[M3devel] 64-bit alignment on 32-bit target?

[Jay K]

I believe LONGINT should be 64-aligned on 32-bit x86 so for example you can use InterlockedCompareExchange64 on it.

I suggest LONGINT should be 64-aligned so maybe all targets have the same layout, in general.


 - Jay


________________________________
From: M3devel <m3devel-bounces at elegosoft.com> on behalf of Rodney M. Bates <rodney_bates at lcwb.coop>
Sent: Friday, January 26, 2018 6:35 PM
To: m3devel
Subject: [M3devel] 64-bit alignment on 32-bit target?

Does anybody know:

Do we support, or does there even exist, a target that has 32-bit native words,
but has some instruction or other reason why some operand would need to be
64-bit aligned?

We appear to be 64-bit aligning LONGINT and big enough subranges thereof on
32-bit targets, which then needs to propagate through records, arrays, and objects
that contain them, as well as all heap allocated objects, stack frames, etc.

--
Rodney Bates
rodney.m.bates at acm.org
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