Adding unary op optimizations. missing assembly operations/

runtime/vm/flow_graph_compiler_x64.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/globals.h"  // Needed here to get TARGET_ARCH_X64.
 #if defined(TARGET_ARCH_X64)
 
 #include "vm/flow_graph_compiler.h"
 
 #include "lib/error.h"
@@ skipping 50 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(DeoptimizationStub);
 };
 
 
 void DeoptimizationStub::GenerateCode(FlowGraphCompiler* compiler) {
   Assembler* assem = compiler->assembler();
 #define __ assem->
   __ 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());
   compiler->AddCurrentDescriptor(PcDescriptors::kOther,
                                  deopt_id_,
                                  deopt_token_index_,
                                  try_index_);
 #undef __
 }
 
@@ skipping 920 matching lines @@
   // Moved to intermediate_language_x64.cc.
   UNREACHABLE();
 }
 
 
 void FlowGraphCompiler::VisitBinaryOp(BinaryOpComp* comp) {
   UNIMPLEMENTED();
 }
 
 
+void FlowGraphCompiler::VisitUnaryOp(UnaryOpComp* comp) {
+  UNIMPLEMENTED();
+}
+
+
 void FlowGraphCompiler::EmitInstructionPrologue(Instruction* instr) {
   LocationSummary* locs = instr->locs();
   ASSERT(locs != NULL);
 
   locs->AllocateRegisters();
 
   // Load instruction inputs into allocated registers.
   for (intptr_t i = locs->input_count() - 1; i >= 0; i--) {
     Location loc = locs->in(i);
     ASSERT(loc.kind() == Location::kRegister);
@@ skipping 629 matching lines @@
 
 void FlowGraphCompiler::FinalizeComments(const Code& code) {
   code.set_comments(assembler_->GetCodeComments());
 }
 
 #undef __
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_X64