llvm dev - Nov 2011 - [LLVMdev] Fwd: Problem getting LoopInfo inside non-LoopPass

Nick,

   Thanks for this info, though this didn't help my problem at all.

On Wed, Nov 16, 2011 at 7:21 PM, Nick Lewycky <nicholas at mxc.ca> wrote:
> Never create a Twine as a local variable.
>
>  V->setName(Twine("new_name"));
>
> should work fine, however. Note that Twine itself has an implicit
> constructor from const char *, so this code:
>
>  V->setName("new_name");
>
> should also work fine.
>
> Nick
>
> Ryan Taylor wrote:
>
>> Basically I have two separate passes (first is a loop pass) which are
>> two different files and two different opts but I need to keep the data
>> consistent (ie, I want the changes to show up the resulting .bc output
>> file from the first (loop) pass so the second pass can use these new
>> names. Currently, when I print out "BB->getName().str()"
after the code
>> below, I get the correct renaming but this doesn't show up in the
output
>> file.
>>
>> I'm calling the opt like this:
>>
>> opt -load Release/lib/OptFile.so -optTag -S <file.bc> -o file.ll
>>
>> I have also tried:
>>
>> opt -load Release/lib/OptFile.so -optTag <file.bc> -o file.bc
>>
>> Thanks.
>>
>> ---------- Forwarded message ----------
>> From: *Ryan Taylor* <ryta1203 at gmail.com <mailto:ryta1203 at
gmail.com>>
>> Date: Wed, Nov 16, 2011 at 5:23 PM
>> Subject: Re: [LLVMdev] Problem getting LoopInfo inside non-LoopPass
>> To: llvmdev at cs.uiuc.edu <mailto:llvmdev at cs.uiuc.edu>
>>
>>
>> LLVMers,
>>
>>   So, I'm trying to write a pass that changes the names of the
basic
>> blocks through the use of Value, so:
>>
>>   Value *V = *BasicBlockPtr;
>>   const Twine Tname("new_name");
>>   V->setName(Tname);
>>
>> But when I run the opt and look at the IR output nothing is changed?
Not
>> sure what I'm doing wrong.
>>
>> Thanks.
>>
>>
>>
>>
>>
>> ______________________________**_________________
>> LLVM Developers mailing list
>> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
>>
http://lists.cs.uiuc.edu/**mailman/listinfo/llvmdev<http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev>
>>
>
>
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So is this simply not possible?

On Thu, Nov 17, 2011 at 10:31 AM, Ryan Taylor <ryta1203 at gmail.com>
wrote:
> Nick,
>
>    Thanks for this info, though this didn't help my problem at all.
>
>
> On Wed, Nov 16, 2011 at 7:21 PM, Nick Lewycky <nicholas at mxc.ca>
wrote:
>
>> Never create a Twine as a local variable.
>>
>>  V->setName(Twine("new_name"));
>>
>> should work fine, however. Note that Twine itself has an implicit
>> constructor from const char *, so this code:
>>
>>  V->setName("new_name");
>>
>> should also work fine.
>>
>> Nick
>>
>> Ryan Taylor wrote:
>>
>>> Basically I have two separate passes (first is a loop pass) which
are
>>> two different files and two different opts but I need to keep the
data
>>> consistent (ie, I want the changes to show up the resulting .bc
output
>>> file from the first (loop) pass so the second pass can use these
new
>>> names. Currently, when I print out
"BB->getName().str()" after the code
>>> below, I get the correct renaming but this doesn't show up in
the output
>>> file.
>>>
>>> I'm calling the opt like this:
>>>
>>> opt -load Release/lib/OptFile.so -optTag -S <file.bc> -o
file.ll
>>>
>>> I have also tried:
>>>
>>> opt -load Release/lib/OptFile.so -optTag <file.bc> -o file.bc
>>>
>>> Thanks.
>>>
>>> ---------- Forwarded message ----------
>>> From: *Ryan Taylor* <ryta1203 at gmail.com <mailto:ryta1203
at gmail.com>>
>>> Date: Wed, Nov 16, 2011 at 5:23 PM
>>> Subject: Re: [LLVMdev] Problem getting LoopInfo inside non-LoopPass
>>> To: llvmdev at cs.uiuc.edu <mailto:llvmdev at cs.uiuc.edu>
>>>
>>>
>>> LLVMers,
>>>
>>>   So, I'm trying to write a pass that changes the names of the
basic
>>> blocks through the use of Value, so:
>>>
>>>   Value *V = *BasicBlockPtr;
>>>   const Twine Tname("new_name");
>>>   V->setName(Tname);
>>>
>>> But when I run the opt and look at the IR output nothing is
changed? Not
>>> sure what I'm doing wrong.
>>>
>>> Thanks.
>>>
>>>
>>>
>>>
>>>
>>> ______________________________**_________________
>>> LLVM Developers mailing list
>>> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
>>>
http://lists.cs.uiuc.edu/**mailman/listinfo/llvmdev<http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev>
>>>
>>
>>
>
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I would have thought this would have been possible.

