[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

Mikael Holmén <mikael.holmen at ericsson.com> changed:

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

--- Comment #12 from Mikael Holmén <mikael.holmen at ericsson.com> ---
Hi!

Unfortunately we found a new problem related to this in our downstream testing.

Reproduce with:
 llc -O1 -o - bbi-47958_ppc.ll -mtriple=powerpc-unknown-linux-gnu

Result:
llc: ../lib/CodeGen/SelectionDAG/SelectionDAG.cpp:900: bool
llvm::SelectionDAG::RemoveNodeFromCSEMaps(llvm::SDNode *): Assertion
`N->getOpcode() != ISD::DELETED_NODE && "DELETED_NODE in CSEMap!"' failed.

This starts happening wiith the fix https://reviews.llvm.org/D87698 submitted
as a2fb5446be.

If I revert a2fb5446be this crash goes away.

I haven't tried this out on 11.x, only on trunk.

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