llvm dev - May 2019 - Issues to implement a backend

Hi, All
I am trying to implement a llvm backend. But I encountered the following problem
when running the backend:
"Fatal error: error in backend: WinEH not implemented for this 
target"

This error is triggered by function processFunctionBeforeFrameFinalized()
defined in class TargetFrameLowering.

Can anyone help? Thanks a lot!

Zhiguo


[cid:image001.jpg at 01D50970.C9344210]
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.llvm.org/pipermail/llvm-dev/attachments/20190513/6d866094/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image001.jpg
Type: image/jpeg
Size: 54526 bytes
Desc: image001.jpg
URL:
<http://lists.llvm.org/pipermail/llvm-dev/attachments/20190513/6d866094/attachment-0001.jpg>

Hi Zhiguo,

On Mon, 13 May 2019 at 02:47, GE ZHIGUO via llvm-dev
<llvm-dev at lists.llvm.org> wrote:
> “Fatal error: error in backend: WinEH not implemented for this  target”
This should only happen if you've deliberately opted into handling
exceptions the Windows way, possibly by copy/pasting an existing
implementation without realizing the implications?

There's not really any reason for anything except Windows to do that,
so look in your MCTargetDesc/XYZMCAsmInfo.cpp for where you set
ExceptionsType and change it to DwarfCFI instead.

Cheers.

Tim.

Hi, Tim
I have solved the problem. Thanks a lot for your help!

Zhiguo

-----Original Message-----
From: Tim Northover [mailto:t.p.northover at gmail.com] 
Sent: 2019年5月13日 14:42
To: GE ZHIGUO <GE.ZHIGUO at huawei.com>
Cc: llvm-dev at lists.llvm.org
Subject: Re: [llvm-dev] Issues to implement a backend

Hi Zhiguo,

On Mon, 13 May 2019 at 02:47, GE ZHIGUO via llvm-dev <llvm-dev at
lists.llvm.org> wrote:
> “Fatal error: error in backend: WinEH not implemented for this  target”
This should only happen if you've deliberately opted into handling
exceptions the Windows way, possibly by copy/pasting an existing implementation
without realizing the implications?

There's not really any reason for anything except Windows to do that, so
look in your MCTargetDesc/XYZMCAsmInfo.cpp for where you set ExceptionsType and
change it to DwarfCFI instead.

Cheers.

Tim.