Revert r6748....

src/ia32/lithium-codegen-ia32.cc

Index: src/ia32/lithium-codegen-ia32.cc
===================================================================
--- src/ia32/lithium-codegen-ia32.cc	(revision 6753)
+++ src/ia32/lithium-codegen-ia32.cc	(working copy)
@@ -1035,36 +1035,6 @@
 }
 
 
-void LCodeGen::DoNegI(LNegI* instr) {
-  Register input = ToRegister(instr->value());
-  if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) {
-    __ test(input, Operand(input));
-    DeoptimizeIf(zero, instr->environment());
-  }
-  __ neg(input);
-  if (instr->hydrogen()->CheckFlag(HValue::kCanOverflow)) {
-    DeoptimizeIf(overflow, instr->environment());
-  }
-}
-
-
-void LCodeGen::DoNegD(LNegD* instr) {
-  XMMRegister reg = ToDoubleRegister(instr->value());
-  Register temp = ToRegister(instr->TempAt(0));
-  __ Set(temp, Immediate(0x80000000));
-  __ movd(xmm0, Operand(temp));
-  __ psllq(xmm0, 32);
-  __ xorpd(reg, xmm0);
-}
-
-
-void LCodeGen::DoNegT(LNegT* instr) {
-  UnaryOverwriteMode overwrite = UNARY_NO_OVERWRITE;
-  GenericUnaryOpStub stub(Token::SUB, overwrite, NO_UNARY_FLAGS);
-  CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr);
-}
-
-
 void LCodeGen::DoThrow(LThrow* instr) {
   __ push(ToOperand(instr->InputAt(0)));
   CallRuntime(Runtime::kThrow, 1, instr, false);