diff --git a/js/src/builtin/Array.js b/js/src/builtin/Array.js
index 6a9f7da230c..c595f20f847 100644
--- a/js/src/builtin/Array.js
+++ b/js/src/builtin/Array.js
@@ -774,7 +774,7 @@ function ArrayFrom(items, mapfn=undefined, thisArg=undefined) {
         // See <https://bugs.ecmascript.org/show_bug.cgi?id=2883>.
         while (true) {
             // Steps 6.g.i-iii.
-            var next = callFunction(iterator.next, iterator);
+            var next = iterator.next();
             if (!IsObject(next))
                 ThrowTypeError(JSMSG_NEXT_RETURNED_PRIMITIVE);
 
diff --git a/js/src/builtin/Intl.js b/js/src/builtin/Intl.js
index 501a5d98e86..07b636b3ecb 100644
--- a/js/src/builtin/Intl.js
+++ b/js/src/builtin/Intl.js
@@ -443,9 +443,9 @@ function CanonicalizeLanguageTag(locale) {
         while (i < subtags.length && subtags[i].length > 1)
             i++;
         var extension = callFunction(std_Array_join, callFunction(std_Array_slice, subtags, extensionStart, i), "-");
-        callFunction(std_Array_push, extensions, extension);
+        extensions.push(extension);
     }
-    callFunction(std_Array_sort, extensions);
+    extensions.sort();
 
     // Private use sequences are left as is. "x-private"
     var privateUse = "";
@@ -455,7 +455,7 @@ function CanonicalizeLanguageTag(locale) {
     // Put everything back together.
     var canonical = normal;
     if (extensions.length > 0)
-        canonical += "-" + callFunction(std_Array_join, extensions, "-");
+        canonical += "-" + extensions.join("-");
     if (privateUse.length > 0) {
         // Be careful of a Language-Tag that is entirely privateuse.
         if (canonical.length > 0)
@@ -578,14 +578,11 @@ function DefaultLocale() {
     // (perhaps via fallback).  Otherwise use the last-ditch locale.
     var candidate = DefaultLocaleIgnoringAvailableLocales();
     var locale;
-    if (BestAvailableLocaleIgnoringDefault(callFunction(collatorInternalProperties.availableLocales,
-                                                        collatorInternalProperties),
+    if (BestAvailableLocaleIgnoringDefault(collatorInternalProperties.availableLocales(),
                                            candidate) &&
-        BestAvailableLocaleIgnoringDefault(callFunction(numberFormatInternalProperties.availableLocales,
-                                                        numberFormatInternalProperties),
+        BestAvailableLocaleIgnoringDefault(numberFormatInternalProperties.availableLocales(),
                                            candidate) &&
-        BestAvailableLocaleIgnoringDefault(callFunction(dateTimeFormatInternalProperties.availableLocales,
-                                                        dateTimeFormalInternalProperties),
+        BestAvailableLocaleIgnoringDefault(dateTimeFormatInternalProperties.availableLocales(),
                                            candidate))
     {
         locale = candidate;
@@ -678,8 +675,8 @@ function CanonicalizeLocaleList(locales) {
             if (!IsStructurallyValidLanguageTag(tag))
                 ThrowRangeError(JSMSG_INVALID_LANGUAGE_TAG, tag);
             tag = CanonicalizeLanguageTag(tag);
-            if (callFunction(std_Array_indexOf, seen, tag) === -1)
-                callFunction(std_Array_push, seen, tag);
+            if (seen.indexOf(tag) === -1)
+                seen.push(tag);
         }
         k++;
     }
@@ -971,14 +968,14 @@ function LookupSupportedLocales(availableLocales, requestedLocales) {
         // Step 4.c-d.
         var availableLocale = BestAvailableLocale(availableLocales, noExtensionsLocale);
         if (availableLocale !== undefined)
-            callFunction(std_Array_push, subset, locale);
+            subset.push(locale);
 
         // Step 4.e.
         k++;
     }
 
     // Steps 5-6.
-    return callFunction(std_Array_slice, subset, 0);
+    return subset.slice(0);
 }
 
 
@@ -1320,7 +1317,7 @@ function resolveCollatorInternals(lazyCollatorData)
     var relevantExtensionKeys = Collator.relevantExtensionKeys;
 
     // Step 15.
-    var r = ResolveLocale(callFunction(Collator.availableLocales, Collator),
+    var r = ResolveLocale(Collator.availableLocales(),
                           lazyCollatorData.requestedLocales,
                           lazyCollatorData.opt,
                           relevantExtensionKeys,
@@ -1510,8 +1507,7 @@ function InitializeCollator(collator, locales, options) {
 function Intl_Collator_supportedLocalesOf(locales /*, options*/) {
     var options = arguments.length > 1 ? arguments[1] : undefined;
 
-    var availableLocales = callFunction(collatorInternalProperties.availableLocales,
-                                        collatorInternalProperties);
+    var availableLocales = collatorInternalProperties.availableLocales();
     var requestedLocales = CanonicalizeLocaleList(locales);
     return SupportedLocales(availableLocales, requestedLocales, options);
 }
@@ -1679,7 +1675,7 @@ function resolveNumberFormatInternals(lazyNumberFormatData) {
     var localeData = NumberFormat.localeData;
 
     // Step 11.
-    var r = ResolveLocale(callFunction(NumberFormat.availableLocales, NumberFormat),
+    var r = ResolveLocale(NumberFormat.availableLocales(),
                           lazyNumberFormatData.requestedLocales,
                           lazyNumberFormatData.opt,
                           NumberFormat.relevantExtensionKeys,
@@ -1963,8 +1959,7 @@ function CurrencyDigits(currency) {
 function Intl_NumberFormat_supportedLocalesOf(locales /*, options*/) {
     var options = arguments.length > 1 ? arguments[1] : undefined;
 
-    var availableLocales = callFunction(numberFormatInternalProperties.availableLocales,
-                                        numberFormatInternalProperties);
+    var availableLocales = numberFormatInternalProperties.availableLocales();
     var requestedLocales = CanonicalizeLocaleList(locales);
     return SupportedLocales(availableLocales, requestedLocales, options);
 }
@@ -2123,7 +2118,7 @@ function resolveDateTimeFormatInternals(lazyDateTimeFormatData) {
     var localeData = DateTimeFormat.localeData;
 
     // Step 10.
-    var r = ResolveLocale(callFunction(DateTimeFormat.availableLocales, DateTimeFormat),
+    var r = ResolveLocale(DateTimeFormat.availableLocales(),
                           lazyDateTimeFormatData.requestedLocales,
                           lazyDateTimeFormatData.localeOpt,
                           DateTimeFormat.relevantExtensionKeys,
@@ -2664,8 +2659,7 @@ function BestFitFormatMatcher(options, formats) {
 function Intl_DateTimeFormat_supportedLocalesOf(locales /*, options*/) {
     var options = arguments.length > 1 ? arguments[1] : undefined;
 
-    var availableLocales = callFunction(dateTimeFormatInternalProperties.availableLocales,
-                                        dateTimeFormatInternalProperties);
+    var availableLocales = dateTimeFormatInternalProperties.availableLocales();
     var requestedLocales = CanonicalizeLocaleList(locales);
     return SupportedLocales(availableLocales, requestedLocales, options);
 }
diff --git a/js/src/builtin/Iterator.js b/js/src/builtin/Iterator.js
index a56b7228aa2..5f78547cadd 100644
--- a/js/src/builtin/Iterator.js
+++ b/js/src/builtin/Iterator.js
@@ -11,7 +11,7 @@ var LegacyIteratorWrapperMap = new std_WeakMap();
 function LegacyIteratorNext(arg) {
     var iter = callFunction(std_WeakMap_get, LegacyIteratorWrapperMap, this);
     try {
-        return { value: callFunction(iter.next, iter, arg), done: false };
+        return { value: iter.next(arg), done: false };
     } catch (e) {
         if (e instanceof std_StopIteration)
             return { value: undefined, done: true };
@@ -22,7 +22,7 @@ function LegacyIteratorNext(arg) {
 function LegacyIteratorThrow(exn) {
     var iter = callFunction(std_WeakMap_get, LegacyIteratorWrapperMap, this);
     try {
-        return { value: callFunction(iter.throw, iter, exn), done: false };
+        return { value: iter.throw(exn), done: false };
     } catch (e) {
         if (e instanceof std_StopIteration)
             return { value: undefined, done: true };
diff --git a/js/src/builtin/Module.js b/js/src/builtin/Module.js
index 15b36626a17..2e82cfcdf27 100644
--- a/js/src/builtin/Module.js
+++ b/js/src/builtin/Module.js
@@ -43,8 +43,7 @@ function ModuleGetExportedNames(exportStarSet = [])
     for (let i = 0; i < starExportEntries.length; i++) {
         let e = starExportEntries[i];
         let requestedModule = HostResolveImportedModule(module, e.moduleRequest);
-        let starNames = callFunction(requestedModule.getExportedNames, requestedModule,
-                                     exportStarSet);
+        let starNames = requestedModule.getExportedNames(exportStarSet);
         for (let j = 0; j < starNames.length; j++) {
             let n = starNames[j];
             if (n !== "default" && !(n in exportedNames))
@@ -90,8 +89,9 @@ function ModuleResolveExport(exportName, resolveSet = [], exportStarSet = [])
         let e = indirectExportEntries[i];
         if (exportName === e.exportName) {
             let importedModule = HostResolveImportedModule(module, e.moduleRequest);
-            let indirectResolution = callFunction(importedModule.resolveExport, importedModule,
-                                                  e.importName, resolveSet, exportStarSet);
+            let indirectResolution = importedModule.resolveExport(e.importName,
+                                                                  resolveSet,
+                                                                  exportStarSet);
             if (indirectResolution !== null)
                 return indirectResolution;
         }
@@ -118,8 +118,7 @@ function ModuleResolveExport(exportName, resolveSet = [], exportStarSet = [])
     for (let i = 0; i < starExportEntries.length; i++) {
         let e = starExportEntries[i];
         let importedModule = HostResolveImportedModule(module, e.moduleRequest);
-        let resolution = callFunction(importedModule.resolveExport, importedModule,
-                                      exportName, resolveSet, exportStarSet);
+        let resolution = importedModule.resolveExport(exportName, resolveSet, exportStarSet);
         if (resolution === "ambiguous")
             return resolution;
 
@@ -147,11 +146,11 @@ function GetModuleNamespace(module)
 
     // Step 3
     if (typeof namespace === "undefined") {
-        let exportedNames = callFunction(module.getExportedNames, module);
+        let exportedNames = module.getExportedNames();
         let unambiguousNames = [];
         for (let i = 0; i < exportedNames.length; i++) {
             let name = exportedNames[i];
-            let resolution = callFunction(module.resolveExport, module, name);
+            let resolution = module.resolveExport(name);
             if (resolution === null)
                 ThrowSyntaxError(JSMSG_MISSING_NAMESPACE_EXPORT);
             if (resolution !== "ambiguous")
@@ -167,7 +166,7 @@ function GetModuleNamespace(module)
 // 9.4.6.13 ModuleNamespaceCreate(module, exports)
 function ModuleNamespaceCreate(module, exports)
 {
-    callFunction(std_Array_sort, exports);
+    exports.sort();
 
     let ns = NewModuleNamespace(module, exports);
 
@@ -175,7 +174,7 @@ function ModuleNamespaceCreate(module, exports)
     // access.
     for (let i = 0; i < exports.length; i++) {
         let name = exports[i];
-        let binding = callFunction(module.resolveExport, module, name);
+        let binding = module.resolveExport(name);
         assert(binding !== null && binding !== "ambiguous", "Failed to resolve binding");
         AddModuleNamespaceBinding(ns, name, binding.module, binding.bindingName);
     }
@@ -205,14 +204,14 @@ function ModuleDeclarationInstantiation()
     for (let i = 0; i < requestedModules.length; i++) {
         let required = requestedModules[i];
         let requiredModule = HostResolveImportedModule(module, required);
-        callFunction(requiredModule.declarationInstantiation, requiredModule);
+        requiredModule.declarationInstantiation();
     }
 
