Initial skeleton of Subzero.

src/IceTypes.cpp

+//===- subzero/src/IceTypes.cpp - Primitive type properties ---------------===//
+//
+//                        The Subzero Code Generator
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file defines a few attributes of Subzero primitive types.
+//
+//===----------------------------------------------------------------------===//
+
+#include "IceDefs.h"
+#include "IceTypes.h"
+
+namespace Ice {
+
+namespace {
+
+#define X(tag, size, str)                                                      \
+  { size, str }                                                                \
+  ,
+
+const struct {
+  size_t TypeWidthInBytes;
+  IceString DisplayString;

[JF, 2014/04/23 03:51:28]

This should be a POD since it's global, const char * is probably the best
choice.

[Jim Stichnoth, 2014/04/26 15:02:11]

Done.

+} TypeAttributes[] = { ICETYPE_TABLE };
+
+#undef X
+
+const size_t TypeAttributesSize =
+    sizeof(TypeAttributes) / sizeof(*TypeAttributes);
+
+} // end anonymous namespace
+
+size_t typeWidthInBytes(IceType Type) {
+  size_t Width = 0;
+  size_t Index = static_cast<size_t>(Type);
+  if (Index < TypeAttributesSize) {
+    Width = TypeAttributes[Index].TypeWidthInBytes;
+  } else {
+    assert(0 && "Invalid type for typeWidthInBytes()");
+  }
+  return Width;
+}
+
+// ======================== Dump routines ======================== //
+
+template <> IceOstream &operator<<(IceOstream &Str, const IceType &Type) {
+  size_t Index = static_cast<size_t>(Type);
+  if (Index < TypeAttributesSize) {
+    Str << TypeAttributes[Index].DisplayString;
+  } else {
+    Str << "???";
+    assert(0 && "Invalid type for printing");
+  }
+
+  return Str;
+}
+
+} // end of namespace Ice