VM: Enable branch merging of isnan, isinf.

runtime/vm/intermediate_language.cc

 // Copyright (c) 2013, 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/bootstrap.h"
 #include "vm/compiler.h"
 #include "vm/constant_propagator.h"
@@ skipping 3002 matching lines @@
   __ Drop(num_temps());
 #endif  // defined(TARGET_ARCH_DBC)
 }
 
 
 StrictCompareInstr::StrictCompareInstr(TokenPosition token_pos,
                                        Token::Kind kind,
                                        Value* left,
                                        Value* right,
                                        bool needs_number_check)
-    : ComparisonInstr(token_pos,
-                      kind,
-                      left,
-                      right,
-                      Thread::Current()->GetNextDeoptId()),
+    : TemplateComparison(token_pos,
+                         kind,
+                         Thread::Current()->GetNextDeoptId()),
       needs_number_check_(needs_number_check) {
   ASSERT((kind == Token::kEQ_STRICT) || (kind == Token::kNE_STRICT));
+  SetInputAt(0, left);
+  SetInputAt(1, right);
 }
 
 
 LocationSummary* InstanceCallInstr::MakeLocationSummary(Zone* zone,
                                                         bool optimizing) const {
   return MakeCallSummary(zone);
 }
 
 
 // DBC does not use specialized inline cache stubs for smi operations.
@@ skipping 375 matching lines @@
   intptr_t use_index = instr->env()->Length();  // Start index after inner.
   for (Environment::DeepIterator it(copy); !it.Done(); it.Advance()) {
     Value* value = it.CurrentValue();
     value->set_instruction(instr);
     value->set_use_index(use_index++);
     value->definition()->AddEnvUse(value);
   }
 }
 
 
+ComparisonInstr* DoubleTestOpInstr::CopyWithNewOperands(Value* new_left,
+                                                        Value* new_right) {
+  UNREACHABLE();
+  return NULL;
+}
+
+
 ComparisonInstr* EqualityCompareInstr::CopyWithNewOperands(Value* new_left,
                                                            Value* new_right) {
   return new EqualityCompareInstr(token_pos(),
                                   kind(),
                                   new_left,
                                   new_right,
                                   operation_cid(),
                                   deopt_id());
 }
 
@@ skipping 429 matching lines @@
   set_native_c_function(native_function);
   function().SetIsNativeAutoSetupScope(auto_setup_scope);
   Dart_NativeEntryResolver resolver = library.native_entry_resolver();
   bool is_bootstrap_native = Bootstrap::IsBootstapResolver(resolver);
   set_is_bootstrap_native(is_bootstrap_native);
 }
 
 #undef __
 
 }  // namespace dart