| From: | Peter Eisentraut <peter(dot)eisentraut(at)2ndquadrant(dot)com> |
|---|---|
| To: | Andres Freund <andres(at)anarazel(dot)de> |
| Cc: | pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: "may be unused" warnings for gcc |
| Date: | 2017-02-22 14:26:10 |
| Message-ID: | 15fb2350-b8b8-e188-278f-0b34fdee5210@2ndquadrant.com |
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| Lists: | pgsql-hackers |
On 2/21/17 22:17, Andres Freund wrote:
> I've not run comparisons this year, but late last year I was seeing > 5%
> < 10% benefits - that seems plenty enough to care.
You mean the 5-minute benchmarks on my laptop are not representative? ;-)
Here is a patch that I had lying around that clears the compiler
warnings under -O3 for me. It seems that they are a subset of what you
are seeing. Plausibly, as compilers are doing more analysis in larger
scopes, we can expect to see more of these.
--
Peter Eisentraut http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
| Attachment | Content-Type | Size |
|---|---|---|
| 0001-Silence-compiler-warnings-from-gcc-O3.patch | text/x-patch | 2.8 KB |
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