[wasm] Introduce ExecuteWasmCompilation and FinalizeWasmCompilation in pipeline.cc

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 2941 matching lines @@
         module_env->module->GetName(function.name_offset, function.name_length);
     SNPrintF(buffer, "WASM_function_#%d:%.*s", function.func_index, name.length,
              name.name);
     func_name = buffer.start();
   }
   CompilationInfo info(func_name, isolate, jsgraph->graph()->zone(), flags);
   compiler::ZonePool::Scope pipeline_zone_scope(&zone_pool);
   Pipeline pipeline(&info);
   pipeline.InitializeWasmCompilation(pipeline_zone_scope.zone(), &zone_pool,
                                      jsgraph->graph());
-  Handle<Code> code = pipeline.ScheduleAndGenerateCode(descriptor);
-  pipeline.FinalizeWasmCompilation();
-  pipeline_zone_scope.Destroy();
+  Handle<Code> code;
+  if (pipeline.ExecuteWasmCompilation(descriptor)) {
+    code = pipeline.FinalizeWasmCompilation(descriptor);
+  } else {
+    code = Handle<Code>::null();
+  }
+
   if (debugging) {
     buffer.Dispose();
   }
   if (!code.is_null()) {
     RecordFunctionCompilation(Logger::FUNCTION_TAG, &info, "WASM_function",
                               function.func_index,
                               module_env->module->GetName(
                                   function.name_offset, function.name_length));
   }
 
   if (FLAG_trace_wasm_decode_time) {
     double compile_ms = compile_timer.Elapsed().InMillisecondsF();
     PrintF(
         "wasm-compile ok: %d bytes, %0.3f ms decode, %d nodes, %0.3f ms "
         "compile\n",
         static_cast<int>(function.code_end_offset - function.code_start_offset),
         decode_ms, static_cast<int>(jsgraph->graph()->NodeCount()), compile_ms);
   }
   // TODO(bradnelson): Improve histogram handling of size_t.
   isolate->counters()->wasm_compile_function_peak_memory_bytes()->AddSample(
       static_cast<int>(jsgraph->graph()->zone()->allocation_size()));
   graph_zone_scope.Destroy();
   return code;
 }
 
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8