[wasm] Introduce the TrapIf and TrapUnless operators to generate trap code.

src/assembler.cc

Index: src/assembler.cc
diff --git a/src/assembler.cc b/src/assembler.cc
index b9b41e5110681d878f30fbd725fc192beee0d235..fe513ef71efb06227d6d8b629191be8483436ff7 100644
--- a/src/assembler.cc
+++ b/src/assembler.cc
@@ -1201,6 +1201,12 @@ ExternalReference ExternalReference::f64_mod_wrapper_function(
   return ExternalReference(Redirect(isolate, FUNCTION_ADDR(f64_mod_wrapper)));
 }
 
+ExternalReference ExternalReference::wasm_call_trap_callback_for_testing(
+    Isolate* isolate) {
+  return ExternalReference(
+      Redirect(isolate, FUNCTION_ADDR(wasm::call_trap_callback_for_testing)));
+}
+
 ExternalReference ExternalReference::log_enter_external_function(
     Isolate* isolate) {
   return ExternalReference(