle, enable);
+            Native.wasmtime_config_wasm_relaxed_simd_deterministic_set(handle, deterministic);
+            return this;
+        }
+
         /// <summary>
         /// Sets whether or not enable WebAssembly bulk memory support.
         /// </summary>
@@ -393,6 +406,12 @@ private static class Native
             [DllImport(Engine.LibraryName)]
             public static extern void wasmtime_config_wasm_simd_set(Handle config, [MarshalAs(UnmanagedType.I1)] bool enable);
 
+            [DllImport(Engine.LibraryName)]
+            public static extern void wasmtime_config_wasm_relaxed_simd_set(Handle config, [MarshalAs(UnmanagedType.I1)] bool enable);
+
+            [DllImport(Engine.LibraryName)]
+            public static extern void wasmtime_config_wasm_relaxed_simd_deterministic_set(Handle config, [MarshalAs(UnmanagedType.I1)] bool enable);
+
             [DllImport(Engine.LibraryName)]
             public static extern void wasmtime_config_wasm_bulk_memory_set(Handle config, [MarshalAs(UnmanagedType.I1)] bool enable);
 

tests/ConfigTests.cs

@@ -119,6 +119,16 @@ public void ItSetsSIMD()
             act.Should().Throw<WasmtimeException>();
         }
 
+        [Fact]
+        public void ItSetsRelaxedSIMD()
+        {
+            var config = new Config();
+            config.WithRelaxedSIMD(true, true);
+
+            using var engine = new Engine(config);
+            using var module = Module.FromTextFile(engine, Path.Combine("Modules", "RelaxedSIMD.wat"));
+        }
+
         [Fact]
         public void ItSetsBulkMemory()
         {

tests/Modules/RelaxedSIMD.wat

@@ -0,0 +1,9 @@
+(module
+  (func $madd_v128 (param v128) (result v128)
+	local.get 0
+	local.get 0
+	local.get 0
+	f32x4.relaxed_madd
+  )
+  (export "$madd_v128" (func $madd_v128))
+)