Commit Graph

21 Commits

Author SHA1 Message Date
Alexey Bataev f59614d906 [OPENMP50]Add if clause in parallel for simd directive.
According to OpenMP 5.0, if clause can be used in parallel for simd directive. If condition in the if clause if false, the non-vectorized version of the
loop must be executed.
2019-11-27 09:56:25 -05:00
Gheorghe-Teodor Bercea 67796064c7 [OpenMP] Avoid remainder operations for loop index values on a collapsed loop nest.
Summary: Change the strategy for computing loop index variables after collapsing a loop nest via the collapse clause by replacing the expensive remainder operation with multiplications and additions.

Reviewers: ABataev, caomhin

Reviewed By: ABataev

Subscribers: guansong, arphaman, cfe-commits

Differential Revision: https://reviews.llvm.org/D56413

llvm-svn: 350759
2019-01-09 20:45:26 +00:00
Michael Kruse 0535137e4a [CodeGen] Generate llvm.loop.parallel_accesses instead of llvm.mem.parallel_loop_access metadata.
Instead of generating llvm.mem.parallel_loop_access metadata, generate
llvm.access.group on instructions and llvm.loop.parallel_accesses on
loops. There is one access group per generated loop.

This is clang part of D52116/r349725.

Differential Revision: https://reviews.llvm.org/D52117

llvm-svn: 349823
2018-12-20 21:24:54 +00:00
Alexey Bataev a4fa0b880a [OPENMP] General code improvements.
llvm-svn: 330140
2018-04-16 17:59:34 +00:00
Alexey Bataev a9b9cc0d79 [OPENMP] Remove more empty SourceLocations() from the code.
Removed more empty SourceLocations() from the OpenMP code and replaced
with the correct locations for better debug info emission.

llvm-svn: 323232
2018-01-23 18:12:38 +00:00
Alexey Bataev a8a9153a37 [OPENMP] Support for -fopenmp-simd option with compilation of simd loops
only.

Added support for -fopenmp-simd option that allows compilation of
simd-based constructs without emission of OpenMP runtime calls.

llvm-svn: 321560
2017-12-29 18:07:07 +00:00
Alexey Bataev 0e1b45897e [OPENMP] Fix PR35156: Get correct thread id with windows exceptions.
If the thread id is requested in windows mode within funclets, we may
generate incorrect function call that could lead to broken codegen.

llvm-svn: 317208
2017-11-02 14:25:34 +00:00
Alexey Bataev aee18557f7 [OPRNMP] Fix for PR33445: ICE: OpenMP target containing ordered for.
If exceptions are enabled, there may be a problem with the codegen of
the finalization functions from OpenMP runtime. It happens because of
the problem with the getting of thread identifier value. Patch tries to
fix it by using the result of the call of function
__kmpc_global_thread_num() rather than loading of value of outlined
function parameter.

llvm-svn: 311007
2017-08-16 14:01:00 +00:00
Alexey Bataev e754b18f5e [OPENMP] Emit non-debug version of outlined functions with original
name.

If the host code is compiled with the debug info, while the target
without, there is a problem that the compiler is unable to find the
debug wrapper. Patch fixes this problem by emitting special name for the
debug version of the code.

llvm-svn: 310511
2017-08-09 19:38:53 +00:00
Reid Kleckner 7a2037151c Remove unnecessary x86 backend requirements from OpenMP tests
Clang can generate LLVM IR for x86 without a registered x86 backend.

llvm-svn: 284836
2016-10-21 16:09:20 +00:00
Wolfgang Pieb eb505f9a1c Change a test to be less prone to random failures due to
unintended matches of label numbers to debug metadata
handles in release builds.

llvm-svn: 277094
2016-07-29 00:54:13 +00:00
Alexey Bataev a6f2a14b94 [OPENMP 4.5] Codegen for 'schedule' clause with monotonic/nonmonotonic modifiers.
OpenMP 4.5 adds support for monotonic/nonmonotonic modifiers in 'schedule' clause. Add codegen for these modifiers.

llvm-svn: 256666
2015-12-31 06:52:34 +00:00
Alexey Bataev 6f531ec0a2 [OPENMP] Remove explicit call for implicit barrier
#pragma omp parallel needs an implicit barrier that is currently done by an explicit call to __kmpc_barrier. However, the runtime already ensures a barrier in __kmpc_fork_call which currently leads to two barriers per region per thread.
Differential Revision: http://reviews.llvm.org/D15561

llvm-svn: 255992
2015-12-18 10:24:53 +00:00
Douglas Katzman 3459ce2e5e Stop messing with the 'g' group of options in CompilerInvocation.
With this change, most 'g' options are rejected by CompilerInvocation.
They remain only as Driver options. The new way to request debug info
from cc1 is with "-debug-info-kind={line-tables-only|limited|standalone}"
and "-dwarf-version={2|3|4}". In the absence of a command-line option
to specify Dwarf version, the Toolchain decides it, rather than placing
Toolchain-specific logic in CompilerInvocation.

Also fix a bug in the Windows compatibility argument parsing
in which the "rightmost argument wins" principle failed.

Differential Revision: http://reviews.llvm.org/D13221

llvm-svn: 249655
2015-10-08 04:24:12 +00:00
Alexey Bataev 2377fe95c6 [OPENMP] Outlined function for parallel and other regions with list of captured variables.
Currently all variables used in OpenMP regions are captured into a record and passed to outlined functions in this record. It may result in some poor performance because of too complex analysis later in optimization passes. Patch makes to emit outlined functions for parallel-based regions with a list of captured variables. It reduces code for 2*n GEPs, stores and loads at least.
Codegen for task-based regions remains unchanged because runtime requires that all captured variables are passed in captured record.

llvm-svn: 247251
2015-09-10 08:12:02 +00:00
Adrian Prantl bc068586ac Revert "Revert r241620 and follow-up commits" and move the initialization
of the llvm targets from clang/CodeGen into ClangCheck.cpp and CIndex.cpp.

llvm-svn: 241653
2015-07-08 01:00:30 +00:00
Adrian Prantl 142ec39739 Revert r241620 and follow-up commits while investigating linux buildbot failures.
llvm-svn: 241642
2015-07-07 23:19:46 +00:00
Adrian Prantl 726855a8da Update testcases that use precompiled headers to require a target after
r241620.

llvm-svn: 241623
2015-07-07 20:31:18 +00:00
Alexey Bataev 81c7ea0ec3 [OPENMP 4.0] Fixed codegen for 'cancellation point' construct.
Generate the next code for 'cancellation point':
if (__kmpc_cancellationpoint()) {
  __kmpc_cancel_barrier();
  <exit construct>;
}

llvm-svn: 241336
2015-07-03 09:56:58 +00:00
Alexey Bataev 20a05a6ccb [OPENMP] Fixed test for '#pragma omp parallel for simd'.
llvm-svn: 240009
2015-06-18 11:26:55 +00:00
Alexey Bataev 3b5b5c492e [OPENMP] Add support for 'omp parallel for' directive.
Codegen for this directive is a combined codegen for 'omp parallel' region with 'omp for simd' region inside. Clauses are supported.

llvm-svn: 240006
2015-06-18 10:10:12 +00:00