[llvm-dev] Modified LLVM IR

[mats petersson via llvm-dev]

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
>
> _______________________________________________
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> llvm-dev at lists.llvm.org
> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>
>
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