[llvm-bugs] [Bug 47517] SelectionDAG.cpp:900: bool llvm::SelectionDAG::RemoveNodeFromCSEMaps(llvm::SDNode *): Assertion `N->getOpcode() != ISD::DELETED_NODE && "DELETED_NODE in CSEMap!"' failed. with llc -O1

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=47517

Hans Wennborg <hans at chromium.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|REOPENED                    |RESOLVED
         Resolution|---                         |FIXED

--- Comment #43 from Hans Wennborg <hans at chromium.org> ---
(In reply to Qiu Chaofan from comment #42)
> (In reply to Hans Wennborg from comment #39)
> > (In reply to Qiu Chaofan from comment #38)
> > > I think I need to revert the
> > > Remove DeadNode(CFP) part since it's actually not necessary for the original
> > > bug of this.
> > 
> > Please go ahead an do that, and include the test cases from this bug so we
> > don't regress.
> 
> Sure. See rGb326d4ff.

Thanks. Pushed to 11.x as 121babae56e9f08acedf3d6d44757e35556d0a37.

It would be nice if this code were more reliable, but closing this bug for now
since the currently known problems should be fixed now.

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