From: "Bart Van Assche" <[EMAIL PROTECTED]> Date: Thu, 26 Jun 2008 08:32:35 +0200
> On Thu, Jun 26, 2008 at 12:09 AM, David Miller <[EMAIL PROTECTED]> wrote: > > The extra 16 bytes of space allocated is so that GCC can perform a > > secondary reload of a quad floating point value. It always has to be > > present, because we can't satisfy a secondary reload by emitting yet > > another reload, it's the end of the possible level of recursions > > allowed by the reload pass. > > Is there any floating-point code present in the Linux kernel ? Yes, but not coming from C compiled code. Floating point is used in most of the memcpy/memset implementations of the sparc64 kernel. > Would it be a good idea to add an option to gcc that tells gcc that > the compiled code does not contain floating-point instructions, such > that gcc knows that no space has to be provided for a quad floating > point value ? I think it exists already, it's called -mno-fpu :-)
