[turbofan] reduce allocations outside of pipeline

src/compiler/x64/code-generator-x64.cc

 // Copyright 2013 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/compiler/code-generator.h"
 
 #include "src/compiler/code-generator-impl.h"
 #include "src/compiler/gap-resolver.h"
 #include "src/compiler/node-matchers.h"
 #include "src/compiler/node-properties-inl.h"
@@ skipping 748 matching lines @@
     if (saves != 0) {  // Save callee-saved registers.
       int register_save_area_size = 0;
       for (int i = Register::kNumRegisters - 1; i >= 0; i--) {
         if (!((1 << i) & saves)) continue;
         __ pushq(Register::from_code(i));
         register_save_area_size += kPointerSize;
       }
       frame()->SetRegisterSaveAreaSize(register_save_area_size);
     }
   } else if (descriptor->IsJSFunctionCall()) {
-    CompilationInfo* info = linkage()->info();
+    CompilationInfo* info = this->info();
     __ Prologue(info->IsCodePreAgingActive());
     frame()->SetRegisterSaveAreaSize(
         StandardFrameConstants::kFixedFrameSizeFromFp);
 
     // Sloppy mode functions and builtins need to replace the receiver with the
     // global proxy when called as functions (without an explicit receiver
     // object).
     // TODO(mstarzinger/verwaest): Should this be moved back into the CallIC?
     if (info->strict_mode() == SLOPPY && !info->is_native()) {
       Label ok;
@@ skipping 205 matching lines @@
     UNREACHABLE();
   }
 }
 
 
 void CodeGenerator::AddNopForSmiCodeInlining() { __ nop(); }
 
 
 void CodeGenerator::EnsureSpaceForLazyDeopt() {
   int space_needed = Deoptimizer::patch_size();
-  if (!linkage()->info()->IsStub()) {
+  if (!info()->IsStub()) {
     // Ensure that we have enough space after the previous lazy-bailout
     // instruction for patching the code here.
     int current_pc = masm()->pc_offset();
     if (current_pc < last_lazy_deopt_pc_ + space_needed) {
       int padding_size = last_lazy_deopt_pc_ + space_needed - current_pc;
       __ Nop(padding_size);
     }
   }
   MarkLazyDeoptSite();
 }
 
 #undef __
 
 }  // namespace internal
 }  // namespace compiler
 }  // namespace v8