Expose a lower bound of malloc'd memory via heap statistics

src/compiler/wasm-compiler.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/compiler/wasm-compiler.h"
 
 #include "src/isolate-inl.h"
 
 #include "src/base/platform/elapsed-timer.h"
 #include "src/base/platform/platform.h"
@@ skipping 2512 matching lines @@
   shared->set_length(params);
   shared->set_internal_formal_parameter_count(params);
   Handle<JSFunction> function = isolate->factory()->NewFunction(
       isolate->wasm_function_map(), name, MaybeHandle<Code>());
   function->SetInternalField(0, *module_object);
   function->set_shared(*shared);
 
   //----------------------------------------------------------------------------
   // Create the Graph
   //----------------------------------------------------------------------------
-  Zone zone;
+  Zone zone(isolate->allocator());
   Graph graph(&zone);
   CommonOperatorBuilder common(&zone);
   JSOperatorBuilder javascript(&zone);
   MachineOperatorBuilder machine(&zone);
   JSGraph jsgraph(isolate, &graph, &common, &javascript, nullptr, &machine);
 
   Node* control = nullptr;
   Node* effect = nullptr;
 
   WasmGraphBuilder builder(&zone, &jsgraph, func->sig);
@@ skipping 71 matching lines @@
 }
 
 Handle<Code> CompileWasmToJSWrapper(Isolate* isolate, wasm::ModuleEnv* module,
                                     Handle<JSFunction> function,
                                     wasm::FunctionSig* sig,
                                     wasm::WasmName module_name,
                                     wasm::WasmName function_name) {
   //----------------------------------------------------------------------------
   // Create the Graph
   //----------------------------------------------------------------------------
-  Zone zone;
+  Zone zone(isolate->allocator());
   Graph graph(&zone);
   CommonOperatorBuilder common(&zone);
   JSOperatorBuilder javascript(&zone);
   MachineOperatorBuilder machine(&zone);
   JSGraph jsgraph(isolate, &graph, &common, &javascript, nullptr, &machine);
 
   Node* control = nullptr;
   Node* effect = nullptr;
 
   WasmGraphBuilder builder(&zone, &jsgraph, sig);
@@ skipping 73 matching lines @@
     os << std::endl;
   }
 
   double decode_ms = 0;
   base::ElapsedTimer decode_timer;
   if (FLAG_trace_wasm_decode_time) {
     decode_timer.Start();
   }
 
   // Create a TF graph during decoding.
-  Zone zone;
+  Zone zone(isolate->allocator());
   Graph graph(&zone);
   CommonOperatorBuilder common(&zone);
   MachineOperatorBuilder machine(
       &zone, MachineType::PointerRepresentation(),
       InstructionSelector::SupportedMachineOperatorFlags());
   JSGraph jsgraph(isolate, &graph, &common, nullptr, nullptr, &machine);
   WasmGraphBuilder builder(&zone, &jsgraph, function.sig);
   wasm::FunctionBody body = {
       module_env, function.sig, module_env->module->module_start,
       module_env->module->module_start + function.code_start_offset,
       module_env->module->module_start + function.code_end_offset};
-  wasm::TreeResult result = wasm::BuildTFGraph(&builder, body);
+  wasm::TreeResult result =
+      wasm::BuildTFGraph(isolate->allocator(), &builder, body);
 
   if (result.failed()) {
     if (FLAG_trace_wasm_compiler) {
       OFStream os(stdout);
       os << "Compilation failed: " << result << std::endl;
     }
     // Add the function as another context for the exception
     ScopedVector<char> buffer(128);
     wasm::WasmName name =
         module_env->module->GetName(function.name_offset, function.name_length);
     SNPrintF(buffer, "Compiling WASM function #%d:%.*s failed:",
              function.func_index, name.length, name.name);
     thrower.Failed(buffer.start(), result);
     return Handle<Code>::null();
   }
 
   int index = static_cast<int>(function.func_index);
   if (index >= FLAG_trace_wasm_ast_start && index < FLAG_trace_wasm_ast_end) {
-    PrintAst(body);
+    PrintAst(isolate->allocator(), body);
   }
 
   if (FLAG_trace_wasm_decode_time) {
     decode_ms = decode_timer.Elapsed().InMillisecondsF();
   }
 
   base::ElapsedTimer compile_timer;
   if (FLAG_trace_wasm_decode_time) {
     compile_timer.Start();
   }
@@ skipping 43 matching lines @@
         static_cast<int>(function.code_end_offset - function.code_start_offset),
         decode_ms, static_cast<int>(graph.NodeCount()), compile_ms);
   }
   return code;
 }
 
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8