[PR90859] Document status quo for "[OMP] Mappings for VLA different depending on…

[PR90859] Document status quo for "[OMP] Mappings for VLA different depending on 'target { c && { ! lp64 } }'"

	gcc/testsuite/
	PR middle-end/90859
	* c-c++-common/goacc/firstprivate-mappings-1.c: Update.

From-SVN: r272452

gcc/testsuite/ChangeLog

 2019-06-18  Thomas Schwinge  <thomas@codesourcery.com>
 
+	PR middle-end/90859
+	* c-c++-common/goacc/firstprivate-mappings-1.c: Update.
+
 	* c-c++-common/goacc/firstprivate-mappings-1.c: New file.
 	* g++.dg/goacc/firstprivate-mappings-1.C: Likewise.
 

gcc/testsuite/c-c++-common/goacc/firstprivate-mappings-1.c

@@ -426,6 +426,9 @@ vla (int array_li)
      { dg-final { scan-tree-dump {(?n)#pragma omp target oacc_parallel map\(from:array_so \[len: 4\]\) firstprivate\(array_li.[0-9]+\)} omplower { target { ! c++ } } } }
      { dg-final { scan-tree-dump {(?n)#pragma omp target oacc_parallel map\(from:array_so \[len: 4\]\) firstprivate\(} omplower { target { c++ } } } }
      (C++ computes an intermediate value, so can't scan for 'firstprivate(array_li)'.)  */
+  /* For C, non-LP64, the gimplifier has also created a mapping for the array
+     itself; PR90859.
+     { dg-final { scan-tree-dump {(?n)#pragma omp target oacc_parallel map\(from:array_so \[len: 4\]\) firstprivate\(array_li.[0-9]+\) map\(tofrom:\(\*array.[0-9]+\) \[len: D\.[0-9]+\]\) map\(firstprivate:array \[pointer assign, bias: 0\]\) \[} omplower { target { c && { ! lp64 } } } } } */
   {
     array_so = sizeof array;
   }