Revert r6748....

src/ia32/lithium-ia32.cc

 // Copyright 2011 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 1298 matching lines @@
 
 LInstruction* LChunkBuilder::DoBitNot(HBitNot* instr) {
   ASSERT(instr->value()->representation().IsInteger32());
   ASSERT(instr->representation().IsInteger32());
   LOperand* input = UseRegisterAtStart(instr->value());
   LBitNotI* result = new LBitNotI(input);
   return DefineSameAsFirst(result);
 }
 
 
-LInstruction* LChunkBuilder::DoNeg(HNeg* instr) {
-  Representation r = instr->representation();
-  if (r.IsInteger32()) {
-    LOperand* input = UseRegister(instr->value());
-    LNegI* result = new LNegI(input);
-    if (instr->CheckFlag(HValue::kBailoutOnMinusZero) ||
-        instr->CheckFlag(HValue::kCanOverflow)) {
-      AssignEnvironment(result);
-    }
-    return DefineSameAsFirst(result);
-  } else if (r.IsDouble()) {
-    LOperand* input = UseRegister(instr->value());
-    LOperand* temp = TempRegister();
-    return DefineSameAsFirst(new LNegD(input, temp));
-  } else {
-    ASSERT(r.IsTagged());
-    LOperand* input = UseFixed(instr->value(), eax);
-    LNegT* result = new LNegT(input);
-    return MarkAsCall(DefineFixed(result, eax), instr);
-  }
-}
-
-
 LInstruction* LChunkBuilder::DoBitOr(HBitOr* instr) {
   return DoBit(Token::BIT_OR, instr);
 }
 
 
 LInstruction* LChunkBuilder::DoBitXor(HBitXor* instr) {
   return DoBit(Token::BIT_XOR, instr);
 }
 
 
@@ skipping 706 matching lines @@
 LInstruction* LChunkBuilder::DoLeaveInlined(HLeaveInlined* instr) {
   HEnvironment* outer = current_block_->last_environment()->outer();
   current_block_->UpdateEnvironment(outer);
   return NULL;
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_IA32