From: Jakob Stoklund Olesen <stoklund@2pi.dk>
Date: Tue, 3 Aug 2010 17:21:16 +0000 (+0000)
Subject: Oops. Don't normalize spill weights twice.
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=bae696956b74680a7fedafb7fea70628d1ef14df;p=oota-llvm.git

Oops. Don't normalize spill weights twice.

When the normalizeSpillWeights function was introduced, I forgot to remove this
normalization.

This change could affect register allocation. Hopefully for the better.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110119 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/LiveIntervalAnalysis.cpp b/lib/CodeGen/LiveIntervalAnalysis.cpp
index 67968b3525b..a6dc3366519 100644
--- a/lib/CodeGen/LiveIntervalAnalysis.cpp
+++ b/lib/CodeGen/LiveIntervalAnalysis.cpp
@@ -1855,7 +1855,6 @@ addIntervalsForSpills(const LiveInterval &li,
   for (unsigned i = 0, e = NewLIs.size(); i != e; ++i) {
     LiveInterval *LI = NewLIs[i];
     if (!LI->empty()) {
-      LI->weight /= SlotIndex::NUM * getApproximateInstructionCount(*LI);
       if (!AddedKill.count(LI)) {
         LiveRange *LR = &LI->ranges[LI->ranges.size()-1];
         SlotIndex LastUseIdx = LR->end.getBaseIndex();