Tag smi-constants as smi. This also fixes code that copies holes into arrays.

src/ia32/lithium-codegen-ia32.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 585 matching lines @@
 
 
 double LCodeGen::ToDouble(LConstantOperand* op) const {
   HConstant* constant = chunk_->LookupConstant(op);
   ASSERT(constant->HasDoubleValue());
   return constant->DoubleValue();
 }
 
 
 bool LCodeGen::IsInteger32(LConstantOperand* op) const {
-  return chunk_->LookupLiteralRepresentation(op).IsInteger32();
+  return chunk_->LookupLiteralRepresentation(op).IsSmiOrInteger32();
 }
 
 
 bool LCodeGen::IsSmi(LConstantOperand* op) const {
   return chunk_->LookupLiteralRepresentation(op).IsSmi();
 }
 
 
 Operand LCodeGen::ToOperand(LOperand* op) const {
   if (op->IsRegister()) return Operand(ToRegister(op));
@@ skipping 1503 matching lines @@
   }
 }
 
 
 void LCodeGen::DoBranch(LBranch* instr) {
   int true_block = chunk_->LookupDestination(instr->true_block_id());
   int false_block = chunk_->LookupDestination(instr->false_block_id());
   CpuFeatureScope scope(masm(), SSE2);
 
   Representation r = instr->hydrogen()->value()->representation();
-  if (r.IsInteger32() || r.IsSmi()) {
+  if (r.IsSmiOrInteger32()) {
     Register reg = ToRegister(instr->value());
     __ test(reg, Operand(reg));
     EmitBranch(true_block, false_block, not_zero);
   } else if (r.IsDouble()) {
     XMMRegister reg = ToDoubleRegister(instr->value());
     __ xorps(xmm0, xmm0);
     __ ucomisd(reg, xmm0);
     EmitBranch(true_block, false_block, not_equal);
   } else {
     ASSERT(r.IsTagged());
@@ skipping 4442 matching lines @@
                               FixedArray::kHeaderSize - kPointerSize));
   __ bind(&done);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_IA32