[llvm-dev] Replace "ret" with "pop+jump"

[Liad Mordekoviz via llvm-dev]

Hey,
Legalization steps in X86ISelLowering.cpp seems like your way to go,
perhaps not even legalization and go straight away to LowerReturn.

On Thu, Aug 9, 2018 at 6:23 AM, PenYiWang via llvm-dev <
llvm-dev at lists.llvm.org> wrote:

> Hi
>
> I want to replace all the return instructions in the program with pop
> <reg>; jmp <reg>.
>
> Should I use  IRBuilder in LLVM IR level?
>
> I found that there is a IRBuilder::CreateIndirectBr
>
> Or Should I modify the code in lib/Target/X86/X86ISelLowering.cpp in
> backend ?
>
> I found that there is a X86TargetLowering::LowerCall
>
> Which is better?
>
> Thanks
>
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