================
@@ -508,6 +512,43 @@ OMPInterchangeDirective::CreateEmpty(const ASTContext &C,
unsigned NumClauses,
SourceLocation(), SourceLocation(), NumLoops);
}
+OMPFuseDirective *OMPFuseDirective::Create(
+ const ASTContext &C, SourceLocation StartLoc, SourceLocation EndLoc,
+ ArrayRef<OMPClause *> Clauses, unsigned NumLoops, unsigned NumLoopNests,
+ Stmt *AssociatedStmt, Stmt *TransformedStmt, Stmt *PreInits) {
+
+ OMPFuseDirective *Dir = createDirective<OMPFuseDirective>(
+ C, Clauses, AssociatedStmt, TransformedStmtOffset + 1, StartLoc, EndLoc,
+ NumLoops);
+ Dir->setTransformedStmt(TransformedStmt);
+ Dir->setPreInits(PreInits);
+ // The number of top level canonical nests could
+ // not match the total number of generated loops
+ // Example:
+ // Before fusion:
+ // for (int i = 0; i < N; ++i)
+ // for (int j = 0; j < M; ++j)
+ // A[i][j] = i + j;
+ //
+ // for (int k = 0; k < P; ++k)
+ // B[k] = k * 2;
+ // Here, NumLoopNests = 2, but NumLoops = 3.
----------------
Meinersbur wrote:
I don't think the NumLoops as in the total number loops is useful. It is either
a loop sequence, then you have the number of loop nests; a single loop nest,
then you have the number of nested loops; or you do an analysis of the entire
loop nest structure, then you need a graph as in `LoopSequenceAnalysis`.
https://github.com/llvm/llvm-project/pull/139293
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