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 // This enum value must come last.
+};
+
+size_t iceTypeWidthInBytes(IceType Type);
+
+template <> IceOstream &operator<<(class IceOstream &Str, const IceType &Type);

[JF, 2014/04/16 01:27:32]

Same on this being in IceDefs.h

[Jim Stichnoth, 2014/04/21 20:26:40]

I think it's OK here.  This operator overload can't be declared without having
enum IceType fully defined.

(Alternatively, I should consider folding IceTypes.h and IceTypes.cpp into
IceDefs.h and some other source file.)

+
+#endif // SUBZERO_SRC_ICETYPES_H