llvm dev - Sep 2020 - [NPM] Register target specific pass with opt

Hello LLVM community,

I was trying to port a target specific loop transformation pass
(HexagonVectorLoopCarriedReusePass) to the New Pass Manager. However, I could
not figure out a way to register this pass with opt. I can see that
llvm/lib/Passes/PassRegistry.def is the registry for target independent passes.
Can anyone point me to an example/API which can help me in registering this pass
so that I can use it -passes option in opt?

Thanks
Ankit
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.llvm.org/pipermail/llvm-dev/attachments/20200917/edbc88e3/attachment.html>

Hi Ankit,

Testing target specific passes using opt+NPM is not currently supported. The
work is still work-in-progress. What is the motivation for doing this?

- Yuanfang

________________________________________
From: llvm-dev <llvm-dev-bounces at lists.llvm.org> on behalf of Ankit
Aggarwal via llvm-dev <llvm-dev at lists.llvm.org>
Sent: Thursday, September 17, 2020 12:14 PM
To: llvm-dev at lists.llvm.org
Subject: [llvm-dev] [NPM] Register target specific pass with opt

Hello LLVM community,

I was trying to port a target specific loop transformation pass
(HexagonVectorLoopCarriedReusePass) to the New Pass Manager. However, I could
not figure out a way to register this pass with opt. I can see that
llvm/lib/Passes/PassRegistry.def is the registry for target independent passes.
Can anyone point me to an example/API which can help me in registering this pass
so that I can use it -passes option in opt?

Thanks
Ankit

Hi Chen,

Thanks for the quick response.

Halide which is a DSL for image processing has moved to the New Pass Manager.
Earlier we were using TargetMachine's adjustPassManager to run
HexagonVectorLoopCarriedReusePass. Now we want to be able to run this pass with
the New Pass Manager.

Regards
Ankit

-----Original Message-----
From: Chen, Yuanfang <Yuanfang.Chen at sony.com>
Sent: Thursday, September 17, 2020 12:21 PM
To: llvm-dev at lists.llvm.org; Ankit Aggarwal <aankit at quicinc.com>
Subject: [EXT] Re: [NPM] Register target specific pass with opt

 Hi Ankit,

Testing target specific passes using opt+NPM is not currently supported. The
work is still work-in-progress. What is the motivation for doing this?

- Yuanfang

________________________________________
From: llvm-dev <llvm-dev-bounces at lists.llvm.org> on behalf of Ankit
Aggarwal via llvm-dev <llvm-dev at lists.llvm.org>
Sent: Thursday, September 17, 2020 12:14 PM
To: llvm-dev at lists.llvm.org
Subject: [llvm-dev] [NPM] Register target specific pass with opt

Hello LLVM community,

I was trying to port a target specific loop transformation pass
(HexagonVectorLoopCarriedReusePass) to the New Pass Manager. However, I could
not figure out a way to register this pass with opt. I can see that
llvm/lib/Passes/PassRegistry.def is the registry for target independent passes.
Can anyone point me to an example/API which can help me in registering this pass
so that I can use it -passes option in opt?

Thanks
Ankit

Re-reply, to llvm-dev this time.

The legacy pass manager allowed TargetMachine to inject passes at various
extension points (and there are actual uses of that).  The NPM does support such
extensions, but at the moment there is no way for a TM to add passes.  Something
like TargetMachine::registerPassBuilderCallbacks(PassBuilder&) would allow
that.

--
Krzysztof Parzyszek  kparzysz at quicinc.com   AI tools development

-----Original Message-----
From: llvm-dev <llvm-dev-bounces at lists.llvm.org> On Behalf Of Chen,
Yuanfang via llvm-dev
Sent: Thursday, September 17, 2020 2:21 PM
To: llvm-dev at lists.llvm.org; Ankit Aggarwal <aankit at quicinc.com>
Subject: [EXT] Re: [llvm-dev] [NPM] Register target specific pass with opt

 Hi Ankit,

Testing target specific passes using opt+NPM is not currently supported. The
work is still work-in-progress. What is the motivation for doing this?

- Yuanfang

________________________________________
From: llvm-dev <llvm-dev-bounces at lists.llvm.org> on behalf of Ankit
Aggarwal via llvm-dev <llvm-dev at lists.llvm.org>
Sent: Thursday, September 17, 2020 12:14 PM
To: llvm-dev at lists.llvm.org
Subject: [llvm-dev] [NPM] Register target specific pass with opt

Hello LLVM community,

I was trying to port a target specific loop transformation pass
(HexagonVectorLoopCarriedReusePass) to the New Pass Manager. However, I could
not figure out a way to register this pass with opt. I can see that
llvm/lib/Passes/PassRegistry.def is the registry for target independent passes.
Can anyone point me to an example/API which can help me in registering this pass
so that I can use it -passes option in opt?

Thanks
Ankit
_______________________________________________
LLVM Developers mailing list
llvm-dev at lists.llvm.org
https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev