[LLVMdev] (no subject)

[Will Dietz]

Apologies, I could've sworn I've done that before.  It certianly works
with -stats.

Anyway, give -ftime-report a shot?

Alternatively, explicitly build the code into IR and use -time-passes with opt.

Hope this helps!

~Will

On Thu, Sep 12, 2013 at 2:54 PM, Niko Zarzani <koni10 at hotmail.it> wrote:
> I tried it on a simple file test.c (as you did) but actually clang does not
> show me any output.
>
> In addition I tried to set the CFLAGS specifying the -mllvm -time-passes
> options. However I still have anything about the time passes informations in
> the output and I also get this warning during the build with make:
> clang: warning: argument unused during compilation: '-mllvm -time-passes'
> Maybe the warning is due to the fact that the timing code is disabled, but I
> am not sure since it doesn't seem to work on a simple file.
>
> Have I done something wrong or am I missing something? Do you have any other
> suggestion?
>
> I really appreciated your help!
> Thank you in advance,
>
> Niko
>
>> Date: Thu, 12 Sep 2013 12:35:44 -0500
>> Subject: Re: [LLVMdev] (no subject)
>> From: willdtz at gmail.com
>> To: koni10 at hotmail.it
>> CC: llvmdev at cs.uiuc.edu
>
>>
>> To use options like "-time-passes" and "-stats" you need to prefix
>> them with "-mllvm":
>>
>> clang -mllvm -time-passes -O3 test.c -o /dev/null
>>
>> Note that I believe you need asserts enabled or some other build
>> configuration for this to work,
>> the timing code is disabled in fully release builds IIRC.
>>
>> Hope this helps!
>>
>> ~Will
>>
>> On Thu, Sep 12, 2013 at 11:50 AM, Niko Zarzani <koni10 at hotmail.it> wrote:
>> > Hi all,
>> >
>> > I was interested in knowing which of the passes spends the most of the
>> > time
>> > compiling the dns server BIND.
>> > With the -CC option I selected clang as my compiler and, as I was
>> > expecting,
>> > the compilation gave me no problems.
>> > Now I have a question, is there any way to set an option similiar to
>> > "-time-passes" to clang in order to get those information I was
>> > interested
>> > in?
>> > Or do you think there is another equivalent way to do that?
>> >
>> > Thank you in advance,
>> >
>> > Niko
>> >
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>> >