Re: AltiVec stack boundary

2007-09-29 Thread Daniel Jacobowitz
On Fri, Sep 28, 2007 at 05:22:41PM -0700, Geoffrey Keating wrote: > The case where this matters is a 32-bit ELF EABI target (the only case > on powerpc that allows 8-byte stack alignment) using -maltivec but not > -mabi=no-altivec. It's not clear to me that case works. I was originally worried ab

Re: AltiVec stack boundary

2007-09-28 Thread Geoffrey Keating
Daniel Jacobowitz <[EMAIL PROTECTED]> writes: > I'm sure this has come up before, but I don't understand how the > -maltivec definition of STACK_BOUNDARY can be right. We tell the > compiler that STACK_BOUNDARY == 128 if -maltivec, without telling it > that other people may ignore that, because -

AltiVec stack boundary

2007-08-07 Thread Daniel Jacobowitz
I'm sure this has come up before, but I don't understand how the -maltivec definition of STACK_BOUNDARY can be right. We tell the compiler that STACK_BOUNDARY == 128 if -maltivec, without telling it that other people may ignore that, because -maltivec is not supposed to be an ABI changing option b