[llvm-dev] Modified LLVM IR

[Sandeep Kumar Singh via llvm-dev]

Hi,

Yes I am looking for IR pass that will do insert call of functions that
defined in another file.
Links/suggestions that guide me to start for adding IR pass will help me so
much.

Regards,
Deepika

On Wed, Feb 10, 2016 at 1:03 PM, mats petersson <mats at planetcatfish.com>
wrote:

> So how do you know what you want to modify (conceptually)?
>
> Have you got a IR pass that you are working on, or are you asking for
> links/suggestions on how to start on one?
>
> --
> Mats
>
> On 10 February 2016 at 04:04, Sandeep Kumar Singh <deepdondo007 at gmail.com>
> wrote:
>
>> Hi,
>>
>> I want to call/add some functions(that defined in another file) on top of
>> some functions, and reflect the same changes in object file.
>> No, I am not looking for contractor.
>>
>> Thanks,
>> Deepika
>>
>> On Tue, Feb 9, 2016 at 7:04 PM, mats petersson <mats at planetcatfish.com>
>> wrote:
>>
>>> What is the condition for adding this code?
>>>
>>> What have you tried so far? [Or are you looking for a contractor that
>>> can write code for you - I'm not sure this is quite the right place for
>>> that, but there are probably some people like that on this mailing list]
>>>
>>> --
>>> Mats
>>>
>>> On 9 February 2016 at 09:34, Sandeep Kumar Singh via llvm-dev <
>>> llvm-dev at lists.llvm.org> wrote:
>>>
>>>> Hi,
>>>>
>>>> I want to edit LLVM generated IR file, like as given below,
>>>>
>>>> Original LLVM IR file,
>>>> @.str2 = private unnamed_addr constant [17 x i8] c"\0AI am in
>>>> one_11\0A\00", align 1
>>>>
>>>> ; Function Attrs: nounwind
>>>> define i32 @one_1(i32 %ivar1, i32 %ivar2) #0 {
>>>> entry:
>>>>   %ivar1.addr = alloca i32, align 4
>>>>   %ivar2.addr = alloca i32, align 4
>>>>   %isum = alloca i32, align 4
>>>>   store i32 %ivar1, i32* %ivar1.addr, align 4
>>>>   store i32 %ivar2, i32* %ivar2.addr, align 4
>>>>   store i32 0, i32* %isum, align 4
>>>>   %call = call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([16
>>>> x i8]* @.str, i32 0, i32 0)) #1
>>>>   %0 = load i32* %ivar1.addr, align 4
>>>>   %1 = load i32* %ivar2.addr, align 4
>>>>   %call1 = call i32 @one_11(i32 %0, i32 %1)
>>>>   store i32 %call1, i32* %isum, align 4
>>>>   %2 = load i32* %isum, align 4
>>>>   ret i32 %2
>>>> }
>>>>
>>>> Modified LLVM IR file,
>>>> @.str2 = private unnamed_addr constant [17 x i8] c"\0AI am in
>>>> one_11\0A\00", align 1
>>>> @.str3 = private unnamed_addr constant [17 x i8] c"\0AI am in
>>>> one_12\0A\00", align 1
>>>>
>>>> ; Function Attrs: nounwind
>>>> define i32 @one_1(i32 %ivar1, i32 %ivar2) #0 {
>>>> entry:
>>>>   %ivar1.addr = alloca i32, align 4
>>>>   %ivar2.addr = alloca i32, align 4
>>>>   %isum = alloca i32, align 4
>>>>   store i32 %ivar1, i32* %ivar1.addr, align 4
>>>>   store i32 %ivar2, i32* %ivar2.addr, align 4
>>>>   store i32 0, i32* %isum, align 4
>>>>   %call1 = call i32 @one_12(i32 %0, i32 %1) <==
>>>>   store i32 %call1, i32* %isum, align       <==
>>>>   %call = call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([16
>>>> x i8]* @.str, i32 0, i32 0)) #1
>>>>   %0 = load i32* %ivar1.addr, align 4
>>>>   %1 = load i32* %ivar2.addr, align 4
>>>>   %call2 = call i32 @one_11(i32 %0, i32 %1) <==
>>>>   store i32 %call2, i32* %isum, align 4     <==
>>>>   %2 = load i32* %isum, align 4
>>>>   ret i32 %2
>>>> }
>>>>
>>>> With llc tool, I want to generate object file for modified llvm ir file
>>>> and it should call function
>>>> first "one_12"" and then function "one_11".
>>>>
>>>> Can someone please tell me how I can do my above requirement.
>>>>
>>>> Thanks in advance,
>>>> Deepika
>>>>
>>>> _______________________________________________
>>>> LLVM Developers mailing list
>>>> llvm-dev at lists.llvm.org
>>>> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>>>>
>>>>
>>>
>>
>>
>> --
>>
>> Thanks and Regards,
>> Sandeep Kumar Singh
>>
>
>


-- 

Thanks and Regards,
Sandeep Kumar Singh
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