Make it explicit that we don't support Wasm m128 globals at this time

Author: Cellule

lib/WasmReader/WasmBinaryReader.cpp

@@ -1067,6 +1067,24 @@ void WasmBinaryReader::ReadGlobalSection()
     for (uint32 i = 0; i < numGlobals; ++i)
     {
         WasmTypes::WasmType type = ReadWasmType(len);
+        
+        if (!WasmTypes::IsLocalType(type))
+        {
+            ThrowDecodingError(_u("Invalid global type %u"), type);
+        }
+        switch (type)
+        {
+        case WasmTypes::I32: break; // Handled
+        case WasmTypes::I64: break; // Handled
+        case WasmTypes::F32: break; // Handled
+        case WasmTypes::F64: break; // Handled
+#ifdef ENABLE_WASM_SIMD
+        case WasmTypes::M128: ThrowDecodingError(_u("m128 globals not supported"));
+#endif
+        default:
+            WasmTypes::CompileAssertCases<WasmTypes::I32, WasmTypes::I64, WasmTypes::F32, WasmTypes::F64, WASM_M128_CHECK_TYPE>();
+        }
+        
         bool isMutable = ReadMutableValue();
         WasmNode globalNode = ReadInitExpr();
         GlobalReferenceTypes::Type refType = GlobalReferenceTypes::Const;