Delete code for the now unused IL instruction NumberNegate.

runtime/vm/intermediate_language_x64.cc

Index: runtime/vm/intermediate_language_x64.cc
===================================================================
--- runtime/vm/intermediate_language_x64.cc	(revision 12438)
+++ runtime/vm/intermediate_language_x64.cc	(working copy)
@@ -2016,64 +2016,6 @@
 }
 
 
-LocationSummary* NumberNegateInstr::MakeLocationSummary() const {
-  const intptr_t kNumInputs = 1;
-  const intptr_t kNumTemps = 1;  // Needed for doubles.
-  LocationSummary* summary =
-      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kCall);
-  summary->set_in(0, Location::RegisterLocation(RAX));
-  summary->set_out(Location::RegisterLocation(RAX));
-  summary->set_temp(0, Location::RegisterLocation(RCX));
-  return summary;
-}
-
-
-void NumberNegateInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
-  const ICData& ic_data = *instance_call()->ic_data();
-  ASSERT(!ic_data.IsNull());
-  ASSERT(ic_data.num_args_tested() == 1);
-
-  // TODO(srdjan): Implement for more checks.
-  ASSERT(ic_data.NumberOfChecks() == 1);
-  intptr_t test_class_id;
-  Function& target = Function::Handle();
-  ic_data.GetOneClassCheckAt(0, &test_class_id, &target);
-
-  Register value = locs()->in(0).reg();
-  Register result = locs()->out().reg();
-  ASSERT(value == result);
-  Label* deopt = compiler->AddDeoptStub(instance_call()->deopt_id(),
-                                        kDeoptUnaryOp);
-  if (test_class_id == kDoubleCid) {
-    Register temp = locs()->temp(0).reg();
-    __ testq(value, Immediate(kSmiTagMask));
-    __ j(ZERO, deopt);  // Smi.
-    __ CompareClassId(value, kDoubleCid);
-    __ j(NOT_EQUAL, deopt);
-    // Allocate result object.
-    const Class& double_class = compiler->double_class();
-    const Code& stub =
-        Code::Handle(StubCode::GetAllocationStubForClass(double_class));
-    const ExternalLabel label(double_class.ToCString(), stub.EntryPoint());
-    __ pushq(value);
-    compiler->GenerateCall(instance_call()->token_pos(),
-                           &label,
-                           PcDescriptors::kOther,
-                           instance_call()->locs());
-    // Result is in RAX.
-    ASSERT(result != temp);
-    __ movq(result, RAX);
-    __ popq(temp);
-    __ movsd(XMM0, FieldAddress(temp, Double::value_offset()));
-    __ DoubleNegate(XMM0);
-    __ movsd(FieldAddress(result, Double::value_offset()), XMM0);
-  } else {
-    UNREACHABLE();
-  }
-  ASSERT(ResultCid() == kDoubleCid);
-}
-
-
 LocationSummary* DoubleToDoubleInstr::MakeLocationSummary() const {
   const intptr_t kNumInputs = 1;
   const intptr_t kNumTemps = 0;