Adding unary op optimizations. missing assembly operations/

runtime/vm/flow_graph_compiler_x64.cc

Index: runtime/vm/flow_graph_compiler_x64.cc
===================================================================
--- runtime/vm/flow_graph_compiler_x64.cc	(revision 8118)
+++ runtime/vm/flow_graph_compiler_x64.cc	(working copy)
@@ -68,7 +68,9 @@
   __ Comment("Deopt stub for id %d", deopt_id_);
   __ Bind(entry_label());
   for (intptr_t i = 0; i < registers_.length(); i++) {
-    __ pushq(registers_[i]);
+    if (registers_[i] != kNoRegister) {
+      __ pushq(registers_[i]);
+    }
   }
   __ movq(RAX, Immediate(Smi::RawValue(reason_)));
   __ call(&StubCode::DeoptimizeLabel());
@@ -1009,6 +1011,11 @@
 }
 
 
+void FlowGraphCompiler::VisitUnaryOp(UnaryOpComp* comp) {
+  UNIMPLEMENTED();
+}
+
+
 void FlowGraphCompiler::EmitInstructionPrologue(Instruction* instr) {
   LocationSummary* locs = instr->locs();
   ASSERT(locs != NULL);