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Devirtualizer: fix de-virtualization of begin_apply #78886

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Merged
merged 1 commit into from
Jan 25, 2025
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Devirtualizer: fix de-virtualization of begin_apply #78886

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12 changes: 7 additions & 5 deletions lib/SILOptimizer/Utils/Devirtualize.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -633,11 +633,13 @@ replaceBeginApplyInst(SILBuilder &builder, SILPassManager *pm, SILLocation loc,
// Insert any end_borrow if the yielded value before the token's uses.
SmallVector<SILInstruction *, 4> users(
makeUserIteratorRange(oldYield->getUses()));
auto yieldCastRes = castValueToABICompatibleType(
&builder, pm, loc, newYield, newYield->getType(), oldYield->getType(),
users);
oldYield->replaceAllUsesWith(yieldCastRes.first);
changedCFG |= yieldCastRes.second;
if (!users.empty()) {
auto yieldCastRes = castValueToABICompatibleType(
&builder, pm, loc, newYield, newYield->getType(), oldYield->getType(),
users);
oldYield->replaceAllUsesWith(yieldCastRes.first);
changedCFG |= yieldCastRes.second;
}
}

if (newArgBorrows.empty())
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