Remove HFixedArrayBaseLength instruction and replace with regular HLoadNamedField.

src/ia32/lithium-codegen-ia32.cc

Index: src/ia32/lithium-codegen-ia32.cc
diff --git a/src/ia32/lithium-codegen-ia32.cc b/src/ia32/lithium-codegen-ia32.cc
index 96fb98e72d81e635e15cafeef8758910f31679b3..defae1c1629692337e26bde6ad268637f9fa7f33 100644
--- a/src/ia32/lithium-codegen-ia32.cc
+++ b/src/ia32/lithium-codegen-ia32.cc
@@ -1773,14 +1773,6 @@ void LCodeGen::DoConstantT(LConstantT* instr) {
 }
 
 
-void LCodeGen::DoFixedArrayBaseLength(
-    LFixedArrayBaseLength* instr) {
-  Register result = ToRegister(instr->result());
-  Register array = ToRegister(instr->value());
-  __ mov(result, FieldOperand(array, FixedArrayBase::kLengthOffset));
-}
-
-
 void LCodeGen::DoMapEnumLength(LMapEnumLength* instr) {
   Register result = ToRegister(instr->result());
   Register map = ToRegister(instr->value());