[Bug debug/66714] gomp4: libgomp.oacc-c-c++-common/atomic_capture-1.c -g ICE

[vries at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66714

--- Comment #12 from vries at gcc dot gnu.org ---
Created attachment 35908
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35908&action=edit
patch to be more aggressive in gt_cleare_cache

Using this patch, we can trigger the problem with minimal testcase, and also
for openmp:
...
$ cat libgomp/testsuite/libgomp.c/pr66714.c
* { dg-do "compile" } */
/* { dg-additional-options "--param ggc-min-expand=0" } */
/* { dg-additional-options "--param ggc-min-heapsize=0" } */
/* { dg-additional-options "-g" } */

/* Minimized from on target-2.c.  */

void
fn3 (int x)
{
  double b[3 * x];
  int i;
  #pragma omp target
    #pragma omp parallel for
      for (i = 0; i < x; i++)
        b[i] += 1;
}
...