Align AllocateObjectComp and AllocateObjectWithBoundsCheckComp with ssa allocator.

runtime/vm/intermediate_language.cc

Index: runtime/vm/intermediate_language.cc
diff --git a/runtime/vm/intermediate_language.cc b/runtime/vm/intermediate_language.cc
index f0f1319608529f945c1d63103c819961c2e7a02a..e2c37a814b1e34dd5e31529a766315b788fd8609 100644
--- a/runtime/vm/intermediate_language.cc
+++ b/runtime/vm/intermediate_language.cc
@@ -179,16 +179,6 @@ bool Value::StaticTypeIsMoreSpecificThan(const AbstractType& dst_type) const {
 }
 
 
-intptr_t AllocateObjectComp::InputCount() const {
-  return arguments().length();
-}
-
-
-intptr_t AllocateObjectWithBoundsCheckComp::InputCount() const {
-  return arguments().length();
-}
-
-
 RawAbstractType* PhiInstr::StaticType() const {
   // TODO(regis): Return the least upper bound of the input static types.
   // It is much simpler to compute the least specific of the input static types,
@@ -1139,7 +1129,7 @@ void AllocateObjectComp::EmitNativeCode(FlowGraphCompiler* compiler) {
                          try_index(),
                          &label,
                          PcDescriptors::kOther);
-  __ Drop(arguments().length());  // Discard arguments.
+  __ Drop(ArgumentCount());  // Discard arguments.
 }