Reduce size of LIR instruction by one word and remove dead code.

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 2249 matching lines @@
   int delta = masm_->InstructionsGeneratedSince(map_check) + kAdditionalDelta;
   Label before_push_delta;
   __ bind(&before_push_delta);
   __ BlockConstPoolFor(kAdditionalDelta);
   __ mov(temp, Operand(delta * kPointerSize));
   __ StoreToSafepointRegisterSlot(temp, temp);
   CallCodeGeneric(stub.GetCode(),
                   RelocInfo::CODE_TARGET,
                   instr,
                   RECORD_SAFEPOINT_WITH_REGISTERS_AND_NO_ARGUMENTS);
-  ASSERT(instr->HasDeoptimizationEnvironment());
-  LEnvironment* env = instr->deoptimization_environment();
+  LEnvironment* env = instr->GetDeferredLazyDeoptimizationEnvironment();
   safepoints_.RecordLazyDeoptimizationIndex(env->deoptimization_index());
   // Put the result value into the result register slot and
   // restore all registers.
   __ StoreToSafepointRegisterSlot(result, result);
 }
 
 
 void LCodeGen::DoCmpT(LCmpT* instr) {
   Token::Value op = instr->op();
 
@@ skipping 597 matching lines @@
   // length is a small non-negative integer, due to the test above.
   __ cmp(length, Operand(0));
   __ b(eq, &invoke);
   __ bind(&loop);
   __ ldr(scratch, MemOperand(elements, length, LSL, 2));
   __ push(scratch);
   __ sub(length, length, Operand(1), SetCC);
   __ b(ne, &loop);
 
   __ bind(&invoke);
-  ASSERT(instr->HasPointerMap() && instr->HasDeoptimizationEnvironment());
+  ASSERT(instr->HasPointerMap());
   LPointerMap* pointers = instr->pointer_map();
   RecordPosition(pointers->position());
   SafepointGenerator safepoint_generator(
       this, pointers, Safepoint::kLazyDeopt);
   // The number of arguments is stored in receiver which is r0, as expected
   // by InvokeFunction.
   ParameterCount actual(receiver);
   __ InvokeFunction(function, actual, CALL_FUNCTION,
                     safepoint_generator, CALL_AS_METHOD);
   __ ldr(cp, MemOperand(fp, StandardFrameConstants::kContextOffset));
@@ skipping 526 matching lines @@
     default:
       Abort("Unimplemented type of LUnaryMathOperation.");
       UNREACHABLE();
   }
 }
 
 
 void LCodeGen::DoInvokeFunction(LInvokeFunction* instr) {
   ASSERT(ToRegister(instr->function()).is(r1));
   ASSERT(instr->HasPointerMap());
-  ASSERT(instr->HasDeoptimizationEnvironment());
   LPointerMap* pointers = instr->pointer_map();
   RecordPosition(pointers->position());
   SafepointGenerator generator(this, pointers, Safepoint::kLazyDeopt);
   ParameterCount count(instr->arity());
   __ InvokeFunction(r1, count, CALL_FUNCTION, generator, CALL_AS_METHOD);
   __ ldr(cp, MemOperand(fp, StandardFrameConstants::kContextOffset));
 }
 
 
 void LCodeGen::DoCallKeyed(LCallKeyed* instr) {
@@ skipping 1527 matching lines @@
   DeoptimizeIf(al, instr->environment());
 }
 
 
 void LCodeGen::DoDeleteProperty(LDeleteProperty* instr) {
   Register object = ToRegister(instr->object());
   Register key = ToRegister(instr->key());
   Register strict = scratch0();
   __ mov(strict, Operand(Smi::FromInt(strict_mode_flag())));
   __ Push(object, key, strict);
-  ASSERT(instr->HasPointerMap() && instr->HasDeoptimizationEnvironment());
+  ASSERT(instr->HasPointerMap());
   LPointerMap* pointers = instr->pointer_map();
   RecordPosition(pointers->position());
   SafepointGenerator safepoint_generator(
       this, pointers, Safepoint::kLazyDeopt);
   __ InvokeBuiltin(Builtins::DELETE, CALL_FUNCTION, safepoint_generator);
 }
 
 
 void LCodeGen::DoIn(LIn* instr) {
   Register obj = ToRegister(instr->object());
   Register key = ToRegister(instr->key());
   __ Push(key, obj);
-  ASSERT(instr->HasPointerMap() && instr->HasDeoptimizationEnvironment());
+  ASSERT(instr->HasPointerMap());
   LPointerMap* pointers = instr->pointer_map();
   RecordPosition(pointers->position());
   SafepointGenerator safepoint_generator(this, pointers, Safepoint::kLazyDeopt);
   __ InvokeBuiltin(Builtins::IN, CALL_FUNCTION, safepoint_generator);
 }
 
 
 void LCodeGen::DoDeferredStackCheck(LStackCheck* instr) {
   PushSafepointRegistersScope scope(this, Safepoint::kWithRegisters);
   __ CallRuntimeSaveDoubles(Runtime::kStackGuard);
@@ skipping 148 matching lines @@
   __ sub(scratch, result, Operand(index, LSL, kPointerSizeLog2 - kSmiTagSize));
   __ ldr(result, FieldMemOperand(scratch,
                                  FixedArray::kHeaderSize - kPointerSize));
   __ bind(&done);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal