[turbofan] Add general support for sp-based frame access

src/compiler/linkage.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_LINKAGE_H_
 #define V8_COMPILER_LINKAGE_H_
 
 #include "src/base/flags.h"
 #include "src/compiler/frame.h"
 #include "src/compiler/machine-type.h"
 #include "src/compiler/operator.h"
 #include "src/frames.h"
 #include "src/runtime/runtime.h"
 #include "src/zone.h"
 
 namespace v8 {
 namespace internal {
 
 class CallInterfaceDescriptor;
 class CompilationInfo;
 
 namespace compiler {
 
 const RegList kNoCalleeSaved = 0;
 
+class FrameAccessState;
 class Node;
 class OsrHelper;
 
 // Describes the location for a parameter or a return value to a call.
 class LinkageLocation {
  public:
   bool operator==(const LinkageLocation& other) const {
     return bit_field_ == other.bit_field_;
   }
 
@@ skipping 309 matching lines @@
     return incoming_->GetReturnType(index);
   }
 
   bool ParameterHasSecondaryLocation(int index) const;
   LinkageLocation GetParameterSecondaryLocation(int index) const;
 
   // Get the frame offset for a given spill slot. The location depends on the
   // calling convention and the specific frame layout, and may thus be
   // architecture-specific. Negative spill slots indicate arguments on the
   // caller's frame.
-  FrameOffset GetFrameOffset(int spill_slot, Frame* frame) const;
+  FrameOffset GetFrameOffset(int spill_slot,
+                             FrameAccessState* frame_access_state) const;

[Benedikt Meurer, 2015/11/20 09:53:10]

Nit: pass as const* or const&.

[danno, 2015/11/24 12:02:00]

Done.

 
   static int FrameStateInputCount(Runtime::FunctionId function);
 
   // Get the location where an incoming OSR value is stored.
   LinkageLocation GetOsrValueLocation(int index) const;
 
   // A special parameter index for JSCalls that represents the closure.
   static const int kJSFunctionCallClosureParamIndex = -1;
 
   // A special {OsrValue} index to indicate the context spill slot.
@@ skipping 12 matching lines @@
   CallDescriptor* const incoming_;
 
   DISALLOW_COPY_AND_ASSIGN(Linkage);
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_LINKAGE_H_