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[Bug tree-optimization/21982] GCC should combine adjacent stdio calls
- From: "dnovillo at redhat dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 10 Jun 2005 14:35:37 -0000
- Subject: [Bug tree-optimization/21982] GCC should combine adjacent stdio calls
- References: <20050609125653.21982.ghazi@gcc.gnu.org>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From dnovillo at redhat dot com 2005-06-10 14:35 -------
Subject: Re: GCC should combine adjacent stdio calls
On Fri, Jun 10, 2005 at 02:28:36PM -0000, joseph at codesourcery dot com wrote:
> Since putc and puts are typically faster than printf (not needing to parse
> the input) and we optimize printf of constants into them, it's not clear
> that merging printf with such functions would be an improvement either.
>
No, the patch does not merge different builtins. The whole idea
is to collapse multiple I/O calls of the same kind into one.
Whether this helps or not, I don't know. It certainly is a
straightforward transformation.
Diego.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21982