Enable running mode control for runtime and module instance (#1923)

Enable setting running mode when executing a wasm bytecode file
- Four running modes are supported: interpreter, fast-jit, llvm-jit and multi-tier-jit
- Add APIs to set/get the default running mode of the runtime
- Add APIs to set/get the running mode of a wasm module instance
- Add running mode options for iwasm command line tool

And add size/opt level options for LLVM JIT

core/iwasm/common/wasm_runtime_common.h

@@ -25,6 +25,9 @@
 extern "C" {
 #endif
 
+/* Internal use for setting default running mode */
+#define Mode_Default 0
+
 #if WASM_CPU_SUPPORTS_UNALIGNED_ADDR_ACCESS != 0
 
 #define PUT_I64_TO_ADDR(addr, value)       \
@@ -413,6 +416,13 @@ typedef struct wasm_frame_t {
     const char *func_name_wp;
 } WASMCApiFrame;
 
+#ifdef WASM_ENABLE_JIT
+typedef struct LLVMJITOptions {
+    uint32 opt_level;
+    uint32 size_level;
+} LLVMJITOptions;
+#endif
+
 #ifdef OS_ENABLE_HW_BOUND_CHECK
 /* Signal info passing to interp/aot signal handler */
 typedef struct WASMSignalInfo {
@@ -437,10 +447,28 @@ wasm_runtime_get_exec_env_tls(void);
 WASM_RUNTIME_API_EXTERN bool
 wasm_runtime_init(void);
 
+/* Internal API */
+RunningMode
+wasm_runtime_get_default_running_mode(void);
+
+#if WASM_ENABLE_JIT != 0
+/* Internal API */
+LLVMJITOptions
+wasm_runtime_get_llvm_jit_options(void);
+#endif
+
 /* See wasm_export.h for description */
 WASM_RUNTIME_API_EXTERN bool
 wasm_runtime_full_init(RuntimeInitArgs *init_args);
 
+/* See wasm_export.h for description */
+WASM_RUNTIME_API_EXTERN bool
+wasm_runtime_is_running_mode_supported(RunningMode running_mode);
+
+/* See wasm_export.h for description */
+WASM_RUNTIME_API_EXTERN bool
+wasm_runtime_set_default_running_mode(RunningMode running_mode);
+
 /* See wasm_export.h for description */
 WASM_RUNTIME_API_EXTERN void
 wasm_runtime_destroy(void);
@@ -484,6 +512,15 @@ wasm_runtime_instantiate(WASMModuleCommon *module, uint32 stack_size,
                          uint32 heap_size, char *error_buf,
                          uint32 error_buf_size);
 
+/* See wasm_export.h for description */
+WASM_RUNTIME_API_EXTERN bool
+wasm_runtime_set_running_mode(wasm_module_inst_t module_inst,
+                              RunningMode running_mode);
+
+/* See wasm_export.h for description */
+WASM_RUNTIME_API_EXTERN RunningMode
+wasm_runtime_get_running_mode(wasm_module_inst_t module_inst);
+
 /* See wasm_export.h for description */
 WASM_RUNTIME_API_EXTERN void
 wasm_runtime_deinstantiate(WASMModuleInstanceCommon *module_inst);