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Re: Proposal for printf functionality enchancement
On Wed, 19 Oct 2005, Daniel Jacobowitz whispered secretively:
> On Wed, Oct 19, 2005 at 02:12:31PM -0400, James Antill wrote:
>> Or maybe you mean that if you do "int x = bar2(); int y = bar2();"
>> you can optimize the second call (I could see this if you used
>> sprintf() with a local char[]). But that seems far fetched, and again
>> would be solved via. GCC understanding the mini-language properly.
>
> It means that loads of foo can be hoisted across the call to printf.
... and also that some loads can possibly be eliminated.
> Research suggests that this is less farfetched of a benefit than you
> think it is.
It's a definite benefit on platforms where register pressure is
significant, like x86.
--
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