[wasm] simd scalar lowering F32x4Add and I32x4Add

src/wasm/wasm-macro-gen.h

Index: src/wasm/wasm-macro-gen.h
diff --git a/src/wasm/wasm-macro-gen.h b/src/wasm/wasm-macro-gen.h
index abd57d505a11a51359f0b819229b7917a16efb06..1663a4e2f89a8e730cfb1155fb218960e18e825b 100644
--- a/src/wasm/wasm-macro-gen.h
+++ b/src/wasm/wasm-macro-gen.h
@@ -585,6 +585,11 @@ class LocalDeclEncoder {
 #define WASM_SIMD_I32x4_SPLAT(x) x, kSimdPrefix, kExprI32x4Splat & 0xff
 #define WASM_SIMD_I32x4_EXTRACT_LANE(x, y) \
   x, y, kSimdPrefix, kExprI32x4ExtractLane & 0xff
+#define WASM_SIMD_I32x4_ADD(x, y) x, y, kSimdPrefix, kExprI32x4Add & 0xff
+#define WASM_SIMD_F32x4_SPLAT(x) x, kSimdPrefix, kExprF32x4Splat & 0xff
+#define WASM_SIMD_F32x4_EXTRACT_LANE(x, y) \
+  x, y, kSimdPrefix, kExprF32x4ExtractLane & 0xff
+#define WASM_SIMD_F32x4_ADD(x, y) x, y, kSimdPrefix, kExprF32x4Add & 0xff
 
 #define SIG_ENTRY_v_v kWasmFunctionTypeForm, 0, 0
 #define SIZEOF_SIG_ENTRY_v_v 3