[turbofan] Remove global InstructionOperand caches.

src/compiler/pipeline.h

 // 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.
 
 #ifndef V8_COMPILER_PIPELINE_H_
 #define V8_COMPILER_PIPELINE_H_
 
 #include "src/v8.h"
 
+// Clients of this interface shouldn't depend on lots of compiler internals.
+// Do not include anything from src/compiler here!
 #include "src/compiler.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
-// Clients of this interface shouldn't depend on lots of compiler internals.
 class CallDescriptor;
 class Graph;
 class InstructionSequence;
 class Linkage;
 class PipelineData;
 class RegisterConfiguration;
 class Schedule;
 
 class Pipeline {
  public:
@@ skipping 16 matching lines @@
                                              Schedule* schedule = nullptr);
 
   // Run just the register allocator phases.
   static bool AllocateRegistersForTesting(const RegisterConfiguration* config,
                                           InstructionSequence* sequence,
                                           bool run_verifier);
 
   static inline bool SupportedBackend() { return V8_TURBOFAN_BACKEND != 0; }
   static inline bool SupportedTarget() { return V8_TURBOFAN_TARGET != 0; }
 
-  static void SetUp();
-  static void TearDown();
-
  private:
   static Handle<Code> GenerateCodeForTesting(CompilationInfo* info,
                                              CallDescriptor* call_descriptor,
                                              Graph* graph, Schedule* schedule);
 
   CompilationInfo* info_;
   PipelineData* data_;
 
   // Helpers for executing pipeline phases.
   template <typename Phase>
   void Run();
   template <typename Phase, typename Arg0>
   void Run(Arg0 arg_0);
 
   CompilationInfo* info() const { return info_; }
   Isolate* isolate() { return info_->isolate(); }
 
   void BeginPhaseKind(const char* phase_kind);
   void RunPrintAndVerify(const char* phase, bool untyped = false);
   void GenerateCode(Linkage* linkage);
   void AllocateRegisters(const RegisterConfiguration* config,
                          bool run_verifier);
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_PIPELINE_H_