[turbofan] Use correct register_save_area_size with OOL constant pool.

src/compiler/arm/code-generator-arm.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.
 
 #include "src/compiler/code-generator.h"
 
 #include "src/arm/macro-assembler-arm.h"
 #include "src/compiler/code-generator-impl.h"
 #include "src/compiler/gap-resolver.h"
 #include "src/compiler/node-matchers.h"
@@ skipping 601 matching lines @@
 void CodeGenerator::AssembleDeoptimizerCall(int deoptimization_id) {
   Address deopt_entry = Deoptimizer::GetDeoptimizationEntry(
       isolate(), deoptimization_id, Deoptimizer::LAZY);
   __ Call(deopt_entry, RelocInfo::RUNTIME_ENTRY);
 }
 
 
 void CodeGenerator::AssemblePrologue() {
   CallDescriptor* descriptor = linkage()->GetIncomingDescriptor();
   if (descriptor->kind() == CallDescriptor::kCallAddress) {
+    bool saved_pp;
     if (FLAG_enable_ool_constant_pool) {
       __ Push(lr, fp, pp);
       // Adjust FP to point to saved FP.
       __ sub(fp, sp, Operand(StandardFrameConstants::kConstantPoolOffset));
+      saved_pp = true;
     } else {
       __ Push(lr, fp);
       __ mov(fp, sp);
+      saved_pp = false;
     }
     const RegList saves = descriptor->CalleeSavedRegisters();
-    if (saves != 0) {  // Save callee-saved registers.
-      int register_save_area_size = 0;
+    if (saves != 0 || saved_pp) {
+      // Save callee-saved registers.
+      int register_save_area_size = saved_pp ? kPointerSize : 0;
       for (int i = Register::kNumRegisters - 1; i >= 0; i--) {
         if (!((1 << i) & saves)) continue;
         register_save_area_size += kPointerSize;
       }
       frame()->SetRegisterSaveAreaSize(register_save_area_size);
       __ stm(db_w, sp, saves);
     }
   } else if (descriptor->IsJSFunctionCall()) {
     CompilationInfo* info = linkage()->info();
     __ Prologue(info->IsCodePreAgingActive());
@@ skipping 207 matching lines @@
 
 void CodeGenerator::AddNopForSmiCodeInlining() {
   // On 32-bit ARM we do not insert nops for inlined Smi code.
 }
 
 #undef __
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8