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Re: PATCH: Darwin-specific 1-liners (2)
- From: Stan Shebs <shebs at apple dot com>
- To: Dale Johannesen <dalej at apple dot com>
- Cc: gcc-patches at gcc dot gnu dot org
- Date: Fri, 07 Dec 2001 10:34:24 -0800
- Subject: Re: PATCH: Darwin-specific 1-liners (2)
- References: <AFFEB69C-E9B5-11D5-8923-003065C86F94@apple.com>
Dale Johannesen wrote:
>
> Set BRANCH_COST to 1, which better reflects the hardware docs
> and is an empirical improvement.
Let's leave this one in Apple sources only for now; I think we
ought to understand better when it wins and when it doesn't.
> Set STACK_BOUNDARY to 128, to support Altivec.
We have another local patch that forces TARGET_ALTIVEC_ABI to be
always true for Darwin, so we can use the rs6000.h definition
of STACK_BOUNDARY instead now. Feel free to upbraid me for not
having installed this patch already...
> Set MAX_LONG_TYPE_SIZE to 32, for compile time speed and
> space improvement.
This one is OK.
> + /* Get HOST_WIDE_INT and CONST_INT to be 32 bits, for compile time
> + space/speed. */
Don't forget the all-important two spaces after the period. :-)
Stan