Bug 1743357 - Part 3: Remove CompilationStencil::steal. r=nbp

Depends on D132356

Differential Revision: https://phabricator.services.mozilla.com/D132357

js/src/frontend/CompilationStencil.h

@@ -1148,9 +1148,6 @@ struct CompilationStencil {
     return mallocSizeOf(this) + sizeOfExcludingThis(mallocSizeOf);
   }
 
-  // Steal ExtensibleCompilationStencil content.
-  [[nodiscard]] bool steal(JSContext* cx, ExtensibleCompilationStencil&& other);
-
   bool isModule() const;
 
 #ifdef DEBUG

js/src/frontend/Stencil.cpp

@@ -2533,86 +2533,6 @@ void ExtensibleCompilationStencil::assertNoExternalDependency() const {
 }
 #endif  // DEBUG
 
-template <typename T, typename VectorT>
-bool CopyVectorToSpan(JSContext* cx, LifoAlloc& alloc, mozilla::Span<T>& span,
-                      VectorT& vec) {
-  auto len = vec.length();
-  if (len == 0) {
-    return true;
-  }
-
-  auto* p = alloc.newArrayUninitialized<T>(len);
-  if (!p) {
-    js::ReportOutOfMemory(cx);
-    return false;
-  }
-  span = mozilla::Span(p, len);
-  memcpy(span.data(), vec.begin(), sizeof(T) * len);
-  return true;
-}
-
-bool CompilationStencil::steal(JSContext* cx,
-                               ExtensibleCompilationStencil&& other) {
-#ifdef DEBUG
-  other.assertNoExternalDependency();
-#endif
-
-  canLazilyParse = other.canLazilyParse;
-  functionKey = other.functionKey;
-
-  MOZ_ASSERT(alloc.isEmpty());
-  alloc.steal(&other.alloc);
-
-  if (!CopyVectorToSpan(cx, alloc, scriptData, other.scriptData)) {
-    return false;
-  }
-
-  if (!CopyVectorToSpan(cx, alloc, scriptExtra, other.scriptExtra)) {
-    return false;
-  }
-
-  if (!CopyVectorToSpan(cx, alloc, gcThingData, other.gcThingData)) {
-    return false;
-  }
-
-  if (!CopyVectorToSpan(cx, alloc, scopeData, other.scopeData)) {
-    return false;
-  }
-
-  if (!CopyVectorToSpan(cx, alloc, scopeNames, other.scopeNames)) {
-    return false;
-  }
-
-  if (!CopyVectorToSpan(cx, alloc, regExpData, other.regExpData)) {
-    return false;
-  }
-
-  if (!CopyVectorToSpan(cx, alloc, bigIntData, other.bigIntData)) {
-    return false;
-  }
-
-  if (!CopyVectorToSpan(cx, alloc, objLiteralData, other.objLiteralData)) {
-    return false;
-  }
-
-  if (!CopyVectorToSpan(cx, alloc, parserAtomData,
-                        other.parserAtoms.entries())) {
-    return false;
-  }
-
-  sharedData = std::move(other.sharedData);
-
-  moduleMetadata = std::move(other.moduleMetadata);
-
-  asmJS = std::move(other.asmJS);
-
-#ifdef DEBUG
-  assertNoExternalDependency();
-#endif
-
-  return true;
-}
-
 template <typename T, typename VectorT>
 [[nodiscard]] bool CopySpanToVector(JSContext* cx, VectorT& vec,
                                     mozilla::Span<T>& span) {