Currently poly-int type structures are passed by value to OpenMP runtime
functions for shared clauses etc.  This patch improves on this by passing
around poly-int structures by address to avoid copy-overhead.

gcc/ChangeLog
        * omp-low.c (use_pointer_for_field): Use pointer if the OMP data
        structure's field type is a poly-int.
---
 gcc/omp-low.cc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/gcc/omp-low.cc b/gcc/omp-low.cc
index da2051b0279..6b3853ed528 100644
--- a/gcc/omp-low.cc
+++ b/gcc/omp-low.cc
@@ -466,7 +466,8 @@ static bool
 use_pointer_for_field (tree decl, omp_context *shared_ctx)
 {
   if (AGGREGATE_TYPE_P (TREE_TYPE (decl))
-      || TYPE_ATOMIC (TREE_TYPE (decl)))
+      || TYPE_ATOMIC (TREE_TYPE (decl))
+      || POLY_INT_CST_P (DECL_SIZE (decl)))
     return true;
 
   /* We can only use copy-in/copy-out semantics for shared variables
-- 
2.25.1

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