[turbofan] reduce allocations outside of pipeline

test/cctest/compiler/test-simplified-lowering.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 <limits>
 
 #include "src/compiler/access-builder.h"
 #include "src/compiler/change-lowering.h"
 #include "src/compiler/control-builders.h"
 #include "src/compiler/generic-node-inl.h"
@@ skipping 43 matching lines @@
   }
 
   void LowerAllNodesAndLowerChanges() {
     this->End();
     typer.Run();
     lowering.LowerAllNodes();
 
     Zone* zone = this->zone();
     CompilationInfo info(zone->isolate(), zone);
     Linkage linkage(
-        &info, Linkage::GetSimplifiedCDescriptor(zone, this->machine_sig_));
+        zone, Linkage::GetSimplifiedCDescriptor(zone, this->machine_sig_));
     ChangeLowering lowering(&jsgraph, &linkage);
     GraphReducer reducer(this->graph());
     reducer.AddReducer(&lowering);
     reducer.ReduceGraph();
     Verifier::Run(this->graph());
   }
 
   void CheckNumberCall(double expected, double input) {
     // TODO(titzer): make calls to NewNumber work in cctests.
     if (expected <= Smi::kMinValue) return;
@@ skipping 1876 matching lines @@
     TestingGraph t(Type::Unsigned32());
     Node* k = t.jsgraph.Constant(0);
     Node* mod = t.graph()->NewNode(t.simplified()->NumberModulus(), t.p0, k);
     Node* trunc = t.graph()->NewNode(t.simplified()->NumberToUint32(), mod);
     t.Return(trunc);
     t.Lower();
 
     CHECK_EQ(IrOpcode::kFloat64Mod, mod->opcode());
   }
 }