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Re: PATCH: Malloc fails if MALLOC_ALIGNMENT > 2 * SIZE_SZ
On Sat, 2011-08-20 at 14:10 -0400, Daniel Jacobowitz wrote:
> I think I explicitly called this out back in 2007, but if not, one of
> the victims of this breakage is GDB. Obviously the most important
> binary on any system :-)
>
> (Mental image: rock-paper-scissors. emacs running gdb debugging emacs...)
>
> I think it's a serious shame that we're breaking conforming code to
> preserve an ABI used pretty much only by emacs. Emacs's needs are
> pretty specialized; most applications want a different sort of storage
> for precached state.
In addition, there are significant speedups (from 15% to even 40%) in 32
bit code with float/double vectors (using the VSX instructions). This
change is important for the powerpc architecture.
--
[]'s
Thiago Jung Bauermann
IBM Linux Technology Center