Re: -mregparm=3 (was Re: [PATCH] i386 do_machine_check() is redundant.

Robert Love
2003-09-30T04:55:11Z

On Tue, 2003-09-30 at 00:49, Valdis.Kletnieks@vt.edu wrote:

> I discovered that -test6-mm1 doesn't build with -ffreestanding with gcc 3.3.1,
> for an odd reason: when I specify -ffreestanding, it generates 'call abs' calls
> where it was able to do it inline otherwise. -ffreestanding says there's no library,
> so it can't inline the library call (which leaves no external call to 'abs()').

Hm, we may need to do something like:

#define abs(n) __builtin_abs((n))

because -ffreestanding implies -fno-builtin, which disables use of
built-in functions that do not begin with __builtin.

Robert Love