diff options
| author | Alexey Bataev <a.bataev@hotmail.com> | 2015-04-16 04:54:05 +0000 |
|---|---|---|
| committer | Alexey Bataev <a.bataev@hotmail.com> | 2015-04-16 04:54:05 +0000 |
| commit | 5a78b2480c717cbbf91747a154e3556b40ae8b76 (patch) | |
| tree | 8697923cf30b28b8beb6bf705d989eb7579684cf /lib/AST/Stmt.cpp | |
| parent | b4a4ab9bdd5e0cbb32588aee51a2c67f9a18373f (diff) | |
[OPENMP] Codegen for 'lastprivate' clause in 'for' directive.
#pragma omp for lastprivate(<var>)
for (i = a; i < b; ++b)
<BODY>;
This construct is translated into something like:
<last_iter> = alloca i32
<lastprivate_var> = alloca <type>
<last_iter> = 0
; No initializer for simple variables or a default constructor is called for objects.
; For arrays perform element by element initialization by the call of the default constructor.
...
OMP_FOR_START(...,<last_iter>, ..); sets <last_iter> to 1 if this is the last iteration.
<BODY>
...
OMP_FOR_END
if (<last_iter> != 0) {
<var> = <lastprivate_var> ; Update original variable with the lastprivate value.
}
call __kmpc_cancel_barrier() ; an implicit barrier to avoid possible data race.
Differential Revision: http://reviews.llvm.org/D8658
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@235074 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/AST/Stmt.cpp')
| -rw-r--r-- | lib/AST/Stmt.cpp | 44 |
1 files changed, 37 insertions, 7 deletions
diff --git a/lib/AST/Stmt.cpp b/lib/AST/Stmt.cpp index 32388b4fb3..205a3229ee 100644 --- a/lib/AST/Stmt.cpp +++ b/lib/AST/Stmt.cpp @@ -1246,17 +1246,47 @@ OMPFirstprivateClause *OMPFirstprivateClause::CreateEmpty(const ASTContext &C, return new (Mem) OMPFirstprivateClause(N); } -OMPLastprivateClause *OMPLastprivateClause::Create(const ASTContext &C, - SourceLocation StartLoc, - SourceLocation LParenLoc, - SourceLocation EndLoc, - ArrayRef<Expr *> VL) { +void OMPLastprivateClause::setPrivateCopies(ArrayRef<Expr *> PrivateCopies) { + assert(PrivateCopies.size() == varlist_size() && + "Number of private copies is not the same as the preallocated buffer"); + std::copy(PrivateCopies.begin(), PrivateCopies.end(), varlist_end()); +} + +void OMPLastprivateClause::setSourceExprs(ArrayRef<Expr *> SrcExprs) { + assert(SrcExprs.size() == varlist_size() && "Number of source expressions is " + "not the same as the " + "preallocated buffer"); + std::copy(SrcExprs.begin(), SrcExprs.end(), getPrivateCopies().end()); +} + +void OMPLastprivateClause::setDestinationExprs(ArrayRef<Expr *> DstExprs) { + assert(DstExprs.size() == varlist_size() && "Number of destination " + "expressions is not the same as " + "the preallocated buffer"); + std::copy(DstExprs.begin(), DstExprs.end(), getSourceExprs().end()); +} + +void OMPLastprivateClause::setAssignmentOps(ArrayRef<Expr *> AssignmentOps) { + assert(AssignmentOps.size() == varlist_size() && + "Number of assignment expressions is not the same as the preallocated " + "buffer"); + std::copy(AssignmentOps.begin(), AssignmentOps.end(), + getDestinationExprs().end()); +} + +OMPLastprivateClause *OMPLastprivateClause::Create( + const ASTContext &C, SourceLocation StartLoc, SourceLocation LParenLoc, + SourceLocation EndLoc, ArrayRef<Expr *> VL, ArrayRef<Expr *> SrcExprs, + ArrayRef<Expr *> DstExprs, ArrayRef<Expr *> AssignmentOps) { void *Mem = C.Allocate(llvm::RoundUpToAlignment(sizeof(OMPLastprivateClause), llvm::alignOf<Expr *>()) + - sizeof(Expr *) * VL.size()); + 5 * sizeof(Expr *) * VL.size()); OMPLastprivateClause *Clause = new (Mem) OMPLastprivateClause(StartLoc, LParenLoc, EndLoc, VL.size()); Clause->setVarRefs(VL); + Clause->setSourceExprs(SrcExprs); + Clause->setDestinationExprs(DstExprs); + Clause->setAssignmentOps(AssignmentOps); return Clause; } @@ -1264,7 +1294,7 @@ OMPLastprivateClause *OMPLastprivateClause::CreateEmpty(const ASTContext &C, unsigned N) { void *Mem = C.Allocate(llvm::RoundUpToAlignment(sizeof(OMPLastprivateClause), llvm::alignOf<Expr *>()) + - sizeof(Expr *) * N); + 5 * sizeof(Expr *) * N); return new (Mem) OMPLastprivateClause(N); } |