I tried it, and it seems to fix this test case at least.
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https://bugs.launchpad.net/bugs/1867173
Title:
FTBFS with llvm-10
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I think I found a bug that I would guess is causing this crash:
https://bugs.llvm.org/show_bug.cgi?id=45384
** Bug watch added: bugs.llvm.org/ #45384
https://bugs.llvm.org/show_bug.cgi?id=45384
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I tracked this down to a single commit that if reverted stops the test
case from segfaulting: 2d5820c. This is a patch that improves
CorrelatedValuePropagation to also handle And instructions.
I am currently working on finding the exact bug - I am not yet sure if
the bug is actually in that pass
I tried it on trunk (9adc7fc) built with gcc, and then also built a
second time with itself, but it did not show up.
It would help me if I could get the right cmake line, and the git commit
ID. I used:
cmake -G Ninja -DLLVM_ENABLE_PROJECTS="clang;compiler-rt"
-DCMAKE_BUILD_TYPE="Release"
I would be happy to help on this but not sure where to start - to run
/usr/lib/llvm-10/bin/llvm-lto -thinlto -thinlto-action=thinlink -o
postgres.index.bc postgres/access/brin/brin.bc
, I would need the input brin.bc file, but I don't have it...
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