Rollback of r11118, r11109 in trunk branch.

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 2633 matching lines @@
   Handle<Code> ic = isolate()->builtins()->KeyedLoadIC_Initialize();
   CallCode(ic, RelocInfo::CODE_TARGET, instr);
 }
 
 
 void LCodeGen::DoArgumentsElements(LArgumentsElements* instr) {
   Register scratch = scratch0();
   Register temp = scratch1();
   Register result = ToRegister(instr->result());
 
-  if (instr->from_inlined()) {
-    __ Subu(result, sp, 2 * kPointerSize);
-  } else {
-    // Check if the calling frame is an arguments adaptor frame.
-    Label done, adapted;
-    __ lw(scratch, MemOperand(fp, StandardFrameConstants::kCallerFPOffset));
-    __ lw(result, MemOperand(scratch, StandardFrameConstants::kContextOffset));
-    __ Xor(temp, result, Operand(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR)));
+  // Check if the calling frame is an arguments adaptor frame.
+  Label done, adapted;
+  __ lw(scratch, MemOperand(fp, StandardFrameConstants::kCallerFPOffset));
+  __ lw(result, MemOperand(scratch, StandardFrameConstants::kContextOffset));
+  __ Xor(temp, result, Operand(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR)));
 
-    // Result is the frame pointer for the frame if not adapted and for the real
-    // frame below the adaptor frame if adapted.
-    __ Movn(result, fp, temp);  // Move only if temp is not equal to zero (ne).
-    __ Movz(result, scratch, temp);  // Move only if temp is equal to zero (eq).
-  }
+  // Result is the frame pointer for the frame if not adapted and for the real
+  // frame below the adaptor frame if adapted.
+  __ Movn(result, fp, temp);  // Move only if temp is not equal to zero (ne).
+  __ Movz(result, scratch, temp);  // Move only if temp is equal to zero (eq).
 }
 
 
 void LCodeGen::DoArgumentsLength(LArgumentsLength* instr) {
   Register elem = ToRegister(instr->InputAt(0));
   Register result = ToRegister(instr->result());
 
   Label done;
 
   // If no arguments adaptor frame the number of arguments is fixed.
@@ skipping 112 matching lines @@
   LOperand* argument = instr->InputAt(0);
   if (argument->IsDoubleRegister() || argument->IsDoubleStackSlot()) {
     Abort("DoPushArgument not implemented for double type.");
   } else {
     Register argument_reg = EmitLoadRegister(argument, at);
     __ push(argument_reg);
   }
 }
 
 
-void LCodeGen::DoPop(LPop* instr) {
-  __ Drop(instr->count());
-}
-
-
 void LCodeGen::DoThisFunction(LThisFunction* instr) {
   Register result = ToRegister(instr->result());
   __ LoadHeapObject(result, instr->hydrogen()->closure());
 }
 
 
 void LCodeGen::DoContext(LContext* instr) {
   Register result = ToRegister(instr->result());
   __ mov(result, cp);
 }
@@ skipping 2241 matching lines @@
   __ Subu(scratch, result, scratch);
   __ lw(result, FieldMemOperand(scratch,
                                 FixedArray::kHeaderSize - kPointerSize));
   __ bind(&done);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal