[csa] Omit LoadNativeContext in some Torque javascript builtins

Instead, use Is<NativeContext> then UnsafeCast.

Bug: v8:9679
Change-Id: Id87a10fa66ff1c1e0ca0099b1938c72da2437832
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2631554
Commit-Queue: Z Nguyen-Huu <duongn@microsoft.com>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72175}

src/builtins/promise-constructor.tq

@@ -101,7 +101,10 @@ PromisePrototypeCatch(
     js-implicit context: Context, receiver: JSAny)(onRejected: JSAny): JSAny {
   // 1. Let promise be the this value.
   // 2. Return ? Invoke(promise, "then", « undefined, onRejected »).
-  const nativeContext = LoadNativeContext(context);
+  // This builtin is attached to JSFunction created by the bootstrapper so
+  // `context` is the native context.
+  check(Is<NativeContext>(context));
+  const nativeContext = UnsafeCast<NativeContext>(context);
   return UnsafeCast<JSAny>(
       InvokeThen(nativeContext, receiver, Undefined, onRejected));
 }

src/builtins/promise-finally.tq

@@ -169,7 +169,10 @@ PromisePrototypeFinally(
       MessageTemplate::kCalledOnNonObject, 'Promise.prototype.finally');
 
   // 3. Let C be ? SpeciesConstructor(promise, %Promise%).
-  const nativeContext = LoadNativeContext(context);
+  // This builtin is attached to JSFunction created by the bootstrapper so
+  // `context` is the native context.
+  check(Is<NativeContext>(context));
+  const nativeContext = UnsafeCast<NativeContext>(context);
   const promiseFun = *NativeContextSlot(ContextSlot::PROMISE_FUNCTION_INDEX);
 
   let constructor: Constructor = UnsafeCast<Constructor>(promiseFun);

src/builtins/promise-race.tq

@@ -13,7 +13,10 @@ PromiseRace(
   const receiver = Cast<JSReceiver>(receiver)
       otherwise ThrowTypeError(MessageTemplate::kCalledOnNonObject, 'Promise.race');
 
-  const nativeContext = LoadNativeContext(context);
+  // This builtin is attached to JSFunction created by the bootstrapper so
+  // `context` is the native context.
+  check(Is<NativeContext>(context));
+  const nativeContext = UnsafeCast<NativeContext>(context);
 
   // Let promiseCapability be ? NewPromiseCapability(C).
   // Don't fire debugEvent so that forwarding the rejection through all does

tools/v8heapconst.py

@@ -472,27 +472,27 @@ KNOWN_OBJECTS = {
   ("old_space", 0x02ac5): "StringSplitCache",
   ("old_space", 0x02ecd): "RegExpMultipleCache",
   ("old_space", 0x032d5): "BuiltinsConstantsTable",
-  ("old_space", 0x036bd): "AsyncFunctionAwaitRejectSharedFun",
-  ("old_space", 0x036e1): "AsyncFunctionAwaitResolveSharedFun",
-  ("old_space", 0x03705): "AsyncGeneratorAwaitRejectSharedFun",
-  ("old_space", 0x03729): "AsyncGeneratorAwaitResolveSharedFun",
-  ("old_space", 0x0374d): "AsyncGeneratorYieldResolveSharedFun",
-  ("old_space", 0x03771): "AsyncGeneratorReturnResolveSharedFun",
-  ("old_space", 0x03795): "AsyncGeneratorReturnClosedRejectSharedFun",
-  ("old_space", 0x037b9): "AsyncGeneratorReturnClosedResolveSharedFun",
-  ("old_space", 0x037dd): "AsyncIteratorValueUnwrapSharedFun",
-  ("old_space", 0x03801): "PromiseAllResolveElementSharedFun",
-  ("old_space", 0x03825): "PromiseAllSettledResolveElementSharedFun",
-  ("old_space", 0x03849): "PromiseAllSettledRejectElementSharedFun",
-  ("old_space", 0x0386d): "PromiseAnyRejectElementSharedFun",
-  ("old_space", 0x03891): "PromiseCapabilityDefaultRejectSharedFun",
-  ("old_space", 0x038b5): "PromiseCapabilityDefaultResolveSharedFun",
-  ("old_space", 0x038d9): "PromiseCatchFinallySharedFun",
-  ("old_space", 0x038fd): "PromiseGetCapabilitiesExecutorSharedFun",
-  ("old_space", 0x03921): "PromiseThenFinallySharedFun",
-  ("old_space", 0x03945): "PromiseThrowerFinallySharedFun",
-  ("old_space", 0x03969): "PromiseValueThunkFinallySharedFun",
-  ("old_space", 0x0398d): "ProxyRevokeSharedFun",
+  ("old_space", 0x036c9): "AsyncFunctionAwaitRejectSharedFun",
+  ("old_space", 0x036ed): "AsyncFunctionAwaitResolveSharedFun",
+  ("old_space", 0x03711): "AsyncGeneratorAwaitRejectSharedFun",
+  ("old_space", 0x03735): "AsyncGeneratorAwaitResolveSharedFun",
+  ("old_space", 0x03759): "AsyncGeneratorYieldResolveSharedFun",
+  ("old_space", 0x0377d): "AsyncGeneratorReturnResolveSharedFun",
+  ("old_space", 0x037a1): "AsyncGeneratorReturnClosedRejectSharedFun",
+  ("old_space", 0x037c5): "AsyncGeneratorReturnClosedResolveSharedFun",
+  ("old_space", 0x037e9): "AsyncIteratorValueUnwrapSharedFun",
+  ("old_space", 0x0380d): "PromiseAllResolveElementSharedFun",
+  ("old_space", 0x03831): "PromiseAllSettledResolveElementSharedFun",
+  ("old_space", 0x03855): "PromiseAllSettledRejectElementSharedFun",
+  ("old_space", 0x03879): "PromiseAnyRejectElementSharedFun",
+  ("old_space", 0x0389d): "PromiseCapabilityDefaultRejectSharedFun",
+  ("old_space", 0x038c1): "PromiseCapabilityDefaultResolveSharedFun",
+  ("old_space", 0x038e5): "PromiseCatchFinallySharedFun",
+  ("old_space", 0x03909): "PromiseGetCapabilitiesExecutorSharedFun",
+  ("old_space", 0x0392d): "PromiseThenFinallySharedFun",
+  ("old_space", 0x03951): "PromiseThrowerFinallySharedFun",
+  ("old_space", 0x03975): "PromiseValueThunkFinallySharedFun",
+  ("old_space", 0x03999): "ProxyRevokeSharedFun",
 }
 
 # Lower 32 bits of first page addresses for various heap spaces.