[ignition] desugar GetIterator() via bytecode rather than via AST

src/asmjs/asm-wasm-builder.cc

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/v8.h"
 
 // Required to get M_E etc. in MSVC.
 #if defined(_WIN32)
 #define _USE_MATH_DEFINES
 #endif
@@ skipping 255 matching lines @@
       }
     }
     RECURSE(Visit(expr));
     if (scope_ == kFuncScope) current_function_builder_->Emit(kExprDrop);
   }
 
   void VisitEmptyStatement(EmptyStatement* stmt) {}
 
   void VisitEmptyParentheses(EmptyParentheses* paren) { UNREACHABLE(); }
 
+  void VisitGetIterator(GetIterator* expr) { UNREACHABLE(); }
+
   void VisitIfStatement(IfStatement* stmt) {
     DCHECK_EQ(kFuncScope, scope_);
     RECURSE(Visit(stmt->condition()));
     current_function_builder_->EmitWithU8(kExprIf, kLocalVoid);
     // WASM ifs come with implement blocks for both arms.
     breakable_blocks_.push_back(std::make_pair(nullptr, false));
     if (stmt->HasThenStatement()) {
       RECURSE(Visit(stmt->then_statement()));
     }
     if (stmt->HasElseStatement()) {
@@ skipping 1675 matching lines @@
   impl.builder_->WriteAsmJsOffsetTable(*asm_offsets_buffer);
   return {module_buffer, asm_offsets_buffer, success};
 }
 
 const char* AsmWasmBuilder::foreign_init_name = "__foreign_init__";
 const char* AsmWasmBuilder::single_function_name = "__single_function__";
 
 }  // namespace wasm
 }  // namespace internal
 }  // namespace v8