[Libclc-dev] [PATCH 1/3] Implement barrier() builtin

[Tom Stellard]

I accidentally sent this series twice, sorry for the spam.

-Tom

On Wed, Jun 26, 2013 at 03:59:56PM -0700, Tom Stellard wrote:
> From: Tom Stellard <thomas.stellard at amd.com>
> 
> ---
>  r600/lib/SOURCES                         |  2 ++
>  r600/lib/synchronization/barrier.cl      | 15 +++++++++++++++
>  r600/lib/synchronization/barrier_impl.ll | 12 ++++++++++++
>  3 files changed, 29 insertions(+)
>  create mode 100644 r600/lib/synchronization/barrier.cl
>  create mode 100644 r600/lib/synchronization/barrier_impl.ll
> 
> diff --git a/r600/lib/SOURCES b/r600/lib/SOURCES
> index af8c8c8..16ef3ac 100644
> --- a/r600/lib/SOURCES
> +++ b/r600/lib/SOURCES
> @@ -2,3 +2,5 @@ workitem/get_group_id.ll
>  workitem/get_local_size.ll
>  workitem/get_local_id.ll
>  workitem/get_global_size.ll
> +synchronization/barrier.cl
> +synchronization/barrier_impl.ll
> diff --git a/r600/lib/synchronization/barrier.cl b/r600/lib/synchronization/barrier.cl
> new file mode 100644
> index 0000000..ac0b4b3
> --- /dev/null
> +++ b/r600/lib/synchronization/barrier.cl
> @@ -0,0 +1,15 @@
> +
> +#include <clc/clc.h>
> +
> +void barrier_local(void);
> +void barrier_global(void);
> +
> +void barrier(cl_mem_fence_flags flags) {
> +  if (flags & CLK_LOCAL_MEM_FENCE) {
> +    barrier_local();
> +  }
> +
> +  if (flags & CLK_GLOBAL_MEM_FENCE) {
> +    barrier_global();
> +  }
> +}
> diff --git a/r600/lib/synchronization/barrier_impl.ll b/r600/lib/synchronization/barrier_impl.ll
> new file mode 100644
> index 0000000..99ac018
> --- /dev/null
> +++ b/r600/lib/synchronization/barrier_impl.ll
> @@ -0,0 +1,12 @@
> +declare void @llvm.AMDGPU.barrier.local() nounwind
> +declare void @llvm.AMDGPU.barrier.global() nounwind
> +
> +define void @barrier_local() nounwind alwaysinline {
> +  call void @llvm.AMDGPU.barrier.local()
> +  ret void
> +}
> +
> +define void @barrier_global() nounwind alwaysinline {
> +  call void @llvm.AMDGPU.barrier.global()
> +  ret void
> +}
> -- 
> 1.7.11.4
> 
> 
> _______________________________________________
> Libclc-dev mailing list
> Libclc-dev at pcc.me.uk
> http://www.pcc.me.uk/cgi-bin/mailman/listinfo/libclc-dev