[wasm] Int64Lowering of I64Div and I64Rem.

src/assembler.h

Index: src/assembler.h
diff --git a/src/assembler.h b/src/assembler.h
index 09da533baf2f4533cd55cb024d070d209614f305..84c3fdcc3fec77e4a18075a66938570cbddc1d78 100644
--- a/src/assembler.h
+++ b/src/assembler.h
@@ -930,6 +930,10 @@ class ExternalReference BASE_EMBEDDED {
   static ExternalReference wasm_float32_to_uint64(Isolate* isolate);
   static ExternalReference wasm_float64_to_int64(Isolate* isolate);
   static ExternalReference wasm_float64_to_uint64(Isolate* isolate);
+  static ExternalReference wasm_int64_div(Isolate* isolate);
+  static ExternalReference wasm_int64_mod(Isolate* isolate);
+  static ExternalReference wasm_uint64_div(Isolate* isolate);
+  static ExternalReference wasm_uint64_mod(Isolate* isolate);
 
   static ExternalReference f64_acos_wrapper_function(Isolate* isolate);
   static ExternalReference f64_asin_wrapper_function(Isolate* isolate);