[llvm-dev] Modified LLVM IR

[Sandeep Kumar Singh via llvm-dev]

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
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