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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2011-01-19 22:11:48 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2011-01-19 22:11:48 +0000 |
| commit | ccdb3fcef9aeb9f683cd738afbe1cd961bb0c1ef (patch) | |
| tree | bc4a7bedadb947b8a5a0af21a9d6f7e793e3b5e7 /lib/CodeGen/LiveInterval.cpp | |
| parent | 5c6fc1cab774244fba2746b84f2b86d71b897733 (diff) | |
Implement RAGreedy::splitAroundRegion and remove loop splitting.
Region splitting includes loop splitting as a subset, and it is more generic.
The splitting heuristics for variables that are live in more than one block are
now:
1. Try to create a region that covers multiple basic blocks.
2. Try to create a new live range for each block with multiple uses.
3. Spill.
Steps 2 and 3 are similar to what the standard spiller is doing.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123853 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/LiveInterval.cpp')
| -rw-r--r-- | lib/CodeGen/LiveInterval.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/lib/CodeGen/LiveInterval.cpp b/lib/CodeGen/LiveInterval.cpp index c6a0149516..c2dbd6ab75 100644 --- a/lib/CodeGen/LiveInterval.cpp +++ b/lib/CodeGen/LiveInterval.cpp @@ -650,7 +650,9 @@ void LiveRange::dump() const { } void LiveInterval::print(raw_ostream &OS, const TargetRegisterInfo *TRI) const { - OS << PrintReg(reg, TRI) << ',' << weight; + OS << PrintReg(reg, TRI); + if (weight != 0) + OS << ',' << weight; if (empty()) OS << " EMPTY"; |