On Thu, Nov 17, 2011 at 3:49 PM, Ryan Taylor <ryta1203 at gmail.com>
wrote:
> So is this simply not possible?
>
>
> On Thu, Nov 17, 2011 at 10:31 AM, Ryan Taylor <ryta1203 at gmail.com>
wrote:
>
>> Nick,
>>
>>    Thanks for this info, though this didn't help my problem at all.
>>
>>
>> On Wed, Nov 16, 2011 at 7:21 PM, Nick Lewycky <nicholas at
mxc.ca> wrote:
>>
>>> Never create a Twine as a local variable.
>>>
>>>  V->setName(Twine("new_name"));
>>>
>>> should work fine, however. Note that Twine itself has an implicit
>>> constructor from const char *, so this code:
>>>
>>>  V->setName("new_name");
>>>
>>> should also work fine.
>>>
>>> Nick
>>>
>>> Ryan Taylor wrote:
>>>
>>>> Basically I have two separate passes (first is a loop pass)
which are
>>>> two different files and two different opts but I need to keep
the data
>>>> consistent (ie, I want the changes to show up the resulting .bc
output
>>>> file from the first (loop) pass so the second pass can use
these new
>>>> names. Currently, when I print out
"BB->getName().str()" after the code
>>>> below, I get the correct renaming but this doesn't show up
in the output
>>>> file.
>>>>
>>>> I'm calling the opt like this:
>>>>
>>>> opt -load Release/lib/OptFile.so -optTag -S <file.bc> -o
file.ll
>>>>
>>>> I have also tried:
>>>>
>>>> opt -load Release/lib/OptFile.so -optTag <file.bc> -o
file.bc
>>>>
>>>> Thanks.
>>>>
>>>> ---------- Forwarded message ----------
>>>> From: *Ryan Taylor* <ryta1203 at gmail.com
<mailto:ryta1203 at gmail.com>>
>>>> Date: Wed, Nov 16, 2011 at 5:23 PM
>>>> Subject: Re: [LLVMdev] Problem getting LoopInfo inside
non-LoopPass
>>>> To: llvmdev at cs.uiuc.edu <mailto:llvmdev at
cs.uiuc.edu>
>>>>
>>>>
>>>> LLVMers,
>>>>
>>>>   So, I'm trying to write a pass that changes the names of
the basic
>>>> blocks through the use of Value, so:
>>>>
>>>>   Value *V = *BasicBlockPtr;
>>>>   const Twine Tname("new_name");
>>>>   V->setName(Tname);
>>>>
>>>> But when I run the opt and look at the IR output nothing is
changed? Not
>>>> sure what I'm doing wrong.
>>>>
>>>> Thanks.
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> ______________________________**_________________
>>>> LLVM Developers mailing list
>>>> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
>>>>
http://lists.cs.uiuc.edu/**mailman/listinfo/llvmdev<http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev>
>>>>
>>>
>>>
>>
>
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