Support %_IsConstructCall in Crankshaft pipeline.

src/arm/lithium-arm.cc

Index: src/arm/lithium-arm.cc
diff --git a/src/arm/lithium-arm.cc b/src/arm/lithium-arm.cc
index f672d4908ef1a076c1a55a6669fda05471b12d7c..3f253fcb123c93a0c00f058f630c6f3290ede6c6 100644
--- a/src/arm/lithium-arm.cc
+++ b/src/arm/lithium-arm.cc
@@ -1077,6 +1077,8 @@ LInstruction* LChunkBuilder::DoTest(HTest* instr) {
     } else if (v->IsTypeofIs()) {
       HTypeofIs* typeof_is = HTypeofIs::cast(v);
       return new LTypeofIsAndBranch(UseTempRegister(typeof_is->value()));
+    } else if (v->IsIsConstructCall()) {
+      return new LIsConstructCallAndBranch(TempRegister(), TempRegister());
     } else {
       if (v->IsConstant()) {
         if (HConstant::cast(v)->handle()->IsTrue()) {
@@ -1890,6 +1892,12 @@ LInstruction* LChunkBuilder::DoTypeofIs(HTypeofIs* instr) {
   return DefineSameAsFirst(new LTypeofIs(UseRegister(instr->value())));
 }
 
+
+LInstruction* LChunkBuilder::DoIsConstructCall(HIsConstructCall* instr) {
+  return DefineAsRegister(new LIsConstructCall(TempRegister()));
+}
+
+
 LInstruction* LChunkBuilder::DoSimulate(HSimulate* instr) {
   HEnvironment* env = current_block_->last_environment();
   ASSERT(env != NULL);