Use stack locations instead of register for binary Smi operations when possible.

runtime/vm/assembler_ia32.cc

Index: runtime/vm/assembler_ia32.cc
===================================================================
--- runtime/vm/assembler_ia32.cc	(revision 23244)
+++ runtime/vm/assembler_ia32.cc	(working copy)
@@ -1271,6 +1271,13 @@
 }
 
 
+void Assembler::andl(Register dst, const Address& address) {
+  AssemblerBuffer::EnsureCapacity ensured(&buffer_);
+  EmitUint8(0x23);
+  EmitOperand(dst, address);
+}
+
+
 void Assembler::orl(Register dst, Register src) {
   AssemblerBuffer::EnsureCapacity ensured(&buffer_);
   EmitUint8(0x0B);
@@ -1284,6 +1291,13 @@
 }
 
 
+void Assembler::orl(Register dst, const Address& address) {
+  AssemblerBuffer::EnsureCapacity ensured(&buffer_);
+  EmitUint8(0x0B);
+  EmitOperand(dst, address);
+}
+
+
 void Assembler::xorl(Register dst, Register src) {
   AssemblerBuffer::EnsureCapacity ensured(&buffer_);
   EmitUint8(0x33);
@@ -1297,6 +1311,13 @@
 }
 
 
+void Assembler::xorl(Register dst, const Address& address) {
+  AssemblerBuffer::EnsureCapacity ensured(&buffer_);
+  EmitUint8(0x33);
+  EmitOperand(dst, address);
+}
+
+
 void Assembler::addl(Register reg, const Immediate& imm) {
   AssemblerBuffer::EnsureCapacity ensured(&buffer_);
   EmitComplex(0, Operand(reg), imm);