[llvm-dev] assertion triggered since update to llvm 5

Andrew Kelley via llvm-dev llvm-dev at lists.llvm.org
Sun Sep 17 14:40:19 PDT 2017


On Sun, Sep 17, 2017 at 4:21 PM, Davide Italiano <davide at freebsd.org> wrote:

> Dump the IR before newgvn and run through opt -newgvn. It should crash.
> I'm not familiar with your frontend but you might want to use -mllvm
> -opt-bisect-limit.
>

Thanks for the suggestion! I added -mllvm support to my frontend, did your
suggestion, and now I have LLVM IR that causes the crash.
Reported here: https://bugs.llvm.org/show_bug.cgi?id=34651

This is with 5.0.0. I don't have a build of master lying around to test
against.
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