Re: "may be unused" warnings for gcc

On 2017-02-21 17:20:44 -0500, Peter Eisentraut wrote:
> On 2/20/17 09:41, Andres Freund wrote:
> > When building with a new-ish gcc (6.3.0 right now, but I've seen this
> > for a while) with optimization I get a number of warnings:
> 
> These all look like related to inlining/-O3.
> 
> I have attempted to fix these in the past, but I have found that -O3
> doesn't get any performance improvement, so I haven't bothered lately.

I've not run comparisons this year, but late last year I was seeing > 5%
< 10% benefits - that seems plenty enough to care.

- Andres