[LLVMdev] How to set constant pool section?

[Konstantin Vladimirov]

Hi,

What I want is to emit exact custom string to switch to rodata,
without ".section" in the front of it. I can see only that place where
".section" directive is hardcoded. It is relatively new hardcode --
earlier versions had string ConstantPoolSection to operate with.

---
With best regards, Konstantin

On Thu, Mar 15, 2012 at 11:40 AM, Joerg Sonnenberger
<joerg at britannica.bec.de> wrote:
> On Thu, Mar 15, 2012 at 11:00:54AM +0400, Konstantin Vladimirov wrote:
>> Hi,
>>
>> Thanks for pointing direction. As far, as I understand by reversing,
>> logic, that I want to overwrite is digged into:
>>
>> lib/MC/MCSectionELF.cpp
>>
>> MCSectionELF::PrintSwitchToSection
>>
>>   if (ShouldOmitSectionDirective(SectionName, MAI)) {
>>     OS << '\t' << getSectionName() << '\n';
>>     return;
>>   }
>>
>> // otherwise print ".section" directive and then section name
>>
>> So I need to overwrite ShouldOmitSectionDirective behavior. But this
>> method of MCSectionELF is not virtual.
>> As a workaround, I stubbed it in core LLVM code
>> (MCSectionELF::ShouldOmitSectionDirective), and everything works, but
>> it is ugly. May be you can advise further?
>
> I think you are off the mark here. The fragment above is used to create
>
>        .text
>
> instead of
>
>        .section ".text"
>
> or other more ugly forms. This is really just an optimisation for
> readiblity and compatibility with ancient tools.
>
> Joerg
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