deps: patch V8 to 12.8.374.33

Refs: v8/v8@12.8.374.32...12.8.374.33
PR-URL: #54952
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com>

Author: nodejs-github-bot

deps/v8/include/v8-version.h

@@ -11,7 +11,7 @@
 #define V8_MAJOR_VERSION 12
 #define V8_MINOR_VERSION 8
 #define V8_BUILD_NUMBER 374
-#define V8_PATCH_LEVEL 32
+#define V8_PATCH_LEVEL 33
 
 // Use 1 for candidates and 0 otherwise.
 // (Boolean macro values are not supported by all preprocessors.)

deps/v8/src/deoptimizer/deoptimizer.cc

@@ -338,6 +338,21 @@ class ActivationsFinder : public ThreadVisitor {
   // for the trampoline to the deoptimizer call respective to each code, and use
   // it to replace the current pc on the stack.
   void VisitThread(Isolate* isolate, ThreadLocalTop* top) override {
+#if V8_ENABLE_WEBASSEMBLY
+    // Also visit the ancestors of the active stack for wasm stack switching.
+    // We don't need to visit suspended stacks at the moment, because 1) they
+    // only contain wasm frames and 2) wasm does not do lazy deopt. Revisit this
+    // if one of these assumptions changes.
+    Tagged<WasmContinuationObject> continuation;
+    if (top == isolate->thread_local_top()) {
+      Tagged<Object> maybe_continuation =
+          isolate->root(RootIndex::kActiveContinuation);
+      if (!IsUndefined(maybe_continuation)) {
+        continuation = Cast<WasmContinuationObject>(maybe_continuation);
+      }
+    }
+#endif
+
     for (StackFrameIterator it(isolate, top); !it.done(); it.Advance()) {
       if (it.frame()->is_optimized()) {
         Tagged<GcSafeCode> code = it.frame()->GcSafeLookupCode();
@@ -371,6 +386,19 @@ class ActivationsFinder : public ThreadVisitor {
           }
         }
       }
+
+#if V8_ENABLE_WEBASSEMBLY
+      // We reached the base of the wasm stack. Follow the chain of
+      // continuations to find the parent stack and reset the iterator.
+      if (it.frame()->type() == StackFrame::STACK_SWITCH) {
+        CHECK_EQ(top, isolate->thread_local_top());
+        DCHECK(!continuation.is_null());
+        continuation = Cast<WasmContinuationObject>(continuation->parent());
+        wasm::StackMemory* parent =
+            reinterpret_cast<wasm::StackMemory*>(continuation->stack());
+        it.Reset(top, parent);
+      }
+#endif
     }
   }