Add fast 64-bit integer ADD and SUB to the optimizing compiler.

runtime/vm/assembler_ia32.cc

Index: runtime/vm/assembler_ia32.cc
===================================================================
--- runtime/vm/assembler_ia32.cc	(revision 13168)
+++ runtime/vm/assembler_ia32.cc	(working copy)
@@ -365,6 +365,24 @@
 }
 
 
+void Assembler::movq(const Address& dst, XmmRegister src) {
+  AssemblerBuffer::EnsureCapacity ensured(&buffer_);
+  EmitUint8(0x66);
+  EmitUint8(0x0F);
+  EmitUint8(0xD6);
+  EmitOperand(src, Operand(dst));
+}
+
+
+void Assembler::movq(XmmRegister dst, const Address& src) {
+  AssemblerBuffer::EnsureCapacity ensured(&buffer_);
+  EmitUint8(0xF3);
+  EmitUint8(0x0F);
+  EmitUint8(0x7E);
+  EmitOperand(dst, Operand(src));
+}
+
+
 void Assembler::addss(XmmRegister dst, XmmRegister src) {
   AssemblerBuffer::EnsureCapacity ensured(&buffer_);
   EmitUint8(0xF3);
@@ -1035,6 +1053,13 @@
 }
 
 
+void Assembler::adcl(const Address& address, Register reg) {
+  AssemblerBuffer::EnsureCapacity ensured(&buffer_);
+  EmitUint8(0x11);
+  EmitOperand(reg, address);
+}
+
+
 void Assembler::subl(Register dst, Register src) {
   AssemblerBuffer::EnsureCapacity ensured(&buffer_);
   EmitUint8(0x2B);
@@ -1055,6 +1080,13 @@
 }
 
 
+void Assembler::subl(const Address& address, Register reg) {
+  AssemblerBuffer::EnsureCapacity ensured(&buffer_);
+  EmitUint8(0x29);
+  EmitOperand(reg, address);
+}
+
+
 void Assembler::cdq() {
   AssemblerBuffer::EnsureCapacity ensured(&buffer_);
   EmitUint8(0x99);
@@ -1140,6 +1172,13 @@
 }
 
 
+void Assembler::sbbl(const Address& address, Register dst) {
+  AssemblerBuffer::EnsureCapacity ensured(&buffer_);
+  EmitUint8(0x19);
+  EmitOperand(dst, address);
+}
+
+
 void Assembler::incl(Register reg) {
   AssemblerBuffer::EnsureCapacity ensured(&buffer_);
   EmitUint8(0x40 + reg);