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Add a FIXME explaining the move to a single indirect call bonus per function

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that we can change from indirect to direct.

llvm-svn: 124045
This commit is contained in:
Eric Christopher 2011-01-22 21:56:53 +00:00
parent 5da99702ec
commit ee9652eceb
1 changed files with 5 additions and 0 deletions
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5
lib/Analysis/InlineCost.cpp
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@ -189,6 +189,11 @@ unsigned CodeMetrics::CountBonusForConstant(Value *V) {
}
}
// FIXME: The only reason we're applying the bonus once is while it's great
// to devirtualize calls the magnitude of the bonus x number of call sites
// can lead to a huge code explosion when we prefer to inline 1000 instruction
// functions that have 10 call sites. This should be made a function of the
// estimated inline penalty/benefit + the indirect call bonus.
if (indirectCallBonus) Bonus += InlineConstants::IndirectCallBonus;
return Bonus;