[arm] Remove embedded constant pool support.

src/arm/frames-arm.h

 // Copyright 2012 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_ARM_FRAMES_ARM_H_
 #define V8_ARM_FRAMES_ARM_H_
 
 namespace v8 {
 namespace internal {
 
@@ skipping 48 matching lines @@
 
 // Double registers d8 to d15 are callee-saved.
 const int kNumDoubleCalleeSaved = 8;
 
 
 // Number of registers for which space is reserved in safepoints. Must be a
 // multiple of 8.
 // TODO(regis): Only 8 registers may actually be sufficient. Revisit.
 const int kNumSafepointRegisters = 16;
 
-// The embedded constant pool pointer (r8/pp) is not included in the safepoint
-// since it is not tagged.  This register is preserved in the stack frame where
-// its value will be updated if GC code movement occurs.  Including it in the
-// safepoint (where it will not be relocated) would cause a stale value to be
-// restored.
-const RegList kConstantPointerRegMask =
-    FLAG_enable_embedded_constant_pool ? (1 << 8) : 0;
-const int kNumConstantPoolPointerReg =
-    FLAG_enable_embedded_constant_pool ? 1 : 0;
-
 // Define the list of registers actually saved at safepoints.
 // Note that the number of saved registers may be smaller than the reserved
 // space, i.e. kNumSafepointSavedRegisters <= kNumSafepointRegisters.
-const RegList kSafepointSavedRegisters =
-    kJSCallerSaved | (kCalleeSaved & ~kConstantPointerRegMask);
-const int kNumSafepointSavedRegisters =
-    kNumJSCallerSaved + kNumCalleeSaved - kNumConstantPoolPointerReg;
+const RegList kSafepointSavedRegisters = kJSCallerSaved | kCalleeSaved;
+const int kNumSafepointSavedRegisters = kNumJSCallerSaved + kNumCalleeSaved;
 
 // ----------------------------------------------------
 
 
 class EntryFrameConstants : public AllStatic {
  public:
   static const int kCallerFPOffset =
       -(StandardFrameConstants::kFixedFrameSizeFromFp + kPointerSize);
 };
 
@@ skipping 24 matching lines @@
   // Caller SP-relative.
   static const int kParam0Offset   = -2 * kPointerSize;
   static const int kReceiverOffset = -1 * kPointerSize;
 };
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_ARM_FRAMES_ARM_H_