Some interesting finding there what if any are the impacts for
performance in real life applications?
Steve
----- Original Message -----
From: "Dag-Erling Smørgrav" <[EMAIL PROTECTED]>
Kris Kennaway <[EMAIL PROTECTED]> writes:
> On Mon, Feb 16, 2004 at 03:52:16AM -0800, Wes Peters wrote:
> > Should I commit this?
> What effect does it have on non-i386 architectures?
It can't possibly hurt. If the stack is already aligned on a "better"
boundary (64 or 128 bytes), it is also aligned on a 32-byte boundary
since 64 and 128 are multiples of 32, and the patch is a no-op. If
only a 16-byte alignment is required, a 32-byte alignment wastes a
small amount of memory but does not hurt performance. I believe that
less-than-16 (and possibly even less-than-32) alignment is pessimal on
all platforms we support.
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