On Wed, Nov 20, 2013 at 08:35:28AM -0500, Andrew MacLeod wrote:
> I also hacked up the compiler to report what the 'top' of the stack
> was for a compilation unit. I then ran it through a bootstrap and
> full testsuite run of all languages, and looked for the maximum
> number of context structs in use at one time. Normally only 1 or 2
> were ever in use, but its topped out at 7 during some of the openmp
> tests. So my current limit of 30 will likely never been reached.
??? You can trivially create a testcase where it will be reached
(and you certainly should, so that you actually test the fallback).
Say:
/* { dg-do compile } */
/* { dg-options "-fopenmp" } */
#define P1 _Pragma ("omp parallel")
#define P10 P1 P1 P1 P1 P1 P1 P1 P1 P1 P1
#define P100 P10 P10 P10 P10 P10 P10 P10 P10 P10 P10
void bar (void);
void
foo (void)
{
P100
bar ();
}
Jakub
