[PATCH] D11182: [OPENMP 4.0] Initial support for 'omp declare reduction' construct.

[Alexey Bataev]

ABataev created this revision.
ABataev added a reviewer: rsmith.
ABataev added subscribers: cfe-commits, hfinkel, fraggamuffin, ejstotzer.

Add parsing, sema analysis and serialization/deserialization for 'declare reduction' construct.
User-defined reductions are defined as
```
#pragma omp declare reduction( reduction-identifier : typename-list : combiner ) [initializer ( initializer-expr )]
```
These custom reductions may be used in 'reduction' clauses of OpenMP constructs. The combiner specifies how partial results can be combined into a single value. The
combiner can use the special variable identifiers omp_in and omp_out that are of the type of the variables being reduced with this reduction-identifier. Each of them will
denote one of the values to be combined before executing the combiner. It is assumed that the special omp_out identifier will refer to the storage that holds the resulting
combined value after executing the combiner.
As the initializer-expr value of a user-defined reduction is not known a priori the initializer-clause can be used to specify one. Then the contents of the initializer-clause
will be used as the initializer for private copies of reduction list items where the omp_priv identifier will refer to the storage to be initialized. The special identifier
omp_orig can also appear in the initializer-clause and it will refer to the storage of the original variable to be reduced.

http://reviews.llvm.org/D11182

Files:
  include/clang/AST/DataRecursiveASTVisitor.h
  include/clang/AST/DeclBase.h
  include/clang/AST/DeclOpenMP.h
  include/clang/AST/RecursiveASTVisitor.h
  include/clang/Basic/DeclNodes.td
  include/clang/Basic/DiagnosticParseKinds.td
  include/clang/Basic/DiagnosticSemaKinds.td
  include/clang/Basic/OpenMPKinds.def
  include/clang/Parse/Parser.h
  include/clang/Sema/Sema.h
  include/clang/Serialization/ASTBitCodes.h
  lib/AST/ASTContext.cpp
  lib/AST/Decl.cpp
  lib/AST/DeclBase.cpp
  lib/AST/DeclOpenMP.cpp
  lib/AST/DeclPrinter.cpp
  lib/AST/ItaniumMangle.cpp
  lib/AST/MicrosoftMangle.cpp
  lib/Basic/OpenMPKinds.cpp
  lib/CodeGen/CGDecl.cpp
  lib/CodeGen/CodeGenModule.cpp
  lib/CodeGen/CodeGenModule.h
  lib/Parse/ParseDecl.cpp
  lib/Parse/ParseDeclCXX.cpp
  lib/Parse/ParseOpenMP.cpp
  lib/Parse/Parser.cpp
  lib/Sema/SemaLookup.cpp
  lib/Sema/SemaOpenMP.cpp
  lib/Sema/SemaTemplateInstantiateDecl.cpp
  lib/Serialization/ASTCommon.cpp
  lib/Serialization/ASTReaderDecl.cpp
  lib/Serialization/ASTWriterDecl.cpp
  test/OpenMP/declare_reduction_ast_print.c
  test/OpenMP/declare_reduction_ast_print.cpp
  test/OpenMP/declare_reduction_messages.c
  test/OpenMP/declare_reduction_messages.cpp
  tools/libclang/CIndex.cpp

-------------- next part --------------
A non-text attachment was scrubbed...
Name: D11182.29662.patch
Type: text/x-patch
Size: 77898 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/cfe-commits/attachments/20150714/6cc346af/attachment.bin>