emitIAS for cvtt?.*2.*

src/IceTargetLoweringX8632.h

Index: src/IceTargetLoweringX8632.h
diff --git a/src/IceTargetLoweringX8632.h b/src/IceTargetLoweringX8632.h
index 271d4a2fe5886681dc398e67cd948ab49f51363a..82a8208898f4084afdb0d731fdd14f881aac2aa3 100644
--- a/src/IceTargetLoweringX8632.h
+++ b/src/IceTargetLoweringX8632.h
@@ -256,13 +256,8 @@ protected:
     Context.insert(InstFakeDef::create(Func, Edx));
     Context.insert(InstFakeDef::create(Func, Eax));
   }
-  void _cvt(Variable *Dest, Operand *Src0) {
-    const bool Trunc = false;
-    Context.insert(InstX8632Cvt::create(Func, Dest, Src0, Trunc));
-  }
-  void _cvtt(Variable *Dest, Operand *Src0) {
-    const bool Trunc = true;
-    Context.insert(InstX8632Cvt::create(Func, Dest, Src0, Trunc));
+  void _cvt(Variable *Dest, Operand *Src0, InstX8632Cvt::CvtVariant Variant) {
+    Context.insert(InstX8632Cvt::create(Func, Dest, Src0, Variant));
   }
   void _div(Variable *Dest, Operand *Src0, Operand *Src1) {
     Context.insert(InstX8632Div::create(Func, Dest, Src0, Src1));