[turbofan] refactor pipeline to use hydrogen like Run calls

test/cctest/compiler/test-instruction.cc

Index: test/cctest/compiler/test-instruction.cc
diff --git a/test/cctest/compiler/test-instruction.cc b/test/cctest/compiler/test-instruction.cc
index 041e6d89fe0c46ff0c00926f4ea37f1e6d433062..a4c614a19bd671c64c2e8b6e2d4e32b76383635f 100644
--- a/test/cctest/compiler/test-instruction.cc
+++ b/test/cctest/compiler/test-instruction.cc
@@ -57,7 +57,7 @@ class InstructionTester : public HandleAndZoneScope {
     }
     InstructionBlocks* instruction_blocks =
         TestInstrSeq::InstructionBlocksFor(main_zone(), &schedule);
-    code = new TestInstrSeq(main_zone(), instruction_blocks);
+    code = new (main_zone()) TestInstrSeq(main_zone(), instruction_blocks);
   }
 
   Node* Int32Constant(int32_t val) {