Add initial integrated assembler w/ some Xmm ops.

src/IceTargetLoweringX8632.cpp

Index: src/IceTargetLoweringX8632.cpp
diff --git a/src/IceTargetLoweringX8632.cpp b/src/IceTargetLoweringX8632.cpp
index d17173984a8441303957dd6d884b12bd7c03a7f9..edd0dec73e14eee5fe8f8084dbc47c3d04766860 100644
--- a/src/IceTargetLoweringX8632.cpp
+++ b/src/IceTargetLoweringX8632.cpp
@@ -24,6 +24,7 @@
 #include "IceRegistersX8632.h"
 #include "IceTargetLoweringX8632.def"
 #include "IceTargetLoweringX8632.h"
+#include "IceUtils.h"
 #include "llvm/ADT/DenseMap.h"
 #include "llvm/Support/MathExtras.h"
 #include "llvm/Support/CommandLine.h"
@@ -526,6 +527,14 @@ 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(RegX8632::getEncodedGPR(getFrameOrStackReg()), Offset);
+}
+
 void TargetX8632::lowerArguments() {
   VarList &Args = Func->getArgs();
   // The first four arguments of vector type, regardless of their
@@ -3708,7 +3717,7 @@ bool matchOffsetBase(Variable *&Base, int32_t &Offset, const Inst *&Reason) {
     if (Var == NULL || Const == NULL || Var->getIsMultidef())
       return false;
     int32_t MoreOffset = IsAdd ? Const->getValue() : -Const->getValue();
-    if (WouldOverflowAdd(Offset, MoreOffset))
+    if (Utils::WouldOverflowAdd(Offset, MoreOffset))
       return false;
     Base = Var;
     Offset += MoreOffset;