[llvm-dev] StringRef Iterator Variable Display

[Craig Topper via llvm-dev]

PrintAsOperand works on a Value object. You tried to call it on a
StringRef. You need to change the set to use std::string instead of
StringRef and call printAsOperand when you put data into the set.

On Wed, Apr 24, 2019 at 1:43 PM hameeza ahmed via llvm-dev <
llvm-dev at lists.llvm.org> wrote:

> it is working fine for alphabetic labels....but numeric labels are not
> displayed by stringref.
>
> what is the issue?
> please help..
>
> On Wed, Apr 24, 2019 at 2:27 AM hameeza ahmed <hahmed2305 at gmail.com>
> wrote:
>
>>  for (set<StringRef>::iterator sit = L.begin(); sit != L.end(); sit++) {
>> std::string spr;
>>  raw_string_ostream string_stream(spr);
>> sit->printAsOperand(string_stream, false);}
>>
>> this is giving error of *printasoperand *not member of sit
>>
>> On Wed, Apr 24, 2019 at 2:16 AM hameeza ahmed <hahmed2305 at gmail.com>
>> wrote:
>>
>>> Yes..agree I tried it...But this doesnot work with stringref..
>>>
>>
>>> On Wed, Apr 24, 2019 at 2:15 AM Justin Bogner <mail at justinbogner.com>
>>> wrote:
>>>
>>>> Assuming you have an `Instruction *` or a `Value *`, you probably want
>>>> `X->printAsOperand(errs(), /*PrintType=*/false)` or so.
>>>>
>>>> David Blaikie via llvm-dev <llvm-dev at lists.llvm.org> writes:
>>>> > Oh, sorry, adding the mailing list back (since I don't know if/how to
>>>> > get the numbers) - perhaps someone else can suggest how to do that.
>>>> >
>>>> > I'd go and look at how the IR AsmPrinter does this, if I were trying
>>>> > to figure it out.
>>>> >
>>>> > On Tue, Apr 23, 2019 at 1:26 PM hameeza ahmed <hahmed2305 at gmail.com>
>>>> wrote:
>>>> >>
>>>> >> How to display these %num stored in stringref?
>>>> >>
>>>> >> On Wed, Apr 24, 2019 at 1:25 AM David Blaikie <dblaikie at gmail.com>
>>>> wrote:
>>>> >>>
>>>> >>> Ah, this is a function of where you're getting the names from, not
>>>> >>> where/how you're printing them out.
>>>> >>>
>>>> >>> %num named values in LLVM IR aren actually nameless - the numbering
>>>> is
>>>> >>> only used for textual rendering, not as an actual name. These %num
>>>> >>> values will return false from "hasName".
>>>> >>>
>>>> >>> On Tue, Apr 23, 2019 at 1:18 PM hameeza ahmed <hahmed2305 at gmail.com>
>>>> wrote:
>>>> >>> >
>>>> >>> > the code is compiled and executed.
>>>> >>> > When the strings are name they are displayed...
>>>> >>> > when strings are %number they are not dispalyed
>>>> >>> >
>>>> >>> > On Wed, Apr 24, 2019 at 1:15 AM David Blaikie <dblaikie at gmail.com>
>>>> wrote:
>>>> >>> >>
>>>> >>> >> Does the code compile and execute? If so, I guess the strings in
>>>> your
>>>> >>> >> set are empty/zero-length.
>>>> >>> >>
>>>> >>> >> On Tue, Apr 23, 2019 at 12:41 PM hameeza ahmed via llvm-dev
>>>> >>> >> <llvm-dev at lists.llvm.org> wrote:
>>>> >>> >> >
>>>> >>> >> > Hello,
>>>> >>> >> > I want to display the variable names in stringref
>>>> >>> >> > iterator. But it is not displayed using following code.
>>>> >>> >> >
>>>> >>> >> >
>>>> >>> >> > for (set<StringRef>::iterator sit = L.begin(); sit != L.end();
>>>> sit++) {
>>>> >>> >> > errs() << *sit << " ";
>>>> >>> >> > }
>>>> >>> >> >
>>>> >>> >> > How to do this?
>>>> >>> >> > Please help..
>>>> >>> >> > _______________________________________________
>>>> >>> >> > LLVM Developers mailing list
>>>> >>> >> > llvm-dev at lists.llvm.org
>>>> >>> >> > https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>>>> > _______________________________________________
>>>> > LLVM Developers mailing list
>>>> > llvm-dev at lists.llvm.org
>>>> > https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>>>>
>>> _______________________________________________
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>
-- 
~Craig
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