Commit Graph

19 Commits

Author SHA1 Message Date
Alexey Bataev 673110d5d5 [OPENMP, NVPTX] Add check for SPMD mode in orphaned parallel directives.
If the orphaned directive is executed in SPMD mode, we need to emit the
check for the SPMD mode and run the orphaned parallel directive in
sequential mode.

llvm-svn: 332467
2018-05-16 13:36:30 +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
Alexey Bataev d7ff6d647f [OPENMP, NVPTX] Added support for L2 parallelism.
Added initial codegen for level 2, 3 etc. parallelism. Currently, all
the second, the third etc. parallel regions will run sequentially.

llvm-svn: 331642
2018-05-07 14:50:05 +00:00
Alexey Bataev e290ec02c7 [OPENMP, NVPTX] Fix codegen for the teams reduction.
Added NUW flags for all the add|mul|sub operations + replaced sdiv by udiv
as we operate on unsigned values only (addresses, converted to integers)

llvm-svn: 329411
2018-04-06 16:03:36 +00:00
Jonas Hahnfeld 891c7fb19d [OpenMP] Adjust arguments of nvptx runtime functions
In the future the compiler will analyze whether the OpenMP
runtime needs to be (fully) initialized and avoid that overhead
if possible. The functions already take an argument to transfer
that information to the runtime, so pass in the default value 1.
(This is needed for binary compatibility with libomptarget-nvptx
currently being upstreamed.)

Differential Revision: https://reviews.llvm.org/D40354

llvm-svn: 318836
2017-11-22 14:46:49 +00:00
Alexey Bataev 979966fcd8 [OPENMP] Allow value of thread local variables in target regions.
If the variable is marked as TLS variable and target device does not
support TLS, the error is emitted for the variable even if it is not
used in target regions. Patch fixes this and allows to use the values of
the TLS variables in target regions.

llvm-svn: 303768
2017-05-24 16:00:02 +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
Arpith Chacko Jacob 406acdba61 [OpenMP] Update target codegen for NVPTX device.
This patch includes updates for codegen of the target region for the NVPTX
device. It moves initializers from the compiler to the runtime and updates
the worker loop to assume parallel work is retrieved from the runtime. A
subsequent patch will update the codegen to retrieve the parallel work using
calls to the runtime. It includes the removal of the inline attribute
for the worker loop and disabling debug info in it.

This allows codegen for a target directive and serial execution on the
NVPTX device.

Reviewers: ABataev
Differential Revision: https://reviews.llvm.org/D28125

llvm-svn: 291121
2017-01-05 15:24:05 +00:00
Arpith Chacko Jacob b0d96f5375 Reverting commit r290983 while debugging test failure on windows.
llvm-svn: 290989
2017-01-04 19:14:43 +00:00
Arpith Chacko Jacob 4a24ad0a81 [OpenMP] Update target codegen for NVPTX device.
This patch includes updates for codegen of the target region for the NVPTX
device. It moves initializers from the compiler to the runtime and updates
the worker loop to assume parallel work is retrieved from the runtime. A
subsequent patch will update the codegen to retrieve the parallel work using
calls to the runtime. It includes the removal of the inline attribute
for the worker loop and disabling debug info in it.

This allows codegen for a target directive and serial execution on the
NVPTX device.

Reviewers: ABataev
Differential Revision: https://reviews.llvm.org/D28125

llvm-svn: 290983
2017-01-04 18:44:50 +00:00
Alexey Bataev 5e87c3465e [OPENMP] Fix for PR31417: assert failure when compiling trivial openmp
program

Offload related code is not quite ready yet, but some simple examples
must not crash the compiler. Patch fixes the problem in offloading code
with exceptions.

llvm-svn: 290364
2016-12-22 19:44:05 +00:00
Samuel Antao 1168d63cf9 [OpenMP] Use fopenmp prefix for all options introduced by the offloading implementation.
Summary: This patch changes the options used by offloading to start with -fopenmp instead of -fomp. This makes the option naming more consistent and materializes a suggestion by Richard Smith in http://reviews.llvm.org/D9888.

Reviewers: hfinkel, carlo.bertolli, arpith-jacob, ABataev

Subscribers: kkwli0, cfe-commits, caomhin

Differential Revision: http://reviews.llvm.org/D21841

llvm-svn: 274283
2016-06-30 21:22:08 +00:00
Arpith Chacko Jacob 5c309e475d [OpenMP] Base support for target directive codegen on NVPTX device.
Summary:
This patch adds base support for codegen of the target directive on the NVPTX device.

Reviewers: ABataev

Differential Revision: http://reviews.llvm.org/D17877

Reworked test case after buildbot failure on windows.
Updated patch to integrate r263837 and test case nvptx_target_firstprivate_codegen.cpp.

llvm-svn: 264018
2016-03-22 01:48:56 +00:00
Arpith Chacko Jacob 129fa9a048 Revert r263783 as buildbot failure is being investigated.
llvm-svn: 263784
2016-03-18 12:39:40 +00:00
Arpith Chacko Jacob ac563708ab [OpenMP] Base support for target directive codegen on NVPTX device.
Summary:
Reworked test case after buildbot failure on windows.

This patch adds base support for codegen of the target directive on the NVPTX device.

Reviewers: ABataev

Differential Revision: http://reviews.llvm.org/D17877

llvm-svn: 263783
2016-03-18 11:47:43 +00:00
Arpith Chacko Jacob 9cb61faa61 Revert commit http://reviews.llvm.org/D17877 to fix tests on x86.
llvm-svn: 263589
2016-03-15 21:26:34 +00:00
Arpith Chacko Jacob 5e1493b560 [OpenMP] Base support for target directive codegen on NVPTX device.
Summary:
This patch adds base support for codegen of the target directive on the NVPTX device.

Reviewers: ABataev

Differential Revision: http://reviews.llvm.org/D17877

llvm-svn: 263587
2016-03-15 21:04:57 +00:00
Arpith Chacko Jacob fc46c25d74 Reverted http://reviews.llvm.org/D17877 to fix tests.
llvm-svn: 263555
2016-03-15 16:19:13 +00:00
Arpith Chacko Jacob c61744c26b [OpenMP] Base support for target directive codegen on NVPTX device.
Summary:
This patch adds base support for codegen of the target directive on the NVPTX device.

Reviewers: ABataev

Differential Revision: http://reviews.llvm.org/D17877

llvm-svn: 263552
2016-03-15 15:24:52 +00:00