PPC: [turbofan] Frame elision for code stubs.

src/ppc/macro-assembler-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.
 
 #include <assert.h>  // For assert
 #include <limits.h>  // For LONG_MIN, LONG_MAX.
 
 #if V8_TARGET_ARCH_PPC
 
 #include "src/base/bits.h"
@@ skipping 974 matching lines @@
                    code_start_delta);
 }
 
 
 void MacroAssembler::LoadConstantPoolPointerRegister() {
   mov_label_addr(kConstantPoolRegister, ConstantPoolPosition());
 }
 
 void MacroAssembler::StubPrologue(StackFrame::Type type, Register base,
                                   int prologue_offset) {
-  LoadSmiLiteral(r11, Smi::FromInt(type));
-  PushCommonFrame(r11);
+  {
+    ConstantPoolUnavailableScope constant_pool_unavailable(this);
+    LoadSmiLiteral(r11, Smi::FromInt(type));
+    PushCommonFrame(r11);
+  }
   if (FLAG_enable_embedded_constant_pool) {
     if (!base.is(no_reg)) {
       // base contains prologue address
       LoadConstantPoolPointerRegister(base, -prologue_offset);
     } else {
       LoadConstantPoolPointerRegister();
     }
     set_constant_pool_available(true);
   }
 }
@@ skipping 3634 matching lines @@
   }
   if (mag.shift > 0) srawi(result, result, mag.shift);
   ExtractBit(r0, dividend, 31);
   add(result, result, r0);
 }
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_PPC