Refactor branch instructions to enable further optimizations.

runtime/vm/intermediate_language.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/intermediate_language.h"
 
 #include "vm/bit_vector.h"
 #include "vm/dart_entry.h"
 #include "vm/flow_graph_allocator.h"
 #include "vm/flow_graph_builder.h"
@@ skipping 1321 matching lines @@
   Label load_true, done;
   __ j(true_condition, &load_true, Assembler::kNearJump);
   __ LoadObject(result, compiler->bool_false());
   __ jmp(&done, Assembler::kNearJump);
   __ Bind(&load_true);
   __ LoadObject(result, compiler->bool_true());
   __ Bind(&done);
 }
 
 
+void StrictCompareComp::EmitBranchCode(FlowGraphCompiler* compiler,
+                                       BranchInstr* branch) {
+  Register left = locs()->in(0).reg();
+  Register right = locs()->in(1).reg();
+  ASSERT(kind() == Token::kEQ_STRICT || kind() == Token::kNE_STRICT);
+  Condition true_condition = (kind() == Token::kEQ_STRICT) ? EQUAL : NOT_EQUAL;
+  __ CompareRegisters(left, right);
+  branch->EmitBranchOnCondition(compiler, true_condition);
+}
+
+
 void ClosureCallComp::EmitNativeCode(FlowGraphCompiler* compiler) {
   // The arguments to the stub include the closure.  The arguments
   // descriptor describes the closure's arguments (and so does not include
   // the closure).
   Register temp_reg = locs()->temp(0).reg();
   int argument_count = ArgumentCount();
   const Array& arguments_descriptor =
       DartEntry::ArgumentsDescriptor(argument_count - 1,
                                          argument_names());
   __ LoadObject(temp_reg, arguments_descriptor);
@@ skipping 217 matching lines @@
       use->AddToEnvUseList();
     }
   }
   instr->set_env(copy);
 }
 
 
 #undef __
 
 }  // namespace dart