Initial skeleton of Subzero.

src/IceTypes.h

+//===- subzero/src/IceTypes.h - Primitive ICE types -------------*- C++ -*-===//
+//
+//                        The Subzero Code Generator
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file declares a few properties of the primitive types allowed
+// in Subzero.  Every Subzero source file is expected to include
+// IceTypes.h.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SUBZERO_SRC_ICETYPES_H
+#define SUBZERO_SRC_ICETYPES_H
+
+enum IceType {
+  IceType_void,
+  IceType_i1,
+  IceType_i8,
+  IceType_i16,
+  IceType_i32,
+  IceType_i64,
+  IceType_f32,
+  IceType_f64,
+  IceType_NUM

[JF, 2014/04/04 04:05:26]

Comment on IceType_NUM needing to be the last enum.

Also see comment on xmacros in the implementation file.

[Jim Stichnoth, 2014/04/06 02:16:09]

Done.  IceType_NUM is no longer used in this CL, but I'll keep it for now since
the next CL uses it to size an array that maps types to register classes.

+};
+
+uint32_t iceTypeWidth(IceType T);

[JF, 2014/04/04 04:05:26]

Bits or bytes? I'd rather have all width related functions say what their unit
is.

It should also return a size_t.

[Jim Stichnoth, 2014/04/06 02:16:09]

Done.

+IceOstream &operator<<(class IceOstream &Str, IceType T);

[JF, 2014/04/04 04:05:26]

Could you make this a template so it works with any stream type? The
implementation doesn't look like it has anything special going on with
IceOstream.

The implementation will need to be moved to the header.

[Jim Stichnoth, 2014/04/06 02:16:09]

I made a templated operator << override which makes things much cleaner.  But I
suspect I didn't address your specific concern about this line?

+
+#endif // SUBZERO_SRC_ICETYPES_H