Commit Graph

13 Commits

Author SHA1 Message Date
Alexey Bataev c5970623e0 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
2016-04-01 08:43:42 +00:00
Alexey Bataev 05968174c3 [OPENMP] Allow skip expression after comma in clauses with lists.
Compatibility fix for better compatibility with the existing software.

llvm-svn: 265003
2016-03-31 09:13:44 +00:00
Alexey Bataev 5129d3a4f5 [OPENMP] Fixed codegen for parameters privatization.
For parameters we shall take a derived type of parameters, not the original one.

llvm-svn: 237882
2015-05-21 09:47:46 +00:00
Alexey Bataev db39021cee [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
2015-05-20 04:24:19 +00:00
Alexey Bataev ccb59ec9b5 [OPENMP] Prohibit VLAs in 'private/firstprivate' clauses of 'task' directive.
Currently runtime does not allow to support variably modified types for 'private' and 'firstprivate' clauses in 'task' directives.

llvm-svn: 237674
2015-05-19 08:44:56 +00:00
Alexey Bataev 7a3e5853df [OPENMP] Prohibit variably modified types in 'copyprivate' clause.
Runtime does not allow to work with VLAs in copyprivate clause.

llvm-svn: 237672
2015-05-19 08:19:24 +00:00
Alexey Bataev f120c0d6f2 [OPENMP] Fixed analysis of function arguments and their data sharing attributes.
Added proper analysis for types of function arguments.

llvm-svn: 237670
2015-05-19 07:46:42 +00:00
Alexey Bataev 6ddfe1a6af [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
2015-04-16 13:49:42 +00:00
Alexey Bataev a63048e4fd [OPENMP] Codegen for 'copyprivate' clause ('single' directive).
If there is at least one 'copyprivate' clause is associated with the single directive, the following code is generated:

```
i32 did_it = 0;                                  \\ for 'copyprivate' clause
if(__kmpc_single(ident_t *, gtid)) {
  SingleOpGen();
  __kmpc_end_single(ident_t *, gtid);
  did_it = 1;                                    \\ for 'copyprivate' clause
}
<copyprivate_list>[0] = &var0;
...
<copyprivate_list>[n] = &varn;
call __kmpc_copyprivate(ident_t *, gtid, <copyprivate_list_size>,
                        <copyprivate_list>, <copy_func>, did_it);

...

void<copy_func>(void *LHSArg, void *RHSArg) {
  Dst = (void * [n])(LHSArg);
  Src = (void * [n])(RHSArg);
  Dst[0] = Src[0];
  ... Dst[n] = Src[n];
}
```
All list items from all 'copyprivate' clauses are gathered into single <copyprivate list> (<copyprivate_list_size> is a size in bytes of this list) and <copy_func> is used to propagate values of private or threadprivate variables from the 'single' region to other implicit threads from outer 'parallel' region.
Differential Revision: http://reviews.llvm.org/D8410

llvm-svn: 232932
2015-03-23 06:18:07 +00:00
Alexey Bataev 42971a3342 [OPENMP] Fixed DSA processing for predetermined shared variables.
This patch allows to use predetermined shared variables in private clauses in
parallel or tasks regions.

llvm-svn: 226549
2015-01-20 07:03:46 +00:00
Alexey Bataev 3255bf3aac [OPENMP] Disable copyprivate an nowait clauses in 'single' directive.
The copyprivate clause must not be used with the nowait clause in single
directive.

llvm-svn: 226429
2015-01-19 05:20:46 +00:00
Alexey Bataev 8b9cb9833f [OPENMP] Fixed DSA detecting for function parameters: by default they must be private.
llvm-svn: 213835
2014-07-24 02:33:58 +00:00
Alexey Bataev bae9a793fd [OPENMP] Parsing and sema analysis for 'copyprivate' clause.
llvm-svn: 211886
2014-06-27 10:37:06 +00:00