Add double unary operation (negate). This is a replica of the destrpyed CL https://chromiumcoderevi…

runtime/vm/intermediate_language_arm.cc

Index: runtime/vm/intermediate_language_arm.cc
===================================================================
--- runtime/vm/intermediate_language_arm.cc	(revision 26168)
+++ runtime/vm/intermediate_language_arm.cc	(working copy)
@@ -3779,6 +3779,24 @@
 }
 
 
+LocationSummary* UnaryDoubleOpInstr::MakeLocationSummary() const {
+  const intptr_t kNumInputs = 1;
+  const intptr_t kNumTemps = 0;
+  LocationSummary* summary =
+      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+  summary->set_in(0, Location::RequiresFpuRegister());
+  summary->set_out(Location::RequiresFpuRegister());
+  return summary;
+}
+
+
+void UnaryDoubleOpInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
+  DRegister result = EvenDRegisterOf(locs()->out().fpu_reg());
+  DRegister value = EvenDRegisterOf(locs()->in(0).fpu_reg());
+  __ vnegd(result, value);
+}
+
+
 LocationSummary* SmiToDoubleInstr::MakeLocationSummary() const {
   const intptr_t kNumInputs = 1;
   const intptr_t kNumTemps = 0;