[OpenACC privatization] Skip processing if no work to be done [PR90115]

	gcc/
	PR middle-end/90115
	* omp-offload.c (execute_oacc_device_lower): Skip processing if no
	work to be done.

diff --git a/gcc/omp-offload.c b/gcc/omp-offload.c
index 336b48d5a3b7f7881ad7f0031ac81bc20a0d036c..8bfb8b36cf05c71c22a199011577dfdde92345ea 100644 (file)
--- a/gcc/omp-offload.c
+++ b/gcc/omp-offload.c
@@ -2246,7 +2246,8 @@ execute_oacc_device_lower ()
      COMPONENT_REFS, ARRAY_REFS and plain VAR_DECLs are also rewritten to use
      the new decl, adjusting types of appropriate tree nodes as necessary.  */
 
-  if (targetm.goacc.adjust_private_decl)
+  if (targetm.goacc.adjust_private_decl
+      && !adjusted_vars.is_empty ())
     {
       FOR_ALL_BB_FN (bb, cfun)
        for (gimple_stmt_iterator gsi = gsi_start_bb (bb);