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

Valdis.Kletnieks
2003-09-30T04:49:41Z

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On Mon, 29 Sep 2003 23:36:06 +0200, Mikulas Patocka said:

> and compile programs with -mregparm=3 -ffreestanding even on normal linux
> distribution. I didn't try it for larger program, for simple it works. (it
> works as long as program doesn't call libc function via pointer to
> function).

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()').

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