[compiler] Ensure code unsupported by Crankshaft goes to Ignition.

src/full-codegen/full-codegen.cc

 // Copyright 2012 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/full-codegen/full-codegen.h"
 
 #include "src/ast/ast-numbering.h"
 #include "src/ast/ast.h"
 #include "src/ast/prettyprinter.h"
 #include "src/ast/scopes.h"
@@ skipping 66 matching lines @@
 
 // static
 bool FullCodeGenerator::MakeCode(CompilationInfo* info) {
   return MakeCode(info, info->isolate()->stack_guard()->real_climit());
 }
 
 // static
 bool FullCodeGenerator::MakeCode(CompilationInfo* info, uintptr_t stack_limit) {
   Isolate* isolate = info->isolate();
 
+  if (info->shared_info()->must_use_ignition_turbo()) return false;

[Michael Starzinger, 2016/11/22 14:53:50]

I assume turning this into a DCHECK doesn't work yet? Can we leave a TODO here
that this should eventually become a DCHECK?

[rmcilroy, 2016/11/22 17:24:02]

The issue was EnsureDeoptimizationSupport. I've moved the check to
EnsureDeoptimizationSupport and made this a DCHECK here.

+
   DCHECK(!FLAG_minimal);
   RuntimeCallTimerScope runtimeTimer(isolate,
                                      &RuntimeCallStats::CompileFullCode);
   TimerEventScope<TimerEventCompileFullCode> timer(info->isolate());
   TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("v8.compile"), "V8.CompileFullCode");
 
   Handle<Script> script = info->script();
   if (!script->IsUndefined(isolate) &&
       !script->source()->IsUndefined(isolate)) {
     int len = String::cast(script->source())->length();
@@ skipping 1897 matching lines @@
   return info_->has_simple_parameters();
 }
 
 FunctionLiteral* FullCodeGenerator::literal() const { return info_->literal(); }
 
 #undef __
 
 
 }  // namespace internal
 }  // namespace v8