[Bug inline-asm/37562] [4.2] -funroll-loops destroys inline asm code for powerpc

[rbuergel at web dot de]

------- Comment #3 from rbuergel at web dot de  2008-09-17 18:46 -------
> The second constraint should be using "b" instead of "r" as b says
> don't use r0.
Is this documented anywhere? The gcc manual says "r" means "any general purpose
register" and "b" means "Address base register". Any Documentation (for example
http://developer.apple.com/documentation/DeveloperTools/Reference/Assembler/PPCInstructions/chapter_6_section_2.html
) i've found, lists r0-r31 as general purpose registers.

Anyway, ignoring this point, you seem to be right. I remember 4.3.1 using r6
instead of r0, probably that's why it works. Unfortunately, i can't check your
suggestion until monday, when i'm back at work.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37562