Sorav Bansal <[EMAIL PROTECTED]> writes: > Hi all, > > There is a curious thing that I noticed in the kernel. The kernel does > not compile if you remove the -O2 flag in the Makefile. It gives an error > in an ASM directive mentioning that a register is being spilled.
The x86 has a very few registers. With in-line assembly you can easily tie some registers up. I guess gcc got into a corner it couldn't get out of. I would guess it's a bug in gcc, but at least it had the presence of mind to fail loudly. > Is this normal behavior? I suppose it is. Have you tried -O1? I know that the kernel depends upon certain functions being inlined for proper behavior. The kernel has some hard time constraints since it needs to deal with the hardware. You fiddle with the compile options at your own risk. -- Johan KULLSTAM -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
