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Hey again,<br>
<br>
I forgot to say; this commit was taken out of Intel's clang patch.
All credit goes to Guy Benyei and his team, and thanks to him for
letting me commit this piece of it.<br>
<br>
Thanks,<br>
Fraser<br>
<br>
<div class="moz-cite-prefix">On 29/09/14 10:54, Fraser Cormack
wrote:<br>
</div>
<blockquote cite="mid:54292C38.6020508@codeplay.com" type="cite">Hi,
<br>
<br>
This patch allows an explicit cast from the literal 0 to an
event_t. The fact that you can use 0 as an event_t is in Section
6.12.10 of the OpenCL 1.2 specification. The use of an explicit
cast is used in the async_copy* kernels in the 'basic' subtest of
the conformance test suite:
<br>
<br>
__kernel void test_fn( const __global short8 *src, __global short8
*dst,
<br>
__local short8 *localBuffer, int
copiesPerWorkgroup, int copiesPerWorkItem )
<br>
{
<br>
int i;
<br>
for(i=0; i<copiesPerWorkItem; i++)
<br>
localBuffer[ get_local_id( 0 )*copiesPerWorkItem+i ] =
(short8)(short)0;
<br>
<br>
barrier( CLK_LOCAL_MEM_FENCE );
<br>
<br>
for(i=0; i<copiesPerWorkItem; i++)
<br>
localBuffer[ get_local_id( 0 )*copiesPerWorkItem+i ] =
src[ get_global_id( 0 )*copiesPerWorkItem+i ];
<br>
<br>
barrier( CLK_LOCAL_MEM_FENCE );
<br>
<br>
event_t event;
<br>
event = async_work_group_copy((__global
short8*)(dst+copiesPerWorkgroup*get_group_id(0)),
<br>
(__local const
short8*)localBuffer,
<br>
(size_t)copiesPerWorkgroup,
<br>
** HERE ** >>>> (event_t)0 );
<br>
wait_group_events( 1, &event );
<br>
}
<br>
<br>
<br>
I've also added a test for this behaviour.
<br>
<br>
Cheers,
<br>
Fraser
<br>
<br>
<br>
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<br>
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<br>
<pre class="moz-signature" cols="72">--
Fraser Cormack
Compiler Developer
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