[LLVMdev] how to compile a large project to LLVM IR?

[Q Z]

Thank you for you nice answer. But I'am sorry, I find the question I was
asked is not what I really want. my situation is that I want to write a
LLVM pass to check a large progress. what is the simplest way for me to
make the progress become checkable?

2015-06-25 1:54 GMT+08:00 Pete Cooper <peter_cooper at apple.com>:

>
> On Jun 24, 2015, at 10:19 AM, Eli Bendersky <eliben at google.com> wrote:
>
>
>
> On Wed, Jun 24, 2015 at 7:05 AM, Q Z <zhaoqian301 at gmail.com> wrote:
>
>> Hello，I want to compile a large project(for example,Apache httpd) to one
>> .bc file. How can I do this? Can you give me some examples?
>>
>>
> In general, if the codebase of a certain project is compilable by
> Clang/LLVM, this should be possible, but the devil is in the details (for
> example - how is the standard library going to get compiled into that .bc
> file?)
>
> If you only care about the project itself and not things like the standard
> library, then LTO is possible too.  Depends on the linker you are using,
> but Apple’s ld and I believe the gold linker both have -save-temps options
> which save the bit codes before/after optimization but certainly after
> linking.
>
> Cheers,
> Pete
>
>
> I suggest you take a look at the "NaCl ports" project (
> https://code.google.com/p/naclports/
> <https://urldefense.proofpoint.com/v2/url?u=https-3A__code.google.com_p_naclports_&d=AwMFaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=Mfk2qtn1LTDThVkh6-oGglNfMADXfJdty4_bhmuhMHA&m=RfjvEJWweAkWHLneLw1ksvf1RoobZbEIUUVtXtJgYv4&s=RvO9OeVGsfCkE0U5HJQV_pwo1s2U1qoZg2Wx-gK19cs&e=>).
> It has ready-made makefiles to compile a bunch of well known open source
> projects using the PNaCl toolchain, which is based on LLVM. Each file is
> compiled to IR and the LLVM linker is used to link them all together. This
> is a full solution, handling the standard libraries, and so on.
>
>
> Eli
>
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>
>
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