From: Tejas Belagod <tejas.belagod@arm.com>
Date: Mon, 30 Oct 2023 08:17:34 +0000 (+0530)
Subject: OpenMP/PolyInt: Pass poly-int structures by address to OMP libs.
X-Git-Tag: basepoints/gcc-16~2396
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b8ac06163e485547ece41ea802dfdc94b18ce134;p=thirdparty%2Fgcc.git

OpenMP/PolyInt: Pass poly-int structures by address to OMP libs.

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.cc (use_pointer_for_field): Use pointer if the OMP data
	structure's field type is a poly-int.
---

diff --git a/gcc/omp-low.cc b/gcc/omp-low.cc
index 4f113df9200..c36ae38cf8e 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