Separate function decoding counter into asm and wasm counters.

src/wasm/module-decoder.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/wasm/module-decoder.h"
 #include "src/wasm/function-body-decoder-impl.h"
 
 #include "src/base/functional.h"
 #include "src/base/platform/platform.h"
 #include "src/counters.h"
@@ skipping 1178 matching lines @@
   Zone zone(&allocator, ZONE_NAME);
   ModuleDecoder decoder(&zone, start, end, kWasmOrigin);
   return decoder.DecodeInitExpr(start);
 }
 
 FunctionResult DecodeWasmFunction(Isolate* isolate, Zone* zone,
                                   ModuleBytesEnv* module_env,
                                   const byte* function_start,
                                   const byte* function_end) {
   HistogramTimerScope wasm_decode_function_time_scope(
-      isolate->counters()->wasm_decode_function_time());
+      module_env->module_env.is_wasm()
+          ? isolate->counters()->wasm_decode_wasm_function_time()
+          : isolate->counters()->wasm_decode_asm_function_time());
   size_t size = function_end - function_start;
   if (function_start > function_end) return FunctionError("start > end");
   if (size > kV8MaxWasmFunctionSize)
     return FunctionError("size > maximum function size");
   isolate->counters()->wasm_function_size_bytes()->AddSample(
       static_cast<int>(size));
   WasmFunction* function = new WasmFunction();
   ModuleDecoder decoder(zone, function_start, function_end, kWasmOrigin);
   return decoder.DecodeSingleFunction(module_env, function);
 }
@@ skipping 74 matching lines @@
     result.push_back({section_start, name_offset, name_length, payload_offset,
                       payload_length, section_length});
   }
 
   return result;
 }
 
 }  // namespace wasm
 }  // namespace internal
 }  // namespace v8