On 10/13/2011 12:26 AM, Zoltán Kócsi wrote:
> So I don't know if it is a bug (i.e. the compiler is supposed to protect local
> reg vars) or just misleading/omitted information in the info page?
It's the documentation that could perhaps be improved.
Local register variables are not protected from
If one writes a bit of code like this:
int foo( void )
{
register int x asm( "Rn" );
asm volatile ( "INSN_A %0 \n\t" : "=r" (x) );
bar();
asm volatile ( "INSN_B %0,%0 \n\t" : "=r" (x) : "0" (x) );
return x;
}
and Rn is a register not saved over function calls, then gcc does not save it
b
