[OpenMP] Use compound operators for reduction combiner if available.

The OpenMP spec seems to require the compound operators be used for
+, *, &, |, and ^ reduction. So use these if a class has tho

[OpenMP] Use compound operators for reduction combiner if available.

The OpenMP spec seems to require the compound operators be used for
+, *, &, |, and ^ reduction. So use these if a class has those operators.
If not try the simple operators as we did previously to limit the impact
to existing code.

Fixes: https://bugs.llvm.org/show_bug.cgi?id=48584

Differential Revision: https://reviews.llvm.org/D101941

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[OPENMP50]Support 'task' modifier in reduction clauses.

Summary:
Added basic support for 'task' modifier in the reduction clauses in
non-simd parallel and worksharing constructs.

Reviewers: jdoerfe

[OPENMP50]Support 'task' modifier in reduction clauses.

Summary:
Added basic support for 'task' modifier in the reduction clauses in
non-simd parallel and worksharing constructs.

Reviewers: jdoerfert

Subscribers: yaxunl, guansong, cfe-commits, caomhin

Tags: #clang

Differential Revision: https://reviews.llvm.org/D78738

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[OPENMP]Add support for analysis of reduction variables.

Summary:
Reduction variables are the variables, for which the private copies
must be created in the OpenMP regions. Then they are initialized

[OPENMP]Add support for analysis of reduction variables.

Summary:
Reduction variables are the variables, for which the private copies
must be created in the OpenMP regions. Then they are initialized with
the predefined values depending on the reduction operation. After exit
from the OpenMP region the original variable is updated using the
reduction value and the value of the original reduction variable.

Reviewers: NoQ

Subscribers: guansong, jdoerfert, caomhin, kkwli0, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D65106

llvm-svn: 367116

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[OPENMP]Add -Wunintialized to the erroneous tests for future fix PR42392,
NFC.

llvm-svn: 365334

[OPENMP]Initial support for 'allocate' clause.

Added parsing/sema analysis of the allocate clause.

llvm-svn: 357068

[OpenMP] Refactor const restriction for reductions

As discussed in D56113, this patch refactors the implementation of the
const restriction for reductions to reuse a function introduced by
D56113.

[OpenMP] Refactor const restriction for reductions

As discussed in D56113, this patch refactors the implementation of the
const restriction for reductions to reuse a function introduced by
D56113. A side effect is that diagnostics sometimes now say
"variable" instead of "list item" when a list item is a variable.

Reviewed By: ABataev

Differential Revision: https://reviews.llvm.org/D56298

llvm-svn: 350440

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[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 runt

[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

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[OPENMP] Fix DSA processing for member declaration.

If the member declaration is captured in the OMPCapturedExprDecl, we may
loose data-sharing attribute info for this declaration. Patch fixes this

[OPENMP] Fix DSA processing for member declaration.

If the member declaration is captured in the OMPCapturedExprDecl, we may
loose data-sharing attribute info for this declaration. Patch fixes this
bug.

llvm-svn: 308629

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[OpenMP] fix segfault when a variable referenced in reduction clause is a reference parameter\nDifferential Revision: http://reviews.llvm.org/D24524

llvm-svn: 283223

Revert "[OPENMP] Allow skip expression after comma in clauses with lists."

This reverts commit http://reviews.llvm.org/rL265003. After some
thoughts decided to emit errors here.

llvm-svn: 265119

[OPENMP] Allow skip expression after comma in clauses with lists.

Compatibility fix for better compatibility with the existing software.

llvm-svn: 265003

[OPENMP 4.0] Use 'declare reduction' constructs in 'reduction' clauses.

OpenMP 4.0 allows to define custom reduction operations using '#pragma
omp declare reduction' construct. Patch allows to use t

[OPENMP 4.0] Use 'declare reduction' constructs in 'reduction' clauses.

OpenMP 4.0 allows to define custom reduction operations using '#pragma
omp declare reduction' construct. Patch allows to use this custom
defined reduction operations in 'reduction' clauses.

llvm-svn: 263701

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[OPENMP 4.5] Allow arrays in 'reduction' clause.
OpenMP 4.5, alogn with array sections, allows to use variables of array type in reductions.

llvm-svn: 258804

[OPENMP] Fixed processing of predetermined data-sharing attributes
Predetermined data-shared attributes for local variables are now considered as implicit. Also, patch prohibits changin of DSA for st

[OPENMP] Fixed processing of predetermined data-sharing attributes
Predetermined data-shared attributes for local variables are now considered as implicit. Also, patch prohibits changin of DSA for static memebers of classes.

llvm-svn: 255229

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[Lit Test] Updated 34 Lit tests to be C++11 compatible.

