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[Bug tree-optimization/21982] GCC should combine adjacent stdio calls
- From: "dnovillo at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 9 Jun 2005 14:37:14 -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 gcc dot gnu dot org 2005-06-09 14:37 -------
(In reply to comment #1)
> If side effects appear in the arguments, that also would be a problem, e.g.:
>
> printf("%d", i++);
> printf("%d", i++);
>
> should not be turned into:
>
> printf("%d%d", i++, i++);
>
There should be little danger of this. Side-effects are explicitly exposed in
GIMPLE. As long as the printf() calls are adjacent, we should be able to
combine them.
Diego.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21982