[wasm] asm.js - Parse and convert asm.js to wasm a function at a time.

src/wasm/wasm-module-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/signature.h"
 
 #include "src/handles.h"
 #include "src/v8.h"
 #include "src/zone/zone-containers.h"
 
@@ skipping 253 matching lines @@
   if (pos != signature_map_.end()) {
     return pos->second;
   } else {
     uint32_t index = static_cast<uint32_t>(signatures_.size());
     signature_map_[sig] = index;
     signatures_.push_back(sig);
     return index;
   }
 }
 
-void WasmModuleBuilder::AddIndirectFunction(uint32_t index) {
-  indirect_functions_.push_back(index);
+uint32_t WasmModuleBuilder::AllocateIndirectFunctions(uint32_t count) {
+  uint32_t ret = static_cast<uint32_t>(indirect_functions_.size());
+  indirect_functions_.resize(indirect_functions_.size() + count);
+  return ret;
+}
+
+void WasmModuleBuilder::SetIndirectFunction(uint32_t indirect,
+                                            uint32_t direct) {
+  indirect_functions_[indirect] = direct;
 }
 
 uint32_t WasmModuleBuilder::AddImport(const char* name, int name_length,
                                       FunctionSig* sig) {
   imports_.push_back({AddSignature(sig), name, name_length});
   return static_cast<uint32_t>(imports_.size() - 1);
 }
 
 void WasmModuleBuilder::MarkStartFunction(WasmFunctionBuilder* function) {
   start_function_index_ = function->func_index();
@@ skipping 247 matching lines @@
   // Emit the offset table per function.
   for (auto function : functions_) {
     function->WriteAsmWasmOffsetTable(buffer);
   }
   // Append a 0 to indicate that this is an encoded table.
   buffer.write_u8(0);
 }
 }  // namespace wasm
 }  // namespace internal
 }  // namespace v8