Declare qregister[u]int, an integer the size of the machine's word

In almost all platforms, sizeof(qregisterint) == sizeof(void*) ==
sizeof(qptrdiff). It's different for architectures that have a pointer
with a size different from the machine word. This allows us to declare
variables of the most optimal size, even if the pointers are too wide or
too narrow.

The only currently-known architectures to match that case are the ILP32
builds on x86-64 (a.k.a "x32") and IA-64 (option -milp32, only available
on HP-UXi), which have 64-bit registers but 32-bit pointers.

Change-Id: I0f126b70ea9ea326bd3143797287e4b98210d36d
Reviewed-by: Lars Knoll <lars.knoll@digia.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/src/corelib/global/qglobal.h b/src/corelib/global/qglobal.h
index e68246e607..1e9b20757d 100644
--- a/src/corelib/global/qglobal.h
+++ b/src/corelib/global/qglobal.h
@@ -437,6 +437,8 @@ template <>    struct QIntegerForSize<2> { typedef quint16 Unsigned; typedef qin
 template <>    struct QIntegerForSize<4> { typedef quint32 Unsigned; typedef qint32 Signed; };
 template <>    struct QIntegerForSize<8> { typedef quint64 Unsigned; typedef qint64 Signed; };
 template <class T> struct QIntegerForSizeof: QIntegerForSize<sizeof(T)> { };
+typedef QIntegerForSize<Q_PROCESSOR_WORDSIZE>::Signed qregisterint;
+typedef QIntegerForSize<Q_PROCESSOR_WORDSIZE>::Unsigned qregisteruint;
 typedef QIntegerForSizeof<void*>::Unsigned quintptr;
 typedef QIntegerForSizeof<void*>::Signed qptrdiff;
 typedef qptrdiff qintptr;