Allow specific optimization passes to be requested from the command line. Now you can run "`ldc test.d -c -mem2reg -simplifycfg`" if you feel the urge. The -O<N> options are still supported, and are inserted in the passes list in the position where they appear on the command line. (so -simplifycfg -O1 -instcombine does the "right thing") One small change: -inline is renamed to -enable-inlining due to a naming conflict with the option to add the -inline pass. -inline now inserts the inlining pass in the position specified, not in the middle of -O<N>. (ldmd has been updated to translate -inline to -enable-inlining)

/*
 * Placed into the Public Domain
 * written by Walter Bright
 * www.digitalmars.com
 */

extern(C) void _d_invariant(Object o)
{   ClassInfo c;

    //printf("__d_invariant(%p)\n", o);

    // BUG: needs to be filename/line of caller, not library routine
    assert(o !is null);	// just do null check, not invariant check

    c = o.classinfo;
    do
    {
	if (c.classInvariant)
	{
	    (*c.classInvariant)(o);
	}
	c = c.base;
    } while (c);
}