static void EmitOMPAlignedClause(CodeGenFunction &CGF, CodeGenModule &CGM,
const OMPAlignedClause &Clause) {
unsigned ClauseAlignment = 0;
if (auto AlignmentExpr = Clause.getAlignment()) {
auto AlignmentCI =
cast<llvm::ConstantInt>(CGF.EmitScalarExpr(AlignmentExpr));
ClauseAlignment = static_cast<unsigned>(AlignmentCI->getZExtValue());
}
for (auto E : Clause.varlists()) {
unsigned Alignment = ClauseAlignment;
if (Alignment == 0) {
// OpenMP [2.8.1, Description]
// If no optional parameter is specified, implementation-defined default
// alignments for SIMD instructions on the target platforms are assumed.
Alignment = CGM.getTargetCodeGenInfo().getOpenMPSimdDefaultAlignment(
E->getType());
}
assert((Alignment == 0 || llvm::isPowerOf2_32(Alignment)) &&
"alignment is not power of 2");
if (Alignment != 0) {
llvm::Value *PtrValue = CGF.EmitScalarExpr(E);
CGF.EmitAlignmentAssumption(PtrValue, Alignment);
}
}
}
OMPAlignedClause *
OMPAlignedClause::Create(const ASTContext &C, SourceLocation StartLoc,
SourceLocation LParenLoc, SourceLocation ColonLoc,
SourceLocation EndLoc, ArrayRef<Expr *> VL, Expr *A) {
void *Mem = C.Allocate(totalSizeToAlloc<Expr *>(VL.size() + 1));
OMPAlignedClause *Clause = new (Mem)
OMPAlignedClause(StartLoc, LParenLoc, ColonLoc, EndLoc, VL.size());
Clause->setVarRefs(VL);
Clause->setAlignment(A);
return Clause;
}
OMPAlignedClause *
OMPAlignedClause::Create(const ASTContext &C, SourceLocation StartLoc,
SourceLocation LParenLoc, SourceLocation ColonLoc,
SourceLocation EndLoc, ArrayRef<Expr *> VL, Expr *A) {
void *Mem = C.Allocate(llvm::RoundUpToAlignment(sizeof(OMPAlignedClause),
llvm::alignOf<Expr *>()) +
sizeof(Expr *) * (VL.size() + 1));
OMPAlignedClause *Clause = new (Mem)
OMPAlignedClause(StartLoc, LParenLoc, ColonLoc, EndLoc, VL.size());
Clause->setVarRefs(VL);
Clause->setAlignment(A);
return Clause;
}