llvm-bolt crashes with a seg fault about bolt HOT 8 CLOSED

Thank you for the bug report. Is your llvm-bolt compiled with assertions? I'm getting one triggered locally even using the command that does not crash for you.

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cmake -G Ninja ../llvm -DLLVM_TARGETS_TO_BUILD="X86;AArch64" -DCMAKE_BUILD_TYPE=Release
ninja

I simply followed the instructions on the github page to build the llvm-bolt binary.

Are you able to reproduce the issue?

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I'm not sure if it is "the issue", but once I disable assertions I'm hitting a problem with the printout.

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If the last valid printout is "after lower-annotations", then it's the issue with printing profile info for conditional tail calls without annotations.

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To check if that's the problem, you can add -simplify-conditional-tail-calls=0 option and see if it goes away.

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Adding -simplify-conditional-tail-calls=0 makes it go away. Doesn't crash. Thanks. Is this a bug though in the printing part of the code?

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The problem is that getDynoStats() cannot properly handle conditional tail calls since annotations are removed.

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OK, so I can confirm that -dyno-stats and -print-all are incompatible (lead to this crash) when -simplify-conditional-tail-calls=1

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