C6000-CGT: Compiler bug - version 8.3.9

Hello TI!

We have been testing the CGT C6000 8.3.9 compiler version for couple of days now and it looks like we have found an issue.
Bellow is a code snippet of custom cosinus function that seems to return negative value instead of a positive.
Worth mentioning is that this code worked on CGT C6000 8.3.8 and it also works when build with compiler option -g instead of
-O3 --opt_for_speed=4 -DNDEBUG --symdebug:none .
I have successfully build a compiler test case and will submit it through a private channel ones I get a reply here.

Regards,
Enver

int main(int argc, char* argv[])
{
  //GIVEN
  const double ins = -100.0;
  const float expected32 = 0.86231887F;
  float floatOut;

  // WHEN
  floatOut = se::se_cos(static_cast<float>(ins));

  // THEN
  std::cout << floatOut << "\n";
  assert(floatOut == expected32);

  return 0;
}