Revert r6748....

src/ia32/lithium-ia32.cc

Index: src/ia32/lithium-ia32.cc
===================================================================
--- src/ia32/lithium-ia32.cc	(revision 6753)
+++ src/ia32/lithium-ia32.cc	(working copy)
@@ -1316,29 +1316,6 @@
 }
 
 
-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);
 }