Remove the compiled_transitions flag and cleanup the unused code.

src/mips/lithium-codegen-mips.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 4437 matching lines @@
   __ lw(scratch, FieldMemOperand(object_reg, HeapObject::kMapOffset));
   __ Branch(&not_applicable, ne, scratch, Operand(from_map));
 
   if (IsSimpleMapChangeTransition(from_kind, to_kind)) {
     Register new_map_reg = ToRegister(instr->new_map_temp());
     __ li(new_map_reg, Operand(to_map));
     __ sw(new_map_reg, FieldMemOperand(object_reg, HeapObject::kMapOffset));
     // Write barrier.
     __ RecordWriteField(object_reg, HeapObject::kMapOffset, new_map_reg,
                         scratch, GetRAState(), kDontSaveFPRegs);
-  } else if (FLAG_compiled_transitions) {
+  } else {
     PushSafepointRegistersScope scope(this, Safepoint::kWithRegisters);
     __ mov(a0, object_reg);
     __ li(a1, Operand(to_map));
     TransitionElementsKindStub stub(from_kind, to_kind);
     __ CallStub(&stub);
     RecordSafepointWithRegisters(
         instr->pointer_map(), 0, Safepoint::kNoLazyDeopt);
-  } else if (IsFastSmiElementsKind(from_kind) &&
-             IsFastDoubleElementsKind(to_kind)) {
-    Register fixed_object_reg = ToRegister(instr->temp());
-    ASSERT(fixed_object_reg.is(a2));
-    Register new_map_reg = ToRegister(instr->new_map_temp());
-    ASSERT(new_map_reg.is(a3));
-    __ li(new_map_reg, Operand(to_map));
-    __ mov(fixed_object_reg, object_reg);
-    CallCode(isolate()->builtins()->TransitionElementsSmiToDouble(),
-             RelocInfo::CODE_TARGET, instr);
-  } else if (IsFastDoubleElementsKind(from_kind) &&
-             IsFastObjectElementsKind(to_kind)) {
-    Register fixed_object_reg = ToRegister(instr->temp());
-    ASSERT(fixed_object_reg.is(a2));
-    Register new_map_reg = ToRegister(instr->new_map_temp());
-    ASSERT(new_map_reg.is(a3));
-    __ li(new_map_reg, Operand(to_map));
-    __ mov(fixed_object_reg, object_reg);
-    CallCode(isolate()->builtins()->TransitionElementsDoubleToObject(),
-             RelocInfo::CODE_TARGET, instr);
-  } else {
-    UNREACHABLE();
   }
   __ bind(&not_applicable);
 }
 
 
 void LCodeGen::DoTrapAllocationMemento(LTrapAllocationMemento* instr) {
   Register object = ToRegister(instr->object());
   Register temp = ToRegister(instr->temp());
   Label fail;
   __ TestJSArrayForAllocationMemento(object, temp, ne, &fail);
@@ skipping 1360 matching lines @@
   __ Subu(scratch, result, scratch);
   __ lw(result, FieldMemOperand(scratch,
                                 FixedArray::kHeaderSize - kPointerSize));
   __ bind(&done);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal