Reland "Record the arguments for CreateArrayComp correctly as arguments.".

runtime/vm/intermediate_language_ia32.cc

Index: runtime/vm/intermediate_language_ia32.cc
===================================================================
--- runtime/vm/intermediate_language_ia32.cc	(revision 10878)
+++ runtime/vm/intermediate_language_ia32.cc	(working copy)
@@ -977,7 +977,7 @@
 void CreateArrayComp::EmitNativeCode(FlowGraphCompiler* compiler) {
   // Allocate the array.  EDX = length, ECX = element type.
   ASSERT(locs()->in(0).reg() == ECX);
-  __ movl(EDX,  Immediate(Smi::RawValue(ElementCount())));
+  __ movl(EDX,  Immediate(Smi::RawValue(ArgumentCount())));
   compiler->GenerateCall(token_pos(),
                          try_index(),
                          &StubCode::AllocateArrayLabel(),
@@ -987,8 +987,8 @@
 
   // Pop the element values from the stack into the array.
   __ leal(EDX, FieldAddress(EAX, Array::data_offset()));
-  for (int i = ElementCount() - 1; i >= 0; --i) {
-    ASSERT(ElementAt(i)->IsUse());
+  for (int i = ArgumentCount() - 1; i >= 0; --i) {
+    ASSERT(ArgumentAt(i)->value()->IsUse());
     __ popl(Address(EDX, i * kWordSize));
   }
 }