PPC: Fix constant pools for tail calls.

src/ppc/builtins-ppc.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.
 
 #if V8_TARGET_ARCH_PPC
 
 #include "src/codegen.h"
 #include "src/debug/debug.h"
 #include "src/deoptimizer.h"
 #include "src/full-codegen/full-codegen.h"
@@ skipping 2059 matching lines @@
   // Count receiver argument as well (not included in args_reg).
   __ addi(src_reg, src_reg, Operand(kPointerSize));
 
   if (FLAG_debug_code) {
     __ cmpl(src_reg, dst_reg);
     __ Check(lt, kStackAccessBelowStackPointer);
   }
 
   // Restore caller's frame pointer and return address now as they will be
   // overwritten by the copying loop.
-  if (FLAG_enable_embedded_constant_pool) {
-    __ LoadP(kConstantPoolRegister,
-             MemOperand(fp, StandardFrameConstants::kConstantPoolOffset));
-  }
-  __ LoadP(r0, MemOperand(fp, StandardFrameConstants::kCallerPCOffset));
-  __ LoadP(fp, MemOperand(fp, StandardFrameConstants::kCallerFPOffset));
-  __ mtlr(r0);
+  __ RestoreFrameStateForTailCall();
 
   // Now copy callee arguments to the caller frame going backwards to avoid
   // callee arguments corruption (source and destination areas could overlap).
 
   // Both src_reg and dst_reg are pointing to the word after the one to copy,
   // so they must be pre-decremented in the loop.
   Register tmp_reg = scratch3;
   Label loop;
   __ addi(tmp_reg, args_reg, Operand(1));  // +1 for receiver
   __ mtctr(tmp_reg);
@@ skipping 577 matching lines @@
     __ bkpt(0);
   }
 }
 
 
 #undef __
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_PPC