Change AsmOperandInfo::ConstraintVT to MVT, instead of EVT.

Accordingly, add MVT::getVT.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170550 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/CodeGen/ValueTypes.h

@@ -499,6 +499,12 @@ namespace llvm {
       }
       return (MVT::SimpleValueType)(MVT::INVALID_SIMPLE_VALUE_TYPE);
     }
+
+    /// Return the value type corresponding to the specified type.  This returns
+    /// all pointers as iPTR.  If HandleUnknown is true, unknown types are
+    /// returned as Other, otherwise they are invalid.
+    static MVT getVT(Type *Ty, bool HandleUnknown = false);
+
   };