     // Step 9
     let indirectExportEntries = module.indirectExportEntries;
     for (let i = 0; i < indirectExportEntries.length; i++) {
         let e = indirectExportEntries[i];
-        let resolution = callFunction(module.resolveExport, module, e.exportName);
+        let resolution = module.resolveExport(e.exportName);
         if (resolution === null)
             ThrowSyntaxError(JSMSG_MISSING_INDIRECT_EXPORT);
         if (resolution === "ambiguous")
@@ -228,8 +227,7 @@ function ModuleDeclarationInstantiation()
             let namespace = GetModuleNamespace(importedModule);
             CreateNamespaceBinding(env, imp.localName, namespace);
         } else {
-            let resolution = callFunction(importedModule.resolveExport, importedModule,
-                                          imp.importName);
+            let resolution = importedModule.resolveExport(imp.importName);
             if (resolution === null)
                 ThrowSyntaxError(JSMSG_MISSING_IMPORT);
             if (resolution === "ambiguous")
@@ -263,7 +261,7 @@ function ModuleEvaluation()
     for (let i = 0; i < requestedModules.length; i++) {
         let required = requestedModules[i];
         let requiredModule = HostResolveImportedModule(module, required);
-        callFunction(requiredModule.evaluation, requiredModule);
+        requiredModule.evaluation();
     }
 
     return EvaluateModule(module);
diff --git a/js/src/builtin/Object.js b/js/src/builtin/Object.js
index 8610ff4029e..f4957ec46e9 100644
--- a/js/src/builtin/Object.js
+++ b/js/src/builtin/Object.js
@@ -57,7 +57,7 @@ function Object_toLocaleString() {
     var O = this;
 
     // Step 2.
-    return callFunction(O.toString, O);
+    return O.toString();
 }
 
 function ObjectDefineSetter(name, setter) {
diff --git a/js/src/builtin/String.js b/js/src/builtin/String.js
index 23a2e21af8f..e1dc06f07b2 100644
--- a/js/src/builtin/String.js
+++ b/js/src/builtin/String.js
@@ -296,12 +296,12 @@ function String_static_fromCodePoint(codePoints) {
         // Step 5f.
         // Inlined UTF-16 Encoding
         if (nextCP <= 0xFFFF) {
-            callFunction(std_Array_push, elements, nextCP);
+            elements.push(nextCP);
             continue;
         }
 
-        callFunction(std_Array_push, elements, (((nextCP - 0x10000) / 0x400) | 0) + 0xD800);
-        callFunction(std_Array_push, elements, (nextCP - 0x10000) % 0x400 + 0xDC00);
+        elements.push((((nextCP - 0x10000) / 0x400) | 0) + 0xD800);
+        elements.push((nextCP - 0x10000) % 0x400 + 0xDC00);
     }
 
     // Step 6.
diff --git a/js/src/builtin/TypedArray.js b/js/src/builtin/TypedArray.js
index 4b0f1969355..b49e3b0f826 100644
--- a/js/src/builtin/TypedArray.js
+++ b/js/src/builtin/TypedArray.js
@@ -216,7 +216,7 @@ function TypedArrayFilter(callbackfn, thisArg = undefined) {
         // Step 13.f.
         if (selected) {
             // Step 13.f.i.
-            callFunction(std_Array_push, kept, kValue);
+            kept.push(kValue);
             // Step 13.f.ii.
             captured++;
         }
@@ -1058,14 +1058,14 @@ function TypedArrayFrom(constructor, target, items, mapfn, thisArg) {
         // Steps 10.d-e.
         while (true) {
             // Steps 10.e.i-ii.
-            var next = callFunction(iterator.next, iterator);
+            var next = iterator.next();
             if (!IsObject(next))
                 ThrowTypeError(JSMSG_NEXT_RETURNED_PRIMITIVE);
 
             // Steps 10.e.iii-vi.
             if (next.done)
                 break;
-            callFunction(std_Array_push, values, next.value);
+            values.push(next.value);
         }
 
         // Step 10.f.
diff --git a/js/src/builtin/Utilities.js b/js/src/builtin/Utilities.js
index fc6d4ad9d65..6b22e6b9c2b 100644
--- a/js/src/builtin/Utilities.js
+++ b/js/src/builtin/Utilities.js
@@ -53,7 +53,16 @@ var std_Map_iterator_next = MapIteratorNext;
 function List() {
     this.length = 0;
 }
-MakeConstructible(List, {__proto__: null});
+
+{
+  let ListProto = std_Object_create(null);
+  ListProto.indexOf = std_Array_indexOf;
+  ListProto.join = std_Array_join;
+  ListProto.push = std_Array_push;
+  ListProto.slice = std_Array_slice;
+  ListProto.sort = std_Array_sort;
+  MakeConstructible(List, ListProto);
+}
 
