[turbofan] initial framework for unittesting of register allocator

test/cctest/compiler/test-codegen-deopt.cc

 // Copyright 2014 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/v8.h"
 #include "test/cctest/cctest.h"
 
 #include "src/compiler/code-generator.h"
 #include "src/compiler/common-operator.h"
 #include "src/compiler/graph.h"
@@ skipping 47 matching lines @@
   virtual ~DeoptCodegenTester() { delete code; }
 
   void GenerateCodeFromSchedule(Schedule* schedule) {
     OFStream os(stdout);
     if (FLAG_trace_turbo) {
       os << *schedule;
     }
 
     // Initialize the codegen and generate code.
     Linkage* linkage = new (scope_->main_zone()) Linkage(info.zone(), &info);
+    InstructionBlocks* instruction_blocks =
+        InstructionSequence::InstructionBlocksFor(scope_->main_zone(),
+                                                  schedule);
     code = new v8::internal::compiler::InstructionSequence(scope_->main_zone(),
-                                                           schedule);
+                                                           instruction_blocks);
     SourcePositionTable source_positions(graph);
     InstructionSelector selector(scope_->main_zone(), graph, linkage, code,
                                  schedule, &source_positions);
     selector.SelectInstructions();
 
     if (FLAG_trace_turbo) {
       os << "----- Instruction sequence before register allocation -----\n"
          << *code;
     }
 
@@ skipping 229 matching lines @@
   Handle<Object> result;
   bool has_pending_exception =
       !Execution::Call(isolate, t.function,
                        isolate->factory()->undefined_value(), 0, NULL,
                        false).ToHandle(&result);
   CHECK(!has_pending_exception);
   CHECK(result->SameValue(Smi::FromInt(42)));
 }
 
 #endif