--- a/js/src/jit/IonAnalysis.cpp
+++ b/js/src/jit/IonAnalysis.cpp
@@ -2321,17 +2321,18 @@ static bool IsRegExpHoistableCall(Compil
   if (name == runtime->names().RegExpBuiltinExec ||
       name == runtime->names().UnwrapAndCallRegExpBuiltinExec ||
       name == runtime->names().RegExpMatcher ||
       name == runtime->names().RegExpTester ||
       name == runtime->names().RegExpSearcher) {
     return IsExclusiveFirstArg(call, def);
   }
 
-  if (name == runtime->names().RegExp_prototype_Exec) {
+  if (name == runtime->names().RegExp_prototype_Exec ||
+      name == runtime->names().CallRegExpMethodIfWrapped) {
     return IsExclusiveThisArg(call, def);
   }
 
   return false;
 }
 
 static bool CanCompareRegExp(MCompare* compare, MDefinition* def) {
   MDefinition* value;

--- a/js/src/vm/CommonPropertyNames.h
+++ b/js/src/vm/CommonPropertyNames.h
@@ -55,16 +55,18 @@
   MACRO(byteOffset, byteOffset, "byteOffset")                                  \
   MACRO(bytes, bytes, "bytes")                                                 \
   MACRO(BYTES_PER_ELEMENT, BYTES_PER_ELEMENT, "BYTES_PER_ELEMENT")             \
   MACRO(call, call, "call")                                                    \
   MACRO(callContentFunction, callContentFunction, "callContentFunction")       \
   MACRO(callee, callee, "callee")                                              \
   MACRO(caller, caller, "caller")                                              \
   MACRO(callFunction, callFunction, "callFunction")                            \
+  MACRO(CallRegExpMethodIfWrapped, CallRegExpMethodIfWrapped,                  \
+        "CallRegExpMethodIfWrapped")                                           \
   MACRO(cancel, cancel, "cancel")                                              \
   MACRO(case, case_, "case")                                                   \
   MACRO(caseFirst, caseFirst, "caseFirst")                                     \
   MACRO(catch, catch_, "catch")                                                \
   MACRO(class, class_, "class")                                                \
   MACRO(Collator, Collator, "Collator")                                        \
   MACRO(collections, collections, "collections")                               \
   MACRO(columnNumber, columnNumber, "columnNumber")                            \