[Interpreter] Ensure we save the BytecodeArray register properly in InterpreterEntryTrampoline buil…

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 897 matching lines @@
   //    receiver with the global proxy when called as functions (without an
   //    explicit receiver object).
   //  - Code aging of the BytecodeArray object.
 
   // Perform stack guard check.
   {
     Label ok;
     __ LoadRoot(r0, Heap::kStackLimitRootIndex);
     __ cmp(sp, r0);
     __ bge(&ok);
+    __ push(kInterpreterBytecodeArrayRegister);
     __ CallRuntime(Runtime::kStackGuard, 0);
+    __ pop(kInterpreterBytecodeArrayRegister);
     __ bind(&ok);
   }
 
   // Load accumulator, register file, bytecode offset, dispatch table into
   // registers.
   __ LoadRoot(kInterpreterAccumulatorRegister, Heap::kUndefinedValueRootIndex);
   __ subi(
       kInterpreterRegisterFileRegister, fp,
       Operand(kPointerSize + StandardFrameConstants::kFixedFrameSizeFromFp));
   __ mov(kInterpreterBytecodeOffsetRegister,
@@ skipping 1012 matching lines @@
     __ bkpt(0);
   }
 }
 
 
 #undef __
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_PPC