[LLVMdev] (no subject)
willdtz at gmail.com
Fri Sep 13 12:03:05 PDT 2013
Apologies, I could've sworn I've done that before. It certianly works
Anyway, give -ftime-report a shot?
Alternatively, explicitly build the code into IR and use -time-passes with opt.
Hope this helps!
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
> I really appreciated your help!
> Thank you in advance,
>> 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!
>> 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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>> > LLVMdev at cs.uiuc.edu http://llvm.cs.uiuc.edu
>> > http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
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