[turbofan] initial framework for unittesting of register allocator

test/unittests/compiler/instruction-selector-unittest.cc

Index: test/unittests/compiler/instruction-selector-unittest.cc
diff --git a/test/unittests/compiler/instruction-selector-unittest.cc b/test/unittests/compiler/instruction-selector-unittest.cc
index ba420f75ac87f332e77d1d8df1eabb2645bf3afe..57ce6908327f5c71d76f2a45fa2d381788ece7af 100644
--- a/test/unittests/compiler/instruction-selector-unittest.cc
+++ b/test/unittests/compiler/instruction-selector-unittest.cc
@@ -37,7 +37,9 @@ InstructionSelectorTest::Stream InstructionSelectorTest::StreamBuilder::Build(
   EXPECT_NE(0, graph()->NodeCount());
   int initial_node_count = graph()->NodeCount();
   Linkage linkage(test_->zone(), call_descriptor());
-  InstructionSequence sequence(test_->zone(), schedule);
+  InstructionBlocks* instruction_blocks =
+      InstructionSequence::InstructionBlocksFor(test_->zone(), schedule);
+  InstructionSequence sequence(test_->zone(), instruction_blocks);
   SourcePositionTable source_position_table(graph());
   InstructionSelector selector(test_->zone(), graph(), &linkage, &sequence,
                                schedule, &source_position_table, features);