* Re: TYPE_MODE vs AGGREGATE_TYPE_P
@ 2001-10-17 13:38 Richard Kenner
0 siblings, 0 replies; 5+ messages in thread
From: Richard Kenner @ 2001-10-17 13:38 UTC (permalink / raw)
To: zack; +Cc: gcc
Thanks. How about the other way round? (i.e. if TYPE_MODE is BLKmode,
is AGGREGATE_TYPE_P definitely true?)
I believe so, but why would you want to rely on such a thing?
I could conceive of an addition to GCC that would support mis-aligned
integer types, in which case that would no longer be the case.
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: TYPE_MODE vs AGGREGATE_TYPE_P
2001-10-17 11:49 ` Joern Rennecke
@ 2001-10-17 13:11 ` Zack Weinberg
0 siblings, 0 replies; 5+ messages in thread
From: Zack Weinberg @ 2001-10-17 13:11 UTC (permalink / raw)
To: Joern Rennecke; +Cc: gcc
On Wed, Oct 17, 2001 at 07:38:05PM +0100, Joern Rennecke wrote:
> Zack Weinberg wrote:
> >
> > Can AGGREGATE_TYPE_P ever be true for a type without TYPE_MODE
> > of that type being BLKmode?
>
> Yes, but the type must fit into the mode exactly and be suitably aligned.
Thanks. How about the other way round? (i.e. if TYPE_MODE is BLKmode,
is AGGREGATE_TYPE_P definitely true?)
zw
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: TYPE_MODE vs AGGREGATE_TYPE_P
2001-10-17 11:14 Zack Weinberg
@ 2001-10-17 11:49 ` Joern Rennecke
2001-10-17 13:11 ` Zack Weinberg
0 siblings, 1 reply; 5+ messages in thread
From: Joern Rennecke @ 2001-10-17 11:49 UTC (permalink / raw)
To: Zack Weinberg; +Cc: gcc
Zack Weinberg wrote:
>
> Can AGGREGATE_TYPE_P ever be true for a type without TYPE_MODE
> of that type being BLKmode?
Yes, but the type must fit into the mode exactly and be suitably aligned.
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: TYPE_MODE vs AGGREGATE_TYPE_P
@ 2001-10-17 11:39 Richard Kenner
0 siblings, 0 replies; 5+ messages in thread
From: Richard Kenner @ 2001-10-17 11:39 UTC (permalink / raw)
To: zack; +Cc: gcc
Can AGGREGATE_TYPE_P ever be true for a type without TYPE_MODE
of that type being BLKmode?
Sure. If the size and alignment of the type corresponds to that of
an integral mode, TYPE_MODE will be that mode.
^ permalink raw reply [flat|nested] 5+ messages in thread
* TYPE_MODE vs AGGREGATE_TYPE_P
@ 2001-10-17 11:14 Zack Weinberg
2001-10-17 11:49 ` Joern Rennecke
0 siblings, 1 reply; 5+ messages in thread
From: Zack Weinberg @ 2001-10-17 11:14 UTC (permalink / raw)
To: gcc
Can AGGREGATE_TYPE_P ever be true for a type without TYPE_MODE
of that type being BLKmode?
zw
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2001-10-17 13:38 UTC | newest]
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2001-10-17 11:49 ` Joern Rennecke
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