* print gcc optimization log
@ 2012-08-16 10:58 Xin Tong
2012-08-16 11:36 ` Ian Lance Taylor
0 siblings, 1 reply; 4+ messages in thread
From: Xin Tong @ 2012-08-16 10:58 UTC (permalink / raw)
To: gcc-help
I sometimes run into issues where i want to figure out why gcc is
performing a specific optimization and what the optimization affects
the tree. is there any documents on how to print gcc optimizations and
code generation logs ?
Xin
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: print gcc optimization log
2012-08-16 10:58 print gcc optimization log Xin Tong
@ 2012-08-16 11:36 ` Ian Lance Taylor
2012-08-16 15:37 ` Xin Tong
0 siblings, 1 reply; 4+ messages in thread
From: Ian Lance Taylor @ 2012-08-16 11:36 UTC (permalink / raw)
To: Xin Tong; +Cc: gcc-help
On Wed, Aug 15, 2012 at 8:58 PM, Xin Tong <xerox.time.tech@gmail.com> wrote:
> I sometimes run into issues where i want to figure out why gcc is
> performing a specific optimization and what the optimization affects
> the tree. is there any documents on how to print gcc optimizations and
> code generation logs ?
Unfortunately GCC has very little in the way of logs intended for end
users. About all I know is the -ftree-vectorizer-verbose information,
which gives useful feedback about the vectorization optimizations.
You can a lot of information by using -fdump-tree-all-details
-fdump-rtl-all-details, but it's difficult to interpret without the
source code and a working knowledge of GCC internals.
Ian
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: print gcc optimization log
2012-08-16 11:36 ` Ian Lance Taylor
@ 2012-08-16 15:37 ` Xin Tong
2012-08-16 18:31 ` Ian Lance Taylor
0 siblings, 1 reply; 4+ messages in thread
From: Xin Tong @ 2012-08-16 15:37 UTC (permalink / raw)
To: Ian Lance Taylor; +Cc: gcc-help
are these options enabled on production build, i.e. build i install
with apt-get install gcc on ubuntu ?
Xin
On Wed, Aug 15, 2012 at 10:21 PM, Ian Lance Taylor <iant@google.com> wrote:
> On Wed, Aug 15, 2012 at 8:58 PM, Xin Tong <xerox.time.tech@gmail.com> wrote:
>> I sometimes run into issues where i want to figure out why gcc is
>> performing a specific optimization and what the optimization affects
>> the tree. is there any documents on how to print gcc optimizations and
>> code generation logs ?
>
> Unfortunately GCC has very little in the way of logs intended for end
> users. About all I know is the -ftree-vectorizer-verbose information,
> which gives useful feedback about the vectorization optimizations.
>
> You can a lot of information by using -fdump-tree-all-details
> -fdump-rtl-all-details, but it's difficult to interpret without the
> source code and a working knowledge of GCC internals.
>
> Ian
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: print gcc optimization log
2012-08-16 15:37 ` Xin Tong
@ 2012-08-16 18:31 ` Ian Lance Taylor
0 siblings, 0 replies; 4+ messages in thread
From: Ian Lance Taylor @ 2012-08-16 18:31 UTC (permalink / raw)
To: Xin Tong; +Cc: gcc-help
On Thu, Aug 16, 2012 at 8:15 AM, Xin Tong <xerox.time.tech@gmail.com> wrote:
> are these options enabled on production build, i.e. build i install
> with apt-get install gcc on ubuntu ?
Yes.
Ian
> On Wed, Aug 15, 2012 at 10:21 PM, Ian Lance Taylor <iant@google.com> wrote:
>> On Wed, Aug 15, 2012 at 8:58 PM, Xin Tong <xerox.time.tech@gmail.com> wrote:
>>> I sometimes run into issues where i want to figure out why gcc is
>>> performing a specific optimization and what the optimization affects
>>> the tree. is there any documents on how to print gcc optimizations and
>>> code generation logs ?
>>
>> Unfortunately GCC has very little in the way of logs intended for end
>> users. About all I know is the -ftree-vectorizer-verbose information,
>> which gives useful feedback about the vectorization optimizations.
>>
>> You can a lot of information by using -fdump-tree-all-details
>> -fdump-rtl-all-details, but it's difficult to interpret without the
>> source code and a working knowledge of GCC internals.
>>
>> Ian
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2012-08-16 15:37 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2012-08-16 10:58 print gcc optimization log Xin Tong
2012-08-16 11:36 ` Ian Lance Taylor
2012-08-16 15:37 ` Xin Tong
2012-08-16 18:31 ` Ian Lance Taylor
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).