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Hoisted some loop invariant smallvector lookups out of a MachineLICM loop

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llvm-svn: 147127
This commit is contained in:
Pete Cooper 2011-12-22 02:13:25 +00:00
parent b3756d8e4d
commit 2c77045084
1 changed files with 3 additions and 1 deletions
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4
lib/CodeGen/MachineLICM.cpp
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@ -1036,9 +1036,11 @@ bool MachineLICM::CanCauseHighRegPressure(DenseMap<unsigned, int> &Cost) {
continue;
unsigned RCId = CI->first;
unsigned Limit = RegLimit[RCId];
int Cost = CI->second;
for (unsigned i = BackTrace.size(); i != 0; --i) {
SmallVector<unsigned, 8> &RP = BackTrace[i-1];
if (RP[RCId] + CI->second >= RegLimit[RCId])
if (RP[RCId] + Cost >= Limit)
return true;
}
}