Add icmp and fcmp instructions to Subzero bitcode reader.

src/IceTypes.h

Index: src/IceTypes.h
diff --git a/src/IceTypes.h b/src/IceTypes.h
index 0c67e4396c142c7b9a2ce9dcab8393ce23c98655..2ce8f35af7c507b8319abf648d0be04070ff3884 100644
--- a/src/IceTypes.h
+++ b/src/IceTypes.h
@@ -58,6 +58,11 @@ bool isFloatingType(Type Ty); // scalar or vector
 bool isScalarFloatingType(Type Ty);
 bool isVectorFloatingType(Type Ty);
 
+/// Returns type generated by applying the compare instructions (icmp and fcmp)
+/// to arguments of the given type. Returns IceType_void if compare is not
+/// allowed.
+Type getCompareResultType(Type Ty);
+
 template <typename StreamType>
 inline StreamType &operator<<(StreamType &Str, const Type &Ty) {
   Str << typeString(Ty);