[Interpreter] Add explicit StackCheck bytecodes on function entry and back branches.

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 1014 matching lines @@
     __ bind(&no_args);
   }
 
   // TODO(rmcilroy): List of things not currently dealt with here but done in
   // fullcodegen's prologue:
   //  - Support profiler (specifically profiling_counter).
   //  - Call ProfileEntryHookStub when isolate has a function_entry_hook.
   //  - Allow simulator stop operations if FLAG_stop_at is set.
   //  - 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);
-    __ pop(kInterpreterBytecodeArrayRegister);
-    __ bind(&ok);
-  }
-
   // Load accumulator, register file, bytecode offset, dispatch table into
   // registers.
   __ LoadRoot(kInterpreterAccumulatorRegister, Heap::kUndefinedValueRootIndex);
   __ addi(kInterpreterRegisterFileRegister, fp,
           Operand(InterpreterFrameConstants::kRegisterFilePointerFromFp));
   __ mov(kInterpreterBytecodeOffsetRegister,
          Operand(BytecodeArray::kHeaderSize - kHeapObjectTag));
   __ LoadRoot(kInterpreterDispatchTableRegister,
               Heap::kInterpreterTableRootIndex);
   __ addi(kInterpreterDispatchTableRegister, kInterpreterDispatchTableRegister,
@@ skipping 1712 matching lines @@
     __ bkpt(0);
   }
 }
 
 
 #undef __
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_PPC