Start adding an integrated assembler.

src/IceTargetLoweringX8632.cpp

Index: src/IceTargetLoweringX8632.cpp
diff --git a/src/IceTargetLoweringX8632.cpp b/src/IceTargetLoweringX8632.cpp
index 756508ec4d7ccc17dc011d67a86bbb0cb2c50e2c..f1437fd8678f833cee8dc69b45342f15a73c32db 100644
--- a/src/IceTargetLoweringX8632.cpp
+++ b/src/IceTargetLoweringX8632.cpp
@@ -513,6 +513,14 @@ void TargetX8632::emitVariable(const Variable *Var, const Cfg *Func) const {
   Str << "]";
 }
 
+x86::Address TargetX8632::stackVarToAsmOperand(const Variable *Var) const {
+  assert(!Var->hasReg());
+  int32_t Offset = Var->getStackOffset();
+  if (!hasFramePointer())
+    Offset += getStackAdjustment();
+  return x86::Address(x86::Register(getFrameOrStackReg()), Offset);
+}
+
 void TargetX8632::lowerArguments() {
   VarList &Args = Func->getArgs();
   // The first four arguments of vector type, regardless of their