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Re: [PATCH] Define _LP64 on x86-64?
- From: Richard Henderson <rth at redhat dot com>
- To: Andreas Jaeger <aj at suse dot de>
- Cc: Gwenole Beauchesne <gbeauchesne at mandrakesoft dot com>, gcc-patches at gcc dot gnu dot org
- Date: Wed, 12 Mar 2003 01:48:05 -0800
- Subject: Re: [PATCH] Define _LP64 on x86-64?
- References: <howuopgjs5.fsf@gee.suse.de> <Pine.LNX.4.44.0210141016420.32337-100000@thalys.mandrakesoft.com> <20021014173813.GB1111@redhat.com> <u84r6c69bx.fsf@gromit.moeb> <20030311203041.GM29853@redhat.com> <u87kb5qb9l.fsf@gromit.moeb>
On Wed, Mar 12, 2003 at 08:44:54AM +0100, Andreas Jaeger wrote:
> To get the size of the pointer I use TYPE_PRECISION (size_type_node).
> I tried TYPE_PRECISON(ptr_type_node) but this is always zero. Is
> size_type_node the right think to do or is there a better solution?
POINTER_SIZE is exactly what you want.
> + /* Definitions for LP64 model. */
> + if (TYPE_PRECISION (long_integer_type_node) == 64
> + && TYPE_PRECISION (size_type_node) == 64
> + && TYPE_PRECISION (integer_type_node) == 32)
I guess this is ok. I'm agnostic as to whether "int" matters
here one way or another.
You'll want to document this in cpp.texi.
r~