InternalProperty in mirror-debugger.js and ARM experimental assert

src/arm/lithium-codegen-arm.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 2457 matching lines @@
   // its slot of the pushing of safepoint registers is used to communicate the
   // offset to the location of the map check.
   Register temp = ToRegister(instr->TempAt(0));
   ASSERT(temp.is(r4));
   __ LoadHeapObject(InstanceofStub::right(), instr->function());
   static const int kAdditionalDelta = 4;
   int delta = masm_->InstructionsGeneratedSince(map_check) + kAdditionalDelta;
   Label before_push_delta;
   __ bind(&before_push_delta);
   __ BlockConstPoolFor(kAdditionalDelta);
+  if (delta * kPointerSize >= (1<<12)) {
+    // 12 is according to kLdrOffsetMask in MacroAssembler::GetRelocatedValueLocation.
+    // A value of delta may be as high as 20560 when optimizing xSerializeObject_ from mirror-debugger.js for mirror-object.js test.
+
+//    26 v8::internal::LCodeGen::DoDeferredInstanceOfKnownGlobal() /home/prybin/src-v8-6/src/arm/lithium-codegen-arm.cc:2481 0x0836ea63
+//    25 v8::internal::LCodeGen::DeferredInstanceOfKnownGlobal::Generate() /home/prybin/src-v8-6/src/arm/lithium-codegen-arm.cc:2378 0x0836e31b
+//    24 v8::internal::LCodeGen::GenerateDeferredCode() /home/prybin/src-v8-6/src/arm/lithium-codegen-arm.cc:252 0x08363dd3
+//    23 v8::internal::LCodeGen::GenerateCode() /home/prybin/src-v8-6/src/arm/lithium-codegen-arm.cc:82 0x083630de
+//    22 v8::internal::LChunk::Codegen() /home/prybin/src-v8-6/src/lithium.cc:426 0x081aba71
+//    21 v8::internal::OptimizingCompiler::GenerateAndInstallCode() /home/prybin/src-v8-6/src/compiler.cc:375 0x080aa5a4
+//    20 v8::internal::MakeCrankshaftCode() /home/prybin/src-v8-6/src/compiler.cc:213 0x080a994b
+//    19 v8::internal::GenerateCode() /home/prybin/src-v8-6/src/compiler.cc:388 0x080aa661
+//    18 v8::internal::MakeCode() /home/prybin/src-v8-6/src/compiler.cc:404 0x080aa6b9
+//    17 v8::internal::Compiler::CompileLazy() /home/prybin/src-v8-6/src/compiler.cc:803 0x080ad265
+//    16 v8::internal::CompileLazyHelper() /home/prybin/src-v8-6/src/objects.cc:7356 0x081f0cb4
+//    15 v8::internal::JSFunction::CompileOptimized() /home/prybin/src-v8-6/src/objects.cc:7459 0x081f1676
+//    14 v8::internal::Runtime_LazyRecompile() /home/prybin/src-v8-6/src/runtime.cc:8293 0x08274b0e
+//    13 v8::internal::Simulator::SoftwareInterrupt() /home/prybin/src-v8-6/src/arm/simulator-arm.cc:1844 0x0839e9a3
+//    12 v8::internal::Simulator::DecodeType7() /home/prybin/src-v8-6/src/arm/simulator-arm.cc:2670 0x083a0da1
+//    11 v8::internal::Simulator::InstructionDecode() /home/prybin/src-v8-6/src/arm/simulator-arm.cc:3235 0x083a278f
+//    10 v8::internal::Simulator::Execute() /home/prybin/src-v8-6/src/arm/simulator-arm.cc:3266 0x083a2880
+//    9 v8::internal::Simulator::Call() /home/prybin/src-v8-6/src/arm/simulator-arm.cc:3346 0x083a2c1f
+//    8 v8::internal::Invoke() /home/prybin/src-v8-6/src/execution.cc:118 0x080dce72
+//    7 v8::internal::Execution::Call() /home/prybin/src-v8-6/src/execution.cc:179 0x080dd388
+//    6 v8::Script::Run() /home/prybin/src-v8-6/src/api.cc:1612 0x080668ae
+//    5 v8::Shell::ExecuteString() /home/prybin/src-v8-6/src/d8.cc:166 0x0804ba03
+//    4 v8::SourceGroup::Execute() /home/prybin/src-v8-6/src/d8.cc:1550 0x08052b91
+//    3 v8::Shell::RunMain() /home/prybin/src-v8-6/src/d8.cc:1797 0x0805360a
+//    2 v8::Shell::Main() /home/prybin/src-v8-6/src/d8.cc:1851 0x0805387a
+//    1 main() /home/prybin/src-v8-6/src/d8.cc:1906 0x080539e6
+
+    FATAL("delta value is too large");
+  }
   __ mov(temp, Operand(delta * kPointerSize));
   __ StoreToSafepointRegisterSlot(temp, temp);
   CallCodeGeneric(stub.GetCode(),
                   RelocInfo::CODE_TARGET,
                   instr,
                   RECORD_SAFEPOINT_WITH_REGISTERS_AND_NO_ARGUMENTS);
   LEnvironment* env = instr->GetDeferredLazyDeoptimizationEnvironment();
   safepoints_.RecordLazyDeoptimizationIndex(env->deoptimization_index());
   // Put the result value into the result register slot and
   // restore all registers.
@@ skipping 3128 matching lines @@
   __ sub(scratch, result, Operand(index, LSL, kPointerSizeLog2 - kSmiTagSize));
   __ ldr(result, FieldMemOperand(scratch,
                                  FixedArray::kHeaderSize - kPointerSize));
   __ bind(&done);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal