llvm dev - Jan 2018 - Integrating llvm pass with pass manager

I have taken SimplePass and added in Transform directory, “libLLVMSimplePass.a”
is built but I can not see this pass in opt —help. I don’t even see the name of
pass while registering it in the example.
> On Jan 13, 2018, at 7:35 AM, David Chisnall <David.Chisnall at
cl.cam.ac.uk> wrote:
> 
> On 13 Jan 2018, at 03:45, Craig Topper via llvm-dev <llvm-dev at
lists.llvm.org> wrote:
>> 
>> I’m not sure what the correct way to do this is. I think your plugin
needs to do something to tell clang/llvm when to run the pass. I’ll try to look
later when I’m back at a computer.
> 
> You need to use RegisterStandardPasses to add it to the default pipeline
automatically.  You can find an example here:
> 
>
https://github.com/CompilerTeaching/SimplePass/blob/ba5248a9ea0bd9e1fab3b1f8a5c85d6e0db57acd/SimplePass.cc#L116
> 
> David
> 
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On 14 Jan 2018, at 00:14, sangeeta chowdhary <sangitachowdhary at
gmail.com> wrote:
> 
> I have taken SimplePass and added in Transform directory,
“libLLVMSimplePass.a” is built but I can not see this pass in opt —help. I don’t
even see the name of pass while registering it in the example.
The SimplePass example is intended to be built out of tree, so I’ve no idea what
happens if you try building it in tree.  I wouldn’t expect to see it in the opt
--help output, because it doesn’t define its own command-line options, it just
adds itself to the default optimiser pipeline (at the end, and even if you’re
running at -O0).  You can see that it works by building it with its own CMake
build system and then passing -Xclang -load -Xclang ./SimplePass.so to your
clang command line.

David

Thats not what I am looking for. I want to run it with clang by just giving
name of my pass. I have expalined it in my previous mail.

On Jan 15, 2018 8:21 AM, "David Chisnall" <David.Chisnall at
cl.cam.ac.uk>
wrote:
> On 14 Jan 2018, at 00:14, sangeeta chowdhary <sangitachowdhary at
gmail.com>
> wrote:
> >
> > I have taken SimplePass and added in Transform directory,
> “libLLVMSimplePass.a” is built but I can not see this pass in opt —help. I
> don’t even see the name of pass while registering it in the example.
>
> The SimplePass example is intended to be built out of tree, so I’ve no
> idea what happens if you try building it in tree.  I wouldn’t expect to see
> it in the opt --help output, because it doesn’t define its own command-line
> options, it just adds itself to the default optimiser pipeline (at the end,
> and even if you’re running at -O0).  You can see that it works by building
> it with its own CMake build system and then passing -Xclang -load -Xclang
> ./SimplePass.so to your clang command line.
>
> David
>
>
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