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Enable compact region splitting by default.

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This helps generate better code in functions with high register
pressure.

The previous version of compact region splitting caused regressions
because the regions were a bit too large. A stronger negative bias
applied in r136832 fixed this problem.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136836 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen 2011-08-03 23:16:09 +00:00
parent 5787124820
commit a92afc18a8
1 changed files with 1 additions and 1 deletions
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lib/CodeGen/RegAllocGreedy.cpp
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@ -52,7 +52,7 @@ STATISTIC(NumGlobalSplits, "Number of split global live ranges");
STATISTIC(NumLocalSplits, "Number of split local live ranges");
STATISTIC(NumEvicted, "Number of interferences evicted");
cl::opt<bool> CompactRegions("compact-regions");
cl::opt<bool> CompactRegions("compact-regions", cl::init(true));
static RegisterRegAlloc greedyRegAlloc("greedy", "greedy register allocator",
createGreedyRegisterAllocator);