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Encode a cost of zero as a cost of 1. 

llvm-svn: 27745
This commit is contained in:
Chris Lattner 2006-04-17 05:25:16 +00:00
parent aac2a200cd
commit e2e2cc5b28
1 changed files with 3 additions and 1 deletions
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4
llvm/utils/PerfectShuffle/PerfectShuffle.cpp
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@ -381,7 +381,9 @@ int main() {
// CostSat - The cost of this operation saturated to two bits.
unsigned CostSat = ShufTab[i].Cost;
if (CostSat > 3) CostSat = 3;
if (CostSat > 4) CostSat = 4;
if (CostSat == 0) CostSat = 1;
--CostSat; // Cost is now between 0-3.
unsigned OpNum = ShufTab[i].Op ? ShufTab[i].Op->OpNum : 0;
assert(OpNum < 16 && "Too few bits to encode operation!");