Added expected diagnostics new to C++11.
Expanded RUN line to: default, C++98/03 and C++11.

llvm-svn: 253371

[OPENMP 4.1] Sema analysis for array sections in 'reduction' clause.
OpenMP 4.1 allows to use array sections|subscript expressions in 'reduction' clauses. Added sema analysis, updated tests.

llvm-sv

[OPENMP 4.1] Sema analysis for array sections in 'reduction' clause.
OpenMP 4.1 allows to use array sections|subscript expressions in 'reduction' clauses. Added sema analysis, updated tests.

llvm-svn: 248880

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Allow static local variables specified on data-sharing attribute clauses.

http://reviews.llvm.org/D11619

llvm-svn: 247715

[OPENMP] -fopenmp enables OpenMP support (fix for http://llvm.org/PR23492)

-fopenmp turns on OpenMP support and links libiomp5 as OpenMP library. Also there is -fopenmp={libiomp5|libgomp} option tha

[OPENMP] -fopenmp enables OpenMP support (fix for http://llvm.org/PR23492)

-fopenmp turns on OpenMP support and links libiomp5 as OpenMP library. Also there is -fopenmp={libiomp5|libgomp} option that allows to override effect of -fopenmp and link libgomp library (if -fopenmp=libgomp is specified).
Differential Revision: http://reviews.llvm.org/D9736

llvm-svn: 237769

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[OPENMP] Fix for checking of data-sharing attributes for canonical var decls only.

Currently checks for active data-sharing attributes for variables are performed for found var decls. Instead these

[OPENMP] Fix for checking of data-sharing attributes for canonical var decls only.

Currently checks for active data-sharing attributes for variables are performed for found var decls. Instead these checks must be performed for canonical decls of these variables to avoid possible troubles with with the differently qualified re-declarations of the same variable, for example:
namespace A { int x; }
namespace B { using A::x; }
Both A::x and B::x actually reference the same object A::x and this fact must be taken into account during data-sharing attributes analysis.

llvm-svn: 235096

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[OPENMP] Codegen for 'reduction' clause in 'parallel' directive.

Emit a code for reduction clause. Next code should be emitted for reductions:

static kmp_critical_name lock = { 0 };

void reduce_fu

[OPENMP] Codegen for 'reduction' clause in 'parallel' directive.

Emit a code for reduction clause. Next code should be emitted for reductions:

static kmp_critical_name lock = { 0 };

void reduce_func(void *lhs[<n>], void *rhs[<n>]) {
...
*(Type<i> *)lhs[i] = RedOp<i>(*(Type<i> *)lhs[i], *(Type<i> *)rhs[i]);
...
}

... void *RedList[<n>] = {&<RHSExprs>[0], ..., &<RHSExprs>[<n> - 1]};
switch (__kmpc_reduce{_nowait}(<loc>, <gtid>, <n>, sizeof(RedList), RedList, reduce_func, &<lock>)) {
case 1:
...
<LHSExprs>[i] = RedOp<i>(*<LHSExprs>[i], *<RHSExprs>[i]);
...
__kmpc_end_reduce{_nowait}(<loc>, <gtid>, &<lock>);
break;
case 2:
...
Atomic(<LHSExprs>[i] = RedOp<i>(*<LHSExprs>[i], *<RHSExprs>[i]));
...
break;
default:
;
}
Reduction variables are a kind of a private variables, they have private copies, but initial values are chosen in accordance with the reduction operation.

Differential Revision: http://reviews.llvm.org/D8915

llvm-svn: 234583

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[OPENMP] Fixed data-sharing attributes processing for variables with global
storage.
This fix allows to use non-constant global variables, static local variables and static data
members in data-shari

[OPENMP] Fixed data-sharing attributes processing for variables with global
storage.
This fix allows to use non-constant global variables, static local variables and static data
members in data-sharing attribute clauses in parallel and task regions.

llvm-svn: 226250

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[OPENMP] Parsing and sema analysis for 'omp parallel sections' directive.

llvm-svn: 212516