Commit Graph

7 Commits

Author SHA1 Message Date
Gheorghe-Teodor Bercea 2b40470c61 [OpenMP] Add a new version of the SPMD deinit kernel function
Summary: This patch adds a new runtime for the SPMD deinit kernel function which replaces the previous function. The new function takes as argument the flag which signals whether the runtime is required or not. This enables the compiler to optimize out the part of the deinit function which are not needed.

Reviewers: ABataev, caomhin

Reviewed By: ABataev

Subscribers: jholewinski, guansong, cfe-commits

Differential Revision: https://reviews.llvm.org/D54970

llvm-svn: 347915
2018-11-29 20:53:49 +00:00
Alexey Bataev 8bcc69c054 [OPENMP][NVPTX]Extend number of constructs executed in SPMD mode.
If the statements between target|teams|distribute directives does not
require execution in master thread, like constant expressions, null
statements, simple declarations, etc., such construct can be xecuted in
SPMD mode.

llvm-svn: 346551
2018-11-09 20:03:19 +00:00
Alexey Bataev 8d8e1235ab [OPENMP][NVPTX] Add support for lightweight runtime.
If the target construct can be executed in SPMD mode + it is a loop
based directive with static scheduling, we can use lightweight runtime
support.

llvm-svn: 340953
2018-08-29 18:32:21 +00:00
Gheorghe-Teodor Bercea ad4e579407 [OpenMP] Initialize data sharing stack for SPMD case
Summary: In the SPMD case, we need to initialize the data sharing and globalization infrastructure. This covers the case when an SPMD region calls a function in a different compilation unit.

Reviewers: ABataev, carlo.bertolli, caomhin

Reviewed By: ABataev

Subscribers: Hahnfeld, jholewinski, guansong, cfe-commits

Differential Revision: https://reviews.llvm.org/D49188

llvm-svn: 337015
2018-07-13 16:18:24 +00:00
Alexey Bataev 2a3320a928 [OPENMP, NVPTX] Do not globalize variables with reference/pointer types.
In generic data-sharing mode we do not need to globalize
variables/parameters of reference/pointer types. They already are placed
in the global memory.

llvm-svn: 332380
2018-05-15 18:01:01 +00:00
Carlo Bertolli 79712097c7 [OpenMP] Extend NVPTX SPMD implementation of combined constructs
Differential Revision: https://reviews.llvm.org/D43852

This patch extends the SPMD implementation to all target constructs and guards this implementation under a new flag.

llvm-svn: 326368
2018-02-28 20:48:35 +00:00
Arpith Chacko Jacob 44a87c9f1b [OpenMP] Codegen for the 'target parallel' directive on the NVPTX device.
This patch adds codegen for the 'target parallel' directive on the NVPTX
device.  We term offload OpenMP directives such as 'target parallel' and
'target teams distribute parallel for' as SPMD constructs.  SPMD constructs,
in contrast to Generic ones like the plain 'target', can never contain
a serial region.

SPMD constructs can be handled more efficiently on the GPU and do not
require the Warp Loop of the Generic codegen scheme. This patch adds
SPMD codegen support for 'target parallel' on the NVPTX device and can
be reused for other SPMD constructs.

Reviewers: ABataev
Differential Revision: https://reviews.llvm.org/D28755

llvm-svn: 292428
2017-01-18 19:35:00 +00:00