Convert ToBooleanStub to a HydrogenStub. Currently just using HBranch, which is still fully impleme…

src/code-stubs-hydrogen.cc

Index: src/code-stubs-hydrogen.cc
diff --git a/src/code-stubs-hydrogen.cc b/src/code-stubs-hydrogen.cc
index 86bf0757d457fce3cb769f4d91aaec2e7637968d..24c66fa8a94ae65a9647d8678c236c171e2aa0b9 100644
--- a/src/code-stubs-hydrogen.cc
+++ b/src/code-stubs-hydrogen.cc
@@ -676,4 +676,24 @@ Handle<Code> CompareNilICStub::GenerateCode() {
   return DoGenerateCode(this);
 }
 
+
+template <>
+HValue* CodeStubGraphBuilder<ToBooleanStub>::BuildCodeInitializedStub() {
+  ToBooleanStub* stub = casted_stub();
+
+  IfBuilder if_true(this);
+  if_true.If<HBranch>(GetParameter(0), stub->GetTypes());
+  if_true.Then();
+    if_true.Return(graph()->GetConstant1());
+  if_true.Else();
+  if_true.End();
+  return graph()->GetConstant0();
+}
+
+
+Handle<Code> ToBooleanStub::GenerateCode() {
+  return DoGenerateCode(this);
+}
+
+
 } }  // namespace v8::internal