Re: PATCH: alignment bug in gcc i386 crtfastmath.c

[Andrew Pinski <pinskia at physics dot uc dot edu>]

On Mar 18, 2006, at 12:19 PM, H. J. Lu wrote:
> What is the the required stack alignment that the compiler can
> guaranteed when not all files are compiled at the same time with
> the same option by the same person? Basically, compiler doesn't
> really know for sure what the stack alignment at the function
> entry point is.

Well the compiler cannot guarantee the stack alignment on x86 because
the ABI says it is only required to be 4 byte aligned.  On other
targets like PowerPC, the compile has to guarantee a stack alignment of
16bytes as it is required by the ABI.


-- Pinski