Fix build for LLVM >= r74640 Some LLVM objects now take a 'Context' to make multi-threaded apps easier. Since we're not multi-threaded it's safe to use llvm::getGlobalContext() which gives us the same behavior as we had before.

void main()
{
  static int[] b = [1, 2];
  b[0] = 2;
  
  typedef int[] ia = [1,2];
  static ia a;
  a[0] = 5;
}