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JIT: Skip moving BBJ_COND jump target if fallthrough target is equally likely (#105084)

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Aman Khalid 2024-07-18 21:51:04 +00:00 • committed by GitHub
parent 7cdd2e90db
commit c70791346c
Signed by: github
GPG key ID: B5690EEEBB952194
1 changed files with 7 additions and 0 deletions
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7
src/coreclr/jit/fgopt.cpp
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@ -4536,6 +4536,13 @@ void Compiler::fgMoveHotJumps()
targetEdge = block->GetFalseEdge();
unlikelyEdge = block->GetTrueEdge();
}
// If we aren't sure which successor is hotter, and we already fall into one of them,
// do nothing
if ((unlikelyEdge->getLikelihood() == 0.5) && block->NextIs(unlikelyEdge->getDestinationBlock()))
{
continue;
}
}
else
{