[llvm-bugs] [Bug 40181] After r334261, Assertion failed: ((VT.getVectorNumElements() + N2C->getZExtValue() <= N1.getValueType().getVectorNumElements()) && "Extract subvector overflow!"), function getNode, file lib/CodeGen/SelectionDAG/SelectionDAG.cpp, line 4682.

via llvm-bugs llvm-bugs at lists.llvm.org
Sat Dec 29 05:21:09 PST 2018


Dimitry Andric <dimitry at andric.com> changed:

           What    |Removed                     |Added
         Resolution|---                         |FIXED
                 CC|                            |aemerson at apple.com
             Status|NEW                         |RESOLVED

--- Comment #1 from Dimitry Andric <dimitry at andric.com> ---
Never mind, this was apparently fixed by https://reviews.llvm.org/rL342397,
which was in turn a fixed version of https://reviews.llvm.org/rL342183:

r342183 | aemerson | 2018-09-13 23:28:58 +0200 (Thu, 13 Sep 2018) | 3 lines

[DAGCombine] Fix crash when store merging created an extract_subvector with
invalid index.

Differential Revision: https://reviews.llvm.org/D51831

Still, 7.0.0 and 7.0.1 still have this issue, so maybe it would be nice to
backport r342397.

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