 
 /********** Record specification type **********/
diff --git a/js/src/frontend/Parser.cpp b/js/src/frontend/Parser.cpp
index afa2e25be3d..7c05d3dfe1e 100644
--- a/js/src/frontend/Parser.cpp
+++ b/js/src/frontend/Parser.cpp
@@ -8629,11 +8629,6 @@ Parser<ParseHandler>::memberExpr(YieldHandling yieldHandling, TripledotHandling
                 return nextMember;
             }
 
-            if (options().selfHostingMode && handler.isPropertyAccess(lhs)) {
-                report(ParseError, false, null(), JSMSG_SELFHOSTED_METHOD_CALL);
-                return null();
-            }
-
             nextMember = tt == TOK_LP ? handler.newCall() : handler.newTaggedTemplate();
             if (!nextMember)
                 return null();
diff --git a/js/src/js.msg b/js/src/js.msg
index ee77b911cd0..988aed7e09e 100644
--- a/js/src/js.msg
+++ b/js/src/js.msg
@@ -314,7 +314,6 @@ MSG_DEF(JSMSG_RESERVED_ID,             1, JSEXN_SYNTAXERR, "{0} is a reserved id
 MSG_DEF(JSMSG_REST_WITH_DEFAULT,       0, JSEXN_SYNTAXERR, "rest parameter may not have a default")
 MSG_DEF(JSMSG_SELFHOSTED_TOP_LEVEL_LEXICAL, 1, JSEXN_SYNTAXERR, "self-hosted code cannot contain top-level {0} declarations")
 MSG_DEF(JSMSG_SELFHOSTED_UNBOUND_NAME, 0, JSEXN_TYPEERR, "self-hosted code may not contain unbound name lookups")
-MSG_DEF(JSMSG_SELFHOSTED_METHOD_CALL,  0, JSEXN_SYNTAXERR, "self-hosted code may not contain direct method calls")
 MSG_DEF(JSMSG_SEMI_AFTER_FOR_COND,     0, JSEXN_SYNTAXERR, "missing ; after for-loop condition")
 MSG_DEF(JSMSG_SEMI_AFTER_FOR_INIT,     0, JSEXN_SYNTAXERR, "missing ; after for-loop initializer")
 MSG_DEF(JSMSG_SEMI_BEFORE_STMNT,       0, JSEXN_SYNTAXERR, "missing ; before statement")
diff --git a/js/src/jsexn.cpp b/js/src/jsexn.cpp
index 43509f9706d..ee1e16b86e9 100644
--- a/js/src/jsexn.cpp
+++ b/js/src/jsexn.cpp
@@ -542,13 +542,6 @@ js::ErrorToException(JSContext* cx, const char* message, JSErrorReport* reportp,
     if (JSREPORT_IS_WARNING(reportp->flags))
         return false;
 
-    // Similarly, we cannot throw a proper object inside the self-hosting
-    // compartment, as we cannot construct the Error constructor without
-    // self-hosted code. Tell our caller to report immediately.
-    // Without self-hosted code, we cannot get started anyway.
-    if (cx->runtime()->isSelfHostingCompartment(cx->compartment()))
-        return false;
-
     // Find the exception index associated with this error.
     JSErrNum errorNumber = static_cast<JSErrNum>(reportp->errorNumber);
     if (!callback)
diff --git a/js/src/vm/Xdr.h b/js/src/vm/Xdr.h
index f2c767e200e..b94401665b9 100644
--- a/js/src/vm/Xdr.h
+++ b/js/src/vm/Xdr.h
@@ -29,11 +29,11 @@ namespace js {
  *
  *  https://developer.mozilla.org/en-US/docs/SpiderMonkey/Internals/Bytecode
  */
-static const uint32_t XDR_BYTECODE_VERSION_SUBTRAHEND = 320;
+static const uint32_t XDR_BYTECODE_VERSION_SUBTRAHEND = 319;
 static const uint32_t XDR_BYTECODE_VERSION =
     uint32_t(0xb973c0de - XDR_BYTECODE_VERSION_SUBTRAHEND);
 
-static_assert(JSErr_Limit == 421,
+static_assert(JSErr_Limit == 420,
               "GREETINGS, POTENTIAL SUBTRAHEND INCREMENTER! If you added or "
               "removed MSG_DEFs from js.msg, you should increment "
               "XDR_BYTECODE_VERSION_SUBTRAHEND and update this assertion's "